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
1997-01-31 15:48:29 C 10 51 14.18 +28 06 00.2 360
1997-02-01 16:13:42 C 10 50 46.03 +28 16 09.9 355
1997-02-01 16:22:15 C 10 50 45.88 +28 16 14.8 355
1997-02-07 03:50:55 10 47 54.95 +29 09 47.4 017
1997-02-07 03:56:46 10 47 54.81 +29 09 49.7 017
1997-02-07 04:02:40 10 47 54.67 +29 09 52.1 017
1997-02-14 22:31:49 C 10 43 05.04 +30 19 49.2 605
1997-02-14 22:38:00 C 10 43 04.77 +30 19 49.1 605
1997-02-14 23:01:53 C 10 43 04.19 +30 19 58.3 605
1997-02-20 01:13:35 C 10 39 34.63 +31 00 17.1 118
1997-02-20 01:23:00 C 10 39 34.36 +31 00 20.0 118
1997-02-20 23:37:14 C 10 38 55.42 +31 07 06.5 118
1997-02-20 23:49:57 C 10 38 55.04 +31 07 10.0 118
1997-03-01 16:27:29 C 10 32 47.16 +32 01 14.1 360
1997-03-01 16:32:00 C 10 32 47.02 +32 01 15.2 360
1997-03-03 00:45:52 C 10 31 51.30 +32 07 56.2 118
1997-03-03 00:48:06 C 10 31 51.26 +32 07 56.8 118
1997-03-03 00:53:15 C 10 31 51.08 +32 07 57.7 118
1997-03-05 12:51:59 C 10 30 09.62 +32 19 15.6 897
1997-03-05 13:11:59 C 10 30 09.08 +32 19 18.9 897
1997-03-05 21:01:58 C 10 29 56.03 +32 20 39.8 118
1997-03-05 21:11:58 C 10 29 55.76 +32 20 41.7 118
1997-03-11 15:27:30 C 10 26 16.75 +32 40 02.7 360
1997-03-11 15:32:30 C 10 26 16.62 +32 40 03.3 360
1997-03-17 20:39:33 C 10 22 52.39 +32 51 17.2 118
1997-03-17 20:49:56 C 10 22 52.17 +32 51 17.5 118
1997-03-31 13:49:15 C 10 17 57.28 +32 43 40.5 360
1997-03-31 13:53:44 C 10 17 57.25 +32 43 40.4 360
1997-03-31 21:51:19 C 10 17 53.17 +32 42 57.2 605
1997-03-31 22:08:20 C 10 17 52.96 +32 42 56.0 605
1997-03-31 22:16:30 C 10 17 52.85 +32 42 54.9 605
1997-04-03 01:08:09 C 10 17 29.77 +32 37 59.3 118
1997-04-03 01:20:14 C 10 17 29.72 +32 37 57.8 118
1997-04-03 22:52:01 C 10 17 21.94 +32 35 38.3 118
1997-04-03 23:01:01 C 10 17 21.89 +32 35 37.6 118
1997-04-12 12:29:28 C 10 17 02.52 +32 05 59.8 352
1997-04-12 12:33:07 C 10 17 02.59 +32 05 58.7 352
1997-04-20 20:53:00 C 10 18 18.93 +31 26 16.3 605
1997-04-20 21:18:13 C 10 18 18.77 +31 26 05.5 605
1997-04-24 23:33:42 C 10 19 28.84 +31 03 15.9 118
1997-04-24 23:42:11 C 10 19 28.93 +31 03 14.3 118
1997-04-24 23:48:10 C 10 19 29.01 +31 03 12.6 118
1997-04-25 13:34:22 C 10 19 40.08 +30 59 51.4 352
1997-04-25 13:38:01 C 10 19 40.23 +30 59 51.8 352
1997-04-29 13:16:59 C 10 21 09.92 +30 35 33.8 360
1997-04-29 13:21:44 C 10 21 10.04 +30 35 32.7 360
1997-05-01 20:43:58 C 10 22 10.25 +30 20 43.0 046
1997-05-01 20:51:48 C 10 22 10.35 +30 20 41.5 046
1997-05-01 20:53:46 C 10 22 10.42 +30 20 40.5 046
1997-05-17 21:10:11 C 10 31 36.76 +28 25 30.3 118