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
2024-11-16 00:44:25 C 07 54 26.940 -41 30 25.20 V M22
2024-11-16 00:51:09 C 07 54 27.324 -41 30 49.75 V M22
2024-11-16 01:01:21 C 07 54 28.008 -41 31 27.95 V M22
2024-11-16 01:02:40 C 07 54 28.116 -41 31 32.81 V M22
2024-11-16 01:05:55 C 07 54 28.325 -41 31 44.72 V M22
2024-11-16 01:20:29 C 07 54 29.292 -41 32 37.64 V M22
2024-11-18 06:59:30 C 07 58 21.612 -44 47 57.48 V W68
2024-11-18 07:02:09 C 07 58 21.814 -44 48 07.06 V W68
2024-11-18 07:06:09 C 07 58 22.087 -44 48 21.71 V W68
2024-11-18 07:30:50 C 07 58 23.820 -44 49 51.28 V W68
2024-11-22 06:50:11 C 08 05 40.598 -50 30 33.80 V W68
2024-11-22 07:11:41 C 08 05 42.230 -50 31 49.69 V W68
2024-11-22 07:14:19 C 08 05 42.442 -50 31 59.09 V W68
2024-11-22 07:23:05 C 08 05 43.104 -50 32 29.76 V W68
2024-11-24 00:08:02 C 08 09 02.270 -52 54 26.68 V M22
2024-11-24 00:14:34 C 08 09 02.760 -52 54 49.32 V M22
2024-11-24 00:19:09 C 08 09 03.139 -52 55 04.98 V M22
2024-11-24 00:21:45 C 08 09 03.358 -52 55 14.02 V M22
2024-11-24 00:23:42 C 08 09 03.485 -52 55 21.11 V M22
2024-11-24 00:42:09 C 08 09 04.956 -52 56 24.79 V M22
2024-11-30 07:56:44 C 08 22 59.654 -61 16 23.27 V W68
2024-11-30 08:18:28 C 08 23 01.764 -61 17 31.85 V W68
2024-11-30 08:22:28 C 08 23 02.138 -61 17 44.56 V W68
2024-12-04 06:23:48 C 08 33 40.930 -66 02 53.52 V W68
2024-12-04 06:27:05 C 08 33 41.309 -66 03 02.74 V W68
2024-12-04 06:31:44 C 08 33 41.909 -66 03 17.03 V W68
2024-12-04 06:52:10 C 08 33 44.258 -66 04 16.75 V W68
2024-12-04 06:57:30 C 08 33 44.981 -66 04 32.41 V W68
2024-12-04 07:00:09 C 08 33 45.307 -66 04 40.12 V W68
2024-12-04 07:00:48 C 08 33 45.312 -66 04 41.92 V W68
2024-12-04 07:04:48 C 08 33 45.830 -66 04 53.62 V W68
2024-12-08 06:41:56 C 08 47 16.582 -70 32 11.83 V W68
2024-12-08 06:45:52 C 08 47 17.227 -70 32 22.60 V W68
2024-12-08 06:57:44 C 08 47 19.020 -70 32 54.10 V W68
2024-12-08 07:57:17 C 08 47 28.116 -70 35 33.36 V W68
2024-12-08 08:04:51 C 08 47 29.230 -70 35 53.92 V W68
2024-12-08 08:26:02 C 08 47 32.678 -70 36 50.00 V W68
2024-12-10 00:18:36 C 08 54 24.898 -72 21 06.48 V M22
2024-12-10 01:21:16 C 08 54 36.005 -72 23 47.98 V M22
2024-12-10 01:25:14 C 08 54 36.674 -72 23 57.91 V M22
2024-12-10 01:26:32 C 08 54 36.914 -72 24 01.30 V M22
2024-12-10 02:10:33 C 08 54 44.594 -72 25 54.34 V M22
2024-12-12 07:33:54 C 09 05 34.529 -74 38 36.96 V W68
2024-12-12 07:39:52 C 09 05 35.875 -74 38 51.14 V W68
2024-12-12 07:47:48 C 09 05 37.562 -74 39 10.58 V W68
2024-12-12 08:10:26 C 09 05 42.418 -74 40 05.41 V W68
2024-12-16 06:45:08 C 09 31 40.385 -78 15 21.60 V W68
2024-12-16 06:49:46 C 09 31 41.935 -78 15 31.46 V W68
2024-12-16 07:19:17 C 09 31 51.514 -78 16 35.08 V W68
2024-12-16 07:27:05 C 09 31 54.084 -78 16 51.82 V W68