C/1999 S2 (McNaught-Watson)
Epoch 1997 Nov. 8.0 TT = JDT 2450760.5
T 1997 Nov. 22.52078 TT Nakano
q 6.4665953 (2000.0) P Q
z -0.0011179 Peri. 223.47565 +0.07674086 +0.47111542
+/-0.0000051 Node 74.42730 -0.46111765 +0.79817901
e 1.0072289 Incl. 65.81310 -0.88401434 -0.37544711
From 83 observations 1999 Sept.19-2002 Feb. 16, mean residual 0".66.
(1/a)org.= +0.000050, (1/a)fut.= -0.000328 (+/-0.000005), Q= 8.
Residuals in seconds of arc
1999/ 991002 834 (2.4+ 0.7-) 000205 428 0.3- 0.8+
990919 413 1.4- 1.5- 991004 834 1.6- 1.1- 000205 428 (0.4- 2.1+)
990919 413 0.4- 1.2+ 991004 834 1.0+ 0.1+ 000228 413 0.3+ 0.2+
990921 413 0.1- 0.1- 991004 428 0.4+ 1.0+ 000228 413 0.1+ 0.3-
990921 413 0.1- 0.0 991004 428 1.1+ 0.5+ 000228 413 0.7+ 0.2-
990921 413 0.2- 0.0 991005 413 0.1- 0.1+ 000305 474 0.8- 0.8+
990921 413 0.2- 0.0 991005 413 0.1- 0.4+ 000305 474 0.3+ 0.7+
990921 428 0.3- 0.5+ 991005 413 0.0 0.2+ 000305 474 0.0 0.0
990921 428 0.0 0.6- 991011 428 0.3- 1.0+ 000727 474 0.5- 1.1-
990922 467 1.1+ 0.5- 991011 428 0.4+ 0.6- 000727 474 0.7- 0.3-
990922 467 0.8- 0.1- 991015 467 0.7+ 1.2- 001027 428 0.3+ 0.0
990922 467 1.1+ 0.6- 991015 467 0.3- 1.0- 001027 428 0.4- 0.4+
990922 467 0.3+ 0.5+ 991015 467 0.9- 0.1+ 001222 428 0.3+ 0.6-
990923 467 (1.0- 2.0+) 991015 413 0.2+ 0.1- 001222 428 0.0 0.1-
990923 467 0.6+ 0.8+ 991015 413 0.4+ 0.3+ 2001/
990923 467 1.7+ 0.9+ 991016 413 0.0 0.1+ 010129 320 0.7+ 0.2+
990923 428 0.2- 0.1+ 991016 413 0.0 0.2+ 010129 320 0.1+ 1.7+
990923 428 0.5- 0.1- 991016 413 0.0 0.3+ 010129 320 (1.6+ 4.4+)
990923 428 0.3- 0.3- 991017 413 0.1+ 0.4+ 010130 320 (2.5+ 2.2-)
990924 428 0.4+ 0.4+ 991017 413 0.0 0.2+ 010130 320 (1.7+ 6.2+)
990924 428 0.8+ 0.5+ 991019 428 0.6- 0.1- 010619 320 (3.4+ 2.6-)
990924 428 0.3+ 0.0 991019 428 0.1+ 0.4- 010619 320 0.8+ 1.8-
990927 834 0.1- 1.5- 991107 428 0.6- 0.4+ 010619 320 (2.5- 2.5-)
990927 834 0.9- 0.0 991110 322 (0.5- 3.4-) 010619 320 (4.9+ 8.7-)
990927 834 0.1- 0.1+ 991110 322 (2.5+ 3.1-) 011014 360 0.7+ 1.6-
990927 834 0.5+ 1.7+ 991110 474 0.1- 0.9- 011014 360 0.9- 1.6-
990928 413 0.1- 0.2- 991110 474 0.7- 1.1- 011014 360 (1.2+ 2.4-)
990928 413 0.0 0.2- 991110 474 0.5- 0.6- 011215 474 0.1+ 1.0+
990928 413 0.2- 0.4- 991115 474 0.1+ 0.5- 011215 474 0.8- 0.5-
990928 413 0.6- 0.5- 991115 474 0.2- 1.0- 011215 474 0.1+ 0.6+
990930 834 0.0 1.3+ 991122 322 (0.2+ 4.2-) 011215 474 0.6- 1.1+
990930 428 0.1+ 1.0+ 991122 322 (1.3- 2.1-) 2002/
990930 428 0.4+ 0.1+ 991205 428 (3.2+ 0.3-) 020216 474 0.7+ 0.6+
991002 834 0.2+ 0.3- 2000/ 020216 474 0.3+ 0.9+
NAKANO
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(C) Copyright 2008 OAA/ComputingSection
write mail from CFAD0::NAKANO on 2008-09-07 23:13:40(JST).
C/1999 S2 (McNaught-Watson)
Epoch 1997 Nov. 8.0 TT = JDT 2450760.5
T 1997 Nov. 22.50662 TT Nakano
q 6.4662502 (2000.0) P Q
z -0.0011232 Peri. 223.47130 +0.07671562 +0.47111611
+/-0.0000054 Node 74.42796 -0.46117812 +0.79814829
e 1.0072626 Incl. 65.81295 -0.88398499 -0.37551154
From 79 observations 1999 Sept. 19-2001 Oct. 14, mean residual 0".65.
NAKANO
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(C) Copyright 2001 OAA/ComputingSection
write mail from CFAD0::NAKANO on 2001-10-29 22:52:42(JST).
◎C/1999 S2の軌道と予報位置です
久万の中村彰正氏は，10月14日に南天から上がってきたこの彗星の観測に
成功しました．氏の CCD全光度は18.7等でした．
C/1999 S2 (McNaught-Watson)
Epoch 1997 Nov. 8.0 TT = JDT 2450760.5
T 1997 Nov. 22.50662 TT Nakano
q 6.4662502 (2000.0) P Q
z -0.0011232 Peri. 223.47130 +0.07671562 +0.47111611
+/-0.0000054 Node 74.42796 -0.46117812 +0.79814829
e 1.0072626 Incl. 65.81295 -0.88398499 -0.37551154
From 79 observations 1999 Sept. 19-2001 Oct. 14, mean residual 0".65.
Date/ TT R.A.(2000) Decl. Delta r Daily motion Mag. Moon Age
h h m ｡ , , / PA ｡ m1 ｡
2001 Oct. 30 18 03 54.69 -34 05.7 10.591 11.215 4.6 / 263 18.1 52 .98
31 18 03 54.32 -34 06.2 10.594 11.220 4.7 / 264 18.1 49 1.00
Nov. 1 18 03 53.95 -34 06.7 10.598 11.225 4.7 / 265 18.1 49 1.00
2 18 03 53.57 -34 07.1 10.601 11.229 4.7 / 266 18.1 51 .98
3 18 03 53.20 -34 07.4 10.605 11.234 4.7 / 267 18.1 56 .93
4 18 03 52.81 -34 07.7 10.609 11.239 4.8 / 268 18.1 62 .87
5 18 03 52.43 -34 07.8 10.614 11.244 4.8 / 269 18.1 70 .79
6 18 03 52.05 -34 07.9 10.618 11.248 4.8 / 270 18.1 78 .69
7 18 03 51.66 -34 07.9 10.623 11.253 4.8 / 271 18.1 87 .59
8 18 03 51.27 -34 07.9 10.628 11.258 4.8 / 272 18.1 97 .47
9 18 03 50.88 -34 07.8 10.633 11.263 4.9 / 273 18.1 106 .36
10 18 03 50.49 -34 07.5 10.639 11.267 4.9 / 273 18.2 115 .25
11 18 03 50.10 -34 07.2 10.644 11.272 4.9 / 274 18.2 122 .16
12 18 03 49.71 -34 06.9 10.650 11.277 4.9 / 275 18.2 128 .08
13 18 03 49.31 -34 06.4 10.656 11.282 4.9 / 276 18.2 131 .03
14 18 03 48.92 -34 05.9 10.662 11.286 4.9 / 277 18.2 131 .00
15 18 03 48.52 -34 05.2 10.669 11.291 5.0 / 278 18.2 128 .00
16 18 03 48.13 -34 04.5 10.675 11.296 5.0 / 279 18.2 123 .03
17 18 03 47.73 -34 03.8 10.682 11.301 5.0 / 280 18.2 116 .07
18 18 03 47.34 -34 02.9 10.689 11.305 5.0 / 281 18.2 109 .13
19 18 03 46.94 -34 02.0 10.696 11.310 5.0 / 282 18.2 101 .21
20 18 03 46.55 -34 00.9 10.704 11.315 5.0 / 283 18.2 92 .29
21 18 03 46.16 -33 59.8 10.711 11.320 5.0 / 284 18.2 84 .38
22 18 03 45.77 -33 58.6 10.719 11.324 5.0 / 285 18.2 77 .48
23 18 03 45.37 -33 57.4 10.727 11.329 5.0 / 286 18.2 69 .57
24 18 03 44.98 -33 56.0 10.735 11.334 5.0 / 287 18.2 62 .66
25 18 03 44.60 -33 54.6 10.744 11.338 5.1 / 287 18.2 56 .75
26 18 03 44.21 -33 53.0 10.752 11.343 5.1 / 288 18.2 51 .83
27 18 03 43.82 -33 51.4 10.761 11.348 5.1 / 289 18.2 48 .90
28 18 03 43.44 -33 49.8 10.770 11.353 5.1 / 290 18.2 48 .95
29 18 03 43.06 -33 48.0 10.779 11.357 5.1 / 291 18.2 50 .99
30 18 03 42.68 -33 46.2 10.788 11.362 5.1 / 292 18.2 54 1.00
Dec. 1 18 03 42.30 -33 44.2 10.798 11.367 5.1 / 293 18.2 61 .99
NAKANO
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(C) Copyright 2001 OAA/ComputingSection
write mail from CFAD0::NAKANO on 2001-10-29 18:07:38(JST).
C/1999 S2 (McNaught-Watson)
Epoch 1997 Nov. 8.0 TT = JDT 2450760.5
T 1997 Nov. 22.50733 TT Nakano
q 6.4662003 (2000.0) P Q
z -0.0011284 Peri. 223.47082 +0.07670567 +0.47112044
+/-0.0000111 Node 74.42755 -0.46118502 +0.79814159
e 1.0072963 Incl. 65.81300 -0.88398225 -0.37552036
From 71 observations 1999 Sept. 19-2000 Oct. 27, mean residual 0".63.
NAKANO
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(C) Copyright 2000 OAA/ComputingSection
write mail from CFAD0::NAKANO on 2000-12-24 02:39:41(JST).
MPECでは，放物線が出されていますが，あの時期からすでに放物線には
フィットしていません．
C/1999 S2 (McNaught-Watson)
T 1997 Nov. 24.68494 TT Nakano
q 6.5018287 (2000.0) P Q
z +0.0004793 Peri. 224.00871 +0.08027303 +0.47073419
+/-0.0010807 Node 74.37644 -0.45366473 +0.80212660
e 0.9968838 Incl. 65.82856 -0.88754975 -0.36742649
From 47 observations 1999 Sept. 19-Oct. 15.
NAKANO
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(C) Copyright 1999 OAA/ComputingSection
write mail from CFAD0::NAKANO on 1999-10-20 03:04:20(JST).
まだ，北半球からは観測できません．彗星は，周期が1000年ほどの楕円
上を動いています．
C/1999 S2 (McNaught-Watson)
T 1997 Dec. 29.09680 TT Nakano
q 6.7487763 (2000.0) P Q
Peri. 228.67620 +0.11438445 +0.46620722
Node 74.06258 -0.38747877 +0.83404389
e 0.9331820 Incl. 65.82756 -0.91475483 -0.29499428
From 31 observations 1999 Sept. 19-30.
NAKANO
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(C) Copyright 1999 OAA/ComputingSection
write mail from CFAD0::NAKANO on 1999-10-05 03:43:16(JST).
C/1999 S2 (McNaught-Watson)
T 2001 May 16.18937 TT Nakano
q 6.9165224 (2000.0) P Q
Peri. 317.72019 +0.52845197 -0.02170729
Node 67.89029 +0.78086283 +0.40472474
e 1.0 Incl. 66.35490 -0.33315425 +0.91418088
From 20 observations 1999 Sept.19-24.
NAKANO
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(C) Copyright 1999 OAA/ComputingSection
write mail from CFAD0::NAKANO on 1999-09-28 01:08:24(JST).
戻ります。