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
2024-12-18 00:54:53 C 09 47 29.345 -79 42 28.33 V M22
2024-12-18 00:59:33 C 09 47 30.977 -79 42 37.87 V M22
2024-12-18 01:08:51 C 09 47 34.903 -79 42 56.34 V M22
2024-12-18 01:42:06 C 09 47 48.190 -79 44 03.34 V M22
2024-12-20 07:31:35 C 10 14 04.918 -81 25 45.59 V W68
2024-12-20 07:36:14 C 10 14 07.361 -81 25 53.80 V W68
2024-12-20 08:16:11 C 10 14 29.539 -81 27 05.29 V W68
2024-12-24 06:04:40 C 11 26 19.992 -83 50 15.14 V W68
2024-12-24 06:45:33 C 11 27 00.425 -83 51 06.08 V W68
2024-12-24 07:51:55 C 11 28 06.103 -83 52 27.88 V W68
2024-12-24 08:06:29 C 11 28 20.726 -83 52 45.88 V W68
2024-12-24 08:15:27 C 11 28 29.724 -83 52 56.93 V W68
2024-12-24 08:23:38 C 11 28 37.788 -83 53 06.90 V W68
2024-12-26 01:01:24 C 12 14 39.072 -84 34 58.26 V M22
2024-12-26 01:07:18 C 12 14 46.373 -84 35 03.66 V M22
2024-12-26 01:09:20 C 12 14 48.840 -84 35 05.21 V M22
2024-12-26 01:31:43 C 12 15 16.428 -84 35 24.61 V M22
2024-12-26 01:35:03 C 12 15 20.534 -84 35 27.24 V M22
2024-12-26 01:37:04 C 12 15 22.985 -84 35 29.11 V M22
2024-12-26 01:39:05 C 12 15 25.490 -84 35 30.62 V M22
2024-12-26 01:58:17 C 12 15 49.270 -84 35 47.26 V M22
2024-12-28 07:10:34 C 13 28 41.736 -85 04 36.08 V W68
2024-12-28 07:16:44 C 13 28 50.830 -85 04 37.56 V W68
2024-12-28 07:24:13 C 13 29 01.229 -85 04 39.29 V W68
2024-12-28 07:35:37 C 13 29 17.825 -85 04 42.67 V W68
2024-12-28 08:01:11 C 13 29 54.840 -85 04 49.22 V W68
2024-12-28 08:17:53 C 13 30 18.569 -85 04 53.51 V W68
2024-12-28 08:32:07 C 13 30 38.911 -85 04 57.00 V W68
2024-12-28 08:39:17 C 13 30 49.502 -85 04 58.48 V W68
2024-12-30 01:55:32 C 14 30 17.287 -85 04 10.27 V M22
2024-12-30 01:59:45 C 14 30 22.958 -85 04 09.44 V M22
2024-12-30 02:14:46 C 14 30 44.090 -85 04 06.20 V M22
2024-12-30 02:27:48 C 14 31 01.558 -85 04 03.29 V M22
2025-01-01 08:07:48 C 15 39 28.872 -84 36 26.06 V W68
2025-01-01 08:15:48 C 15 39 37.762 -84 36 20.38 V W68
2025-01-01 08:36:54 C 15 40 01.452 -84 36 05.18 V W68
2025-01-03 01:51:00 C 16 21 33.074 -83 59 59.17 V M22
2025-01-03 01:53:43 C 16 21 35.090 -83 59 56.65 V M22
2025-01-03 01:59:10 C 16 21 39.886 -83 59 51.54 V M22
2025-01-03 02:05:16 C 16 21 45.305 -83 59 45.28 V M22
2025-01-03 02:23:45 C 16 22 01.682 -83 59 29.08 V M22
2025-01-03 02:32:33 C 16 22 08.645 -83 59 19.61 V M22
2025-03-15 09:15:15 C 19 45 05.926 -40 49 59.84 V W68
2025-03-15 09:24:50 C 19 45 06.108 -40 49 39.36 V W68
2025-03-15 09:28:55 C 19 45 06.182 -40 49 30.61 V W68
2025-03-15 09:36:59 C 19 45 06.355 -40 49 13.66 V W68
2025-03-19 08:07:24 C 19 46 57.470 -37 19 48.50 V W68
2025-03-19 08:08:03 C 19 46 57.485 -37 19 47.03 V W68
2025-03-19 08:12:18 C 19 46 57.586 -37 19 37.34 V W68
2025-03-19 08:12:57 C 19 46 57.571 -37 19 35.94 V W68