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
1989-04-24 21:12:44 A 10 35 23.68 +30 29 16.3 046
1989-05-02 12:13:39 A 10 37 34.74 +29 42 27.5 373
1989-05-02 20:43:07 A 10 37 42.21 +29 40 10.3 046
1989-05-02 20:59:32 A 10 37 42.61 +29 40 03.7 046
1989-05-04 03:02:17 A 10 38 11.05 +29 31 44.5 801
1989-05-05 20:43:41 A 10 38 53.20 +29 19 51.3 046
1989-05-05 21:04:06 A 10 38 53.61 +29 19 45.0 046
1989-05-07 20:43:54 A 10 39 46.07 +29 05 51.5 046
1989-05-07 21:04:20 A 10 39 46.48 +29 05 47.2 046
1989-05-29 02:39:00 A 10 52 56.04 +26 19 13.5 C 293
1995-08-29 11:30:16 c 03 11 26.01 -02 48 09.7 691
1995-08-29 11:41:16 c 03 11 26.15 -02 48 11.4 691
1995-08-31 10:18:28 c 03 12 06.21 -02 54 01.1 691
1995-08-31 10:52:15 c 03 12 06.64 -02 54 05.5 691
1995-08-31 11:24:11 c 03 12 07.10 -02 54 09.9 691
1995-11-16 13:04:15 C 02 44 18.35 -06 46 58.1 360
1995-11-16 13:12:59 C 02 44 18.09 -06 46 57.6 360
1995-11-16 13:20:29 C 02 44 17.83 -06 46 57.5 360
1995-11-21 13:59:14 C 02 40 37.71 -06 38 48.8 360
1995-11-21 14:07:45 C 02 40 37.48 -06 38 48.1 360
1995-11-21 14:14:00 C 02 40 37.26 -06 38 47.1 360
1995-12-17 13:05:45 C 02 27 17.34 -04 39 46.3 360
1995-12-17 13:16:30 C 02 27 17.22 -04 39 42.6 360
1995-12-17 13:23:59 C 02 27 17.14 -04 39 40.4 360
1996-02-19 11:04:30 C 02 52 38.82 +05 27 52.2 360
1996-02-19 11:11:15 C 02 52 39.05 +05 27 54.6 360
1996-02-19 11:18:29 C 02 52 39.42 +05 27 58.4 360
1996-10-04 02:01:20 C 09 15 31.40 +20 45 42.7 118
1996-10-04 02:20:22 C 09 15 32.68 +20 45 41.1 118
1996-10-04 02:32:13 C 09 15 33.47 +20 45 39.7 118
1996-10-20 19:57:30 C 09 41 44.82 +20 15 00.8 360
1996-10-20 20:03:29 C 09 41 45.17 +20 15 00.3 360
1996-10-20 20:10:30 C 09 41 45.60 +20 14 59.9 360
1996-11-06 19:44:44 C 10 05 40.00 +19 59 52.9 360
1996-11-06 19:49:45 C 10 05 40.28 +19 59 52.7 360
1996-11-13 16:20:54 C 10 14 23.38 +20 00 57.2 897
1996-11-13 16:35:13 C 10 14 24.07 +20 00 57.7 897
1996-11-13 16:42:57 C 10 14 24.49 +20 00 57.5 897
1996-11-13 19:36:45 C 10 14 33.35 +20 01 02.2 360
1996-11-13 19:41:30 C 10 14 33.61 +20 01 02.0 360
1996-11-13 20:12:40 C 10 14 35.08 +20 01 02.7 867
1996-11-13 20:15:00 C 10 14 35.20 +20 01 02.9 867
1996-11-19 11:54:01 c 10 21 17.37 +20 06 02.1 691
1996-11-30 19:05:01 C 10 33 15.52 +20 28 26.7 897
1996-11-30 19:16:44 C 10 33 16.05 +20 28 28.0 897
1996-12-02 03:35:47 C 10 34 33.26 +20 32 21.6 118
1996-12-02 03:45:45 C 10 34 33.67 +20 32 22.5 118
1996-12-07 19:15:37 C 10 39 36.10 +20 51 50.1 900
1996-12-07 19:44:00 C 10 39 37.05 +20 51 54.6 900
1996-12-07 20:15:21 C 10 39 38.19 +20 51 59.7 897