C/2007 T1 (McNaught)
Epoch 2007 Dec. 6.0 TT = JDT 2454440.5
T 2007 Dec. 12.52984 TT Nakano
q 0.9685029 (2000.0) P Q
z +0.0002527 Peri. 233.75509 -0.13224994 -0.55004491
+/-0.0000028 Node 111.43334 -0.34619486 +0.80514673
e 0.9997552 Incl. 117.64242 -0.92879442 -0.22178670
From 318 observations 2007 Oct. 9-2008 Apr. 10, mean residual 0".58.
(1/a)org.= +0.000611, (1/a)fut.= +0.000461 (+/-0.000003), Q= 7.
Residuals in seconds of arc
2007/ 071013 E11 0.1+ 0.2- 080110 423 1.2- 0.3-
071009 E12 0.0 0.2- 071013 104 0.4+ 0.3+ 080110 423 1.6- 1.1-
071009 E12 0.0 0.2- 071013 104 0.2+ 0.3+ 080111 E00 0.2+ 0.1-
071009 E12 0.1+ 0.3- 071013 104 0.0 0.4+ 080111 E00 (2.2- 2.0-)
071009 E12 0.0 0.2- 071013 235 0.3- 0.3+ 080111 E00 1.7- 0.8-
071009 595 0.5+ 0.8+ 071013 J47 0.6+ 0.0 080111 423 1.2- 0.2-
071009 473 1.2+ 0.5+ 071013 J47 0.2- 0.1+ 080111 423 0.8- 0.1-
071009 473 0.6- 1.1+ 071013 J47 0.8+ 0.3- 080112 834 0.6- 0.1+
071009 595 0.2+ 0.6+ 071013 J47 0.6+ 0.1- 080112 834 1.1- 0.1-
071009 595 1.2+ 0.6+ 071013 J47 0.8- 1.1+ 080112 834 0.5- 0.2-
071009 024 0.5- 0.0 071014 H47 0.1- 0.2+ 080112 834 0.9- 0.2-
071009 151 0.5+ 0.8+ 071014 H47 0.6+ 0.7+ 080115 423 1.2- 0.7-
071009 151 0.8+ 0.3+ 071014 E12 0.1- 0.3- 080115 423 0.6- 0.1-
071009 024 0.1- 0.2+ 071014 E12 0.2- 0.3- 080117 834 0.3- 0.1+
071009 151 0.9+ 0.2+ 071014 E00 0.5+ 1.2- 080117 834 1.0- 0.4-
071009 024 0.3- 0.0 071014 E00 0.2+ 0.2- 080120 834 1.0- 0.3+
071009 B04 0.4- 0.7+ 071014 E00 0.8+ 1.0+ 080120 834 0.8- 0.1-
071009 B04 0.2- 0.2+ 071014 415 0.1- 0.1- 080126 467 0.6- 0.6-
071009 B04 0.7+ 0.3+ 071014 415 0.0 0.6- 080126 467 0.7- 0.0
071009 151 0.2+ 0.2+ 071014 246 0.3+ 0.1+ 080126 467 0.6- 0.1-
071009 B04 0.4- 0.2+ 071014 246 0.2+ 0.0 080127 D90 0.5- 0.1+
071009 595 0.6+ 0.5+ 071014 246 0.2+ 0.2+ 080127 D90 0.3- 0.0
071009 151 0.2+ 0.1+ 071014 246 0.4+ 0.1+ 080201 467 0.1+ 0.4+
071009 151 0.0 0.0 071014 246 0.1+ 0.0 080201 467 0.4+ 0.2+
071009 B04 0.3- 0.4+ 071014 246 0.3+ 0.1+ 080201 467 0.3+ 0.3+
071009 B04 0.9- 0.3+ 071014 235 0.4- 0.1+ 080202 E00 0.7+ 0.3+
071009 595 0.8+ 0.2+ 071014 A18 0.2+ 0.6+ 080202 E00 1.1- 0.4+
071009 A77 0.9+ 0.0 071014 A18 0.4+ 0.4+ 080202 E00 (3.2+ 0.2-)
071009 A77 0.9+ 0.3- 071014 J70 0.1- 0.3- 080205 467 0.0 0.3+
071009 A77 0.8+ 0.2+ 071014 J70 1.1- 1.0- 080205 467 0.5+ 0.4+
071009 A77 1.0+ 0.1+ 071014 J70 0.2- 0.3+ 080205 467 0.3+ 0.4+
071009 046 0.1+ 0.8+ 071014 J70 1.1- 0.1- 080206 467 0.3+ 0.0
071009 A77 0.8+ 0.1+ 071014 J70 0.5+ 0.3+ 080206 467 0.2+ 0.1-
071009 046 0.3+ 0.6+ 071014 J70 0.7+ 1.5- 080206 467 0.2+ 0.0
071009 046 0.0 0.2+ 071014 A18 0.1+ 0.0 080208 467 0.3+ 0.3-
071009 046 0.1+ 0.6+ 071014 I77 1.9+ 0.2+ 080208 467 0.0 0.3-
071009 A77 0.8+ 0.0 071015 E12 0.2- 0.2- 080208 467 0.3+ 0.4-
071009 046 0.1- 0.6+ 071015 J70 0.4+ 0.5- 080210 834 0.1+ 0.7-
071009 046 0.2- 0.4+ 071015 J70 0.3+ 0.2+ 080210 834 0.3- 0.4-
071009 046 0.3- 0.9+ 071015 J70 1.2+ 0.6- 080210 834 0.1- 0.3-
071009 046 0.4- 0.9+ 071015 J70 1.9+ 1.1- 080210 834 0.4+ 0.2-
071009 046 0.4- 0.6+ 071015 I77 1.0+ 0.4- 080212 834 0.1- 0.2-
071009 A77 1.0+ 0.2+ 071015 I77 0.1- 0.2- 080212 834 0.3- 0.0
071009 J95 0.0 0.8+ 071015 I77 0.1- 0.2- 080212 834 0.2- 0.6-
071009 A77 1.3+ 0.0 071016 E12 0.1- 0.3- 080212 834 0.3- 0.5-
071009 J95 0.3+ 0.6+ 071016 E12 0.2- 0.2- 080216 415 0.0 0.2-
071009 J95 0.1+ 0.3+ 071016 585 0.4- 1.5+ 080216 415 0.4- 0.7-
071009 J95 0.1+ 0.2+ 071016 585 0.5- 0.7+ 080226 467 0.1- 0.4-
071009 A77 0.6+ 0.2+ 071016 585 0.6- 0.0 080226 467 0.5- 0.3-
071009 A77 0.8+ 0.2+ 071016 585 0.2+ 0.7+ 080226 467 0.6- 0.2-
071009 A77 0.7+ 0.0 071016 585 1.0- 0.9+ 080228 467 0.6- 0.3-
071009 A77 0.9+ 0.2+ 071016 A97 1.3- 0.5+ 080228 467 0.5- 0.0
071009 A77 0.8+ 0.4+ 071016 A97 (0.0 2.0-) 080228 467 0.5- 0.1+
071009 A77 0.6+ 0.5+ 071018 E12 0.0 0.4- 080229 E12 0.3- 0.0
071009 I77 0.2+ 0.1+ 071018 E12 0.1- 0.3- 080229 E12 0.4- 0.2-
071009 I77 0.2+ 0.0 071019 E12 0.2- 0.2- 080229 E12 0.3- 0.2-
071009 I77 0.4- 0.0 071020 413 0.6- 0.3- 080229 E12 0.4- 0.2-
071010 H06 0.9+ 0.7+ 071020 413 0.6- 0.1- 080305 900 1.6- 0.9+
071010 H06 0.0 0.2+ 071020 413 0.6- 0.1- 080305 900 (5.3- 16.9+)
071010 104 1.3- 1.2+ 071020 413 0.6- 0.1- 080308 349 0.3+ 0.3+
071010 104 (2.7+ 0.7+) 071020 D88 0.5+ 0.3+ 080308 349 0.4+ 0.3+
071010 104 0.9+ 1.4+ 071020 413 0.6- 0.1- 080308 349 0.2+ 0.4+
071010 104 (2.2+ 1.7+) 071020 413 0.6- 0.1- 080309 349 0.1+ 0.7+
071010 204 0.2- 0.5+ 071020 413 0.6- 0.1- 080309 349 0.3+ 0.9+
071010 204 0.1+ 0.5+ 071020 413 0.6- 0.1- 080309 415 0.2- 0.0
071010 J46 0.3+ 0.3+ 071020 413 0.6- 0.1- 080309 415 0.7- 0.0
071010 204 0.6+ 0.5+ 071020 349 0.3+ 0.1- 080313 423 0.0 0.2+
071010 204 0.1+ 0.3+ 071020 413 0.6- 0.1- 080313 423 0.5- 0.3-
071010 J46 0.4+ 0.5+ 071020 D88 0.5+ 0.4+ 080314 423 1.1- 0.1-
071010 J46 0.3- 0.5+ 071020 349 0.3+ 0.2- 080314 423 0.5+ 0.1-
071010 J47 0.8+ 1.0+ 071020 D88 0.6+ 0.5+ 080315 423 0.7- 0.0
071010 J47 0.1- 1.3+ 071020 349 0.1+ 0.2- 080315 900 0.6+ 0.0
071010 J47 1.1+ 0.4- 071021 D88 0.1+ 1.1+ 080315 900 0.2- 0.7+
071010 J47 0.4- 0.2+ 071021 349 0.1+ 0.1- 080315 423 0.5- 0.3-
071010 I77 0.4- 0.9- 071021 D88 0.6+ 0.3+ 080316 349 0.3- 0.7+
071010 I77 0.3- 0.2- 071021 349 0.2+ 0.1+ 080316 349 0.1+ 0.2+
071010 I77 0.3- 0.4+ 071021 349 0.2+ 0.1+ 080317 467 0.7- 0.7+
071011 H68 0.1+ 1.1- 071021 D88 0.0 0.4+ 080317 467 0.5- 0.2+
071011 H68 0.3+ 0.9- 071021 D81 1.7+ 1.2+ 080320 467 0.6- 0.2-
071011 H47 0.2- 0.1- 071021 372 0.7+ 0.4- 080320 467 1.2- 0.7-
071011 H47 0.3- 0.6+ 071021 D81 0.5- 0.0 080320 467 0.8- 0.1+
071011 H68 0.1+ 0.9- 071021 D81 1.1+ 1.8- 080322 349 0.1- 0.3-
071011 H68 0.2+ 0.8- 071021 D81 0.7- 1.7+ 080322 349 0.6+ 0.2+
071011 H68 0.2+ 0.8- 071021 372 0.3+ 0.5- 080323 204 0.2- 0.0
071011 415 0.0 0.1+ 071021 E12 0.2- 0.3- 080323 204 0.1+ 0.3+
071011 415 0.2+ 0.2- 071021 372 1.4+ 0.6- 080324 J70 1.9+ 1.9+
071011 235 0.2- 0.7+ 071021 E12 0.2- 0.3- 080324 J70 1.6- 0.4-
071012 H47 0.2- 0.5+ 071021 D70 0.3+ 0.3- 080324 J70 0.3+ 1.9-
071012 H47 0.5- 0.1+ 071021 D70 0.3- 0.7- 080324 J70 1.7+ 0.9-
071012 E12 0.0 0.2- 071021 D70 0.6- 0.5- 080324 J70 0.5- 1.0-
071012 E12 0.1- 0.6- 071021 213 0.3- 0.0 080324 J70 0.3+ 0.9-
071012 415 0.2- 0.1- 071021 213 0.5- 0.5- 080324 J70 0.6- 1.0-
071012 415 0.2- 1.0- 071022 E12 0.1- 0.5- 080324 J70 0.3- 0.6-
071012 E00 1.3+ 0.4+ 071023 372 0.2- 0.6+ 080324 J70 0.8- 0.3-
071012 E00 0.7+ 0.9- 071028 349 0.1+ 0.3- 080327 467 1.3- 0.4+
071012 E00 1.4+ 0.8+ 071028 349 0.2+ 0.1- 080327 467 0.5- 0.4+
071012 A77 0.1+ 0.9+ 071028 349 0.1+ 0.2- 080327 467 1.0- 0.5+
071012 A77 0.5- 0.0 071028 D88 0.2+ 0.2+ 080404 467 0.1- 0.5-
071012 A77 0.1+ 0.4+ 071028 D88 0.0 0.2+ 080404 467 0.7+ 0.0
071012 I77 0.5+ 0.1+ 071028 D88 0.2+ 0.1+ 080404 467 0.4- 0.3-
071012 I77 0.5+ 0.1- 071103 349 1.1+ 0.3+ 080404 235 0.3+ 0.1+
071013 H47 1.7- 0.2+ 071103 349 1.1+ 0.6+ 080405 204 0.6- 0.0
071013 H47 0.1+ 0.1- 071103 349 0.8+ 0.6+ 080407 215 0.5- 0.1-
071013 H06 0.4+ 0.1- 071104 349 0.8+ 0.4- 080407 215 0.9- 0.0
071013 H06 0.3- 0.3- 071104 349 0.6+ 0.0 080407 215 0.8- 0.1+
071013 E12 0.1- 0.3- 2008/ 080410 467 0.3- 0.1+
071013 E12 0.1- 0.3- 080108 834 1.2- 0.1- 080410 467 0.4- 0.3-
071013 E12 0.1- 0.3- 080108 834 1.0- 0.0 080410 467 0.0 0.5-
071013 E11 0.4- 0.4+ 080108 834 1.0- 0.1+
NAKANO
**** Don't distribute anyone except personal use only ****
(C) Copyright 2009 OAA/ComputingSection
write mail from CFAD0::NAKANO on 2009-01-06 06:55:26(JST).
C/2007 T1 (McNaught)
Epoch 2007 Dec. 6.0 TT = JDT 2454440.5
T 2007 Dec. 12.52973 TT Nakano
q 0.9685019 (2000.0) P Q
z +0.0002586 Peri. 233.75506 -0.13224787 -0.55004628
+/-0.0000035 Node 111.43347 -0.34619538 +0.80514552
e 0.9997496 Incl. 117.64240 -0.92879452 -0.22178771
From 291 observations 2007 Oct. 9-2008 Mar. 20, mean residual 0".56.
(1/a)org.= +0.000617, (1/a)fut.= +0.000466 (+/-0.000004), Q= 6.
◎C/2007 T1の軌道と予報位置 [From YC 2582]
マックノート彗星 C/2007 T1 (McNaught)
３月に入ってからの彗星の全光度観測が３月１日に10.3等（ゴンザレス；ス
ペイン），10.3等，２日に10.4等，５日に10.5等（ゴイアト；ブラジル），10.7
等（吉田誠一；茨城），10.5等（ゴンザレス），６日に10.4等，７日，８日，９
日に10.5等（ゴイアト）と彗星は，10等級で観測されている．彗星は，守山の井
狩康一氏（３月５日と15日）と上尾の門田健一氏（３月８日と９日）によって捕
らえられた．門田氏（K. Kadota）によるCCD全光度は，３月８日に13.1等，９日
に13.4等，16日に13.8等であった（cf. YC 2570）．
OAA計算課では，2007年10月９日から2008年３月15日までに行なわれた284個
の観測から次の軌道を決定した．平均残差は0".63．軌道改良に使用した最終観測
の一群は，井狩氏（Y. Ikari）によるもの．なお，４月の毎日の予報位置が天文
ガイド（p. 145）にある．
Epoch = 2007 Dec. 6.0 TT ｡
Ｔ = 2007 Dec. 12.5297 TT ω = 233.7550 (1/a)org.= +0.000618
ｅ = 0.999748 Ω = 111.4335 (2000.0) (1/a)fut.= +0.000468
ｑ = 0.968502 AU ｉ = 117.6424 ( Q = 6 )
2008/ α (2000) δ △ ｒ Daily motion Elong. Phase m1 天文薄明終了時
21h JST h m ｡ , AU AU , ｡ ｡ ｡ 等 h｡ A ｡
Mar. 31 06 14.18 -09 32.7 1.841 2.005 39.1/ 17 84.2 29.7 11.8 +35.5 40.6
Apr. 1 06 14.96 -08 55.4 1.868 2.017 38.1/ 18 83.5 29.5 11.9 +35.5 42.1
2 06 15.74 -08 19.1 1.895 2.029 37.1/ 18 82.8 29.3 12.0 +35.4 43.5
3 06 16.52 -07 43.9 1.922 2.042 36.1/ 19 82.1 29.0 12.0 +35.3 45.0
4 06 17.32 -07 09.8 1.950 2.054 35.2/ 20 81.4 28.8 12.1 +35.2 46.4
5 06 18.12 -06 36.6 1.977 2.066 34.4/ 20 80.7 28.5 12.1 +35.0 47.8
6 06 18.93 -06 04.4 2.005 2.079 33.5/ 21 80.0 28.3 12.2 +34.8 49.2
7 06 19.74 -05 33.2 2.032 2.091 32.7/ 22 79.2 28.1 12.2 +34.5 50.6
8 06 20.56 -05 02.8 2.060 2.103 32.0/ 23 78.5 27.8 12.3 +34.3 51.9
9 06 21.38 -04 33.3 2.088 2.116 31.2/ 23 77.8 27.6 12.4 +34.0 53.3
10 06 22.21 -04 04.7 2.115 2.128 30.5/ 24 77.0 27.3 12.4 +33.6 54.6
11 06 23.04 -03 36.8 2.143 2.140 29.8/ 25 76.3 27.1 12.5 +33.3 55.9
12 06 23.88 -03 09.7 2.171 2.152 29.2/ 26 75.6 26.8 12.5 +32.9 57.2
13 06 24.72 -02 43.4 2.199 2.165 28.5/ 26 74.8 26.6 12.6 +32.5 58.4
14 06 25.56 -02 17.9 2.227 2.177 27.9/ 27 74.1 26.3 12.6 +32.1 59.7
15 06 26.41 -01 53.0 2.255 2.189 27.4/ 28 73.3 26.0 12.7 +31.6 60.9
16 06 27.27 -01 28.8 2.283 2.202 26.8/ 29 72.6 25.8 12.7 +31.2 62.1
17 06 28.12 -01 05.3 2.311 2.214 26.3/ 29 71.8 25.5 12.8 +30.7 63.2
18 06 28.99 -00 42.4 2.339 2.226 25.8/ 30 71.1 25.3 12.8 +30.2 64.4
19 06 29.85 -00 20.1 2.367 2.238 25.3/ 31 70.3 25.0 12.9 +29.6 65.5
20 06 30.72 +00 01.6 2.395 2.251 24.8/ 32 69.6 24.7 12.9 +29.1 66.6
21 06 31.59 +00 22.7 2.423 2.263 24.4/ 32 68.8 24.5 13.0 +28.5 67.7
22 06 32.46 +00 43.3 2.450 2.275 23.9/ 33 68.1 24.2 13.0 +28.0 68.8
23 06 33.33 +01 03.3 2.478 2.287 23.5/ 34 67.3 23.9 13.1 +27.4 69.9
24 06 34.21 +01 22.8 2.506 2.299 23.1/ 35 66.6 23.7 13.1 +26.8 70.9
25 06 35.09 +01 41.8 2.534 2.312 22.8/ 36 65.8 23.4 13.2 +26.2 71.9
26 06 35.98 +02 00.3 2.561 2.324 22.4/ 36 65.1 23.1 13.2 +25.5 72.9
27 06 36.86 +02 18.3 2.589 2.336 22.0/ 37 64.3 22.9 13.3 +24.9 73.9
28 06 37.75 +02 35.9 2.616 2.348 21.7/ 38 63.6 22.6 13.3 +24.3 74.9
29 06 38.64 +02 53.0 2.644 2.360 21.4/ 39 62.8 22.3 13.3 +23.6 75.9
30 06 39.53 +03 09.7 2.671 2.372 21.1/ 39 62.1 22.0 13.4 +22.9 76.8
May 1 06 40.43 +03 25.9 2.699 2.385 20.8/ 40 61.3 21.8 13.4 +22.3 77.7
m1 = 7.5 + 5 log △ + 10.0 log ｒ
NAKANO
**** Don't distribute anyone except personal use only ****
(C) Copyright 2008 OAA/ComputingSection
write mail from CFAD0::NAKANO on 2008-03-29 06:28:30(JST).
◎C/2007 T1の軌道と予報位置です
北半球での観測が守山の井狩康一氏（３月５日）と上尾の門田健一氏（３月８日と
９日）から報告されました．ただし，井狩氏の観測は，別物を捕らえている可能性が
あります．門田氏のCCD全光度は，それぞれ，13.1等と13.4等でした．
C/2007 T1 (McNaught)
Epoch 2007 Dec. 6.0 TT = JDT 2454440.5
T 2007 Dec. 12.52964 TT Nakano
q 0.9685012 (2000.0) P Q
z +0.0002620 Peri. 233.75503 -0.13224637 -0.55004732
+/-0.0000043 Node 111.43356 -0.34619598 +0.80514456
e 0.9997462 Incl. 117.64239 -0.92879451 -0.22178861
From 274 observations 2007 Oct. 9-2008 Mar. 9, mean residual 0".64.
(1/a)org.= +0.000621, (1/a)fut.= +0.000470 (+/-0.000004), Q= 6.
2008/ α (2000) δ △ ｒ Daily motion Elong. Phase m1 天文薄明終了時 21h JST h m ｡ , AU AU , ｡ ｡ ｡ 等 h｡ A ｡
Mar. 10 06 00.16 -28 11.4 1.333 1.745 71.4/ 6 96.1 34.5 12.0 +25.6 10.1
11 06 00.69 -27 00.3 1.354 1.758 69.4/ 6 95.8 34.2 12.1 +26.6 11.4
12 06 01.24 -25 51.4 1.375 1.770 67.4/ 7 95.4 34.0 12.2 +27.5 12.7
13 06 01.81 -24 44.4 1.396 1.782 65.5/ 7 95.0 33.8 12.2 +28.4 14.1
14 06 02.40 -23 39.5 1.418 1.795 63.6/ 8 94.5 33.5 12.3 +29.2 15.4
15 06 03.00 -22 36.4 1.440 1.807 61.7/ 8 94.0 33.3 12.4 +30.0 16.8
16 06 03.61 -21 35.3 1.463 1.819 59.9/ 8 93.5 33.1 12.5 +30.7 18.2
17 06 04.24 -20 36.0 1.486 1.832 58.2/ 9 93.0 32.9 12.6 +31.4 19.6
18 06 04.89 -19 38.5 1.509 1.844 56.5/ 9 92.5 32.6 12.6 +32.0 21.1
19 06 05.54 -18 42.8 1.533 1.856 54.9/ 10 91.9 32.4 12.7 +32.6 22.5
20 06 06.21 -17 48.8 1.557 1.869 53.3/ 11 91.4 32.2 12.8 +33.1 24.0
21 06 06.89 -16 56.4 1.582 1.881 51.7/ 11 90.8 32.0 12.9 +33.5 25.5
22 06 07.57 -16 05.6 1.607 1.893 50.2/ 12 90.2 31.8 13.0 +34.0 27.0
23 06 08.27 -15 16.4 1.632 1.906 48.8/ 12 89.6 31.5 13.0 +34.3 28.5
24 06 08.98 -14 28.7 1.657 1.918 47.4/ 13 88.9 31.3 13.1 +34.6 30.0
25 06 09.70 -13 42.4 1.683 1.930 46.1/ 13 88.3 31.1 13.2 +34.9 31.6
26 06 10.42 -12 57.5 1.709 1.943 44.8/ 14 87.6 30.9 13.3 +35.1 33.1
27 06 11.16 -12 14.0 1.735 1.955 43.6/ 15 87.0 30.6 13.4 +35.3 34.6
28 06 11.90 -11 31.8 1.761 1.967 42.4/ 15 86.3 30.4 13.4 +35.4 36.1
29 06 12.66 -10 50.9 1.787 1.980 41.2/ 16 85.6 30.2 13.5 +35.5 37.6
30 06 13.41 -10 11.2 1.814 1.992 40.1/ 16 84.9 30.0 13.6 +35.5 39.1
31 06 14.18 -09 32.7 1.841 2.005 39.1/ 17 84.2 29.7 13.7 +35.5 40.6
Apr. 1 06 14.96 -08 55.4 1.868 2.017 38.1/ 18 83.5 29.5 13.7 +35.5 42.1
2 06 15.74 -08 19.1 1.895 2.029 37.1/ 18 82.8 29.3 13.8 +35.4 43.5
3 06 16.52 -07 43.9 1.922 2.042 36.1/ 19 82.1 29.0 13.9 +35.3 45.0
4 06 17.32 -07 09.8 1.950 2.054 35.2/ 20 81.4 28.8 14.0 +35.2 46.4
5 06 18.12 -06 36.6 1.977 2.066 34.4/ 20 80.7 28.5 14.0 +35.0 47.8
6 06 18.93 -06 04.4 2.004 2.079 33.5/ 21 80.0 28.3 14.1 +34.8 49.2
7 06 19.74 -05 33.2 2.032 2.091 32.7/ 22 79.2 28.1 14.2 +34.5 50.6
8 06 20.56 -05 02.8 2.060 2.103 32.0/ 23 78.5 27.8 14.2 +34.3 51.9
9 06 21.38 -04 33.3 2.088 2.116 31.2/ 23 77.8 27.6 14.3 +34.0 53.3
10 06 22.21 -04 04.7 2.115 2.128 30.5/ 24 77.0 27.3 14.4 +33.6 54.6
11 06 23.04 -03 36.8 2.143 2.140 29.8/ 25 76.3 27.1 14.4 +33.3 55.9
12 06 23.88 -03 09.7 2.171 2.152 29.2/ 26 75.6 26.8 14.5 +32.9 57.2
13 06 24.72 -02 43.4 2.199 2.165 28.5/ 26 74.8 26.6 14.6 +32.5 58.4
14 06 25.56 -02 17.9 2.227 2.177 27.9/ 27 74.1 26.3 14.6 +32.1 59.7
15 06 26.41 -01 53.0 2.255 2.189 27.4/ 28 73.3 26.0 14.7 +31.6 60.9
16 06 27.27 -01 28.8 2.283 2.202 26.8/ 29 72.6 25.8 14.8 +31.2 62.1
17 06 28.12 -01 05.2 2.311 2.214 26.3/ 29 71.8 25.5 14.8 +30.7 63.3
18 06 28.99 -00 42.4 2.339 2.226 25.8/ 30 71.1 25.3 14.9 +30.2 64.4
19 06 29.85 -00 20.1 2.367 2.238 25.3/ 31 70.3 25.0 15.0 +29.6 65.5
20 06 30.72 +00 01.6 2.395 2.251 24.8/ 32 69.6 24.7 15.0 +29.1 66.6
21 06 31.59 +00 22.7 2.423 2.263 24.4/ 32 68.8 24.5 15.1 +28.5 67.7
22 06 32.46 +00 43.3 2.450 2.275 23.9/ 33 68.1 24.2 15.2 +28.0 68.8
23 06 33.33 +01 03.3 2.478 2.287 23.5/ 34 67.3 23.9 15.2 +27.4 69.9
24 06 34.21 +01 22.8 2.506 2.299 23.1/ 35 66.6 23.7 15.3 +26.8 70.9
25 06 35.09 +01 41.8 2.534 2.312 22.8/ 36 65.8 23.4 15.3 +26.2 71.9
26 06 35.98 +02 00.3 2.561 2.324 22.4/ 36 65.1 23.1 15.4 +25.5 72.9
27 06 36.86 +02 18.3 2.589 2.336 22.0/ 37 64.3 22.9 15.5 +24.9 73.9
28 06 37.75 +02 35.9 2.616 2.348 21.7/ 38 63.6 22.6 15.5 +24.3 74.9
29 06 38.64 +02 53.0 2.644 2.360 21.4/ 39 62.8 22.3 15.6 +23.6 75.9
30 06 39.53 +03 09.7 2.671 2.372 21.1/ 39 62.1 22.0 15.6 +22.9 76.8
May 1 06 40.43 +03 25.9 2.699 2.385 20.8/ 40 61.3 21.8 15.7 +22.3 77.7
m1 = 7.5 + 5 log △ + 16.0 log ｒ
NAKANO
**** Don't distribute anyone except personal use only ****
(C) Copyright 2008 OAA/ComputingSection
write mail from CFAD0::NAKANO on 2008-03-10 03:33:42(JST).
◎C/2007 T1の軌道と予報位置
2006 Q1と同様に南に低いこの彗星ですが，今月は，大きく北に昇ってきます．
２月の眼視全光度が２月１日に8.9等（アモリム），２日に9.2等，４日に9.3等（
ゴイアト），６日に9.3等（アモリム），７日に9.5等（ラエ），８日に9.0等（ア
モリム），13日に9.7等（ロブレド；アルゲンチン）と観測されています．そろそ
ろ，北半球でも，再観測できるでしょう．
ただし，すでに，天文ガイド３月号にも書いたとおり，近日点を昨年12月に通過
しているために，急速に暗くなるでしょう．
C/2007 T1 (McNaught)
Epoch 2007 Dec. 6.0 TT = JDT 2454440.5
T 2007 Dec. 12.52946 TT Nakano
q 0.9685013 (2000.0) P Q
z +0.0002605 Peri. 233.75490 -0.13224462 -0.55004834
+/-0.0000065 Node 111.43361 -0.34619795 +0.80514325
e 0.9997477 Incl. 117.64240 -0.92879402 -0.22179084
From 259 observations 2007 Oct. 9-2008 Feb. 16, mean residual 0".61.
(1/a)org.= +0.000619, (1/a)fut.= +0.000468 (+/-0.000006), Q= 6.
2008/ α (2000) δ △ ｒ Daily motion Elong. Phase m1 天文薄明終了時
21h JST h m ｡ , AU AU , ｡ ｡ ｡ 等 h｡ A ｡
Mar. 1 05 56.44 -40 25.4 1.178 1.635 90.0/ 2 97.5 36.9 11.3 +14.1 0.4
2 05 56.73 -38 55.5 1.192 1.648 88.0/ 3 97.6 36.6 11.4 +15.6 1.3
3 05 57.06 -37 27.6 1.208 1.660 85.9/ 3 97.5 36.3 11.4 +17.0 2.2
4 05 57.42 -36 01.8 1.224 1.672 83.9/ 3 97.5 36.0 11.5 +18.4 3.3
5 05 57.82 -34 38.0 1.240 1.684 81.8/ 4 97.3 35.7 11.6 +19.7 4.3
6 05 58.24 -33 16.5 1.258 1.696 79.7/ 4 97.2 35.5 11.7 +21.0 5.4
7 05 58.68 -31 57.0 1.276 1.709 77.6/ 4 97.0 35.2 11.8 +22.2 6.5
8 05 59.15 -30 39.7 1.294 1.721 75.5/ 5 96.7 35.0 11.8 +23.4 7.7
9 05 59.64 -29 24.5 1.314 1.733 73.4/ 5 96.4 34.7 11.9 +24.5 8.9
10 06 00.16 -28 11.4 1.333 1.745 71.4/ 6 96.1 34.5 12.0 +25.6 10.1
11 06 00.69 -27 00.3 1.354 1.758 69.4/ 6 95.8 34.2 12.1 +26.6 11.4
12 06 01.24 -25 51.4 1.375 1.770 67.4/ 7 95.4 34.0 12.2 +27.5 12.7
13 06 01.81 -24 44.4 1.396 1.782 65.5/ 7 95.0 33.8 12.2 +28.4 14.1
14 06 02.40 -23 39.5 1.418 1.795 63.6/ 8 94.5 33.5 12.3 +29.2 15.4
15 06 03.00 -22 36.4 1.440 1.807 61.7/ 8 94.0 33.3 12.4 +30.0 16.8
16 06 03.61 -21 35.3 1.463 1.819 59.9/ 8 93.5 33.1 12.5 +30.7 18.2
17 06 04.24 -20 36.0 1.486 1.832 58.2/ 9 93.0 32.9 12.6 +31.4 19.6
18 06 04.89 -19 38.5 1.509 1.844 56.5/ 9 92.5 32.6 12.6 +32.0 21.1
19 06 05.54 -18 42.8 1.533 1.856 54.9/ 10 91.9 32.4 12.7 +32.6 22.5
20 06 06.21 -17 48.8 1.557 1.869 53.3/ 11 91.4 32.2 12.8 +33.1 24.0
21 06 06.89 -16 56.4 1.582 1.881 51.7/ 11 90.8 32.0 12.9 +33.5 25.5
22 06 07.57 -16 05.6 1.607 1.893 50.2/ 12 90.2 31.8 13.0 +34.0 27.0
23 06 08.27 -15 16.4 1.632 1.906 48.8/ 12 89.6 31.5 13.0 +34.3 28.5
24 06 08.98 -14 28.7 1.657 1.918 47.4/ 13 88.9 31.3 13.1 +34.6 30.0
25 06 09.70 -13 42.4 1.683 1.930 46.1/ 13 88.3 31.1 13.2 +34.9 31.6
26 06 10.43 -12 57.5 1.709 1.943 44.8/ 14 87.6 30.9 13.3 +35.1 33.1
27 06 11.16 -12 14.0 1.735 1.955 43.6/ 15 87.0 30.6 13.4 +35.3 34.6
28 06 11.90 -11 31.8 1.761 1.967 42.4/ 15 86.3 30.4 13.4 +35.4 36.1
29 06 12.66 -10 50.9 1.787 1.980 41.2/ 16 85.6 30.2 13.5 +35.5 37.6
30 06 13.42 -10 11.2 1.814 1.992 40.1/ 16 84.9 30.0 13.6 +35.5 39.1
31 06 14.18 -09 32.7 1.841 2.005 39.1/ 17 84.2 29.7 13.7 +35.5 40.6
Apr. 1 06 14.96 -08 55.4 1.868 2.017 38.1/ 18 83.5 29.5 13.7 +35.5 42.1
m1 = 7.5 + 5 log △ + 16.0 log ｒ
NAKANO
**** Don't distribute anyone except personal use only ****
(C) Copyright 2008 OAA/ComputingSection
write mail from CFAD0::NAKANO on 2008-03-01 02:13:10(JST).
C/2007 T1 (McNaught)
Epoch 2007 Dec. 6.0 TT = JDT 2454440.5
T 2007 Dec. 12.52941 TT Nakano
q 0.9685005 (2000.0) P Q
z +0.0002617 Peri. 233.75492 -0.13224481 -0.55004911
+/-0.0000076 Node 111.43365 -0.34619816 +0.80514278
e 0.9997466 Incl. 117.64245 -0.92879392 -0.22179064
From 249 observations 2007 Oct. 9-2008 Feb. 8, mean residual 0".55.
(1/a)org.= +0.000620, (1/a)fut.= +0.000469 (+/-0.000008), Q= 6.
NAKANO
**** Don't distribute anyone except personal use only ****
(C) Copyright 2008 OAA/ComputingSection
write mail from CFAD0::NAKANO on 2008-02-15 03:48:21(JST).
C/2007 T1 (McNaught)
T 2007 Dec. 12.52039 TT Nakano
q 0.9688093 (2000.0) P Q
Peri. 233.72885 -0.13209055 -0.55008787
Node 111.42910 -0.34657889 +0.80500761
e 1.0 Incl. 117.64601 -0.92867387 -0.22218481
From 210 observations 2007 Oct. 9-Nov. 4.
NAKANO
**** Don't distribute anyone except personal use only ****
(C) Copyright 2007 OAA/ComputingSection
write mail from CFAD0::NAKANO on 2007-11-30 09:05:11(JST).
◎C/2007 T1の軌道と予報位置です
上尾の門田健一氏から10月20日の観測が報告されました．氏のCCD全光度は，
12.3等でした．眼視光度は，各地で10等級で観測されています．彗星は，12月
〜１月に９等級まで明るくなりますが，11月中旬には，北半球から見えなくな
ります．なお，彗星の地平光度は，薄暮時（太陽高度-6ﾟ）のものです．
C/2007 T1 (McNaught)
T 2007 Dec. 12.51644 TT Nakano
q 0.9689805 (2000.0) P Q
Peri. 233.71432 -0.13203282 -0.55014011
Node 111.42705 -0.34681215 +0.80491319
e 1.0 Incl. 117.65094 -0.92859500 -0.22239741
From 145 observations 2007 Oct. 9-20.
2007/ α (2000) δ △ ｒ Daily motion Elong. Phase m1 薄暮終了時
18h JST h m ｡ , AU AU , ｡ ｡ ｡ 等 h｡ A ｡
Oct. 20 17 12.56 -16 58.1 1.670 1.323 37.7/188 52.4 36.6 10.8 +27.1 39.8
21 17 12.19 -17 35.5 1.680 1.312 37.3/188 51.3 36.3 10.8 +26.2 40.2
22 17 11.83 -18 12.4 1.689 1.301 36.8/187 50.2 36.0 10.8 +25.3 40.5
23 17 11.49 -18 48.9 1.699 1.290 36.4/187 49.2 35.7 10.8 +24.3 40.8
24 17 11.18 -19 25.1 1.708 1.280 36.0/187 48.1 35.4 10.7 +23.4 41.1
25 17 10.88 -20 00.8 1.717 1.269 35.6/186 47.1 35.0 10.7 +22.5 41.3
26 17 10.59 -20 36.2 1.726 1.259 35.2/186 46.0 34.6 10.7 +21.6 41.6
27 17 10.32 -21 11.2 1.735 1.248 34.9/186 45.0 34.3 10.7 +20.7 41.9
28 17 10.07 -21 45.9 1.743 1.238 34.5/185 44.0 33.9 10.6 +19.8 42.2
29 17 09.83 -22 20.3 1.751 1.228 34.2/185 43.0 33.5 10.6 +18.9 42.4
30 17 09.61 -22 54.4 1.759 1.218 33.9/185 42.0 33.0 10.6 +18.0 42.7
31 17 09.40 -23 28.1 1.767 1.208 33.6/185 41.0 32.6 10.6 +17.1 42.9
Nov. 1 17 09.20 -24 01.6 1.775 1.198 33.3/184 40.0 32.2 10.5 +16.3 43.2
2 17 09.01 -24 34.8 1.782 1.189 33.1/184 39.0 31.7 10.5 +15.4 43.4
3 17 08.84 -25 07.8 1.790 1.179 32.8/184 38.0 31.2 10.5 +14.5 43.7
4 17 08.67 -25 40.5 1.797 1.170 32.6/184 37.1 30.7 10.5 +13.6 43.9
5 17 08.51 -26 13.1 1.803 1.160 32.3/183 36.1 30.3 10.4 +12.8 44.1
6 17 08.37 -26 45.3 1.810 1.151 32.1/183 35.2 29.8 10.4 +11.9 44.3
7 17 08.23 -27 17.4 1.816 1.142 31.9/183 34.3 29.2 10.4 +11.0 44.6
8 17 08.10 -27 49.3 1.822 1.134 31.8/183 33.4 28.7 10.3 +10.1 44.8
9 17 07.98 -28 21.1 1.827 1.125 31.6/183 32.5 28.2 10.3 +9.3 45.0
10 17 07.86 -28 52.6 1.832 1.117 31.4/183 31.6 27.7 10.3 +8.4 45.2
11 17 07.75 -29 24.0 1.837 1.108 31.3/182 30.7 27.2 10.3 +7.5 45.4
12 17 07.65 -29 55.3 1.842 1.100 31.2/182 29.9 26.6 10.2 +6.6 45.6
13 17 07.55 -30 26.4 1.846 1.092 31.1/182 29.0 26.1 10.2 +5.8 45.8
14 17 07.46 -30 57.5 1.850 1.085 30.9/182 28.2 25.6 10.2 +4.9 45.9
15 17 07.37 -31 28.4 1.854 1.077 30.9/182 27.4 25.0 10.2 +4.0 46.1
16 17 07.28 -31 59.2 1.857 1.070 30.8/182 26.7 24.5 10.1 +3.1 46.3
17 17 07.20 -32 30.0 1.860 1.063 30.7/182 25.9 24.0 10.1 +2.3 46.5
18 17 07.12 -33 00.7 1.862 1.056 30.6/182 25.2 23.5 10.1 +1.4 46.6
19 17 07.04 -33 31.3 1.864 1.049 30.6/182 24.5 23.0 10.1 +0.5 46.8
20 17 06.96 -34 01.9 1.866 1.043 30.6/182 23.9 22.6 10.0 -0.4 46.9
21 17 06.88 -34 32.4 1.868 1.036 30.5/182 23.3 22.1 10.0 -1.3 47.1
22 17 06.81 -35 02.9 1.869 1.030 30.5/182 22.7 21.7 10.0 -2.1 47.2
23 17 06.73 -35 33.5 1.869 1.025 30.5/182 22.2 21.3 10.0 -3.0 47.3
24 17 06.66 -36 04.0 1.869 1.019 30.5/182 21.7 21.0 9.9 -3.9 47.5
25 17 06.58 -36 34.5 1.869 1.014 30.6/182 21.2 20.6 9.9 -4.8 47.6
26 17 06.51 -37 05.0 1.869 1.009 30.6/182 20.8 20.3 9.9 -5.7 47.7
27 17 06.43 -37 35.6 1.868 1.004 30.6/182 20.5 20.1 9.9 -6.6 47.8
28 17 06.36 -38 06.2 1.866 1.000 30.7/182 20.2 19.9 9.9 -7.5 47.9
29 17 06.28 -38 36.9 1.864 0.996 30.8/182 20.0 19.8 9.8 -8.4 48.0
30 17 06.21 -39 07.7 1.862 0.992 30.9/182 19.8 19.7 9.8 -9.3 48.1
Dec. 1 17 06.13 -39 38.5 1.859 0.988 31.0/182 19.7 19.6 9.8 -10.2 48.1
m1 = 8.5 + 5 log △ + 10.0 log ｒ
NAKANO
**** Don't distribute anyone except personal use only ****
(C) Copyright 2007 OAA/ComputingSection
write mail from CFAD0::NAKANO on 2007-10-21 01:29:17(JST).
C/2007 T1 (McNaught)
T 2007 Dec. 12.51532 TT Nakano
q 0.9690365 (2000.0) P Q
Peri. 233.70964 -0.13201890 -0.55015745
Node 111.42624 -0.34688870 +0.80488278
e 1.0 Incl. 117.65278 -0.92856838 -0.22246457
From 142 observations 2007 Oct. 9-16.
NAKANO
**** Don't distribute anyone except personal use only ****
(C) Copyright 2007 OAA/ComputingSection
write mail from CFAD0::NAKANO on 2007-10-18 07:23:28(JST).
◎C/2007 T1の軌道と予報位置です
宇都宮の鈴木雅之氏から10月13日の観測（H06）が報告されました．彗星は，
現在，11等級で眼視観測されていますが，間もなく，北半球から見えなくなり
ます．
C/2007 T1 (McNaught)
T 2007 Dec. 12.91113 TT Nakano
q 0.9441739 (2000.0) P Q
Peri. 235.71610 -0.13915080 -0.54366251
Node 111.76632 -0.31454720 +0.81680040
e 1.0 Incl. 116.97184 -0.93898728 -0.19304969
From 62 observations 2007 Oct. 9-13.
2007/ α (2000) δ △ ｒ Daily motion Elong. Phase m1 天文薄明終了時
19h JST h m ｡ , AU AU , ｡ ｡ ｡ 等 h｡ A ｡
Oct. 15 17 14.76 -13 46.3 1.615 1.373 40.4/190 57.8 37.9 10.9 +23.3 51.2
16 17 14.27 -14 26.1 1.624 1.361 39.8/190 56.7 37.7 10.9 +22.3 51.4
17 17 13.80 -15 05.3 1.634 1.350 39.3/189 55.6 37.5 10.9 +21.3 51.5
18 17 13.36 -15 44.1 1.643 1.338 38.8/189 54.5 37.3 10.8 +20.4 51.7
19 17 12.94 -16 22.5 1.653 1.327 38.3/189 53.4 37.1 10.8 +19.4 51.8
20 17 12.54 -17 00.4 1.662 1.316 37.9/188 52.3 36.8 10.8 +18.4 52.0
21 17 12.16 -17 37.8 1.671 1.304 37.4/188 51.2 36.5 10.8 +17.4 52.1
22 17 11.80 -18 14.9 1.681 1.293 37.0/187 50.2 36.2 10.7 +16.5 52.3
23 17 11.46 -18 51.6 1.690 1.282 36.6/187 49.1 35.9 10.7 +15.5 52.4
24 17 11.14 -19 27.9 1.698 1.271 36.2/187 48.1 35.6 10.7 +14.5 52.6
25 17 10.84 -20 03.8 1.707 1.260 35.8/186 47.0 35.3 10.7 +13.6 52.7
26 17 10.55 -20 39.4 1.715 1.249 35.4/186 46.0 34.9 10.6 +12.7 52.8
27 17 10.28 -21 14.6 1.724 1.239 35.1/186 45.0 34.5 10.6 +11.7 53.0
28 17 10.02 -21 49.5 1.732 1.228 34.8/186 43.9 34.1 10.6 +10.8 53.1
29 17 09.78 -22 24.1 1.740 1.218 34.4/185 42.9 33.7 10.6 +9.9 53.2
30 17 09.55 -22 58.4 1.748 1.207 34.1/185 41.9 33.3 10.5 +8.9 53.3
31 17 09.33 -23 32.4 1.755 1.197 33.9/185 40.9 32.9 10.5 +8.0 53.4
Nov. 1 17 09.13 -24 06.2 1.762 1.187 33.6/184 39.9 32.5 10.5 +7.1 53.6
2 17 08.93 -24 39.7 1.769 1.177 33.3/184 39.0 32.0 10.4 +6.2 53.7
3 17 08.75 -25 12.9 1.776 1.167 33.1/184 38.0 31.6 10.4 +5.2 53.8
4 17 08.58 -25 45.9 1.783 1.157 32.9/184 37.0 31.1 10.4 +4.3 53.9
5 17 08.42 -26 18.7 1.789 1.147 32.7/184 36.1 30.6 10.4 +3.4 54.0
6 17 08.26 -26 51.3 1.795 1.138 32.5/183 35.1 30.1 10.3 +2.5 54.1
7 17 08.11 -27 23.8 1.801 1.129 32.3/183 34.2 29.6 10.3 +1.6 54.2
8 17 07.98 -27 56.0 1.806 1.119 32.1/183 33.3 29.1 10.3 +0.7 54.3
9 17 07.84 -28 28.0 1.811 1.110 31.9/183 32.4 28.6 10.2 -0.2 54.4
10 17 07.72 -28 59.9 1.816 1.102 31.8/183 31.5 28.1 10.2 -1.1 54.5
11 17 07.60 -29 31.7 1.821 1.093 31.7/183 30.7 27.5 10.2 -2.1 54.5
12 17 07.48 -30 03.3 1.825 1.084 31.5/183 29.8 27.0 10.2 -3.0 54.6
13 17 07.37 -30 34.9 1.829 1.076 31.4/183 29.0 26.5 10.1 -3.9 54.7
14 17 07.26 -31 06.3 1.832 1.068 31.3/182 28.2 26.0 10.1 -4.8 54.8
15 17 07.15 -31 37.6 1.835 1.060 31.3/182 27.4 25.4 10.1 -5.7 54.8
16 17 07.05 -32 08.8 1.838 1.052 31.2/182 26.7 24.9 10.0 -6.6 54.9
17 17 06.95 -32 40.0 1.841 1.045 31.1/182 25.9 24.4 10.0 -7.5 54.9
18 17 06.85 -33 11.1 1.843 1.038 31.1/182 25.2 23.9 10.0 -8.4 55.0
19 17 06.76 -33 42.1 1.844 1.031 31.0/182 24.5 23.5 10.0 -9.4 55.0
20 17 06.66 -34 13.1 1.846 1.024 31.0/182 23.9 23.0 9.9 -10.3 55.1
21 17 06.56 -34 44.1 1.846 1.017 31.0/182 23.3 22.6 9.9 -11.2 55.1
22 17 06.46 -35 15.1 1.847 1.011 31.0/182 22.7 22.2 9.9 -12.1 55.1
23 17 06.37 -35 46.1 1.847 1.005 31.0/182 22.2 21.8 9.9 -13.0 55.1
24 17 06.27 -36 17.1 1.847 0.999 31.0/182 21.7 21.5 9.8 -13.9 55.1
25 17 06.17 -36 48.1 1.846 0.993 31.1/182 21.3 21.1 9.8 -14.9 55.1
26 17 06.07 -37 19.1 1.845 0.988 31.1/182 20.9 20.9 9.8 -15.8 55.1
27 17 05.97 -37 50.2 1.844 0.983 31.2/182 20.6 20.7 9.8 -16.7 55.1
28 17 05.86 -38 21.3 1.842 0.978 31.2/182 20.3 20.5 9.7 -17.6 55.0
29 17 05.76 -38 52.5 1.839 0.974 31.3/182 20.1 20.4 9.7 -18.6 55.0
30 17 05.65 -39 23.8 1.837 0.970 31.4/182 19.9 20.3 9.7 -19.5 54.9
Dec. 1 17 05.54 -39 55.1 1.833 0.966 31.5/182 19.8 20.3 9.7 -20.4 54.9
m1 = 8.5 + 5 log △ + 10.0 log ｒ
NAKANO
**** Don't distribute anyone except personal use only ****
(C) Copyright 2007 OAA/ComputingSection
write mail from CFAD0::NAKANO on 2007-10-14 03:22:45(JST).
戻ります。