Spacewatch-PANSTARRS (491P)

⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2020-12-17 (JD 2459200.5)
Eccentricity (e)0.2597378214 ± 4.25e-07
Semi-major axis (a)5.0117110696 AU ± 1.91e-07
Inclination (i)9.37134038° ± 2.62e-05
Long. of Asc. Node (Ω)311.73346578° ± 7.28e-05
Arg. of Perihelion (ω)299.08789885° ± 1.26e-04
Mean Anomaly (M)240.58236577° ± 5.87e-05
Mean Motion (n)0.0878466158°/day ± 5.01e-09
Perihelion dist (q)3.70998016 AU ± 2.13e-06
Aphelion dist (Q)6.31344198 AU ± 2.14e-06
Orbital Period11.21985490 yr ± 6.40e-07
Orbit Solution
SourceJPL
Solution Date2026-05-28 12:12:26
RMS Residual0.544″
Uncertainty0
Orbit TypeJupiter-family Comet
MOID2.708060 AU
Observations Used458
Oppositions—
Arc Total2013-2026
First Observation Used—
Last Observation Used2026-05-23
Observations (533)
Date Type RA Dec Mag Band Observatory
2026-07-26 03:45:21 C 23 11 09.408 +00 32 57.84 – V R17
2026-07-28 11:20:05 C 23 10 28.418 +00 33 17.21 – X F51
2026-07-28 12:30:28 C 23 10 27.458 +00 33 17.05 – X F51
2026-07-28 13:30:28 C 23 10 26.657 +00 33 17.28 – X F51
2026-07-22 17:52:41 C 23 12 02.854 +00 31 43.46 – V P07
2026-07-22 19:25:08 C 23 12 01.891 +00 31 45.80 – V P07
2026-07-22 20:27:17 C 23 12 01.217 +00 31 47.42 – V P07
2026-07-22 21:36:50 C 23 12 00.430 +00 31 48.65 – V P07
2026-07-30 17:51:05 C 23 09 44.552 +00 33 09.91 – W O18
2026-07-30 18:30:04 C 23 09 44.007 +00 33 09.14 – W O18
2026-08-04 13:08:44 C 23 08 00.542 +00 31 33.49 – V T08
2026-08-04 13:13:21 C 23 08 00.281 +00 31 32.48 – V T08
2026-08-04 13:28:01 C 23 08 00.082 +00 31 33.28 – V T08
2026-08-04 13:39:13 C 23 07 59.998 +00 31 31.84 – V T08
2026-08-06 00:04:47 C 23 07 26.170 +00 30 43.78 – V M22
2026-08-06 00:07:23 C 23 07 26.102 +00 30 43.13 – V M22
2026-08-06 00:11:55 C 23 07 25.992 +00 30 42.62 – V M22
2026-08-06 00:45:24 C 23 07 25.442 +00 30 41.80 – V M22
2026-08-05 17:38:20 C 23 07 32.707 +00 30 49.95 – W O18
2026-08-05 18:54:38 C 23 07 31.407 +00 30 48.00 – W O18
2026-08-08 12:27:45 C 23 06 23.924 +00 28 47.77 – X F52
2026-08-08 12:45:16 C 23 06 23.592 +00 28 47.15 – X F52
2026-08-08 13:02:43 C 23 06 23.281 +00 28 46.52 – X F52
2026-08-08 13:20:10 C 23 06 22.956 +00 28 46.01 – X F52
2026-08-09 19:54:54 C 23 05 50.049 +00 27 36.75 – W O18
2026-08-09 21:22:10 C 23 05 48.431 +00 27 33.29 – W O18
2026-08-11 17:49:06 C 23 04 59.072 +00 25 40.22 – W O18
2026-08-11 18:36:12 C 23 04 58.159 +00 25 37.81 – W O18
2026-08-11 20:15:41 C 23 04 56.232 +00 25 33.70 – W O18
2026-08-12 12:36:34 C 23 04 37.568 +00 24 48.61 – X F52
2026-08-12 12:53:17 C 23 04 37.238 +00 24 47.81 – X F52
2026-08-12 13:09:58 C 23 04 36.908 +00 24 47.01 – X F52
2026-08-12 13:26:36 C 23 04 36.578 +00 24 46.15 – X F52