85818 (1998 XM4)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4160289487 ± 3.68e-09
Semi-major axis (a)1.6566352039 AU ± 1.12e-09
Inclination (i)62.71599647° ± 5.04e-07
Long. of Asc. Node (Ω)235.63985899° ± 5.34e-07
Arg. of Perihelion (ω)301.21649960° ± 1.17e-06
Mean Anomaly (M)131.39619181° ± 2.13e-06
Mean Motion (n)0.4622447073°/day ± 4.68e-10
Perihelion dist (q)0.96742700 AU ± 6.12e-09
Aphelion dist (Q)2.34584341 AU ± 6.29e-09
Orbital Period2.13226083 yr ± 2.16e-09
Physical Parameters
H (abs. magnitude)15.42
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.022″
Uncertainty0
Orbit TypeApollo
MOID0.109072 AU
Observations Used1396
Gaia Obs Used123
Oppositions13
Arc Total1993-2025
First Observation Used1993-05-24
Last Observation Used2025-10-24
Observations (1511)
Date Type RA Dec Mag Band Observatory
2025-03-19 08:20:52 C 19 46 57.708 -37 19 17.94 V W68
2025-03-19 08:21:31 C 19 46 57.730 -37 19 16.07 V W68
2025-03-19 08:33:15 C 19 46 57.938 -37 18 49.79 V W68
2025-03-19 08:33:54 C 19 46 57.919 -37 18 48.13 V W68
2025-03-20 08:22:21 C 19 47 23.690 -36 23 43.51 V W68
2025-03-20 08:27:08 C 19 47 23.782 -36 23 32.75 V W68
2025-03-20 08:43:06 C 19 47 24.017 -36 22 55.38 V W68
2025-03-20 08:50:34 C 19 47 24.175 -36 22 38.24 V W68
2025-03-26 03:15:57 C 19 49 33.514 -30 42 03.10 V M22
2025-03-26 03:20:31 C 19 49 33.569 -30 41 51.43 V M22
2025-03-26 03:34:03 C 19 49 33.698 -30 41 16.69 V M22
2025-03-26 03:45:56 C 19 49 33.847 -30 40 46.06 V M22
2025-03-28 09:02:34 C 19 50 13.440 -28 19 45.23 V W68
2025-03-28 09:17:49 C 19 50 13.560 -28 19 04.04 V W68
2025-03-28 09:44:19 C 19 50 13.814 -28 17 53.12 V W68
2025-03-29 03:02:37 C 19 50 25.274 -27 30 47.81 V M22
2025-03-29 03:07:13 C 19 50 25.330 -27 30 35.14 V M22
2025-03-29 03:26:19 C 19 50 25.481 -27 29 43.15 V M22
2025-03-29 03:44:30 C 19 50 25.630 -27 28 53.54 V M22
2025-03-30 02:48:50 C 19 50 39.799 -26 25 06.42 V M22
2025-03-30 02:54:09 C 19 50 39.852 -26 24 51.52 V M22
2025-03-30 03:06:51 C 19 50 39.931 -26 24 16.20 V M22
2025-03-30 03:15:23 C 19 50 40.003 -26 23 52.51 V M22
2025-03-30 03:27:15 C 19 50 40.109 -26 23 19.93 V M22
2025-03-30 03:36:25 C 19 50 40.147 -26 22 54.01 V M22
2025-03-30 03:40:21 C 19 50 40.183 -26 22 43.28 V M22
2025-03-30 03:49:00 C 19 50 40.260 -26 22 18.95 V M22
2025-04-01 08:48:30 C 19 51 07.524 -23 51 26.10 V W68
2025-04-01 08:52:32 C 19 51 07.548 -23 51 14.18 V W68
2025-04-01 09:00:26 C 19 51 07.579 -23 50 51.29 V W68
2025-04-01 09:07:58 C 19 51 07.615 -23 50 29.62 V W68
2025-04-04 07:17:18 C 19 51 32.090 -20 21 16.96 V W68
2025-04-04 07:22:02 C 19 51 32.124 -20 21 02.66 V W68
2025-04-04 07:30:05 C 19 51 32.112 -20 20 37.79 V W68
2025-04-04 07:44:50 C 19 51 32.150 -20 19 53.15 V W68
2025-04-05 09:00:49 C 19 51 37.274 -19 01 52.75 V W68
2025-04-05 09:05:27 C 19 51 37.274 -19 01 38.46 V W68
2025-04-05 09:14:44 C 19 51 37.270 -19 01 10.09 V W68
2025-04-05 09:41:57 C 19 51 37.286 -18 59 45.38 V W68
2025-04-05 10:03:17 C 19 51 37.234 -18 58 38.68 V W68
2025-04-08 07:12:58 C 19 51 41.880 -15 17 45.74 V W68
2025-04-08 07:20:57 C 19 51 41.844 -15 17 19.64 V W68
2025-04-08 07:35:30 C 19 51 41.825 -15 16 32.27 V W68
2025-04-12 02:39:32 C 19 51 22.879 -10 10 09.01 V M22
2025-04-12 02:49:20 C 19 51 22.793 -10 09 35.32 V M22
2025-04-12 03:03:49 C 19 51 22.658 -10 08 45.31 V M22
2025-04-12 03:51:39 C 19 51 22.238 -10 06 00.07 V M22
2025-04-13 13:41:10 C 19 51 07.822 -08 08 04.78 V T08
2025-04-13 13:48:29 C 19 51 07.726 -08 07 38.82 V T08
2025-04-13 14:03:07 C 19 51 07.582 -08 06 47.41 V T08