121P

⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2008-08-22 (JD 2454700.5)
Eccentricity (e)0.2040294259 ± 1.03e-07
Semi-major axis (a)4.5185643776 AU ± 2.34e-07
Inclination (i)20.72515328° ± 1.00e-05
Long. of Asc. Node (Ω)95.96491567° ± 1.78e-05
Arg. of Perihelion (ω)18.01565461° ± 2.79e-05
Mean Anomaly (M)167.88552122° ± 4.30e-05
Mean Motion (n)0.1026132310°/day ± 7.96e-09
Perihelion dist (q)3.59664428 AU ± 5.01e-07
Aphelion dist (Q)5.44048447 AU ± 5.44e-07
Orbital Period9.60525532 yr ± 7.45e-07
Orbit Solution
SourceJPL
Solution Date2026-05-22 14:12:30
RMS Residual0.623″
Uncertainty0
Orbit TypeJupiter-family Comet
MOID2.620150 AU
Observations Used772
Oppositions
Arc Total1989-2026
First Observation Used
Last Observation Used2026-05-13
Observations (798)
Date Type RA Dec Mag Band Observatory
1989-03-04 21:20:00 A 10 51 13.45 +31 19 16.6 026
1989-03-09 08:04:59 A 10 48 09.64 +31 39 06.5 675
1989-03-09 08:51:14 A 10 48 08.31 +31 39 15.5 675
1989-03-10 03:11:49 A 10 47 37.75 +31 42 09.3 801
1989-03-10 05:28:59 A 10 47 34.20 +31 42 26.9 675
1989-03-10 05:59:09 A 10 47 32.91 +31 42 35.0 801
1989-03-11 01:30:30 A 10 47 00.57 +31 45 28.6 010
1989-03-11 04:24:57 A 10 46 56.04 +31 45 53.4 801
1989-03-11 13:25:09 A 10 46 41.41 +31 47 06.5 887
1989-03-11 13:39:19 A 10 46 40.90 +31 47 09.4 887
1989-03-11 13:52:00 A 10 46 40.44 +31 47 11.6 372
1989-03-11 13:52:50 A 10 46 40.57 +31 47 11.0 887
1989-03-11 14:05:15 A 10 46 40.28 +31 47 12.6 405
1989-03-11 14:06:59 A 10 46 40.15 +31 47 13.4 887
1989-03-11 14:08:30 A 10 46 40.00 +31 47 14.4 372
1989-03-11 14:17:59 A 10 46 40.01 +31 47 13.5 405
1989-03-11 14:28:59 A 10 46 39.68 +31 47 15.9 405
1989-03-11 14:40:30 A 10 46 39.35 +31 47 24.5 402
1989-03-11 14:59:29 A 10 46 38.68 +31 47 28.3 402
1989-03-11 18:50:30 A 10 46 32.14 +31 47 45.4 391
1989-03-11 19:03:59 A 10 46 31.75 +31 47 45.0 391
1989-03-12 14:57:08 A 10 45 59.88 +31 50 32.2 413
1989-03-14 13:12:00 A 10 44 47.10 +31 55 51.4 892
1989-03-14 13:30:59 A 10 44 46.71 +31 55 53.4 892
1989-03-14 15:27:30 A 10 44 43.67 +31 56 02.6 372
1989-03-15 11:53:59 A 10 44 12.70 +31 58 06.8 892
1989-03-15 12:13:59 A 10 44 11.96 +31 58 07.7 892
1989-03-15 12:22:59 A 10 44 12.08 +31 58 11.4 892
1989-03-15 13:18:00 A 10 44 10.79 +31 58 11.9 897
1989-03-15 14:14:45 A 10 44 09.14 +31 58 18.1 897
1989-03-26 11:41:29 A 10 38 31.29 +32 07 49.4 400
1989-03-26 12:01:29 A 10 38 31.10 +32 07 46.7 400
1989-03-26 19:14:00 A 10 38 23.62 +32 07 39.2 046
1989-03-26 19:30:39 A 10 38 23.23 +32 07 39.6 046
1989-03-27 14:24:59 A 10 38 03.94 +32 07 09.2 400
1989-03-27 19:16:59 A 10 37 59.27 +32 07 00.9 046
1989-03-27 19:33:29 A 10 37 58.98 +32 07 01.0 046
1989-03-29 11:41:09 A 10 37 21.10 +32 05 26.1 897
1989-03-29 12:38:14 A 10 37 20.14 +32 05 24.1 897
1989-03-30 19:52:09 A 10 36 53.01 +32 03 41.8 046
1989-03-30 20:17:45 A 10 36 52.87 +32 03 41.8 046
1989-03-30 20:38:04 A 10 36 52.42 +32 03 39.5 046
1989-04-03 01:38:05 A 10 35 55.00 +31 57 58.8 801
1989-04-07 19:30:44 A 10 34 54.50 +31 45 36.6 046
1989-04-07 19:42:59 A 10 34 54.45 +31 45 36.7 046
1989-04-09 20:10:07 A 10 34 37.84 +31 39 02.6 046
1989-04-09 20:22:26 A 10 34 37.83 +31 39 00.1 046
1989-04-23 20:11:30 A 10 35 11.19 +30 35 07.9 046
1989-04-23 20:30:00 A 10 35 11.48 +30 35 05.3 046
1989-04-24 20:52:20 A 10 35 23.53 +30 29 21.8 046