13P

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2020-12-10 (JD 2459193.5)
Eccentricity (e)0.9297090702 ± 3.19e-08
Semi-major axis (a)16.6888593039 AU ± 1.52e-07
Inclination (i)44.62417343° ± 1.37e-05
Long. of Asc. Node (Ω)85.87217989° ± 1.51e-05
Arg. of Perihelion (ω)64.51127082° ± 3.03e-05
Mean Anomaly (M)341.22493651° ± 4.64e-07
Mean Motion (n)0.0144565311°/day ± 1.97e-10
Perihelion dist (q)1.17307544 AU ± 5.33e-07
Aphelion dist (Q)32.20464317 AU ± 6.08e-07
Orbital Period68.17861620 yr ± 9.30e-07
Orbit Solution
SourceJPL
Solution Date2026-07-28 14:18:43
RMS Residual0.568″
Uncertainty0
Orbit TypeHalley-type Comet*
MOID0.470257 AU
Observations Used2605
Oppositions
Arc Total1887-2025
First Observation Used
Last Observation Used2025-07-31
Observations (2783)
Date Type RA Dec Mag Band Observatory
2025-04-07 03:04:48 C 18 46 51.87 -22 27 41.6 q 215
2025-04-08 07:42:46 C 18 46 55.762 -22 33 13.46 V W68
2025-04-08 07:45:22 C 18 46 55.793 -22 33 14.18 V W68
2025-04-08 07:50:02 C 18 46 55.786 -22 33 15.26 V W68
2025-04-08 07:52:39 C 18 46 55.790 -22 33 15.30 V W68
2025-04-08 07:54:39 C 18 46 55.771 -22 33 15.44 V W68
2025-04-08 08:03:36 C 18 46 55.836 -22 33 17.32 V W68
2025-04-08 08:06:52 C 18 46 55.793 -22 33 18.72 V W68
2025-04-08 08:18:52 C 18 46 55.814 -22 33 20.56 V W68
2025-04-12 07:40:23 C 18 46 56.155 -22 52 14.56 V W68
2025-04-12 07:44:18 C 18 46 56.138 -22 52 15.06 V W68
2025-04-12 08:20:56 C 18 46 56.064 -22 52 22.62 V W68
2025-04-12 08:28:50 C 18 46 56.040 -22 52 23.56 V W68
2025-04-16 07:29:08 C 18 46 37.027 -23 11 51.79 V W68
2025-04-16 07:31:46 C 18 46 36.989 -23 11 52.66 V W68
2025-04-16 07:36:18 C 18 46 37.006 -23 11 53.63 V W68
2025-04-25 07:30:20 C 18 44 40.896 -23 58 22.44 V W68
2025-04-25 07:33:36 C 18 44 40.858 -23 58 22.91 V W68
2025-04-25 07:38:10 C 18 44 40.754 -23 58 22.87 V W68
2025-04-25 07:47:23 C 18 44 40.682 -23 58 26.44 V W68
2025-04-27 02:16:34 C 18 44 05.942 -24 07 58.55 V Z10
2025-04-27 02:27:24 C 18 44 05.654 -24 08 00.53 V Z10
2025-04-28 18:43:25 C 18 43 29.12 -24 17 02.6 V P87
2025-04-28 18:56:42 C 18 43 28.81 -24 17 05.8 V P87
2025-04-29 06:52:25 C 18 43 17.359 -24 19 46.78 V W68
2025-04-29 07:18:14 C 18 43 16.915 -24 19 52.97 V W68
2025-04-29 07:22:51 C 18 43 16.843 -24 19 54.23 V W68
2025-04-29 07:29:23 C 18 43 16.726 -24 19 55.31 V W68
2025-04-30 02:37:22 C 18 42 57.736 -24 24 18.15 Z M09
2025-04-30 02:47:59 C 18 42 57.484 -24 24 21.45 Z M09
2025-04-30 02:57:06 C 18 42 57.242 -24 24 23.66 Z M09
2025-05-02 06:31:03 C 18 42 01.769 -24 36 09.68 V W68
2025-05-02 06:33:41 C 18 42 01.692 -24 36 10.48 V W68
2025-05-02 06:37:39 C 18 42 01.654 -24 36 12.28 V W68
2025-05-02 07:11:44 C 18 42 01.001 -24 36 19.62 V W68
2025-05-06 06:31:08 C 18 40 03.694 -24 58 26.11 V W68
2025-05-06 06:33:46 C 18 40 03.655 -24 58 27.41 V W68
2025-05-06 06:38:22 C 18 40 03.506 -24 58 28.34 V W68
2025-05-06 06:46:18 C 18 40 03.355 -24 58 30.29 V W68
2025-05-10 06:11:18 C 18 37 47.501 -25 20 53.12 V W68
2025-05-10 06:15:19 C 18 37 47.410 -25 20 54.42 V W68
2025-05-10 06:19:56 C 18 37 47.285 -25 20 55.07 V W68
2025-05-10 06:29:49 C 18 37 47.042 -25 20 57.55 V W68
2025-05-11 05:19:07 C 18 37 11.978 -25 26 20.58 V W68
2025-05-11 05:22:23 C 18 37 11.861 -25 26 21.12 V W68
2025-05-11 05:26:19 C 18 37 11.825 -25 26 22.38 V W68
2025-05-11 05:30:14 C 18 37 11.731 -25 26 23.39 V W68
2025-05-11 05:34:07 C 18 37 11.522 -25 26 24.14 V W68
2025-05-12 03:17:48 C 18 36 37.121 -25 31 34.00 V R17
2025-05-12 03:38:20 C 18 36 36.598 -25 31 37.85 V R17