Gehrels 2 (78P)

⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2016-01-21 (JD 2457408.5)
Eccentricity (e)0.4611833286 ± 9.95e-08
Semi-major axis (a)3.7374830666 AU ± 6.30e-08
Inclination (i)6.25032147° ± 4.77e-06
Long. of Asc. Node (Ω)210.55899221° ± 3.97e-05
Arg. of Perihelion (ω)192.73377389° ± 4.80e-05
Mean Anomaly (M)200.64643491° ± 1.31e-05
Mean Motion (n)0.1364065495°/day ± 3.45e-09
Perihelion dist (q)2.01381819 AU ± 3.73e-07
Aphelion dist (Q)5.46114795 AU ± 3.83e-07
Orbital Period7.22565219 yr ± 1.83e-07
Orbit Solution
SourceJPL
Solution Date2026-03-07 15:22:14
RMS Residual0.611″
Uncertainty0
Orbit TypeJupiter-family Comet
MOID1.022970 AU
Observations Used6064
Oppositions—
Arc Total2011-2026
First Observation Used—
Last Observation Used2026-01-25
Observations (8697)
Date Type RA Dec Mag Band Observatory
1997-12-19 22:25:26 C 06 43 08.86 +13 12 39.4 – – 046
1997-12-21 15:21:15 C 06 41 43.68 +13 10 58.9 – – 360
1997-12-21 15:27:44 C 06 41 43.44 +13 10 58.7 – – 360
1997-12-21 16:26:51 C 06 41 41.29 +13 10 56.9 – – 897
1997-12-21 16:40:41 C 06 41 40.70 +13 10 56.0 – – 897
1997-12-21 17:03:29 C 06 41 39.93 +13 10 55.2 – – 360
1997-12-23 14:19:54 C 06 40 04.69 +13 09 30.0 – – 900
1997-12-23 14:33:11 C 06 40 04.18 +13 09 28.8 – – 900
1997-12-24 15:00:00 – 06 39 12.22 +13 08 55.2 – – 372
1997-12-27 14:44:58 C 06 36 39.42 +13 07 54.9 – – 403
1997-12-27 14:58:31 C 06 36 38.89 +13 07 55.4 – – 403
1997-12-27 16:54:29 – 06 36 34.43 +13 07 53.9 – – 372
1997-12-28 01:55:05 C 06 36 15.32 +13 07 49.2 – – 966
1997-12-29 00:28:15 C 06 35 27.41 +13 07 47.7 – – 046
1997-12-29 00:29:46 C 06 35 27.35 +13 07 47.6 – – 046
1997-12-29 00:30:48 C 06 35 27.31 +13 07 47.7 – – 046
1997-12-31 00:53:32 C 06 33 45.28 +13 08 03.4 – – 118
1997-12-31 01:04:09 C 06 33 44.88 +13 08 04.0 – – 118
1997-12-31 13:48:51 C 06 33 18.47 +13 08 16.7 – – 403
1997-12-31 14:17:12 C 06 33 17.42 +13 08 17.0 – – 403
1997-12-31 14:59:21 C 06 33 15.93 +13 08 15.7 – – 897
1997-12-31 15:10:49 C 06 33 15.51 +13 08 16.1 – – 897
1997-12-31 16:04:02 C 06 33 13.61 +13 08 16.7 – – 867
1997-12-31 16:12:31 C 06 33 13.29 +13 08 16.7 – – 867
1998-01-01 20:38:37 C 06 32 14.72 +13 08 43.2 – – 605
1998-01-01 21:26:08 C 06 32 13.05 +13 08 45.4 – – 605
1998-01-02 06:11:59 – 06 31 55.09 +13 08 55.4 – q 261
1998-01-02 07:02:00 – 06 31 53.28 +13 08 56.5 – q 261
1998-01-02 13:11:24 C 06 31 40.72 +13 09 05.2 – – 900
1998-01-02 13:23:19 C 06 31 40.24 +13 09 04.7 – – 900
1998-01-02 15:20:47 C 06 31 36.13 +13 09 07.6 – – 355
1998-01-02 15:27:19 C 06 31 35.90 +13 09 07.8 – – 355
1998-01-02 15:30:40 C 06 31 35.79 +13 09 07.5 – – 355
1998-01-05 13:17:38 C 06 29 16.46 +13 11 09.9 – – 352
1998-01-05 13:21:38 C 06 29 16.33 +13 11 10.2 – – 352
1998-01-05 13:25:39 C 06 29 16.21 +13 11 10.0 – – 352
1998-01-05 14:29:30 C 06 29 13.98 +13 11 13.6 – – 403
1998-01-05 14:36:35 C 06 29 13.81 +13 11 13.5 – – 403
1998-01-06 13:25:15 C 06 28 29.74 +13 12 04.6 – – 403
1998-01-06 13:31:29 C 06 28 29.58 +13 12 04.8 – – 403
1998-01-06 15:40:29 – 06 28 25.30 +13 12 08.5 – – 372
1998-01-06 19:01:17 C 06 28 19.22 +13 12 15.9 – – 143
1998-01-06 19:12:33 C 06 28 18.87 +13 12 16.8 – – 143
1998-01-06 19:23:51 C 06 28 18.54 +13 12 17.3 – – 143
1998-01-06 23:39:55 C 06 28 10.01 +13 12 27.4 – – 118
1998-01-06 23:53:26 C 06 28 09.58 +13 12 28.0 – – 118
1998-01-07 23:51:23 C 06 27 24.49 +13 13 29.8 – – 118
1998-01-09 16:31:17 C 06 26 10.13 +13 15 30.2 – – 403
1998-01-09 16:45:29 C 06 26 09.62 +13 15 30.3 – – 403
1998-01-10 21:25:47 C 06 25 19.31 +13 17 02.5 – – 118