51P/Harrington - A [At the time of 2008 Nov. 1]
Epoch 2008 June 23.0 TT = JDT 2454640.5
T 2008 June 18.40088 TT Nakano
q 1.6877714 (2000.0) P Q
n 0.13830617 Peri. 269.16987 +0.98797176 +0.12275147
a 3.7031816 Node 83.77548 -0.07460984 +0.91108786
e 0.5442375 Incl. 5.42828 -0.13544436 +0.39351110
P 7.13
From 459 observations 1994-2008, mean residual 0".90.
Nongravitational parameters A1 = +4.05 +/- 0.05, A2 = +0.0707 +/- 0.0061.
There are 712 observations between 1994 - 2008, but orbit was computed
rejecting 155 observations which were made between 1994 May 1-Sept. 13,
1994 Dec. 6-1995 Jan. 28 and 2001 July 1-Nov. 23.
Residuals in seconds of arc
1994/ 011220 170 0.1+ 0.2- 080903 118 1.1- 0.3-
940925 897 2.1+ 1.9- 011222 213 0.2- 1.7- 080903 118 1.0- 0.1-
940925 897 0.5+ 0.8- 011222 213 1.0+ 0.0 080903 J47 (3.6- 0.7+)
940925 897 1.9+ 1.1- 011222 213 0.4- 0.2+ 080903 J47 (2.6- 0.2+)
940930 897 0.6+ 1.0- 011222 213 0.7- 0.9- 080903 J47 1.9- 0.3+
940930 897 1.0+ 0.6- 011223 704 1.6- 0.1+ 080904 H06 0.7- 0.4-
941001 410 1.4+ 0.6- 011223 704 1.9- 0.8+ 080904 H06 0.7- 0.5-
941001 410 1.2+ 0.6- 011223 704 (4.0- 1.5+) 080905 941 0.3+ 0.2+
941002 360 2.1+ 0.7- 011223 704 (4.0- 0.2+) 080905 941 0.2+ 0.1+
941002 360 1.9+ 0.8- 011223 461 2.1+ 0.1- 080905 941 0.7+ 0.0
941004 801 1.1- 0.2+ 011223 461 0.6+ 0.2+ 080906 232 0.1- 0.7-
941004 801 0.6+ 0.3- 011223 461 1.6+ 1.2+ 080906 232 0.5- 0.5-
941004 691 1.9+ 1.0- 011223 461 0.9+ 0.3+ 080906 232 1.9- 0.4-
941004 691 1.8+ 0.8- 011223 235 1.0+ 0.5+ 080907 704 (4.0- 0.9-)
941004 691 1.4+ 1.0- 011224 170 1.2+ 0.5- 080907 704 (5.6- 1.0-)
941004 691 1.7+ 0.9- 011224 170 2.2- 0.2- 080907 704 (3.7- 1.3-)
941005 046 1.1+ 0.4- 011224 461 1.2+ 1.3+ 080907 704 (3.3- 0.4-)
941005 046 1.1+ 0.5- 011224 461 0.9+ 1.5+ 080907 704 (5.5- 1.4-)
941005 046 1.1+ 0.5- 011224 461 0.3+ 1.9+ 080908 367 0.6- 0.4-
941005 691 2.0+ 1.4- 011225 213 (4.1- 0.4+) 080908 367 0.8- 0.7-
941005 691 1.8+ 1.3- 011225 213 (0.1- 2.3-) 080908 367 0.4- 0.1-
941007 557 1.5+ 0.8- 011225 213 (2.3- 2.1-) 080909 585 0.1+ 0.7+
941007 046 1.1+ 1.0- 011225 170 0.9- 0.1- 080909 585 1.6+ 0.7+
941007 557 1.0+ 0.9- 011225 170 0.4+ 0.7- 080909 585 0.1+ 0.1+
941007 046 1.1+ 1.0- 011226 349 2.0+ 1.5+ 080909 A71 (3.9- 0.6-)
941007 046 1.1+ 0.8- 011226 349 2.2+ 1.1- 080909 A71 (2.9- 0.4-)
941007 557 1.3+ 1.0- 011226 349 0.7+ 1.0+ 080909 A71 (3.6- 0.5-)
941007 801 0.9- 0.9- 2002/ 080909 130 1.1- 0.4-
941007 801 0.6+ 0.5- 020101 235 1.7+ 0.9+ 080909 130 1.4- 0.4-
941008 557 1.2+ 0.8- 020102 235 1.9- 0.7+ 080909 130 1.4- 0.1-
941008 557 1.2+ 0.8- 020103 349 0.8+ 0.1+ 080909 130 1.3- 0.2-
941009 557 1.2+ 1.0- 020103 349 0.6- 1.1+ 080910 130 0.6+ 0.1+
941009 557 1.2+ 0.8- 020103 613 0.8- 0.4+ 080910 130 0.0 0.0
941010 557 1.2+ 0.5- 020103 613 0.6+ 0.1+ 080910 130 1.4+ 0.3+
941010 557 1.1+ 0.8- 020103 613 0.7- 0.7+ 080910 130 1.2+ 0.4+
941014 897 1.4+ 0.7- 020104 215 1.3+ 0.9+ 080914 J47 0.2+ 0.8+
941014 897 0.4- 0.4- 020104 215 2.0+ 0.1+ 080914 J47 0.2+ 0.4+
941014 360 0.7+ 0.8- 020104 215 1.7+ 1.2+ 080914 J47 0.2- 0.7+
941014 360 0.7+ 0.8- 020104 046 2.2+ 0.8+ 080914 J47 0.0 0.2+
941030 360 0.2+ 0.3- 020104 046 1.7+ 1.1+ 080916 E16 1.5- 0.2+
941030 360 0.4- 0.5- 020104 046 0.9+ 0.2+ 080917 204 1.1- 0.1-
941101 897 0.0 0.5+ 020104 046 1.2+ 0.4+ 080917 204 1.4- 0.1-
941101 897 0.6- 1.7+ 020104 235 0.9- 0.1- 080918 H45 1.7- 0.2-
941104 410 0.9- 0.8+ 020104 613 1.3+ 0.3- 080918 H45 1.3- 0.1-
941104 410 0.7- 1.5+ 020106 235 0.2+ 0.2+ 080918 H45 0.9- 0.0
941107 691 0.8- 1.6- 020107 235 1.3+ 0.8+ 080918 H45 1.7- 0.2-
941107 691 0.6- 1.5- 020107 170 1.2+ 1.2+ 080918 H45 0.9- 0.3-
941108 801 0.6- 1.4- 020108 235 (3.2+ 0.0 ) 080918 H45 1.6- 0.1-
941108 801 0.5- 0.1- 020109 587 1.6+ 0.3+ 080922 900 1.5- 0.3-
941108 360 0.5- 1.3- 020109 587 1.1+ 0.1- 080922 900 1.7- 0.4-
941108 360 0.6- 1.3- 020110 046 1.9+ 0.7+ 080923 H45 1.6- 0.1-
941109 691 1.0- 1.8- 020110 046 1.3+ 1.1+ 080923 H45 (2.9- 0.2-)
941109 691 0.8- 1.9- 020110 046 (2.7+ 0.2+) 080923 H45 (3.1- 0.2-)
941109 691 0.9- 2.0- 020110 235 0.3+ 1.1+ 080923 H45 (3.0- 0.0 )
941123 410 0.8- 0.9- 020111 360 (2.3+ 0.9+) 080923 H45 1.9- 0.2-
941123 410 2.2- 1.2- 020111 360 1.6+ 0.7+ 080925 B42 0.8- 0.4+
941123 360 1.6- 2.0- 020111 620 1.6+ 0.2+ 080925 B42 0.7- 0.2+
941123 360 (2.0- 2.6-) 020111 213 0.1+ 0.7- 080925 B42 0.9- 0.2+
941124 897 (1.2- 3.2-) 020111 213 0.7+ 0.3+ 080927 H45 1.3- 0.4-
941124 897 1.9- 2.0- 020111 620 1.7+ 0.2+ 080927 H45 1.6- 0.3-
941124 897 1.4- 1.4- 020111 620 1.7+ 0.6+ 080927 H45 (2.3- 0.2-)
941126 410 1.5- 0.9- 020111 170 0.4+ 0.3+ 080927 H45 (2.8- 0.4-)
941126 410 0.9- 1.0- 020111 170 (3.1+ 1.2+) 080927 H45 (3.0- 0.4+)
941126 410 0.8- 1.6- 020112 235 0.1+ 0.3- 080927 H45 1.7- 0.0
941201 118 (3.3- 1.1-) 020114 704 (3.7+ 1.8+) 080927 D81 (5.5- 1.0-)
941203 118 (2.6- 1.2-) 020114 704 (4.2+ 2.6+) 080927 D81 (6.5- 0.5-)
941203 118 1.2- 1.0- 020114 704 0.8+ 2.1+ 080928 213 0.5- 0.4+
941204 897 0.6- 0.7- 020116 046 (4.1+ 2.5+) 080928 213 0.5- 0.2+
941204 897 0.6- 1.6- 020116 046 (3.3+ 1.5+) 080928 213 0.2- 0.1+
941204 360 (2.2- 3.3-) 020116 235 1.3+ 1.1+ 080928 B20 1.9- 1.7+
941204 410 1.0- 0.8- 020117 235 (2.5+ 1.0+) 080928 B20 2.1- 1.5+
941204 360 (2.3- 3.2-) 020117 170 1.1+ 1.4+ 080928 B20 (3.3- 1.1+)
941204 410 1.5- 1.9- 020117 170 (2.9+ 1.3+) 080928 J52 (3.2- 0.5-)
941204 410 2.0- 2.1- 020118 170 1.9+ 0.3- 080928 J52 (2.8- 0.3-)
2001/ 020120 170 2.0+ 1.3+ 080928 J52 (3.4- 0.2-)
011206 170 1.9- 0.1+ 020131 620 (3.7+ 0.7-) 080929 H45 1.9- 0.1-
011206 170 1.5- 0.3- 020131 620 (3.1+ 2.3+) 080929 H45 1.7- 0.4-
011206 170 (3.4- 0.7-) 020201 620 2.0- 1.5- 080929 H45 (2.3- 0.3-)
011206 620 (2.5- 0.3+) 020201 620 (1.3+ 2.8+) 080929 H45 1.0- 0.2-
011206 620 2.0- 0.3+ 020202 170 (3.0- 0.3+) 080929 G96(17.3- 2.3-)
011206 213 1.8- 0.0 020202 170 0.4+ 0.0 080929 G96(17.6- 2.3-)
011206 213 1.6- 0.0 020202 170 1.1+ 0.6- 080929 G96(14.8- 1.8-)
011206 620 (2.9- 0.2+) 020207 360 (3.7+ 1.2+) 080929 G96(13.4- 1.7-)
011206 213 0.8+ 0.0 020207 360 (3.2+ 1.5+) 081001 372 (3.0- 0.2-)
011207 170 1.5- 0.4- 020207 360 (3.2+ 0.4+) 081003 349 (3.2- 0.1+)
011207 213 0.8+ 1.8- 2008/ 081003 349 (2.7- 0.0 )
011207 213 (4.1- 2.2-) 080728 703 1.2+ 0.3- 081004 235 (4.5- 0.4-)
011207 213 0.6- 1.0- 080728 703 1.3+ 0.4+ 081004 A71 (4.6- 0.5-)
011207 213 1.7- 0.9- 080728 703 1.2+ 0.1+ 081004 A71 (4.9- 0.4-)
011207 941 (2.8- 0.1-) 080728 703 (2.4+ 0.0 ) 081004 A71 (3.4- 0.1-)
011207 941 2.2- 0.1+ 080729 246 0.9+ 0.3+ 081006 B49 1.8- 0.4-
011207 941 1.9- 0.0 080729 246 1.1+ 0.5+ 081006 B49 0.5- 1.3-
011207 941 (3.1- 0.4+) 080729 246 1.0+ 0.5+ 081006 B49 1.9- 0.9-
011207 170 0.6- 0.2- 080729 246 1.1+ 0.7+ 081006 B42 0.4- 0.8+
011207 170 0.8- 0.2- 080729 246 0.9+ 0.5+ 081007 J79 (2.3- 0.7+)
011208 349 1.6- 0.0 080729 246 0.9+ 0.5+ 081007 J79 0.9- 0.1-
011208 349 0.5- 0.6+ 080729 246 0.8+ 0.4+ 081007 J79 0.2- 0.3+
011208 349 0.7- 1.0+ 080729 246 1.1+ 0.4+ 081009 D81 (6.2- 0.4-)
011208 213 1.2- 0.3- 080729 246 1.1+ 0.5+ 081009 D81 (5.2- 0.5-)
011208 213 (2.6- 0.7-) 080729 246 1.0+ 0.4+ 081009 D81 (5.0- 0.8-)
011208 611 1.0- 0.1+ 080729 246 1.0+ 0.3+ 081010 J47 1.3- 0.2+
011208 611 1.1- 0.2+ 080729 246 1.0+ 0.2+ 081010 J47 0.0 0.1+
011208 213 1.3- 0.4- 080730 B40 0.7+ 0.2+ 081010 J47 0.2+ 0.3+
011208 118 0.0 0.4+ 080730 B40 0.1+ 0.3- 081010 J47 0.4+ 0.3+
011208 118 0.1- 0.1- 080730 D78 (2.5+ 0.9+) 081010 J47 0.1- 0.4+
011208 118 0.9- 0.2+ 080730 D78 1.5+ 1.6+ 081010 J59 1.9- 0.1-
011208 611 1.1- 0.0 080730 D78 (2.8+ 0.8+) 081010 J59 (3.2- 0.6-)
011209 170 1.0- 0.2- 080730 349 1.4+ 0.5+ 081010 J59 1.9- 0.2-
011209 170 1.5- 0.1- 080730 349 1.9+ 0.4+ 081011 B37 0.3- 0.4-
011209 170 0.6- 0.0 080730 349 2.0+ 0.8+ 081011 B37 (2.5- 0.1-)
011209 170 0.5- 0.1- 080801 204 0.8+ 0.3+ 081011 B37 (3.1- 1.3+)
011209 309 0.7+ 0.3- 080801 204 0.9+ 0.1+ 081011 B37 (3.7- 0.2+)
011209 691 0.2+ 0.4- 080802 349 0.1- 0.2+ 081012 J47 0.5+ 0.2+
011209 691 0.9- 0.0 080802 349 0.3+ 0.1- 081012 J47 0.7+ 0.2+
011209 691 0.3- 0.3- 080802 349 0.1+ 0.0 081012 J47 0.7+ 0.3+
011209 118 0.7+ 0.5- 080803 204 0.4+ 0.1+ 081012 J47 1.3+ 0.1+
011209 118 0.3- 0.1+ 080803 204 0.5+ 0.1+ 081013 J47 0.9- 0.9+
011209 118 0.5- 0.1+ 080803 B40 0.4- 0.3+ 081013 J47 0.7- 0.8+
011209 235 0.4+ 0.7- 080803 204 0.4+ 0.1+ 081015 900 0.7- 0.0
011209 046 0.3+ 0.1- 080803 B40 0.3- 0.2- 081015 900 0.4+ 0.2-
011209 046 0.1- 0.1- 080803 204 0.6+ 0.1+ 081019 H45 0.0 0.4+
011209 046 0.6- 0.2+ 080803 B40 0.5- 0.1- 081019 H45 0.2+ 0.5+
011209 046 0.0 0.8- 080803 704 1.2- 0.3+ 081019 H45 0.4+ 0.2+
011209 046 0.6- 0.4+ 080803 704 (2.5- 0.7+) 081019 H45 0.4+ 0.0
011209 046 1.8- 0.1- 080803 704 0.6- 1.2+ 081019 H45 0.5- 0.0
011209 046 1.9- 0.2+ 080803 704 (2.5- 0.3+) 081020 H68 0.8- 0.0
011209 046 1.3- 0.6- 080803 704 1.8- 0.6+ 081020 H68 1.2- 0.5+
011209 170 (2.7- 0.3+) 080811 J47 1.6+ 1.2+ 081020 H68 1.1- 0.3+
011209 170 0.7- 0.5+ 080811 J47 0.7+ 1.2+ 081020 H68 1.3- 0.1+
011209 170 0.3- 0.5+ 080811 J47 0.7+ 0.8+ 081020 H68 1.2- 0.3+
011209 170 0.2- 0.8+ 080812 J51 0.5- 0.1- 081021 J47 1.0+ 0.4+
011209 611 0.2- 0.0 080812 J51 0.5- 0.2- 081021 J47 1.1+ 0.4+
011209 611 0.0 0.0 080812 J51 0.2- 0.1- 081021 J47 1.0+ 0.3+
011209 611 0.3- 0.2- 080815 J40 1.3+ 0.4+ 081021 J47 0.5- 0.3+
011210 309 0.7+ 0.3- 080815 J40 2.1+ 1.1+ 081021 B42 0.6+ 0.7+
011210 349 0.1- 0.5+ 080815 J40 1.3+ 0.6+ 081022 B42 1.0+ 0.5+
011210 349 0.9+ 0.2- 080815 J40 0.7+ 1.0+ 081024 J47 0.3+ 0.2+
011210 349 0.6- 0.7+ 080817 J51 0.3- 0.1+ 081024 J47 1.4+ 0.7+
011210 235 (5.7- 1.6+) 080817 J51 0.4- 0.0 081024 J47 1.1+ 0.3+
011210 587 0.1+ 0.0 080817 J51 0.4- 0.1+ 081024 J47 0.6+ 0.1+
011210 587 0.6- 0.5- 080822 213 1.2- 0.3+ 081025 H45 0.3+ 0.2+
011211 422 0.1+ 0.2- 080822 213 1.3- 0.3+ 081025 H45 0.5+ 0.3+
011211 422 0.7- 0.3- 080822 213 1.5- 0.2- 081025 H45 0.1- 0.2+
011211 422 0.3- 0.6- 080826 J51 (6.4- 0.3-) 081025 H45 0.3+ 0.1-
011211 213 0.7- 0.7- 080826 J51 (4.4- 1.3-) 081025 H45 0.4- 0.0
011211 213 0.6- 0.9+ 080826 J51 (3.2- 1.2-) 081025 H45 0.2+ 0.1+
011211 170 0.9+ 0.2- 080827 H45 0.4- 0.3- 081025 235 0.8+ 0.0
011211 213 0.6+ 0.1+ 080827 H45 0.7- 0.5- 081025 213 1.2+ 0.1+
011211 170 0.4- 0.2+ 080827 H45 0.5- 0.4- 081025 213 1.1+ 0.1+
011211 170 1.0- 0.2+ 080827 H45 0.3- 0.3- 081025 213 1.0+ 0.3+
011211 170 0.4- 0.4+ 080827 H45 0.5- 0.3- 081026 232 0.8+ 0.1+
011212 235 0.1+ 0.9+ 080827 H45 0.5- 0.2- 081026 232 0.7+ 0.1+
011213 170 1.3- 0.9+ 080828 215 1.9- 0.6- 081026 232 0.7+ 0.1+
011213 170 0.3+ 0.1+ 080828 215 1.8- 0.5- 081026 B20 1.2+ 0.5+
011213 170 1.1- 0.2+ 080828 215 1.7- 0.2- 081026 B20 0.9+ 0.7+
011214 235 0.4- 1.2+ 080828 H45 0.3- 0.2+ 081026 B20 1.0+ 0.6+
011214 046 0.2- 0.2+ 080828 H45 0.1- 0.5+ 081026 B37 0.6+ 0.6+
011214 046 0.1- 0.2- 080828 H45 0.3- 0.4+ 081026 B37 0.9+ 0.6+
011214 046 0.5- 0.2- 080828 H45 0.6- 0.4+ 081026 B37 1.2+ 0.3+
011214 046 0.2- 1.1+ 080828 H45 0.4- 0.3+ 081026 B37 1.3+ 0.4+
011214 046 0.0 0.8+ 080828 H45 0.4- 0.4+ 081026 850 0.3+ 0.5+
011214 046 0.4- 1.3+ 080829 A02 (6.5- 1.4-) 081026 850 0.3+ 0.1+
011215 587 0.1+ 0.3+ 080829 A02 (5.2- 0.8-) 081026 B42 1.4+ 0.7+
011215 587 0.6- 0.1+ 080829 A02 2.2- 0.2- 081026 B42 1.6+ 0.5+
011216 941 (3.3- 0.7-) 080830 232 0.3- 0.4- 081027 704 (3.7+ 0.3-)
011216 941 1.5- 0.1- 080830 213 0.3- 0.4+ 081027 704 (1.4+ 3.8+)
011216 941 1.9- 0.2+ 080830 232 1.1- 0.5- 081027 704 1.7+ 1.7+
011216 235 0.3+ 0.3- 080830 213 0.3+ 0.4+ 081027 704 (2.3- 0.8+)
011216 213 0.1- 1.2+ 080830 213 0.4- 0.5+ 081028 844 0.6+ 0.5+
011216 213 0.8+ 0.7+ 080830 939 (3.3- 0.3-) 081028 844 0.2- 0.5+
011217 704 1.0+ 1.6+ 080830 939 (3.0- 0.0 ) 081028 844 0.1- 0.7+
011217 704 0.8- 1.6+ 080830 939 (2.9- 0.0 ) 081028 H45 1.1+ 0.0
011217 704 (5.8- 1.7+) 080830 232 1.9- 0.4- 081028 H45 0.6+ 0.0
011217 704 (3.5- 0.9+) 080830 J47 1.1- 0.4+ 081028 H45 0.9+ 0.2+
011218 704 1.4- 0.3+ 080830 J47 1.4- 0.7+ 081028 H45 0.7+ 0.1+
011218 704 0.4+ 0.3+ 080830 J47 2.1- 0.5+ 081028 H45 0.9+ 0.1+
011218 704 0.4- 0.0 080830 170 0.0 0.1- 081028 H45 1.3+ 0.0
011218 360 1.0+ 0.1- 080830 170 0.3+ 0.3- 081030 850 0.2+ 0.4+
011218 360 0.7+ 0.3- 080830 844 0.7- 0.4+ 081030 850 0.8+ 0.3+
011218 235 1.5- 0.5- 080830 844 0.2- 0.4+ 081030 900 0.6+ 0.2+
011219 213 0.1+ 1.9- 080830 844 0.8- 0.8+ 081030 900 0.6+ 0.2+
011219 213 1.2+ 0.5- 080830 844 0.2+ 0.9+ 081031 H45 0.4+ 0.1+
011219 170 0.3- 0.4- 080830 844 0.0 0.8+ 081031 H45 0.6+ 0.1+
011220 170 1.4+ 0.4- 080831 372 0.8+ 0.7+ 081031 H45 0.8+ 0.2+
011220 170 0.8- 0.6- 080902 349 1.0- 0.1+ 081031 H45 0.4+ 0.3+
011220 170 0.0 0.2- 080902 349 1.1- 0.2+ 081031 H45 0.9+ 0.2+
011220 170 0.1+ 0.3- 080902 349 1.0- 0.2+ 081031 H45 0.7+ 0.0
NAKANO
**** Don't distribute anyone except personal use only ****
(C) Copyright 2008 OAA/ComputingSection
write mail from CFAD0::NAKANO on 2008-11-05 05:02:23(JST).
51P/Harrington - A
Epoch 2008 June 23.0 TT = JDT 2454640.5
T 2008 June 18.43402 TT Nakano
q 1.6875593 (2000.0) P Q
n 0.13829143 Peri. 269.19040 +0.98798604 +0.12263015
a 3.7034448 Node 83.76204 -0.07449155 +0.91108824
e 0.5443271 Incl. 5.42889 -0.13540533 +0.39354805
P 7.13
From 366 observations 1994-2008, mean residual 0".98.
Nongravitational parameters A1 = +1.74 +/- 0.04, A2 = +0.2737 +/- 0.0039.
The comet has split in 1994 and 2001 returns and has passed 0.37 AU
from Jupiter on 2003 Oct. 24 UT.
NAKANO
**** Don't distribute anyone except personal use only ****
(C) Copyright 2008 OAA/ComputingSection
write mail from CFAD0::NAKANO on 2008-08-02 06:17:05(JST).
◎51P/Harringtonの軌道と予報位置 [From YC 2591]
今年６月に近日点を通過したこの彗星が2008年７月28日にカテリナ，７月29日に
クレットで再観測されました．彗星のCCD全光度は，カテリナでは15.8等，クレット
では14.8等と観測されています．彗星の再観測の位置には，予報軌道（NK 961）か
ら赤経方向に+0ﾟ.36，赤緯方向に+0ﾟ.14のずれが見られ，近日点通過の補正値にし
て儺=-0.93日でした．儺が大きかったのは，彗星は，1994年にB核とC核，2001年
にD核に分裂しており，さらに2003年10月24日に木星に0.37 AUまで接近した影響に
よるものでしょう．
なお，D核は，2001年の分裂時には最大15.8等級（そのときのA核とほぼ同程度）
と明るく観測されており，もし生き残っているならば，その近日点通過（予報値
2008年６月19.168日TT）は，A核と同程度のずれが推測され，６月18.24日くらいの
位置を動いていることになります．
彗星は，７月30日に上尾の門田健一氏（K. Kadota, Ageo）と伊賀の田中利彦氏
（T. Tanaka, Iga-Ueno）によって捕らえられました．CCD全光度は，それぞれ，
15.5等と15.1等でした．
51P/Harrington - A
Epoch 2008 June 23.0 TT = JDT 2454640.5
T 2008 June 18.43402 TT Nakano
q 1.6875593 (2000.0) P Q
n 0.13829143 Peri. 269.19040 +0.98798604 +0.12263015
a 3.7034448 Node 83.76204 -0.07449155 +0.91108824
e 0.5443271 Incl. 5.42889 -0.13540533 +0.39354805
P 7.13
From 366 observations 1994-2008, mean residual 0".98.
Nongravitational parameters A1 = +1.74 +/- 0.04, A2 = +0.2737 +/- 0.0039.
2008/ α (2000) δ △ ｒ Daily motion Elong. Phase m1 天文薄明開始時
27h JST h m ｡ , AU AU , ｡ ｡ ｡ 等 h｡ A ｡
Aug. 1 03 24.38 +13 12.6 1.649 1.742 31.6/ 76 77.7 34.7 15.3 +41.6 284.9
2 03 26.48 +13 20.2 1.643 1.744 31.3/ 76 78.1 34.7 15.3 +42.3 285.4
3 03 28.56 +13 27.7 1.638 1.747 31.0/ 76 78.5 34.7 15.3 +42.9 285.8
4 03 30.63 +13 35.1 1.632 1.749 30.8/ 76 78.9 34.7 15.3 +43.6 286.3
5 03 32.68 +13 42.4 1.627 1.752 30.5/ 76 79.4 34.7 15.4 +44.2 286.8
6 03 34.72 +13 49.5 1.621 1.754 30.2/ 77 79.8 34.7 15.4 +44.9 287.2
7 03 36.74 +13 56.4 1.616 1.757 29.9/ 77 80.3 34.7 15.4 +45.6 287.8
8 03 38.74 +14 03.2 1.610 1.759 29.6/ 77 80.7 34.7 15.4 +46.2 288.3
9 03 40.72 +14 09.9 1.605 1.762 29.4/ 77 81.2 34.6 15.4 +46.9 288.8
10 03 42.69 +14 16.5 1.599 1.765 29.1/ 77 81.7 34.6 15.4 +47.6 289.3
11 03 44.64 +14 22.9 1.594 1.768 28.8/ 77 82.1 34.6 15.4 +48.2 289.9
12 03 46.57 +14 29.2 1.588 1.771 28.5/ 77 82.6 34.6 15.4 +48.9 290.5
13 03 48.49 +14 35.4 1.583 1.774 28.2/ 78 83.1 34.5 15.5 +49.5 291.1
14 03 50.38 +14 41.4 1.577 1.777 27.8/ 78 83.6 34.5 15.5 +50.2 291.7
15 03 52.26 +14 47.3 1.572 1.780 27.5/ 78 84.1 34.5 15.5 +50.9 292.3
16 03 54.11 +14 53.1 1.566 1.783 27.2/ 78 84.6 34.4 15.5 +51.5 293.0
17 03 55.95 +14 58.7 1.561 1.786 26.9/ 78 85.1 34.4 15.5 +52.2 293.7
18 03 57.77 +15 04.3 1.555 1.789 26.6/ 78 85.6 34.3 15.5 +52.8 294.4
19 03 59.56 +15 09.7 1.549 1.792 26.2/ 78 86.1 34.3 15.6 +53.5 295.1
20 04 01.34 +15 14.9 1.544 1.795 25.9/ 78 86.6 34.2 15.6 +54.2 295.8
21 04 03.09 +15 20.1 1.538 1.798 25.6/ 79 87.2 34.2 15.6 +54.8 296.6
22 04 04.82 +15 25.1 1.533 1.802 25.2/ 79 87.7 34.1 15.6 +55.5 297.4
23 04 06.53 +15 30.1 1.527 1.805 24.9/ 79 88.2 34.0 15.6 +56.1 298.2
24 04 08.22 +15 34.9 1.521 1.809 24.5/ 79 88.8 34.0 15.6 +56.8 299.1
25 04 09.89 +15 39.6 1.516 1.812 24.1/ 79 89.3 33.9 15.6 +57.4 300.0
26 04 11.53 +15 44.1 1.510 1.815 23.8/ 79 89.9 33.8 15.7 +58.0 300.9
27 04 13.14 +15 48.6 1.505 1.819 23.4/ 79 90.4 33.7 15.7 +58.7 301.9
28 04 14.73 +15 52.9 1.499 1.822 23.0/ 79 91.0 33.6 15.7 +59.3 302.9
29 04 16.30 +15 57.2 1.493 1.826 22.6/ 79 91.6 33.6 15.7 +59.9 303.9
30 04 17.84 +16 01.3 1.488 1.830 22.2/ 79 92.2 33.5 15.7 +60.5 305.0
31 04 19.36 +16 05.4 1.482 1.833 21.8/ 80 92.8 33.4 15.8 +61.2 306.1
Sept. 1 04 20.85 +16 09.3 1.477 1.837 21.4/ 80 93.4 33.3 15.8 +61.8 307.3
m1 = 7.0 + 5 log △ + 30.0 log ｒ
NAKANO
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write mail from CFAD0::NAKANO on 2008-08-01 05:24:01(JST).
51P/Harrington-A
Epoch 2008 June 23.0 TT = JDT 2454640.5
T 2008 June 19.36404 TT Nakano
q 1.6876634 (2000.0) P Q
n 0.13821993 Peri. 269.19212 +0.98800311 +0.12253558
a 3.7047218 Node 83.76579 -0.07442812 +0.91109751
e 0.5444561 Incl. 5.42560 -0.13531557 +0.39355604
P 7.13 (+/- 0.01 day)
From 372 observations 1994-2002, mean residual 0".87.
Nongravitational parameters A1 = +1.38 +/- 0.04, A2 = +1.1316 +/- 0.0443.
The comet will pass 0.37 AU from Jupiter on 2003 Oct. 23.
NAKANO
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write mail from CFAD0::NAKANO on 2003-10-19 02:58:01(JST).
51P/Harrington-A
Epoch 2001 June 20.0 TT = JDT 2452080.5
T 2001 June 5.74568 TT Nakano
q 1.5681332 (2000.0) P Q
n 0.14554791 Peri. 233.60181 +0.98407178 +0.11973623
a 3.5793052 Node 119.18063 -0.07118443 +0.94271263
e 0.5618889 Incl. 8.65593 -0.16289722 +0.31137779
P 6.77
From 324 observations 1994-2002, mean residual 0".87. Nongravitational
parameters A1 = +1.38 +/- 0.04, A2 = +1.1280 +/- 0.0478.
NAKANO
**** Don't distribute anyone except personal use only ****
(C) Copyright 2002 OAA/ComputingSection
write mail from CFAD0::NAKANO on 2002-01-29 00:05:43(JST).
51P/Harrington-D
Epoch 2008 June 23.0 TT = JDT 2454640.5
T 2008 June 19.16827 TT Nakano
q 1.6879343 (2000.0) P Q
n 0.13824615 Peri. 269.15880 +0.98798597 +0.12265863
a 3.7042534 Node 83.79186 -0.07453943 +0.91110546
e 0.5443254 Incl. 5.42648 -0.13537947 +0.39349931
P 7.13 (+/- 0.01 day)
From 304 observations 1994-2002 using Nucleus A observations in 1994-1995
and 2001 Sept. 23-Oct. 2, mean residual 0".88.
Nongravitational parameters A1 = +3.17 +/- 0.05, A2 = +0.7066 +/- 0.0538.
The comet will pass 0.37 AU from Jupiter on 2003 Oct. 23.
Residuals in seconds of arc
1994/ 941204 410 0.7+ 1.5- 011211 213 2.1+ 0.1+
940501 691 0.4- 0.9+ 941206 360 (0.7+ 3.1-) 011211 170 0.1+ 0.1+
940501 691 1.0- 1.4+ 941206 360 (0.8+ 3.0-) 011211 170 1.0+ 0.8+
940501 691 0.5+ 0.4+ 941206 359 (0.3+ 4.2-) 011211 170 0.3- 0.7+
940502 691 1.6- 0.7- 941206 359 (1.3+ 3.2-) 011212 235 0.1- 0.9+
940502 691 1.0- 0.0 941209 691 (0.0 2.5-) 011213 170 (2.3+ 0.4+)
940502 691 0.6- 0.7+ 941209 691 (0.9- 3.0-) 011213 170 0.1- 0.1+
940502 691 1.6- 0.4+ 941209 691 (0.4- 2.9-) 011213 170 (2.4- 1.2+)
940508 360 1.5- 0.9- 941222 360 (0.5- 2.7-) 011214 235 0.7- 1.2+
940508 360 0.9- 0.8- 941222 360 (0.1+ 3.0-) 011214 046 0.3- 0.7-
940522 360 0.4+ 0.1- 941229 410 1.4+ 1.5- 011214 046 1.4- 0.3+
940522 360 0.2+ 0.3+ 941229 410 1.1- 2.2- 011214 046 1.6- 0.2+
940605 360 1.2+ 0.1+ 941229 410 (1.1+ 2.4-) 011214 046 0.4+ 0.5+
940605 360 0.6+ 0.4- 941231 897 0.4+ 0.9- 011214 046 1.0+ 0.0
940613 691 0.1+ 0.9+ 941231 897 (5.9+ 3.9-) 011214 046 0.3- 0.4-
940613 691 0.5- 0.9+ 941231 897 1.6+ 1.1- 011215 587 0.6+ 0.6-
940613 691 0.3+ 0.8+ 941231 897 (3.9+ 0.7+) 011215 587 0.4- 0.2-
940707 360 (2.3+ 0.4+) 1995/ 011216 941 1.0- 0.7-
940707 360 1.8+ 0.1+ 950102 410 (1.4+ 2.3-) 011216 941 0.0 0.3-
940715 360 2.0+ 0.5+ 950102 410 1.2+ 1.4- 011216 941 1.1- 0.1+
940715 360 1.7+ 0.3+ 950102 410 1.1+ 1.6- 011216 235 (2.6- 0.3-)
940728 897 1.5+ 0.9- 950103 691 (1.5- 3.5-) 011216 213 1.6- 0.2-
940728 897 0.2- 0.3- 950103 691 (1.2- 3.4-) 011216 213 1.5+ 0.7-
940728 897 0.9+ 0.7- 950128 691 (1.8- 3.1-) 011218 360 0.5- 0.4-
940803 360 2.0+ 0.2- 950128 691 (1.4- 3.1-) 011218 360 0.5- 0.6-
940803 360 (2.6+ 0.2-) 950128 691 (1.6- 3.5-) 011218 235 2.1- 0.4-
940804 897 1.3+ 1.3- 2001/ 011219 213 1.0- 1.0-
940804 897 0.9+ 0.0 010923 349 0.7+ 0.4- 011219 213 0.3- 0.0
940813 381 1.6+ 0.0 010923 349 0.9+ 0.4- 011219 170 1.0+ 0.6-
940813 381 1.5+ 0.1+ 010923 402 1.9+ 0.8- 011220 170 1.8+ 0.1-
940814 897 0.5+ 1.2- 010923 402 1.8+ 0.9- 011220 170 (2.7+ 0.5-)
940814 897 0.2+ 0.4- 010923 402 1.9+ 0.8- 011220 170 1.3+ 0.1-
940815 360 1.2+ 0.1- 010924 170 0.4+ 1.1- 011220 170 1.6+ 0.8+
940815 360 1.5+ 0.0 010924 170 0.7+ 1.1- 011220 170 0.4+ 0.5+
940902 801 1.9- 0.5+ 010924 170 0.7+ 1.1- 011222 213 1.0- 0.0
940902 801 2.0- 0.4+ 010924 349 0.8+ 0.6- 011222 213 1.6+ 0.1+
940907 801 1.8- 0.4+ 010924 349 0.6+ 0.2- 011222 213 1.8- 0.9+
940907 801 1.5- 0.2+ 010924 349 0.9+ 0.5- 011222 213 0.4+ 0.0
940908 360 0.4- 0.5+ 010924 349 0.8+ 0.5- 011223 461 0.2+ 0.2-
940908 360 0.4- 0.5+ 010925 903 1.3- 0.8- 011223 461 0.0 0.5-
940909 410 0.8- 0.3- 010925 903 1.1- 1.5- 011223 461 0.7- 0.3+
940909 410 1.8- 0.2- 010925 903 1.0- 0.9- 011223 461 0.5- 0.0
940910 693 1.8- 1.1- 010928 349 1.2+ 0.7- 011223 235 0.1- 0.7+
940910 693 1.9- 1.0- 010928 349 1.4+ 0.2- 011224 170 (2.5+ 0.0 )
940910 693 1.9- 1.0- 010928 349 0.9+ 0.3- 011224 170 0.3- 0.1-
940913 360 0.9- 0.3+ 010928 349 1.1+ 0.3- 011224 461 0.7- 1.0+
940913 360 1.0- 0.3+ 011002 349 2.1+ 0.6- 011225 213 (4.7- 1.1+)
940925 897 1.0- 0.3- 011002 349 1.3+ 0.2- 011225 213 1.0- 1.6-
940925 897 (2.6- 0.8+) 011002 349 1.2+ 0.9- 011225 213 (2.8- 0.2-)
940925 897 1.2- 0.5+ 011002 349 1.4+ 0.4- 011225 170 0.7- 0.2-
940930 897 1.9- 0.5+ 011019 170 0.2- 0.4- 011225 170 (3.4+ 1.0-)
940930 897 1.4- 0.9+ 011025 170 1.0- 0.9- 011226 349 0.3- 0.2-
941001 410 0.9- 0.9+ 011025 170 0.2- 1.2- 011226 349 0.1- 2.1+
941001 410 1.1- 0.8+ 011025 170 0.2+ 0.9- 2002/
941002 360 0.1- 0.7+ 011206 170 0.2- 0.1- 020101 235 0.1- 1.2+
941002 360 0.3- 0.7+ 011206 170 (4.0+ 0.2+) 020102 235 1.4- 1.3-
941004 801 (3.0- 1.6+) 011206 170 1.2+ 0.0 020103 613 1.7+ 0.0
941004 801 1.3- 1.1+ 011206 213 1.3- 0.6+ 020103 613 0.5- 0.1+
941004 691 0.0 0.4+ 011206 213 1.9- 0.5+ 020103 613 1.0+ 0.6+
941004 691 0.2- 0.6+ 011206 213 0.3- 0.5+ 020104 215 0.1+ 0.1+
941004 691 0.5- 0.4+ 011207 170 1.1+ 0.1+ 020104 215 1.1- 0.6+
941004 691 0.2- 0.5+ 011207 213 (2.3- 0.8-) 020104 215 0.0 0.3+
941005 046 0.8- 0.9+ 011207 213 (5.0- 0.5+) 020104 046 1.0- 0.8+
941005 046 0.8- 0.9+ 011207 213 1.2- 0.1- 020104 046 0.8- 0.1+
941005 046 0.7- 0.9+ 011207 213 (1.3- 2.6+) 020104 046 1.2- 0.2+
941005 691 0.1+ 0.0 011207 941 0.2+ 0.2- 020104 046 1.4- 0.0
941005 691 0.0 0.1+ 011207 941 0.7- 0.1+ 020104 235 0.7- 0.1+
941007 557 0.2- 0.6+ 011207 941 0.7- 0.3+ 020104 613 (3.0+ 0.1-)
941007 046 0.6- 0.4+ 011207 941 1.6- 0.6+ 020106 235 2.1- 0.4+
941007 557 0.6- 0.4+ 011207 170 (4.7- 2.1-) 020107 235 1.1- 1.1+
941007 046 0.5- 0.4+ 011207 170 1.3- 1.0- 020107 170 1.4+ 1.0+
941007 046 0.6- 0.6+ 011208 349 0.1+ 0.9- 020108 235 0.7+ 0.2+
941007 557 0.3- 0.3+ 011208 213 0.3- 0.5- 020109 587 0.5+ 0.4+
941007 801 (2.5- 0.4+) 011208 213 (2.0- 3.3+) 020109 587 1.1- 0.4+
941007 801 1.0- 0.8+ 011208 611 0.6- 0.0 020110 046 0.2- 0.5+
941008 557 0.1- 0.5+ 011208 611 0.9- 0.1+ 020110 046 0.2- 0.1-
941008 557 0.2- 0.5+ 011208 213 2.2+ 0.1+ 020110 046 0.3- 0.9+
941009 557 0.2- 0.2+ 011208 118 0.8- 0.3+ 020110 235 0.0 1.4+
941009 557 0.2- 0.5+ 011208 118 0.4- 0.1- 020111 360 0.2- 0.2-
941010 557 0.0 0.7+ 011208 118 0.0 0.1- 020111 360 0.4- 0.3+
941010 557 0.0 0.5+ 011208 118 0.3- 0.2+ 020111 620 1.3+ 1.0+
941014 897 0.7+ 0.4+ 011208 611 0.7- 0.3- 020111 213 0.4+ 0.9-
941014 897 1.1- 0.7+ 011209 170 0.3- 1.0+ 020111 213 0.3- 0.3-
941014 360 0.0 0.3+ 011209 170 0.2+ 0.3- 020111 620 1.2+ 1.0+
941014 360 0.0 0.3+ 011209 170 0.5- 1.0+ 020111 620 0.6+ 0.5+
941030 360 0.9+ 0.5+ 011209 309 0.4- 0.6- 020111 170 0.6+ 0.5-
941030 360 0.4+ 0.3+ 011209 691 0.5- 0.3- 020111 170 1.1+ 0.4+
941101 897 0.9+ 1.2+ 011209 118 1.0- 0.2- 020112 235 0.4- 0.0
941101 897 (0.2+ 2.4+) 011209 118 0.5- 0.4+ 020114 704 (2.5- 1.1+)
941104 410 0.2+ 1.5+ 011209 118 0.8- 0.0 020114 704 0.9+ 1.2+
941104 410 0.4+ 2.1+ 011209 235 0.5+ 1.6+ 020114 704 (5.4+ 3.1+)
941107 691 0.5+ 1.0- 011209 046 0.5- 0.4- 020116 046 0.9+ 1.2+
941107 691 0.7+ 0.9- 011209 046 0.2- 0.6- 020116 046 0.1- 1.0+
941108 801 0.8+ 0.8- 011209 046 0.9+ 0.1- 020116 235 1.8- 0.9-
941108 801 0.9+ 0.6+ 011209 046 0.5- 0.0 020117 235 0.7- 1.4+
941108 360 0.9+ 0.7- 011209 046 0.8- 0.4+ 020117 170 0.2- 1.6+
941108 360 0.8+ 0.7- 011209 046 1.4+ 0.3- 020117 170 2.0+ 0.1-
941109 691 0.4+ 1.2- 011209 046 (2.6+ 0.3+) 020118 170 2.2+ 0.0
941109 691 0.6+ 1.3- 011209 046 0.5+ 0.4+ 020120 170 1.2- 0.3+
941109 691 0.5+ 1.4- 011209 170 0.6+ 0.2- 020129 461 0.9+ 0.9-
941123 410 1.4+ 0.3- 011209 170 0.4- 0.4- 020129 461 1.3+ 0.7-
941123 410 0.1- 0.6- 011209 170 0.7+ 0.3- 020129 461 0.2- 1.3+
941123 360 0.6+ 1.4- 011209 170 1.7+ 0.9+ 020131 620 0.6- 0.1+
941123 360 0.2+ 2.0- 011209 611 0.3- 0.3- 020131 620 0.7- 0.2-
941124 897 (1.0+ 2.6-) 011209 611 1.5- 0.3- 020201 402 0.0 0.3+
941124 897 0.3+ 1.4- 011209 611 1.7- 0.4- 020201 402 1.0+ 0.6+
941124 897 0.8+ 0.8- 011210 309 0.3- 0.4- 020201 402 1.5+ 1.4+
941126 410 0.8+ 0.3- 011210 349 0.6+ 0.8+ 020201 620 1.0- 1.0+
941126 410 1.4+ 0.4- 011210 349 0.4+ 0.9+ 020201 620 (0.7+ 2.8+)
941126 410 1.5+ 1.0- 011210 349 1.3+ 0.6+ 020202 170 0.2+ 0.8+
941201 118 0.7- 0.4- 011210 235 (3.4- 1.6+) 020202 170 0.6+ 0.9+
941203 118 0.0 0.5- 011210 587 0.9- 0.3+ 020202 170 0.6+ 0.3+
941203 118 1.4+ 0.3- 011210 587 0.9- 0.7+ 020207 360 0.8+ 1.0+
941204 897 2.1+ 0.1- 011211 422 0.5- 0.1+ 020207 360 1.1+ 0.9+
941204 897 2.1+ 0.9- 011211 422 0.2- 0.0 020207 360 1.0+ 0.4+
941204 360 (0.4+ 2.6-) 011211 422 0.7- 0.1- 020310 587 1.5- 0.8-
941204 410 1.7+ 0.1- 011211 213 1.1+ 0.1+ 020310 587 1.1+ 0.4+
941204 360 (0.3+ 2.5-) 011211 213 0.2- 0.0
941204 410 1.1+ 1.3- 011211 170 0.5+ 0.2+
NAKANO
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write mail from CFAD0::NAKANO on 2003-10-19 02:58:01(JST).
51P/Harrington-D
Epoch 2001 June 20.0 TT = JDT 2452080.5
T 2001 June 5.72516 TT Nakano
q 1.5681143 (2000.0) P Q
n 0.14557364 Peri. 233.59529 +0.98405645 +0.11986169
a 3.5788834 Node 119.17985 -0.07130415 +0.94270290
e 0.5618426 Incl. 8.65589 -0.16293746 +0.31135899
P 6.77
From 286 observations 1994-2002 including Nucleus A observations in 1994-1995
and 2001 Sept. 23-Oct. 2, mean residual 0".88. Nongravitational
parameters A1 = +3.24 +/- 0.05, A2 = +0.6885 +/- 0.0575.
NAKANO
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write mail from CFAD0::NAKANO on 2002-01-29 00:05:43(JST).
◎51P/Harrington A, Dの軌道と予報位置です
51P/Harrington-A
Epoch 2001 June 20.0 TT = JDT 2452080.5
T 2001 June 5.74568 TT Nakano
q 1.5681332 (2000.0) P Q
n 0.14554791 Peri. 233.60181 +0.98407178 +0.11973623
a 3.5793052 Node 119.18063 -0.07118443 +0.94271263
e 0.5618889 Incl. 8.65593 -0.16289722 +0.31137779
P 6.77
From 324 observations 1994-2002, mean residual 0".87. Nongravitational
parameters A1 = +1.38 +/- 0.04, A2 = +1.1280 +/- 0.0478.
51P/Harrington-D
Epoch 2001 June 20.0 TT = JDT 2452080.5
T 2001 June 5.72516 TT Nakano
q 1.5681143 (2000.0) P Q
n 0.14557364 Peri. 233.59529 +0.98405645 +0.11986169
a 3.5788834 Node 119.17985 -0.07130415 +0.94270290
e 0.5618426 Incl. 8.65589 -0.16293746 +0.31135899
P 6.77
From 286 observations 1994-2002 including Nucleus A observations in 1994-1995
and 2001 Sept. 23-Oct. 2, mean residual 0".88. Nongravitational
parameters A1 = +3.24 +/- 0.05, A2 = +0.6885 +/- 0.0575.
51P/Harrington-A
OBSERVATORY: 349 139.5492 0.81036 +0.58397 Ageo [Kadota]
Date Time (UT) R. A. (2000) Decl. Delta R Mag.
Year Mo. D. h m s h m s ｡ , " AU AU V
2002 1 25 00 00 00 04 53 46.1 +16 48 42 1.91831 2.651 17.8
2002 1 26 00 00 00 04 53 46.9 +16 53 17 1.93471 2.657 17.8
2002 1 27 00 00 00 04 53 49.4 +16 57 52 1.95125 2.663 17.8
2002 1 28 00 00 00 04 53 53.4 +17 02 27 1.96795 2.669 17.9
2002 1 29 00 00 00 04 53 59.1 +17 07 01 1.98479 2.676 17.9
2002 1 30 00 00 00 04 54 06.4 +17 11 35 2.00176 2.682 17.9
2002 1 31 00 00 00 04 54 15.2 +17 16 09 2.01887 2.688 18.0
2002 2 1 00 00 00 04 54 25.5 +17 20 42 2.03612 2.694 18.0
2002 2 2 00 00 00 04 54 37.4 +17 25 15 2.05349 2.700 18.0
2002 2 3 00 00 00 04 54 50.7 +17 29 47 2.07099 2.706 18.1
2002 2 4 00 00 00 04 55 05.5 +17 34 19 2.08861 2.712 18.1
2002 2 5 00 00 00 04 55 21.8 +17 38 50 2.10635 2.718 18.1
2002 2 6 00 00 00 04 55 39.6 +17 43 20 2.12421 2.724 18.2
2002 2 7 00 00 00 04 55 58.8 +17 47 50 2.14217 2.730 18.2
2002 2 8 00 00 00 04 56 19.3 +17 52 18 2.16025 2.736 18.2
2002 2 9 00 00 00 04 56 41.3 +17 56 46 2.17843 2.742 18.3
2002 2 10 00 00 00 04 57 04.7 +18 01 13 2.19671 2.749 18.3
2002 2 11 00 00 00 04 57 29.4 +18 05 38 2.21508 2.755 18.3
2002 2 12 00 00 00 04 57 55.4 +18 10 03 2.23355 2.761 18.4
2002 2 13 00 00 00 04 58 22.7 +18 14 26 2.25211 2.767 18.4
2002 2 14 00 00 00 04 58 51.4 +18 18 49 2.27076 2.773 18.4
2002 2 15 00 00 00 04 59 21.3 +18 23 10 2.28948 2.779 18.5
2002 2 16 00 00 00 04 59 52.4 +18 27 29 2.30829 2.785 18.5
2002 2 17 00 00 00 05 00 24.8 +18 31 47 2.32717 2.791 18.5
2002 2 18 00 00 00 05 00 58.4 +18 36 04 2.34612 2.797 18.6
2002 2 19 00 00 00 05 01 33.1 +18 40 19 2.36514 2.803 18.6
2002 2 20 00 00 00 05 02 09.1 +18 44 33 2.38422 2.809 18.6
2002 2 21 00 00 00 05 02 46.1 +18 48 45 2.40337 2.815 18.6
2002 2 22 00 00 00 05 03 24.3 +18 52 56 2.42257 2.821 18.7
2002 2 23 00 00 00 05 04 03.6 +18 57 04 2.44182 2.827 18.7
2002 2 24 00 00 00 05 04 43.9 +19 01 11 2.46113 2.833 18.7
2002 2 25 00 00 00 05 05 25.3 +19 05 16 2.48049 2.839 18.8
2002 2 26 00 00 00 05 06 07.8 +19 09 19 2.49989 2.845 18.8
2002 2 27 00 00 00 05 06 51.2 +19 13 20 2.51933 2.851 18.8
2002 2 28 00 00 00 05 07 35.6 +19 17 19 2.53881 2.857 18.9
2002 3 1 00 00 00 05 08 21.0 +19 21 16 2.55833 2.863 18.9
2002 3 2 00 00 00 05 09 07.4 +19 25 11 2.57789 2.869 18.9
2002 3 3 00 00 00 05 09 54.6 +19 29 04 2.59748 2.875 19.0
2002 3 4 00 00 00 05 10 42.8 +19 32 55 2.61710 2.881 19.0
2002 3 5 00 00 00 05 11 31.9 +19 36 43 2.63674 2.887 19.0
51P/Harrington-D
OBSERVATORY: 349 139.5492 0.81036 +0.58397 Ageo [Kadota]
Date Time (UT) R. A. (2000) Decl. Delta R Mag.
Year Mo. D. h m s h m s ｡ , " AU AU V
2002 1 25 00 00 00 04 53 45.3 +16 48 40 1.91843 2.651 17.8
2002 1 26 00 00 00 04 53 46.1 +16 53 15 1.93483 2.657 17.8
2002 1 27 00 00 00 04 53 48.6 +16 57 50 1.95138 2.663 17.8
2002 1 28 00 00 00 04 53 52.7 +17 02 25 1.96807 2.669 17.9
2002 1 29 00 00 00 04 53 58.3 +17 06 59 1.98491 2.676 17.9
2002 1 30 00 00 00 04 54 05.6 +17 11 33 2.00188 2.682 17.9
2002 1 31 00 00 00 04 54 14.4 +17 16 07 2.01900 2.688 18.0
2002 2 1 00 00 00 04 54 24.7 +17 20 40 2.03624 2.694 18.0
2002 2 2 00 00 00 04 54 36.6 +17 25 13 2.05361 2.700 18.0
2002 2 3 00 00 00 04 54 49.9 +17 29 45 2.07111 2.706 18.1
2002 2 4 00 00 00 04 55 04.8 +17 34 17 2.08874 2.712 18.1
2002 2 5 00 00 00 04 55 21.1 +17 38 48 2.10648 2.718 18.1
2002 2 6 00 00 00 04 55 38.8 +17 43 18 2.12433 2.724 18.2
2002 2 7 00 00 00 04 55 58.0 +17 47 48 2.14230 2.730 18.2
2002 2 8 00 00 00 04 56 18.6 +17 52 16 2.16037 2.736 18.2
2002 2 9 00 00 00 04 56 40.5 +17 56 44 2.17855 2.743 18.3
2002 2 10 00 00 00 04 57 03.9 +18 01 10 2.19683 2.749 18.3
2002 2 11 00 00 00 04 57 28.6 +18 05 36 2.21521 2.755 18.3
2002 2 12 00 00 00 04 57 54.6 +18 10 01 2.23368 2.761 18.4
2002 2 13 00 00 00 04 58 22.0 +18 14 24 2.25224 2.767 18.4
2002 2 14 00 00 00 04 58 50.6 +18 18 46 2.27088 2.773 18.4
2002 2 15 00 00 00 04 59 20.5 +18 23 07 2.28961 2.779 18.5
2002 2 16 00 00 00 04 59 51.6 +18 27 27 2.30842 2.785 18.5
2002 2 17 00 00 00 05 00 24.0 +18 31 45 2.32730 2.791 18.5
2002 2 18 00 00 00 05 00 57.6 +18 36 02 2.34625 2.797 18.6
2002 2 19 00 00 00 05 01 32.4 +18 40 17 2.36527 2.803 18.6
2002 2 20 00 00 00 05 02 08.3 +18 44 31 2.38435 2.809 18.6
2002 2 21 00 00 00 05 02 45.4 +18 48 43 2.40350 2.815 18.6
2002 2 22 00 00 00 05 03 23.5 +18 52 53 2.42270 2.821 18.7
2002 2 23 00 00 00 05 04 02.8 +18 57 02 2.44195 2.827 18.7
2002 2 24 00 00 00 05 04 43.2 +19 01 09 2.46126 2.833 18.7
2002 2 25 00 00 00 05 05 24.6 +19 05 14 2.48062 2.839 18.8
2002 2 26 00 00 00 05 06 07.0 +19 09 17 2.50002 2.845 18.8
2002 2 27 00 00 00 05 06 50.4 +19 13 18 2.51946 2.851 18.8
2002 2 28 00 00 00 05 07 34.8 +19 17 17 2.53894 2.857 18.9
2002 3 1 00 00 00 05 08 20.2 +19 21 14 2.55846 2.863 18.9
2002 3 2 00 00 00 05 09 06.6 +19 25 09 2.57802 2.869 18.9
2002 3 3 00 00 00 05 09 53.8 +19 29 02 2.59761 2.875 19.0
2002 3 4 00 00 00 05 10 42.0 +19 32 52 2.61723 2.881 19.0
2002 3 5 00 00 00 05 11 31.1 +19 36 41 2.63687 2.887 19.0
NAKANO
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write mail from CFAD0::NAKANO on 2002-01-28 00:54:17(JST).
51P/Harrington
Epoch 2001 June 20.0 TT = JDT 2452080.5
T 2001 June 5.74447 TT Nakano
q 1.5681301 (2000.0) P Q
n 0.14555272 Peri. 233.60156 +0.98407039 +0.11974723
a 3.5792264 Node 119.18024 -0.07119470 +0.94271155
e 0.5618802 Incl. 8.65592 -0.16290113 +0.31137683
P 6.77
From 172 observations 1994-2001, mean residual 0.90. Nongravitational
parameters A1 = +1.58 +/- 0.07, A2 = +1.0132 +/- 0.0901.
NAKANO
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(C) Copyright 2001 OAA/ComputingSection
write mail from CFAD0::NAKANO on 2001-11-27 01:14:55(JST).
51P/Harrington
Epoch 2001 June 20.0 TT = JDT 2452080.5
T 2001 June 5.75358 TT Nakano
q 1.5681193 (2000.0) P Q
n 0.14558144 Peri. 233.60580 +0.98407972 +0.11966669
a 3.5787557 Node 119.18067 -0.07111700 +0.94271853
e 0.5618255 Incl. 8.65619 -0.16287869 +0.31138666
P 6.77
From 171 observations 1987-2001, mean residual 0".87. Nongravitational
parameters A1 = +0.65 +/- 0.05, A2 = -0.0871 +/- 0.0003.
NAKANO
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write mail from CFAD0::NAKANO on 2001-07-31 23:54:42(JST).
◎51Pの軌道と予報位置です
上尾の門田健一氏は，この彗星の今期初めての観測を７月１日に行ない，
同４日にこれを確認しました．氏による CCD全光度は，それぞれ，15.1等，
14.9等でした．彗星は，コマが 20"ほどで，中央集光のある拡散状，西南
西の方向に1'〜2'の淡い尾が見られるとのことです．
なお，彗星は，1994年に分列核Ａ，Ｂ，Ｃ核が観測されています．氏の
観測は，Ａ核のようです．彗星の位置は，NK678 の予報軌道から赤経方向
に +194"，赤緯方向に+63"ほど離れていました．近日点通過への補正値は，
ΔＴ=-0.14日でした．予報では，Ｃ核は，Ａ核からΔＴ=+0.86日の位置に
います．
なお，1994年に報告された次のＣ核の観測は，Ａ核のものです．
0051P c C1994 10 14.73125 02 17 17.05 -08 34 54.8 12.8 T 24135360
0051P c C1994 10 14.73750 02 17 16.87 -08 34 55.2 24135360
0051P c C1994 10 30.53142 02 09 57.16 -08 07 21.5 13.3 T 24135360
0051P c C1994 10 30.53507 02 09 57.01 -08 07 20.7 24135360
0051P c C1994 11 04.56790 02 07 46.99 -07 40 01.5 14.4 T 24135410
0051P c C1994 11 04.57015 02 07 46.94 -07 40 00.0 24135410
0051P c C1994 11 07.30432 02 06 45.61 -07 21 43.6 24135691
0051P c C1994 11 07.35868 02 06 44.30 -07 21 20.1 24135691
0051P c C1994 11 08.18845 02 06 27.75 -07 15 19.9 24254801
0051P c C1994 11 08.20869 02 06 27.29 -07 15 09.5 24254801
0051P c C1994 11 08.63299 02 06 19.00 -07 11 59.7 13.7 T 24254360
0051P c C1994 11 08.63576 02 06 18.93 -07 11 58.5 24254360
0051P c C1994 11 09.27740 02 06 06.85 -07 07 05.7 18.3 N 24135691
0051P c C1994 11 09.29428 02 06 06.49 -07 06 57.9 13.8 T 24135691
0051P c C1994 11 09.33152 02 06 05.66 -07 06 40.7 14.1 T 24135691
0051P c C1994 11 23.47905 02 04 06.72 -04 52 53.9 14.5 T 24254410
0051P c C1994 11 23.48145 02 04 06.62 -04 52 52.6 24254410
0051P c C1994 11 23.50990 02 04 06.66 -04 52 34.6 14.4 T 24254360
0051P c C1994 11 23.51337 02 04 06.63 -04 52 33.0 24254360
0051P c C1994 11 26.52082 02 04 20.74 -04 19 01.1 15.2 T 24254410
0051P c C1994 11 26.52361 02 04 20.79 -04 18 59.3 24254410
0051P c C1994 11 26.52638 02 04 20.81 -04 18 58.0 24254410
0051P c C1994 12 04.52467 02 06 08.50 -02 44 05.3 15.5 T 24254410
0051P c C1994 12 04.52755 02 06 08.51 -02 44 04.3 24254410
0051P c C1994 12 04.53043 02 06 08.53 -02 44 02.4 24254410
51P/Harrington
Epoch 2001 June 20.0 TT = JDT 2452080.5
T 2001 June 5.75205 TT Nakano
q 1.5681195 (2000.0) P Q
n 0.14558162 Peri. 233.60567 +0.98407936 +0.11966956
a 3.5787526 Node 119.18064 -0.07111970 +0.94271833
e 0.5618251 Incl. 8.65620 -0.16287974 +0.31138617
P 6.77
From 168 observations 1987-2001, mean residual 0".86. Nongravitational
parameters A1 = +0.66 +/- 0.05, A2 = -0.0883 +/- 0.0003.
18h TT R.A.(2000) Decl. Delta r Mot./PA Elong. Mag. Astronomical
h m ｡ , , ｡ ｡ m1 Twilight
July 1 02 46.48 +08 50.2 1.870 1.591 40.9/ 77 58.3 14.4 +15.9 270.4
2 02 49.17 +08 59.6 1.866 1.592 40.8/ 77 58.5 14.4 +16.4 270.6
3 02 51.85 +09 08.8 1.862 1.594 40.6/ 77 58.8 14.4 +16.9 270.7
4 02 54.52 +09 17.9 1.859 1.596 40.4/ 77 59.1 14.4 +17.3 270.9
5 02 57.18 +09 26.9 1.855 1.598 40.2/ 77 59.4 14.4 +17.8 271.0
6 02 59.84 +09 35.7 1.852 1.600 40.0/ 78 59.6 14.5 +18.3 271.2
7 03 02.48 +09 44.3 1.848 1.602 39.9/ 78 59.9 14.5 +18.8 271.4
8 03 05.12 +09 52.7 1.845 1.604 39.7/ 78 60.2 14.5 +19.3 271.5
9 03 07.74 +10 01.0 1.841 1.606 39.5/ 78 60.5 14.5 +19.8 271.7
10 03 10.36 +10 09.2 1.838 1.609 39.3/ 78 60.8 14.5 +20.4 271.9
11 03 12.96 +10 17.1 1.834 1.611 39.1/ 78 61.1 14.5 +20.9 272.1
12 03 15.56 +10 24.9 1.831 1.613 38.9/ 79 61.4 14.5 +21.4 272.4
13 03 18.14 +10 32.6 1.827 1.616 38.7/ 79 61.7 14.6 +21.9 272.6
14 03 20.72 +10 40.0 1.824 1.618 38.5/ 79 62.0 14.6 +22.5 272.8
15 03 23.28 +10 47.3 1.820 1.621 38.3/ 79 62.3 14.6 +23.0 273.0
16 03 25.83 +10 54.5 1.817 1.623 38.1/ 79 62.6 14.6 +23.6 273.3
17 03 28.37 +11 01.4 1.813 1.626 37.8/ 80 62.9 14.6 +24.1 273.5
18 03 30.90 +11 08.2 1.810 1.629 37.6/ 80 63.3 14.6 +24.7 273.8
19 03 33.42 +11 14.9 1.806 1.631 37.4/ 80 63.6 14.7 +25.2 274.1
20 03 35.92 +11 21.3 1.803 1.634 37.2/ 80 63.9 14.7 +25.8 274.4
21 03 38.41 +11 27.7 1.799 1.637 36.9/ 80 64.2 14.7 +26.3 274.6
22 03 40.89 +11 33.8 1.796 1.640 36.7/ 81 64.6 14.7 +26.9 274.9
23 03 43.35 +11 39.8 1.792 1.643 36.5/ 81 64.9 14.7 +27.5 275.2
24 03 45.80 +11 45.6 1.789 1.646 36.2/ 81 65.2 14.8 +28.1 275.5
25 03 48.24 +11 51.2 1.785 1.649 36.0/ 81 65.6 14.8 +28.6 275.9
26 03 50.66 +11 56.7 1.782 1.652 35.7/ 81 65.9 14.8 +29.2 276.2
27 03 53.07 +12 02.0 1.778 1.656 35.5/ 82 66.3 14.8 +29.8 276.5
28 03 55.47 +12 07.1 1.774 1.659 35.2/ 82 66.7 14.8 +30.4 276.9
29 03 57.85 +12 12.1 1.771 1.662 35.0/ 82 67.0 14.9 +31.0 277.2
30 04 00.21 +12 16.9 1.767 1.665 34.7/ 82 67.4 14.9 +31.6 277.6
31 04 02.56 +12 21.6 1.764 1.669 34.5/ 82 67.7 14.9 +32.2 277.9
Aug. 1 04 04.89 +12 26.1 1.760 1.672 34.2/ 83 68.1 14.9 +32.8 278.3
2 04 07.21 +12 30.5 1.756 1.676 34.0/ 83 68.5 14.9 +33.4 278.7
3 04 09.51 +12 34.7 1.753 1.679 33.7/ 83 68.9 15.0 +34.0 279.1
4 04 11.80 +12 38.7 1.749 1.683 33.4/ 83 69.3 15.0 +34.6 279.5
5 04 14.07 +12 42.6 1.745 1.687 33.2/ 83 69.7 15.0 +35.2 279.9
6 04 16.32 +12 46.4 1.741 1.690 32.9/ 84 70.1 15.0 +35.8 280.3
7 04 18.56 +12 50.0 1.738 1.694 32.6/ 84 70.5 15.1 +36.4 280.7
8 04 20.78 +12 53.4 1.734 1.698 32.4/ 84 70.9 15.1 +37.0 281.2
9 04 22.98 +12 56.7 1.730 1.702 32.1/ 84 71.3 15.1 +37.6 281.6
10 04 25.16 +12 59.8 1.726 1.705 31.8/ 85 71.7 15.1 +38.2 282.1
11 04 27.33 +13 02.8 1.722 1.709 31.5/ 85 72.1 15.2 +38.8 282.6
12 04 29.48 +13 05.7 1.719 1.713 31.2/ 85 72.5 15.2 +39.4 283.0
13 04 31.61 +13 08.4 1.715 1.717 30.9/ 85 73.0 15.2 +40.0 283.5
14 04 33.72 +13 11.0 1.711 1.721 30.6/ 85 73.4 15.2 +40.6 284.0
15 04 35.81 +13 13.4 1.707 1.725 30.3/ 86 73.9 15.3 +41.2 284.6
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戻ります。