3838 Epona (1986 WA)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.7027320931 ± 1.48e-08
Semi-major axis (a)1.5048507223 AU ± 8.12e-10
Inclination (i)29.19742174° ± 2.05e-06
Long. of Asc. Node (Ω)235.45990588° ± 2.17e-06
Arg. of Perihelion (ω)49.73036289° ± 2.55e-06
Mean Anomaly (M)79.34514013° ± 2.89e-06
Mean Motion (n)0.5339150274°/day ± 4.32e-10
Perihelion dist (q)0.44734382 AU ± 2.23e-08
Aphelion dist (Q)2.56235762 AU ± 2.23e-08
Orbital Period1.84603585 yr ± 1.49e-09
Physical Parameters
H (abs. magnitude)15.67
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.260″
Uncertainty0
Orbit TypeApollo
MOID0.158551 AU
Observations Used2104
Gaia Obs Used70
Oppositions14
Arc Total1986-2026
First Observation Used1986-12-01
Last Observation Used2026-02-27
Observations (2522)
Date Type RA Dec Mag Band Observatory
1999-11-07 06:36:57 C 05 00 16.58 +26 59 19.2 16.8 z 294
1999-11-07 07:55:14 C 04 59 56.01 +26 56 13.8 17.0 z 294
1999-11-07 08:09:30 C 04 59 52.07 +26 55 36.8 17.0 z 294
1999-11-10 05:18:29 C 04 42 56.46 +24 13 05.7 c 713
1999-11-10 05:32:00 C 04 42 53.24 +24 12 34.4 c 713
1999-11-10 05:51:59 C 04 42 48.51 +24 11 48.4 c 713
1999-11-10 06:06:59 C 04 42 44.94 +24 11 13.9 c 713
1999-11-12 08:42:22 C 04 31 20.49 +22 15 31.0 15.8 a 704
1999-11-12 09:02:57 C 04 31 15.93 +22 14 44.9 16.2 a 704
1999-11-12 09:23:30 C 04 31 11.37 +22 13 58.4 16.0 a 704
1999-11-12 09:44:04 C 04 31 06.81 +22 13 12.1 16.0 a 704
1999-11-12 10:04:41 C 04 31 02.25 +22 12 25.6 16.0 a 704
1999-11-12 21:20:32 C 04 28 38.76 +21 47 07.6 14.8 947
1999-11-12 22:21:36 C 04 28 25.61 +21 44 52.8 14.7 947
1999-11-13 20:25:14 C 04 23 50.03 +20 56 14.8 14.6 947
1999-11-13 20:31:48 C 04 23 48.69 +20 56 00.4 14.7 947
1999-11-13 20:36:43 C 04 23 47.72 +20 55 49.7 14.6 947
1999-11-13 22:31:47 C 04 23 23.67 +20 51 46.2 15.0 m 171
1999-11-13 22:50:51 C 04 23 19.72 +20 51 04.0 14.6 m 171
1999-11-14 23:57:01 C 04 18 18.94 +19 57 07.4 049
1999-11-15 00:10:35 C 04 18 16.24 +19 56 38.6 049
1999-11-15 00:23:56 C 04 18 13.59 +19 56 10.3 049
1999-11-16 07:21:52 C 04 12 19.41 +18 51 45.8 15.1 m 732
1999-11-16 07:23:51 C 04 12 19.03 +18 51 41.0 15.2 m 732
1999-11-16 07:25:50 C 04 12 18.67 +18 51 37.3 15.3 m 732
1999-11-17 02:02:15 C 04 08 54.68 +18 13 51.2 15.0 m 171
1999-11-17 02:14:04 C 04 08 52.44 +18 13 27.4 14.6 m 171
1999-11-17 02:29:49 C 04 08 49.54 +18 12 55.4 14.6 m 171
1999-11-17 02:42:14 C 04 08 48.87 +18 12 32.2 c 831
1999-11-17 03:07:15 C 04 08 44.34 +18 11 42.8 c 831
1999-11-17 03:30:24 C 04 08 40.10 +18 10 56.9 c 831
1999-11-17 06:43:42 C 04 08 05.17 +18 04 30.4 15.4 a 704
1999-11-17 07:05:45 C 04 08 01.15 +18 03 47.0 15.5 a 704
1999-11-17 07:28:06 C 04 07 57.06 +18 03 02.7 15.4 a 704
1999-11-17 07:49:35 C 04 07 52.97 +18 02 24.7 15.8 m 732
1999-11-17 07:50:07 C 04 07 53.07 +18 02 18.9 15.3 a 704
1999-11-17 07:51:03 C 04 07 52.65 +18 02 22.2 16.1 m 732
1999-11-17 07:52:28 C 04 07 52.46 +18 02 18.2 15.7 m 732
1999-11-17 08:12:15 C 04 07 49.03 +18 01 35.0 15.5 a 704
1999-11-19 02:29:11 C 04 00 35.34 +16 39 55.3 d 557
1999-11-19 02:36:35 C 04 00 34.11 +16 39 41.4 d 557
1999-11-19 02:54:11 C 04 00 31.19 +16 39 08.3 d 557
1999-11-19 03:01:36 C 04 00 29.95 +16 38 54.4 d 557
1999-11-19 03:19:41 C 04 00 26.96 +16 38 20.3 d 557
1999-11-19 03:27:05 C 04 00 25.73 +16 38 06.3 d 557
1999-11-30 21:51:03 C 03 25 02.63 +09 39 05.1 610
1999-11-30 21:58:03 C 03 25 01.99 +09 38 57.4 610
1999-11-30 22:05:04 C 03 25 01.34 +09 38 49.7 610
1999-11-30 22:12:04 C 03 25 00.70 +09 38 42.0 610
1999-11-30 22:19:04 C 03 25 00.05 +09 38 34.3 610