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- From: j.jahn@abbs.hanse.de (Jost Jahn)
- Newsgroups: sci.astro
- Subject: Comets daily 1993 Jan. 18 - 25.
- Reply-To: j.jahn@abbs.hanse.de
- Message-ID: <F/r06Nzf0+@ABBS.zer.sub.org>
- Date: 01 Jan 93 18:30:00 MET
- Distribution: world
- Organization: ABBS AstroMail, D-W 2121 Dahlenburg / Germany
- X-Version: ZerUU V6.45c
- Lines: 208
-
- Message-Id: <25913034656@amterm1.abbs.hanse.de>
- Daily comet ephemerides for the period: Monday, 1993 Jan. 18 - 25, 0 h UT
- (Universal Time). Due to e-mail problems the posting of the five different
- ephemerides has to be made on three days. All known comets are included in the
- list which meet the following criteria: the minimum elongation to the sun has
- to exceeds 15 degrees, the minimum distance to the earth has to be lower than
- 0.15 astronomical units (A.U.) and the limiting magnitude of the comet is
- brighter than 15.5 mag.
-
- Please note, that magnitude predictions for comets tend to be very inaccurate,
- thus comets may actually be fainter or brighter than given! Also remember that
- comets are diffuse objects. Thus, a comet with a magnitude of 12 mag may be
- only observable if the faintest stars visible in your telescope are 14 mag or
- fainter. Try first low power for very diffuse comets and than switch to high
- powers for more condensated ones. Comet filter may increase comet visibility in
- many but not in all cases.
-
- The position are given for 1950.0 and 2000.0. The elements of the orbits are
- from the latest MPC or from a more recent IAUC. A list of the used elements is
- given at the end of the ephemerides.
-
- Name of the comet Rect(1950)Decl Rect(2000)Decl r d Elo Magn MotioPos
- [P/] Name [Pro/Fin] h m o ' h m o ' A.U. A.U. o Step "/h o
- ----------------------------- Monday, 1993 Jan. 18 ----------------------------
- Helin-Lawrenc (1991l) 23:20.0 +16:26 23:22.5 +16:42 4.57 4.95 62 14.8 16.3/ 55
- Tanaka-Machho (1992d) 8:12.7 +27:23 8:15.8 +27:14 3.73 2.76 172 12.4 55.6/258
- P/Brewington (1992p) 9:10.5 +34:23 9:13.5 +34:11 2.77 1.83 159 12.2 38.3/272
- Shoemaker-Le (1991a1) 9:27.3 -70:19 9:27.9 -70:32 2.87 2.74 88 12.9 87.4/270
- P/Schuster (1992n) 8:15.4 +54:43 8:19.3 +54:33 2.05 1.16 146 15.0 31.6/283
- P/Giclas (1992l) 3:59.3 +15:15 4:02.1 +15:23 2.15 1.44 123 15.3 28.5/ 48
- Ohshita (1992a1) 18:36 +76:36 18:34 +76:39 1.59 1.12 98 14.8 177/ 70
- P/Ciffreo (1992s) 0:54.3 + 4:36 0:56.9 + 4:52 1.71 1.64 77 14.6 91.1/ 55
- P/Howell (1992c) 18:31.5 -24:29 18:34.6 -24:27 1.47 2.35 20 12.4 124/ 89
- P/Schaumasse (1992x) 3:29.0 +27:28 3:32.0 +27:38 1.34 0.55 119 9.3 58.3/ 10
- P/Forbes 17:42.3 -28:12 17:45.4 -28:13 1.56 2.31 32 13.7 119/ 91
- Helin-Lawrenc (1992q) 23:07.9 -53:53 23:10.8 -53:37 2.14 2.66 49 13.9 15.0/114
- Shoemaker (1992y) 1:41.4 +45:35 1:44.5 +45:50 2.43 2.03 102 14.4 26.5/315
- P/Vaeisaelae 1 (1992u) 9:55.8 +12:08 9:58.5 +11:54 2.05 1.14 150 15.0 21.5/ 12
- ---------------------------- Tuesday, 1993 Jan. 19 ----------------------------
- Helin-Lawrenc (1991l) 23:20.3 +16:30 23:22.8 +16:46 4.58 4.97 61 14.8 16.8/ 53
- Tanaka-Machho (1992d) 8:11.1 +27:18 8:14.1 +27:09 3.74 2.76 173 12.4 55.3/258
- P/Brewington (1992p) 9:09.2 +34:23 9:12.3 +34:11 2.78 1.83 160 12.3 38.5/271
- Shoemaker-Le (1991a1) 9:21.1 -70:20 9:21.7 -70:33 2.88 2.74 88 12.9 74.6/267
- P/Schuster (1992n) 8:14.0 +54:45 8:17.9 +54:36 2.06 1.17 146 15.0 31.1/280
- P/Giclas (1992l) 3:59.9 +15:22 4:02.7 +15:30 2.15 1.46 123 15.3 29.2/ 49
- Ohshita (1992a1) 18:55 +76:56 18:53 +77:00 1.60 1.14 98 14.8 170/ 74
- P/Ciffreo (1992s) 0:56.3 + 4:57 0:58.9 + 5:13 1.71 1.65 77 14.6 91.5/ 55
- P/Howell (1992c) 18:35.2 -24:28 18:38.2 -24:25 1.47 2.35 20 12.4 124/ 88
- P/Schaumasse (1992x) 3:29.3 +27:51 3:32.3 +28:01 1.33 0.55 118 9.3 59.2/ 12
- P/Forbes 17:45.9 -28:13 17:49.0 -28:14 1.56 2.31 32 13.7 119/ 91
- Helin-Lawrenc (1992q) 23:08.6 -53:55 23:11.4 -53:39 2.14 2.66 49 13.9 15.6/114
- Shoemaker (1992y) 1:40.7 +45:42 1:43.8 +45:57 2.43 2.04 101 14.4 25.7/317
- P/Vaeisaelae 1 (1992u) 9:55.9 +12:17 9:58.6 +12:03 2.05 1.13 151 14.9 22.1/ 9
- --------------------------- Wednesday, 1993 Jan. 20 ---------------------------
- Helin-Lawrenc (1991l) 23:20.7 +16:34 23:23.2 +16:50 4.59 4.99 60 14.8 16.8/ 56
- Tanaka-Machho (1992d) 8:09.5 +27:14 8:12.5 +27:05 3.75 2.77 173 12.4 55.0/258
- P/Brewington (1992p) 9:08.0 +34:24 9:11.0 +34:11 2.78 1.84 160 12.3 38.7/271
- Shoemaker-Le (1991a1) 9:15.0 -70:21 9:15.5 -70:33 2.89 2.75 89 12.9 74.7/269
- P/Schuster (1992n) 8:12.6 +54:47 8:16.5 +54:38 2.06 1.17 145 15.1 30.6/278
- P/Giclas (1992l) 4:00.5 +15:30 4:03.4 +15:38 2.16 1.47 122 15.3 29.9/ 50
- Ohshita (1992a1) 19:15 +77:11 19:13 +77:16 1.62 1.16 98 14.9 164/ 78
- P/Ciffreo (1992s) 0:58.3 + 5:18 1:00.9 + 5:34 1.71 1.65 76 14.6 91.8/ 55
- P/Howell (1992c) 18:38.8 -24:26 18:41.9 -24:24 1.46 2.34 21 12.3 125/ 88
- P/Schaumasse (1992x) 3:29.7 +28:14 3:32.8 +28:24 1.33 0.54 117 9.2 60.3/ 15
- P/Forbes 17:49.5 -28:14 17:52.6 -28:15 1.56 2.30 32 13.7 119/ 91
- Helin-Lawrenc (1992q) 23:09.2 -53:58 23:12.1 -53:42 2.14 2.66 48 13.9 16.3/114
- Shoemaker (1992y) 1:40.1 +45:50 1:43.1 +46:05 2.43 2.05 100 14.4 25.0/319
- P/Vaeisaelae 1 (1992u) 9:56.0 +12:26 9:58.7 +12:12 2.04 1.12 153 14.9 22.7/ 7
- ---------------------------- Thursday, 1993 Jan. 21 ---------------------------
- Helin-Lawrenc (1991l) 23:21.1 +16:38 23:23.6 +16:54 4.60 5.02 60 14.8 17.2/ 54
- Tanaka-Machho (1992d) 8:07.9 +27:09 8:10.9 +26:60 3.76 2.79 173 12.4 54.6/257
- P/Brewington (1992p) 9:06.7 +34:24 9:09.8 +34:11 2.79 1.84 161 12.3 38.8/270
- Shoemaker-Le (1991a1) 9:08.9 -70:20 9:09.4 -70:33 2.91 2.75 89 12.9 74.6/271
- P/Schuster (1992n) 8:11.2 +54:48 8:15.1 +54:39 2.07 1.18 145 15.1 30.1/276
- P/Giclas (1992l) 4:01.2 +15:37 4:04.0 +15:46 2.16 1.48 121 15.4 30.6/ 52
- Ohshita (1992a1) 19:34 +77:20 19:32 +77:27 1.63 1.18 98 15.0 158/ 82
- P/Ciffreo (1992s) 1:00.3 + 5:39 1:02.9 + 5:55 1.71 1.66 76 14.6 92.3/ 55
- P/Howell (1992c) 18:42.4 -24:25 18:45.5 -24:22 1.46 2.34 21 12.3 125/ 87
- P/Schaumasse (1992x) 3:30.2 +28:38 3:33.3 +28:48 1.32 0.54 117 9.2 61.4/ 17
- P/Forbes 17:53.1 -28:15 17:56.2 -28:15 1.55 2.29 32 13.7 119/ 90
- Helin-Lawrenc (1992q) 23:09.9 -54:01 23:12.8 -53:44 2.13 2.66 48 13.9 17.0/114
- Shoemaker (1992y) 1:39.5 +45:57 1:42.5 +46:12 2.42 2.06 99 14.4 24.3/322
- P/Vaeisaelae 1 (1992u) 9:56.0 +12:35 9:58.7 +12:21 2.04 1.11 154 14.9 23.3/ 4
- ----------------------------- Friday, 1993 Jan. 22 ----------------------------
- Helin-Lawrenc (1991l) 23:21.5 +16:42 23:24.0 +16:58 4.61 5.04 59 14.8 17.5/ 55
- Tanaka-Machho (1992d) 8:06.3 +27:04 8:09.3 +26:55 3.77 2.80 173 12.4 54.2/257
- P/Brewington (1992p) 9:05.5 +34:23 9:08.5 +34:11 2.80 1.85 162 12.3 38.9/269
- Shoemaker-Le (1991a1) 9:02.8 -70:19 9:03.2 -70:31 2.92 2.76 89 12.9 74.6/274
- P/Schuster (1992n) 8:09.8 +54:49 8:13.7 +54:40 2.07 1.19 145 15.1 29.6/273
- P/Giclas (1992l) 4:01.8 +15:45 4:04.7 +15:53 2.16 1.50 120 15.4 31.3/ 53
- Ohshita (1992a1) 19:53 +77:25 19:51 +77:33 1.65 1.20 97 15.1 153/ 86
- P/Ciffreo (1992s) 1:02.4 + 6:00 1:05.0 + 6:16 1.71 1.67 75 14.6 92.6/ 55
- P/Howell (1992c) 18:46.1 -24:23 18:49.2 -24:19 1.46 2.33 21 12.3 125/ 87
- P/Schaumasse (1992x) 3:30.8 +29:01 3:33.9 +29:12 1.32 0.54 116 9.1 62.6/ 19
- P/Forbes 17:56.7 -28:15 17:59.9 -28:15 1.55 2.29 32 13.6 120/ 90
- Helin-Lawrenc (1992q) 23:10.6 -54:04 23:13.5 -53:47 2.13 2.66 48 13.9 17.6/114
- Shoemaker (1992y) 1:38.9 +46:05 1:42.0 +46:20 2.42 2.07 98 14.4 23.7/324
- P/Vaeisaelae 1 (1992u) 9:56.1 +12:45 9:58.8 +12:30 2.03 1.10 155 14.8 24.0/ 2
- ---------------------------- Saturday, 1993 Jan. 23 ---------------------------
- Helin-Lawrenc (1991l) 23:21.9 +16:46 23:24.4 +17:02 4.62 5.06 58 14.8 17.7/ 56
- Tanaka-Machho (1992d) 8:04.7 +26:59 8:07.8 +26:50 3.78 2.81 172 12.4 53.7/257
- P/Brewington (1992p) 9:04.2 +34:23 9:07.3 +34:11 2.81 1.85 162 12.3 39.0/269
- Shoemaker-Le (1991a1) 8:56.8 -70:16 8:57.1 -70:28 2.93 2.76 90 12.9 86.9/280
- P/Schuster (1992n) 8:08.5 +54:49 8:12.3 +54:40 2.08 1.20 145 15.2 29.2/271
- P/Giclas (1992l) 4:02.5 +15:53 4:05.4 +16:01 2.17 1.51 119 15.4 31.9/ 54
- Ohshita (1992a1) 20:11 +77:26 20:10 +77:35 1.66 1.22 97 15.1 147/ 90
- P/Ciffreo (1992s) 1:04.4 + 6:21 1:07.0 + 6:37 1.71 1.68 75 14.6 92.9/ 56
- P/Howell (1992c) 18:49.8 -24:20 18:52.8 -24:16 1.46 2.33 21 12.3 125/ 87
- P/Schaumasse (1992x) 3:31.5 +29:25 3:34.5 +29:35 1.31 0.54 115 9.1 63.9/ 21
- P/Forbes 18:00.3 -28:15 18:03.5 -28:15 1.54 2.28 33 13.6 120/ 89
- Helin-Lawrenc (1992q) 23:11.4 -54:06 23:14.2 -53:50 2.13 2.66 48 13.9 18.3/114
- Shoemaker (1992y) 1:38.4 +46:13 1:41.5 +46:28 2.42 2.08 97 14.4 23.2/327
- P/Vaeisaelae 1 (1992u) 9:56.1 +12:54 9:58.8 +12:40 2.03 1.09 156 14.8 24.7/ 0
- ----------------------------- Sunday, 1993 Jan. 24 ----------------------------
- Helin-Lawrenc (1991l) 23:22.3 +16:50 23:24.8 +17:07 4.63 5.09 57 14.8 18.1/ 54
- Tanaka-Machho (1992d) 8:03.2 +26:54 8:06.2 +26:45 3.79 2.82 171 12.5 53.3/257
- P/Brewington (1992p) 9:02.9 +34:23 9:06.0 +34:11 2.81 1.86 163 12.3 39.0/268
- Shoemaker-Le (1991a1) 8:50.7 -70:12 8:51.0 -70:23 2.94 2.77 90 13.0 74.5/278
- P/Schuster (1992n) 8:07.1 +54:49 8:11.0 +54:40 2.09 1.21 144 15.2 28.7/268
- P/Giclas (1992l) 4:03.3 +16:00 4:06.1 +16:08 2.17 1.52 118 15.5 32.6/ 55
- Ohshita (1992a1) 20:29 +77:22 20:27 +77:32 1.68 1.25 97 15.2 142/ 94
- P/Ciffreo (1992s) 1:06.5 + 6:42 1:09.1 + 6:58 1.71 1.68 74 14.6 93.1/ 56
- P/Howell (1992c) 18:53.4 -24:17 18:56.5 -24:13 1.45 2.33 21 12.3 125/ 86
- P/Schaumasse (1992x) 3:32.2 +29:49 3:35.3 +29:59 1.31 0.54 114 9.0 65.2/ 23
- P/Forbes 18:04.0 -28:15 18:07.1 -28:15 1.54 2.27 33 13.6 120/ 89
- Helin-Lawrenc (1992q) 23:12.1 -54:09 23:15.0 -53:53 2.12 2.66 47 13.9 18.9/114
- Shoemaker (1992y) 1:37.9 +46:21 1:41.0 +46:36 2.41 2.09 97 14.4 22.7/330
- P/Vaeisaelae 1 (1992u) 9:56.1 +13:04 9:58.8 +12:50 2.02 1.08 157 14.8 25.4/358
- ----------------------------- Monday, 1993 Jan. 25 ----------------------------
- Helin-Lawrenc (1991l) 23:22.7 +16:54 23:25.2 +17:11 4.63 5.11 56 14.8 18.3/ 55
- Tanaka-Machho (1992d) 8:01.6 +26:49 8:04.7 +26:40 3.80 2.83 170 12.5 52.8/256
- P/Brewington (1992p) 9:01.7 +34:22 9:04.8 +34:10 2.82 1.86 163 12.4 39.0/267
- Shoemaker-Le (1991a1) 8:44.7 -70:07 8:45.0 -70:18 2.95 2.77 91 13.0 74.3/280
- P/Schuster (1992n) 8:05.8 +54:48 8:09.7 +54:40 2.09 1.21 144 15.2 28.2/265
- Ohshita (1992a1) 20:46 +77:16 20:45 +77:27 1.69 1.27 96 15.3 137/ 97
- P/Ciffreo (1992s) 1:08.5 + 7:03 1:11.1 + 7:19 1.71 1.69 74 14.6 93.4/ 56
- P/Howell (1992c) 18:57.1 -24:14 19:00.1 -24:10 1.45 2.32 21 12.3 126/ 86
- P/Schaumasse (1992x) 3:33.0 +30:13 3:36.1 +30:23 1.30 0.54 113 9.0 66.6/ 25
- P/Forbes 18:07.6 -28:14 18:10.8 -28:14 1.54 2.27 33 13.6 120/ 89
- Helin-Lawrenc (1992q) 23:12.9 -54:13 23:15.8 -53:56 2.12 2.66 47 13.9 19.6/114
- Shoemaker (1992y) 1:37.5 +46:28 1:40.6 +46:44 2.41 2.10 96 14.4 22.4/333
- P/Vaeisaelae 1 (1992u) 9:56.0 +13:15 9:58.7 +13:00 2.02 1.07 158 14.7 26.1/356
-
-
- Used orbital elements (2000.0).
- Name of comet Perihel. T Perih.q Eccentr Perihel Node Inclin H G
- [P/] Name [Pr/Fi] Ye Mo Day A.U. e Degrees Degrees Degrees Magn -
- -------------------------------------------------------------------------------
- Helin-Law (1991l) 92 01 20.027 1.51772 1.00044 271.159 11.835 95.456 11.3 0.0
- Tanaka-Ma (1992d) 92 04 22.688 1.26148 0.99589 65.473 300.508 79.293 6.3 2.7
- P/Brewing (1992p) 92 06 07.859 1.60165 0.67150 47.879 343.750 18.057 6.5 4.0
- Shoemake (1991a1) 92 07 24.507 0.83625 0.99986 145.240 49.051 113.498 8.4 2.0
- P/Schuste (1992n) 92 09 06.422 1.53924 0.58952 355.733 50.602 20.134 10.0 6.0
- P/Giclas (1992l) 92 09 13.092 1.84679 0.49321 276.486 112.526 7.284 9.5 6.0
- Ohshita (1992a1) 92 11 01.562 0.66357 0.99054 309.979 138.352 115.114 12.5 4.0
- P/Ciffreo (1992s) 93 01 23.065 1.70877 0.54317 358.034 53.709 13.089 10.0 6.0
- P/Howell (1992c) 93 02 26.096 1.40914 0.55206 234.757 57.744 4.400 8.0 6.0
- P/Schauma (1992x) 93 03 03.961 1.20216 0.70485 57.482 81.053 11.846 7.3 11
- P/Forbes 93 03 14.632 1.44684 0.56805 310.537 334.456 7.159 9.0 6.0
- Helin-Law (1992q) 93 03 15.122 2.03839 0.96521 268.857 194.666 106.846 8.5 4.0
- Shoemaker (1992y) 93 03 25.663 2.31384 1.00000 54.859 55.300 65.994 9.0 4.0
- P/Vaeisaelae (1992u) 93 04 29.175 1.78302 0.63471 47.385 135.077 11.596 10.0 6.0
-
- The name is the same as in the ephemerides, but a littlebit shorter. 'Perihel.
- T' is the perihelion date as year, month and day. 'Perih.q' is the perihelion
- distance q in astronomical units. 'Eccentr e' is the eccentricity of the orbit.
- 'Perihel', 'Node' and 'Inclin.' are these three orbit angles in degrees. H is
- the magnitude of the object in 1 A.U. from the sun and the earth, G is the
- factor in the calculation of the objects brightness V = H + 5*log(d) +
- 2.5*G*log(r). These orbital element list is only for an overview, which orbit I
- used. For well-known objects the accuracy of the published original elements
- may be some digits better than given here.
-
-
- Explanations of the columns in the ephemerides:
- Name of object The name of the object. A [P/] before the name of the object
- means a periodic comet with a period around the sun of lower
- than 200 years. If the comet have received a final [Fin]
- designation, it's the name of the year with a roman number in
- bracketts. If it's a provisional designation [Pro] the number
- of the year is following by a lower letter, also in
- bracketts. For more than 26 comets in a year, a running
- number is in the appendix.
- Rect(1950)Decl The rectascension in hours and time minutes and the
- declination in degrees and arc minutes for 1950.0.
- Rect(2000)Decl The rectascension in hours and time minutes and the
- declination in degrees and arc minutes for 2000.0.
- r The distance of the comet to the sun in A.U.
- d The distance of the comet to the earth in A.U.
- Elo The elongation of the comet to the sun in degrees.
- Magn The magnitude of the comet in magnitude steps.
- MotioPos The motion of the comet in arc seconds/hour and the position
- angle of the motion (from north, over east, south and west
- back to north, 0..360 degrees).
-
- These ephemerides should promote the observing of comets.
-
- These ephemerides were computed by a program of Jost Jahn with an Atari ST
- computer.
-
- --
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