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
1998-02-04 03:53:10 C 01 57 28.16 +06 40 18.0 z 711
1999-01-23 07:06:42 C 07 25 00.60 -22 43 54.7 z 711
1999-01-23 07:25:02 C 07 24 59.15 -22 43 53.3 z 711
1999-01-26 12:37:33 C 07 18 56.20 -22 37 08.4 z 428
1999-01-26 12:51:13 C 07 18 55.12 -22 37 06.8 z 428
1999-02-19 04:50:19 C 06 41 28.05 -19 27 21.7 z 711
1999-02-19 05:04:01 C 06 41 27.31 -19 27 14.4 z 711
1999-10-16 22:39:44 C 07 36 38.04 +42 46 02.0 557
1999-10-16 23:14:42 C 07 36 27.02 +42 45 29.0 557
1999-10-17 00:23:05 C 07 36 05.37 +42 44 23.2 557
1999-10-17 01:15:28 C 07 35 48.73 +42 43 32.7 557
1999-10-17 01:59:34 C 07 35 34.66 +42 42 49.9 557
1999-10-17 03:01:12 C 07 35 14.91 +42 41 49.3 557
1999-10-23 20:15:06 C 06 43 34.53 +39 10 04.8 z 151
1999-10-23 20:20:16 C 06 43 32.88 +39 09 54.1 z 151
1999-10-23 20:26:02 C 06 43 30.99 +39 09 45.0 z 151
1999-10-26 00:56:55 C 06 26 38.45 +37 39 56.7 c 461
1999-10-26 00:59:24 C 06 26 37.65 +37 39 52.3 c 461
1999-10-26 01:01:03 C 06 26 37.13 +37 39 49.5 c 461
1999-11-01 06:21:39 C 05 40 21.46 +32 35 06.4 z 719
1999-11-01 06:23:53 C 05 40 20.72 +32 35 01.9 z 719
1999-11-01 07:03:46 C 05 40 08.75 +32 33 34.2 z 719
1999-11-02 00:12:27 C 05 35 05.30 +31 54 55.3 c 118
1999-11-02 00:21:37 C 05 35 02.58 +31 54 34.6 c 118
1999-11-02 09:42:12 C 05 32 19.07 +31 33 23.9 17.4 a 704
1999-11-02 10:06:19 C 05 32 11.88 +31 32 29.3 16.3 a 704
1999-11-02 10:29:46 C 05 32 04.92 +31 31 35.2 16.2 a 704
1999-11-02 10:52:59 C 05 31 58.07 +31 30 42.2 16.6 a 704
1999-11-02 11:16:14 C 05 31 51.18 +31 29 48.5 16.7 a 704
1999-11-03 16:57:22 C 05 23 22.61 +30 21 17.9 z 900
1999-11-03 17:06:20 C 05 23 20.03 +30 20 57.2 z 900
1999-11-04 01:36:59 C 05 20 56.14 +30 01 00.0 z 121
1999-11-04 01:43:00 C 05 20 54.45 +30 00 45.9 z 121
1999-11-04 02:01:00 C 05 20 49.27 +30 00 03.5 z 121
1999-11-04 02:03:59 C 05 20 48.42 +29 59 56.3 z 121
1999-11-05 05:44:32 C 05 13 11.99 +28 55 00.3 16.0 z 294
1999-11-05 06:12:05 C 05 13 04.15 +28 53 54.6 15.9 z 294
1999-11-06 01:38:35 C 05 07 50.54 +28 07 56.4 610
1999-11-06 01:43:37 C 05 07 49.18 +28 07 44.6 610
1999-11-06 01:48:37 C 05 07 47.82 +28 07 32.8 610
1999-11-06 01:53:36 C 05 07 46.46 +28 07 21.0 610
1999-11-06 01:58:36 C 05 07 45.10 +28 07 09.3 610
1999-11-06 02:02:36 C 05 07 44.02 +28 06 59.9 610
1999-11-06 02:05:36 C 05 07 43.20 +28 06 52.8 610
1999-11-06 02:08:37 C 05 07 42.39 +28 06 45.8 610
1999-11-06 02:11:36 C 05 07 41.57 +28 06 38.7 610
1999-11-06 05:44:00 C 05 06 46.72 +27 58 17.3 c 713
1999-11-06 06:02:00 C 05 06 41.91 +27 57 34.8 c 713
1999-11-06 06:17:01 C 05 06 37.91 +27 56 59.5 c 713
1999-11-06 06:31:59 C 05 06 33.87 +27 56 24.3 c 713