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
1986-11-27 03:44:00 A 00 11 03.8 +13 20 02 675
1986-11-27 04:43:59 A 00 11 17.1 +13 18 19 16.5 675
1986-11-30 03:56:59 A 00 25 54.76 +11 24 19.0 675
1986-11-30 04:12:00 A 00 25 57.57 +11 23 54.9 675
1986-12-01 23:28:26 A 00 33 35.72 +10 26 02.8 16.0 494
1986-12-02 02:52:54 A 00 34 10.12 +10 21 51.5 17.0 A 801
1986-12-02 03:16:12 A 00 34 14.38 +10 21 25.0 16.0 688
1986-12-03 02:51:59 A 00 38 04.0 +09 53 26 675
1986-12-03 03:51:59 A 00 38 13.3 +09 52 14 675
1986-12-04 03:47:55 A 00 41 53.66 +09 25 55.0 B 691
1986-12-04 03:53:06 A 00 41 54.40 +09 25 49.9 B 691
1986-12-04 04:26:11 A 00 41 59.22 +09 25 15.3 B 691
1986-12-04 23:45:13 A 00 44 49.50 +09 05 22.1 A 801
1986-12-21 06:27:59 A 01 26 42.10 +05 23 46.6 675
1986-12-21 06:35:19 A 01 26 42.70 +05 23 44.2 675
1986-12-31 01:58:35 A 01 44 56.50 +04 44 53.7 688
1986-12-31 02:04:51 A 01 44 56.92 +04 44 53.2 688
1987-01-25 03:53:43 A 02 24 40.54 +05 13 17.9 B 691
1987-01-25 04:00:25 A 02 24 40.94 +05 13 18.6 B 691
1987-01-25 04:14:50 A 02 24 41.83 +05 13 20.5 B 691
1987-01-29 02:12:40 A 02 30 34.30 +05 26 05.3 B 691
1987-01-29 02:23:20 A 02 30 34.94 +05 26 06.7 B 691
1987-01-29 02:57:35 A 02 30 37.01 +05 26 11.8 B 691
1987-02-01 03:17:19 A 02 35 07.00 +05 36 52.7 688
1987-02-01 03:30:29 A 02 35 07.76 +05 36 54.7 688
1987-02-28 03:09:37 A 03 15 16.15 +07 26 53.3 B 691
1987-02-28 03:20:57 A 03 15 16.83 +07 26 55.3 B 691
1987-11-19 11:19:35 A 08 54 49.90 -13 18 33.5 675
1987-11-19 11:26:59 A 08 54 50.00 -13 18 37.7 675
1987-11-19 11:41:29 A 08 54 50.03 -13 18 48.6 675
1987-11-19 11:47:40 A 08 54 50.08 -13 18 52.0 675
1987-12-21 10:50:57 A 08 44 41.54 -21 52 57.3 B 691
1987-12-21 11:01:01 A 08 44 41.14 -21 53 04.2 B 691
1987-12-21 11:19:27 A 08 44 40.43 -21 53 15.8 B 691
1987-12-22 10:03:44 A 08 43 47.33 -22 07 33.0 B 691
1987-12-22 10:41:32 A 08 43 45.78 -22 07 57.5 B 691
1988-01-13 09:21:43 A 08 12 42.66 -26 31 37.0 688
1988-01-13 09:31:07 A 08 12 41.89 -26 31 39.5 688
1988-02-12 05:02:53 A 07 12 53.30 -26 10 06.5 B 691
1988-02-12 05:14:34 A 07 12 52.40 -26 10 02.1 B 691
1988-02-13 04:22:58 A 07 11 06.57 -26 00 50.9 B 691
1988-02-13 04:33:29 A 07 11 05.78 -26 00 46.4 B 691
1988-02-13 04:46:28 A 07 11 04.76 -26 00 41.1 B 691
1988-03-13 02:59:58 A 06 36 55.00 -19 01 55.0 B 691
1988-03-13 03:02:47 A 06 36 54.90 -19 01 53.1 B 691
1988-03-15 02:37:33 A 06 36 02.04 -18 28 17.7 B 691
1988-03-15 02:47:42 A 06 36 01.89 -18 28 10.3 B 691
1990-01-26 14:45:12 09 16 43.13 -41 49 51.0 b 260
1990-01-26 15:35:12 09 16 38.33 -41 50 31.6 b 260
1990-03-25 09:49:34 A 06 17 04.26 -35 48 49.9 18.3 474