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
1996-12-07 20:22:18 C 10 39 38.43 +20 52 00.8 897
1996-12-14 16:03:29 C 10 44 54.57 +21 22 27.8 896
1996-12-14 16:38:59 C 10 44 55.67 +21 22 35.1 896
1996-12-18 11:04:37 c 10 47 24.66 +21 42 49.9 691
1996-12-18 11:10:50 c 10 47 24.91 +21 42 50.3 691
1996-12-18 11:17:29 c 10 47 25.21 +21 42 51.1 691
1996-12-18 16:28:30 10 47 33.61 +21 44 03.8 372
1996-12-18 16:34:14 10 47 33.80 +21 44 05.4 372
1996-12-18 16:39:59 10 47 33.91 +21 44 07.7 372
1996-12-19 17:06:49 C 10 48 10.88 +21 50 02.4 900
1996-12-20 16:00:02 C 10 48 44.29 +21 55 44.1 355
1996-12-20 16:17:43 C 10 48 44.67 +21 55 48.6 355
1996-12-21 17:01:09 C 10 49 19.48 +22 02 08.4 402
1996-12-21 17:03:34 C 10 49 19.59 +22 02 09.6 402
1996-12-21 17:12:02 C 10 49 19.71 +22 02 11.0 402
1996-12-21 18:51:12 10 49 21.92 +22 02 38.4 372
1996-12-22 01:52:02 C 10 49 31.45 +22 04 25.5 046
1996-12-22 01:54:20 C 10 49 31.54 +22 04 26.2 046
1996-12-22 01:57:10 C 10 49 31.56 +22 04 27.2 046
1996-12-28 02:26:55 C 10 52 21.92 +22 45 21.4 118
1996-12-28 02:39:58 C 10 52 22.14 +22 45 25.0 118
1997-01-02 14:37:53 C 10 54 12.33 +23 27 52.4 355
1997-01-02 14:42:06 C 10 54 12.34 +23 27 53.5 355
1997-01-02 20:19:02 C 10 54 15.78 +23 29 48.8 897
1997-01-02 20:30:40 C 10 54 15.89 +23 29 52.7 897
1997-01-07 18:49:37 C 10 55 13.98 +24 11 56.2 900
1997-01-07 18:55:16 C 10 55 13.95 +24 11 59.0 900
1997-01-10 18:10:04 C 10 55 30.85 +24 38 50.5 355
1997-01-10 18:21:23 C 10 55 30.86 +24 38 55.3 355
1997-01-10 20:23:15 C 10 55 31.01 +24 39 42.0 897
1997-01-10 20:33:19 C 10 55 31.03 +24 39 45.6 897
1997-01-11 17:38:15 C 10 55 33.51 +24 47 55.8 360
1997-01-11 17:42:59 C 10 55 33.50 +24 47 57.8 360
1997-01-12 02:05:40 C 10 55 33.96 +24 51 12.1 124
1997-01-12 02:13:14 C 10 55 33.99 +24 51 14.8 124
1997-01-12 02:18:35 C 10 55 33.98 +24 51 17.5 124
1997-01-12 02:25:03 C 10 55 33.96 +24 51 19.5 124
1997-01-12 15:58:31 C 10 55 34.68 +24 56 39.6 867
1997-01-12 16:37:00 C 10 55 34.59 +24 56 54.2 867
1997-01-13 16:52:50 C 10 55 34.09 +25 06 29.2 900
1997-01-13 17:11:14 C 10 55 34.04 +25 06 36.7 900
1997-01-13 17:54:15 C 10 55 34.04 +25 06 54.1 360
1997-01-13 17:59:29 C 10 55 34.03 +25 06 56.2 360
1997-01-16 09:05:59 c 10 55 25.36 +25 32 18.9 691
1997-01-16 09:46:39 c 10 55 25.15 +25 32 35.4 691
1997-01-16 15:22:59 C 10 55 24.03 +25 34 51.8 402
1997-01-16 15:33:00 C 10 55 24.00 +25 34 55.4 402
1997-01-29 15:34:56 C 10 52 05.56 +27 45 44.8 900
1997-01-29 16:03:25 C 10 52 05.08 +27 45 56.4 900
1997-01-31 15:42:00 C 10 51 14.31 +28 05 57.6 360