C/2007 D1 (LINEAR)
Epoch 2007 June 29.0 TT = JDT 2454280.5
T 2007 June 19.46085 TT Nakano
q 8.7936765 (2000.0) P Q
z -0.0002143 Peri. 340.15924 -0.88994623 -0.44441387
+/-0.0000021 Node 171.09852 +0.45350418 -0.83856989
e 1.0018846 Incl. 41.45031 -0.04826666 +0.31511403
From 375 observations 2007 Feb. 17-2009 May 2, mean residual 0".63.
(1/a)org.= +0.000038, (1/a)fut.= +0.000733 (+/-0.000002), Q= 8.
The comet has passed 1.88 AU from Saturn on 2008 July 28 UT.
Residuals in seconds of arc
2007/ 070313 D88 0.6- 0.1+ 080328 704 0.7+ 1.2+
070217 704 1.8+ 1.9- 070314 415 0.5+ 0.0 080328 704 0.6+ 0.8+
070217 704 1.8+ 1.9+ 070314 415 0.1+ 0.1- 080328 704 0.4+ 0.8+
070217 704 (2.0+ 1.5+) 070314 A77 0.4- 0.3- 080330 J70 (8.0+ 2.2-)
070217 704 (1.5+ 2.0+) 070314 A77 (0.8+ 2.9+) 080330 J70 1.6- 0.7-
070217 246 0.5+ 0.3+ 070314 A77 0.7+ 0.9+ 080330 J70 (3.0- 0.0 )
070217 246 0.2+ 0.1- 070316 246 0.1- 0.5+ 080401 B49 0.0 0.8+
070217 246 0.1+ 0.7+ 070316 246 0.1+ 0.9+ 080403 691 1.3- 0.5-
070217 246 0.4+ 0.2+ 070316 246 0.1- 0.5+ 080403 691 1.4- 0.6-
070217 246 0.3+ 0.4+ 070316 246 0.1+ 0.4+ 080403 691 1.5- 0.3-
070217 246 0.7+ 0.5+ 070316 246 0.3+ 0.1+ 080403 204 0.7+ 0.0
070217 246 0.8+ 0.5+ 070316 246 0.2- 0.1+ 080404 204 0.7+ 0.2+
070217 246 0.8+ 0.5+ 070316 246 0.5+ 0.3+ 080404 900 0.8+ 1.8+
070217 473 (2.3- 1.1+) 070317 349 0.8- 0.5- 080404 900 1.4+ 0.1-
070217 473 1.9- 0.8+ 070317 349 0.7- 0.6- 080405 691 1.5- 0.3-
070218 673 0.9+ 0.1- 070317 349 1.0- 0.4- 080405 691 1.4- 0.3-
070218 673 1.3+ 0.1+ 070317 157 0.7+ 0.1- 080405 691 1.3- 0.1+
070218 673 1.3+ 0.0 070317 232 1.3- 1.3- 080410 467 0.2- 0.0
070218 703 0.6- 1.3- 070317 232 1.3- 0.5- 080410 467 0.1+ 0.2+
070218 703 (2.7- 1.8-) 070317 232 0.5- 0.7+ 080410 467 0.3+ 0.2-
070218 703 (2.4- 0.0 ) 070318 213 0.0 0.2+ 080410 467 0.0 0.5-
070218 734 0.4+ 0.3- 070318 213 0.1+ 0.1+ 080430 A77 0.2- 0.3-
070218 734 0.2- 0.3+ 070318 213 0.1- 0.1+ 080501 132 0.5- 0.4-
070218 734 0.2- 0.2+ 070322 415 0.5+ 0.1- 080501 132 0.4- 0.3+
070218 734 0.0 0.3+ 070322 415 0.4+ 0.4- 080501 132 0.4- 0.3-
070218 734 0.2+ 0.1+ 070322 J70 (0.3+ 2.1+) 080503 215 0.4- 0.1-
070218 682 0.4- 1.0+ 070322 J70 0.5+ 1.6+ 080503 215 0.5- 0.1-
070218 711 0.4+ 0.0 070324 585 (3.3+ 0.2+) 080503 215 0.4- 0.1-
070218 704 0.6+ 0.9- 070325 372 0.4+ 1.0- 080529 B37 1.2+ 0.8+
070218 711 0.5+ 0.3+ 070325 372 0.7+ 0.9- 080529 B37 1.0+ 0.8+
070218 711 0.4+ 0.2+ 070405 585 0.3+ 0.4- 080529 B37 1.3+ 0.7+
070218 704 1.9+ 0.1+ 070405 585 0.1+ 0.1- 081224 132 0.3+ 0.7+
070218 704 0.7+ 1.2+ 070406 B30 0.8- 0.9- 081224 132 0.2- 0.0
070218 704 0.2+ 0.5+ 070406 213 0.2+ 0.5- 081224 132 0.1+ 0.5+
070218 704 (1.3- 2.4+) 070406 B30 1.0- 1.0- 081230 461 0.4+ 0.3+
070218 682 0.6- 0.7+ 070406 213 0.2+ 0.3- 081230 461 0.1+ 0.4+
070218 474 0.6+ 0.2+ 070406 B30 0.4+ 1.3- 081230 461 0.2+ 0.4+
070218 474 0.4+ 0.1- 070406 213 0.1+ 0.3- 2009/
070218 473 0.0 0.8+ 070407 415 0.4+ 0.1+ 090111 204 0.7- 0.2-
070218 473 1.0- 0.1+ 070407 415 1.0+ 0.6+ 090111 204 0.0 0.1-
070218 473 0.2- 0.4- 070409 215 0.3- 0.7+ 090125 349 0.1+ 0.0
070218 246 0.2+ 0.5+ 070411 415 0.2+ 0.3+ 090125 349 0.1- 0.1+
070218 246 0.2+ 0.6+ 070411 415 0.2+ 0.3+ 090125 349 0.0 0.2+
070218 246 0.5+ 0.5+ 070415 415 0.6+ 0.5+ 090128 H10 0.4- 0.3-
070218 246 0.4+ 0.9+ 070415 415 0.6+ 0.3- 090128 H10 0.1+ 0.1-
070218 246 0.2+ 0.5+ 070420 A79 0.9- 0.3- 090128 H10 0.1+ 0.1-
070218 113 0.6- 0.1+ 070420 A79 0.9+ 0.7- 090205 H10 0.1+ 0.6+
070218 113 1.5- 0.4- 070420 585 0.9+ 0.3- 090205 H10 0.3+ 0.4-
070219 734 1.8- 0.1- 070420 A79 0.6- 1.5- 090205 H10 0.5+ 0.3-
070219 734 0.0 0.8- 070420 585 (0.4- 2.7+) 090206 900 0.3- 0.2-
070219 734 0.4- 0.1+ 070423 213 0.0 0.2+ 090206 900 0.4- 0.3-
070219 734 1.2- 0.5+ 070423 213 0.1+ 0.2+ 090208 J24 0.4- 0.2-
070219 703 1.3- 0.7+ 070423 213 0.1- 0.2+ 090208 J24 0.3- 0.4+
070219 703 1.5- 0.2+ 070423 170 0.6- 0.7+ 090208 J24 0.3- 0.4+
070219 703 1.9- 0.4+ 070423 170 0.8- 0.6+ 090216 B33 0.1- 0.3-
070219 300 0.4+ 0.4+ 070504 585 0.3- 0.7+ 090216 B33 0.1- 0.2+
070219 300 0.5+ 0.3- 070504 585 0.5+ 0.0 090219 H45 0.6+ 0.2+
070219 300 0.2+ 0.7- 070504 585 0.4+ 0.2- 090219 H45 0.2+ 0.2+
070219 300 0.4+ 0.3+ 070504 585 0.4+ 0.2+ 090219 H45 0.5+ 0.2-
070219 D35 0.3+ 0.2+ 070504 585 0.1+ 0.7+ 090219 H45 0.4+ 0.0
070219 D35 0.0 0.1+ 070507 J70 (1.3- 7.1+) 090219 H45 0.2+ 0.1+
070219 D35 0.1+ 0.4+ 070508 J70 (1.6+ 3.2-) 090219 H45 0.2- 0.2+
070220 204 0.2- 0.1+ 070508 J70 (3.4+ 2.1-) 090221 900 0.6- 1.3-
070220 204 0.4+ 0.4- 070510 473 1.1- 0.1+ 090221 900 0.6+ 1.9-
070221 372 (4.0- 0.5-) 070511 415 0.5+ 0.4+ 090222 691 0.6- 0.1-
070221 349 0.2+ 0.2- 070511 415 0.4+ 0.2+ 090222 691 0.3+ 0.1+
070221 372 0.1- 0.0 070512 415 0.8- 0.2+ 090222 691 0.1- 0.3+
070221 349 0.2+ 0.0 070512 415 0.3+ 0.6- 090223 H36 0.9- 0.4-
070221 246 0.3+ 0.5- 070516 673 0.0 0.1- 090223 H36 0.9- 0.4-
070221 246 0.1+ 0.5- 070516 673 0.2- 0.3+ 090223 H36 0.9- 0.3-
070221 246 0.3+ 0.4- 070516 673 0.1+ 0.2+ 090223 H36 1.0- 0.2-
070222 850 0.3- 0.2+ 070516 673 0.2+ 0.5+ 090226 212 0.6- 0.1-
070222 850 0.4- 0.3+ 070526 415 0.7+ 0.2- 090226 212 0.2- 0.3+
070222 850 0.1+ 0.2+ 070606 415 0.0 0.5- 090226 691 (2.4- 0.5-)
070222 213 0.1+ 0.3- 070622 415 0.2- 1.2+ 090226 691 (2.5- 0.3-)
070222 213 0.5+ 0.1+ 070622 415 0.5+ 0.5+ 090226 691 (2.2- 0.5-)
070222 213 0.8+ 0.2- 070623 415 1.5+ 1.1- 090305 H10 0.3- 0.1-
070223 850 0.3- 0.5+ 070623 415 0.3+ 0.7- 090314 900 0.5- 0.0
070223 850 0.4- 0.4+ 071117 349 0.0 0.9- 090314 900 0.1- 0.2-
070223 850 0.5- 0.0 071117 349 0.5+ 1.2- 090317 349 0.1- 0.0
070223 D88 0.0 0.7+ 071118 349 0.3+ 0.4- 090317 349 0.2- 0.1-
070223 D88 0.0 0.4+ 071118 349 0.1+ 0.5- 090318 H10 0.2- 0.2-
070223 D88 0.6- 0.0 071214 349 1.4+ 0.4- 090318 H10 0.1+ 0.0
070224 372 0.1- 0.2- 071215 349 0.5+ 0.1+ 090318 H10 0.4+ 0.8-
070224 372 0.2+ 0.1+ 071215 349 0.8+ 0.1+ 090318 900 0.3- 0.1+
070224 300 0.8+ 0.8- 071231 415 0.2+ 0.2- 090318 900 0.4- 0.1-
070224 300 0.4+ 0.3- 071231 415 1.3+ 0.0 090319 704 (2.0+ 0.6+)
070224 300 0.5+ 0.6- 2008/ 090319 704 (3.2+ 1.2+)
070224 349 0.1+ 0.1+ 080105 900 (3.1- 3.4-) 090319 704 0.9+ 1.5+
070224 349 0.1- 0.2+ 080105 900 (3.1- 0.9-) 090319 704 0.1+ 0.5+
070226 349 0.7+ 0.2+ 080202 J36 0.2- 0.1+ 090320 H45 0.5+ 0.4+
070226 349 0.7+ 0.2+ 080202 J36 0.2- 0.3- 090320 H45 0.5+ 0.3+
070227 850 0.7- 0.5+ 080202 J36 0.5- 0.2- 090320 H45 0.3+ 0.2+
070227 850 0.1+ 0.6- 080210 204 0.0 0.2+ 090320 H45 0.8+ 0.6+
070227 J70 (0.6- 3.5-) 080210 J96 0.8+ 0.6+ 090320 H45 1.4+ 0.1+
070227 J70 1.9+ 0.8- 080210 J96 1.0+ 0.2+ 090320 B70 1.5- 1.1-
070302 J70 0.8+ 0.5- 080210 204 0.1+ 0.1+ 090321 B70 (2.5- 1.0-)
070302 J70 (0.2- 3.8+) 080210 J96 0.6+ 0.3+ 090321 204 0.2+ 0.0
070303 232 0.8+ 1.6- 080214 355 0.5- 0.0 090322 204 0.1- 0.1-
070303 232 0.7- 0.4+ 080214 355 0.4- 0.2+ 090322 D29 1.2- 0.4+
070303 232 1.3- 1.0+ 080214 355 0.0 0.3- 090322 D29 0.2- 0.1-
070307 355 1.2- 0.0 080216 349 0.1+ 0.5- 090322 D29 1.5- 0.6-
070307 355 1.7- 0.1+ 080216 349 0.0 0.7- 090322 D29 1.8- 0.7-
070307 355 1.4- 0.6- 080226 704 1.6+ 0.3- 090325 D29 1.2- 0.5-
070307 349 0.6- 1.6- 080226 704 (2.2+ 0.8+) 090325 D29 (2.0- 0.9-)
070307 349 0.5- 1.5- 080226 704 1.1- 0.8+ 090325 D29 1.4- 1.0-
070308 850 (1.9+ 2.3-) 080226 704 0.4- 1.7+ 090325 D29 1.4- 0.8-
070308 850 0.7+ 0.9- 080229 D88 0.0 0.1- 090401 H45 0.8+ 0.4+
070308 850 0.7- 0.8- 080229 D88 0.2- 0.5+ 090401 H45 0.8+ 0.1+
070308 850 1.1- 0.8+ 080229 D88 0.6- 0.1+ 090401 H45 0.6+ 0.2-
070308 850 1.3- 0.4+ 080301 D29 1.3- 0.3+ 090401 H45 0.3- 0.0
070309 372 0.2+ 1.0+ 080301 D29 0.8- 1.0- 090401 H45 0.2+ 0.5-
070309 372 1.0- 0.8+ 080301 D29 1.3- 0.2- 090401 H45 0.7+ 0.6+
070309 B30 (6.0- 7.2-) 080301 D29 0.9- 0.1- 090416 461 0.7+ 0.3+
070309 B30 (6.3- 7.0-) 080302 704 (2.2+ 1.2-) 090416 461 1.0+ 0.2+
070310 130 0.5- 0.4- 080302 704 (2.9+ 2.3+) 090416 461 0.8+ 0.5+
070310 130 0.4- 0.7+ 080302 704 (2.6+ 2.7+) 090417 461 0.7+ 0.4+
070310 130 0.3+ 0.2+ 080302 704 (0.8- 3.0+) 090417 461 0.7+ 0.2+
070310 130 0.1+ 0.9- 080308 400 0.1- 0.2+ 090417 461 0.6+ 0.0
070310 232 0.1- 0.6- 080308 400 0.4- 0.3+ 090419 461 0.8+ 0.4+
070310 232 0.1- 1.7- 080308 400 0.1+ 0.2+ 090419 461 0.6+ 0.4+
070310 232 0.6+ 1.5- 080308 J51 0.1- 0.2- 090419 461 0.9+ 0.3+
070311 372 0.1- 0.4- 080308 J51 0.5- 0.2- 090421 204 0.1+ 0.3-
070311 349 0.0 0.2- 080308 J51 0.5- 0.1- 090422 204 0.0 0.5+
070311 349 0.2+ 0.2- 080310 704 1.2+ 0.9- 090423 J47 0.1- 0.2+
070311 349 0.3+ 0.4- 080310 704 0.8+ 0.9- 090423 J47 0.3+ 0.2-
070311 A32 0.4- 1.1+ 080310 704 0.5+ 0.5- 090423 J47 0.5+ 0.7+
070311 A32 0.8- 0.4- 080310 704 1.6+ 0.2- 090424 400 0.6+ 0.0
070311 A32 1.1- 0.7- 080310 704 (3.4+ 1.2+) 090424 400 0.5+ 0.2+
070312 850 0.0 0.3+ 080313 B49 (2.8+ 3.7-) 090424 400 0.6+ 0.2+
070312 850 0.1+ 0.1+ 080316 415 0.6+ 0.4+ 090427 H10 0.4+ 0.3-
070312 850 0.1+ 0.1- 080316 415 0.6+ 0.5- 090427 H10 0.8+ 0.3-
070312 850 0.2+ 0.1+ 080317 900 0.5+ 0.7- 090427 900 1.0- 0.1-
070312 372 0.3- 0.4- 080317 900 0.8- 0.5+ 090427 900 1.2- 0.4+
070312 215 0.0 0.1+ 080325 104 1.0- 1.1+ 090502 J36 0.4+ 0.2-
070312 215 0.1- 0.1- 080325 104 0.5+ 0.4+ 090502 J36 0.3+ 0.5-
070312 215 0.1+ 0.2- 080325 104 0.2+ 0.6+ 090502 J36 0.1- 0.2-
070313 D88 0.4- 0.4+ 080328 704 0.5- 1.0-
070313 D88 0.8- 0.5+ 080328 704 0.3+ 0.0
NAKANO
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write mail from CFAD0::NAKANO on 2009-05-12 03:07:22(JST).
C/2007 D1 (LINEAR)
Epoch 2007 June 29.0 TT = JDT 2454280.5
T 2007 June 19.49612 TT Nakano
q 8.7936390 (2000.0) P Q
z -0.0002100 Peri. 340.16112 -0.88996077 -0.44438475
+/-0.0000027 Node 171.09852 +0.45347673 -0.83858473
e 1.0018470 Incl. 41.45031 -0.04825637 +0.31511560
From 277 observations 2007 Feb. 17-2008 May 29, mean residual 0".66.
(1/a)org.= +0.000042, (1/a)fut.= +0.000737 (+/-0.000003), Q= 7.
The comet has passed 1.88 AU from Saturn on 2008 July 28 UT.
NAKANO
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(C) Copyright 2009 OAA/ComputingSection
write mail from CFAD0::NAKANO on 2009-01-06 06:55:26(JST).
C/2007 D1 (LINEAR)
Epoch 2007 June 29.0 TT = JDT 2454280.5
T 2007 June 19.46080 TT Nakano
q 8.7936334 (2000.0) P Q
z -0.0002101 Peri. 340.15925 -0.88994628 -0.44441380
+/-0.0000033 Node 171.09853 +0.45350409 -0.83857004
e 1.0018474 Incl. 41.45029 -0.04826658 +0.31511373
From 241 observations 2007 Feb. 17-2008 Mar. 17, mean residual 0".65.
(1/a)org.= +0.000042, (1/a)fut.= +0.000737 (+/-0.000003), Q= 7.
NAKANO
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(C) Copyright 2008 OAA/ComputingSection
write mail from CFAD0::NAKANO on 2008-03-30 06:44:05(JST).
C/2007 D1 (LINEAR)
Epoch 2007 June 29.0 TT = JDT 2454280.5
T 2007 June 19.33887 TT Nakano
q 8.7936067 (2000.0) P Q
z -0.0002090 Peri. 340.15227 -0.88989629 -0.44451613
+/-0.0000044 Node 171.09921 +0.45359821 -0.83852446
e 1.0018376 Incl. 41.44932 -0.04830376 +0.31509069
From 201 observations 2007 Feb. 17-Nov. 18, mean residual 0".64.
(1/a)org.= +0.000043, (1/a)fut.= +0.000738 (+/-0.000004), Q= 7.
NAKANO
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(C) Copyright 2007 OAA/ComputingSection
write mail from CFAD0::NAKANO on 2007-11-30 09:05:11(JST).
◎C/2007 D1の軌道と予報位置
上尾の門田健一氏は，６月23日の観測以来，途絶えていたこの彗星の観測に
11月17日と18日に成功しました．氏のCCD全光度は，それぞれ，17.9等と17.8等
でした．
C/2007 D1 (LINEAR)
Epoch 2007 June 29.0 TT = JDT 2454280.5
T 2007 June 19.33887 TT Nakano
q 8.7936067 (2000.0) P Q
z -0.0002090 Peri. 340.15227 -0.88989629 -0.44451613
+/-0.0000044 Node 171.09921 +0.45359821 -0.83852446
e 1.0018376 Incl. 41.44932 -0.04830376 +0.31509069
From 201 observations 2007 Feb. 17-Nov. 18, mean residual 0".64.
(1/a)org.= +0.000043, (1/a)fut.= +0.000738 (+/-0.000004), Q= 7.
Date/ TT R.A.(2000) Decl. Delta r Daily motion Mag. Moon Age
h h m ｡ , , / PA ｡ m1 ｡
2007 Nov. 25 20 11 07.25 -02 16.9 9.056 8.842 4.1 / 95 17.9 89 .98
26 20 11 07.53 -02 17.3 9.040 8.843 4.0 / 95 17.9 74 .93
27 20 11 07.80 -02 17.7 9.025 8.843 4.0 / 95 17.9 60 .86
28 20 11 08.06 -02 18.0 9.009 8.844 3.9 / 94 17.9 46 .77
29 20 11 08.32 -02 18.3 8.994 8.845 3.8 / 94 17.9 33 .67
30 20 11 08.57 -02 18.5 8.978 8.845 3.7 / 93 17.9 20 .57
Dec. 1 20 11 08.81 -02 18.7 8.962 8.846 3.6 / 92 17.9 9 .47
2 20 11 09.05 -02 18.9 8.947 8.847 3.5 / 92 17.9 8 .37
3 20 11 09.28 -02 19.0 8.931 8.847 3.4 / 91 17.9 18 .28
4 20 11 09.51 -02 19.0 8.915 8.848 3.3 / 90 17.9 29 .20
5 20 11 09.73 -02 19.0 8.899 8.848 3.2 / 90 17.8 41 .13
6 20 11 09.94 -02 19.0 8.883 8.849 3.1 / 89 17.8 53 .08
7 20 11 10.14 -02 19.0 8.867 8.850 3.0 / 88 17.8 64 .03
8 20 11 10.34 -02 18.8 8.851 8.850 2.9 / 87 17.8 76 .01
9 20 11 10.54 -02 18.7 8.835 8.851 2.8 / 86 17.8 88 .00
10 20 11 10.72 -02 18.5 8.819 8.852 2.7 / 85 17.8 100 .01
11 20 11 10.90 -02 18.2 8.803 8.852 2.6 / 83 17.8 112 .04
12 20 11 11.08 -02 17.9 8.787 8.853 2.5 / 82 17.8 125 .09
13 20 11 11.24 -02 17.6 8.771 8.854 2.4 / 80 17.8 137 .16
14 20 11 11.40 -02 17.2 8.755 8.854 2.3 / 79 17.8 150 .24
15 20 11 11.56 -02 16.7 8.739 8.855 2.2 / 77 17.8 162 .33
16 20 11 11.70 -02 16.2 8.723 8.856 2.2 / 75 17.8 174 .43
17 20 11 11.84 -02 15.7 8.707 8.856 2.1 / 73 17.8 169 .54
18 20 11 11.97 -02 15.1 8.691 8.857 2.0 / 71 17.8 155 .66
19 20 11 12.10 -02 14.4 8.675 8.858 1.9 / 68 17.8 141 .76
20 20 11 12.22 -02 13.7 8.660 8.859 1.8 / 66 17.8 127 .85
21 20 11 12.33 -02 13.0 8.644 8.859 1.8 / 63 17.8 112 .93
22 20 11 12.43 -02 12.1 8.628 8.860 1.7 / 60 17.8 97 .98
23 20 11 12.53 -02 11.3 8.612 8.861 1.6 / 56 17.8 82 1.00
24 20 11 12.62 -02 10.4 8.597 8.861 1.6 / 53 17.8 68 .99
25 20 11 12.71 -02 09.4 8.581 8.862 1.5 / 49 17.8 53 .96
26 20 11 12.79 -02 08.4 8.566 8.863 1.5 / 45 17.8 39 .90
27 20 11 12.86 -02 07.3 8.550 8.863 1.5 / 40 17.8 26 .82
28 20 11 12.92 -02 06.2 8.535 8.864 1.5 / 36 17.8 13 .74
29 20 11 12.98 -02 05.0 8.520 8.865 1.4 / 31 17.8 5 .64
30 20 11 13.03 -02 03.8 8.505 8.866 1.4 / 27 17.8 13 .55
31 20 11 13.07 -02 02.5 8.490 8.866 1.4 / 22 17.8 25 .45
2008 Jan. 1 20 11 13.11 -02 01.2 8.475 8.867 1.5 / 17 17.7 37 .36
NAKANO
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write mail from CFAD0::NAKANO on 2007-11-25 04:29:04(JS
*** The comet will pass 1.88 AU from Saturn on 2008 July 28 ***
C/2007 D1 (LINEAR)
Epoch 2007 June 29.0 TT = JDT 2454280.5
T 2007 June 20.25068 TT Nakano
q 8.7930816 (2000.0) P Q
z -0.0002157 Peri. 340.20016 -0.89027787 -0.44375699
+/-0.0000094 Node 171.10091 +0.45287713 -0.83892714
e 1.0018971 Incl. 41.44695 -0.04803760 +0.31508884
From 196 observations 2007 Feb. 17-June 23, mean residual 0".63.
(1/a)org.= +0.000036, (1/a)fut.= +0.000731 (+/-0.000009), Q= 6.
NAKANO
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(C) Copyright 2007 OAA/ComputingSection
write mail from CFAD0::NAKANO on 2007-07-09 03:50:16(JST).
C/2007 D1 (LINEAR)
Epoch 2007 June 29.0 TT = JDT 2454280.5
T 2007 June 21.11363 TT Nakano
q 8.7924290 (2000.0) P Q
z -0.0002276 Peri. 340.24528 -0.89064055 -0.44303595
+/-0.0000135 Node 171.10313 +0.45219015 -0.83931469
e 1.0020009 Incl. 41.44385 -0.04778582 +0.31507141
From 190 observations 2007 Feb. 17-2007 May 16, mean residual 0".63.
(1/a)org.= +0.000025, (1/a)fut.= +0.000719 (+/-0.000013), Q= 5.
NAKANO
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write mail from CFAD0::NAKANO on 2007-06-06 06:36:40(JST).
C/2007 D1 (LINEAR)
T 2007 June 8.33933 TT Nakano
q 8.7966680 (2000.0) P Q
Peri. 339.55116 -0.88526922 -0.45370703
Node 171.11324 +0.46221108 -0.83392761
e 1.0 Incl. 41.42781 -0.05156863 +0.31418891
From 168 observations 2007 Feb. 17-Apr. 15.
NAKANO
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write mail from CFAD0::NAKANO on 2007-05-04 04:01:44(JST).
C/2007 D1 (LINEAR)
T 2006 Dec. 16.37810 TT Nakano
q 8.7071546 (2000.0) P Q
Peri. 329.66384 -0.79994671 -0.59301821
Node 171.86310 +0.59163358 -0.75388412
e 1.0 Incl. 40.39864 -0.10027447 +0.28282174
From 84 observations 2007 Feb. 17-27.
NAKANO
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write mail from CFAD0::NAKANO on 2007-03-05 06:22:02(JST).
C/2007 D1 (LINEAR)
T 2006 Dec. 16.37810 TT Nakano
q 8.7071546 (2000.0) P Q
Peri. 329.66384 -0.79994671 -0.59301821
Node 171.86310 +0.59163358 -0.75388412
e 1.0 Incl. 40.39864 -0.10027447 +0.28282174
From 84 observations 2007 Feb. 17-27.
NAKANO
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write mail from CFAD0::NAKANO on 2007-03-05 06:21:26(JST).
C/2007 D1の軌道と予報位置です
美星（浅見・坂本）と上尾の門田健一氏から，２月19日と21日の観測の報告が
ありました．彗星の CCD全光度は，それぞれ，18.0等と17.3等でした．美星の観
測を受けた段階では，放物線軌道が決定できませんでした．
一般の方法では，軌道が出ないために，離心率をｅ= 1.045 と仮定して計算し
ました．しかし，この離心率は，準放物線のケプラー運動の近似式での解法の域
を越えます．軌道は，双曲線のケプラー運動をダイレクトに解いていません．従っ
て，軌道改良するときも，軌道から残差を出すときも，軌道から位置予報を計算
するときも，双曲線のケプラー・モーションを解けていません．つまり，軌道も
残差も位置予報も，まったく，デタラメかも知れません（でしょう）．
ただ単に，私の持っているプログラムでは，軌道が出ないだけかも知れません
が，全天サーベイで色々な特殊な天体が発見されていますので，太陽のそば，あ
るいは，遠方を離心率がｅ= 1.5とか，2.0とか，10.0とかで直線状に通りすぎる
彗星が発見されるかも知れません．
C/2007 D1 (LINEAR)
T 2006 June 22.85765 TT Nakano
q 8.3829549 (2000.0) P Q
z -0.0053680 Peri. 318.22176 -0.67984659 -0.72974391
+/-0.0000681 Node 173.30103 +0.71979479 -0.64502119
e 1.0450000 Incl. 38.53914 -0.14037124 +0.22676310
From 52 observations 2007 Feb. 17-21.
Date/ TT R.A.(2000) Decl. Delta r Daily motion Mag. Moon Age
h h m ｡ , , / PA ｡ m1 ｡
2007 Feb. 20 12 09 44.61 -06 41.8 7.571 8.511 5.3 / 315 17.2 138 .11
21 12 09 44.36 -06 38.0 7.572 8.512 5.3 / 316 17.2 125 .20
22 12 09 44.11 -06 34.2 7.573 8.513 5.3 / 316 17.2 111 .30
23 12 09 43.87 -06 30.4 7.574 8.514 5.3 / 317 17.2 98 .41
24 12 09 43.62 -06 26.5 7.576 8.515 5.3 / 317 17.2 85 .52
25 12 09 43.38 -06 22.6 7.578 8.516 5.3 / 318 17.2 72 .63
26 12 09 43.14 -06 18.7 7.581 8.518 5.3 / 318 17.2 60 .73
27 12 09 42.90 -06 14.7 7.584 8.519 5.3 / 319 17.2 48 .81
28 12 09 42.67 -06 10.7 7.587 8.520 5.3 / 319 17.2 37 .89
Mar. 1 12 09 42.44 -06 06.7 7.590 8.521 5.3 / 320 17.2 28 .94
2 12 09 42.21 -06 02.6 7.594 8.522 5.3 / 320 17.2 21 .98
3 12 09 41.98 -05 58.5 7.598 8.523 5.3 / 321 17.2 21 1.00
4 12 09 41.76 -05 54.4 7.602 8.524 5.3 / 322 17.2 26 1.00
5 12 09 41.53 -05 50.3 7.606 8.525 5.3 / 322 17.2 35 .98
6 12 09 41.32 -05 46.1 7.611 8.526 5.3 / 323 17.2 45 .94
7 12 09 41.10 -05 41.9 7.616 8.527 5.2 / 323 17.2 56 .89
8 12 09 40.89 -05 37.7 7.622 8.528 5.2 / 324 17.2 67 .83
9 12 09 40.69 -05 33.5 7.627 8.530 5.2 / 325 17.2 78 .75
10 12 09 40.49 -05 29.3 7.633 8.531 5.2 / 325 17.2 89 .66
11 12 09 40.29 -05 25.0 7.640 8.532 5.1 / 326 17.2 101 .57
12 12 09 40.10 -05 20.8 7.646 8.533 5.1 / 327 17.2 113 .47
13 12 09 39.91 -05 16.5 7.653 8.534 5.1 / 327 17.2 125 .36
14 12 09 39.72 -05 12.2 7.660 8.535 5.1 / 328 17.2 137 .27
15 12 09 39.54 -05 07.9 7.667 8.536 5.0 / 329 17.2 148 .17
16 12 09 39.37 -05 03.6 7.675 8.537 5.0 / 330 17.2 157 .10
17 12 09 39.20 -04 59.3 7.683 8.539 5.0 / 330 17.2 160 .04
18 12 09 39.04 -04 55.0 7.691 8.540 4.9 / 331 17.2 154 .01
19 12 09 38.88 -04 50.7 7.699 8.541 4.9 / 332 17.2 142 .00
20 12 09 38.72 -04 46.3 7.708 8.542 4.9 / 333 17.3 129 .03
21 12 09 38.57 -04 42.0 7.717 8.543 4.8 / 334 17.3 115 .09
22 12 09 38.43 -04 37.7 7.726 8.544 4.8 / 335 17.3 101 .16
23 12 09 38.29 -04 33.4 7.736 8.546 4.7 / 335 17.3 87 .26
24 12 09 38.16 -04 29.1 7.745 8.547 4.7 / 336 17.3 74 .36
25 12 09 38.04 -04 24.8 7.755 8.548 4.7 / 337 17.3 61 .47
26 12 09 37.92 -04 20.5 7.765 8.549 4.6 / 338 17.3 49 .58
27 12 09 37.80 -04 16.2 7.776 8.550 4.6 / 339 17.3 37 .68
28 12 09 37.70 -04 11.9 7.786 8.551 4.5 / 340 17.3 27 .77
29 12 09 37.59 -04 07.7 7.797 8.553 4.5 / 342 17.3 20 .85
30 12 09 37.50 -04 03.4 7.808 8.554 4.4 / 343 17.3 19 .91
31 12 09 37.41 -03 59.2 7.819 8.555 4.4 / 344 17.3 25 .96
Apr. 1 12 09 37.33 -03 54.9 7.831 8.556 4.4 / 345 17.3 34 .99
NAKANO
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write mail from CFAD0::NAKANO on 2007-02-22 03:06:21(JST).
戻ります。