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
2010-05-20 00:42:21 C 17 47 39.32 +32 39 30.0 r J75
2010-05-20 01:00:55 C 17 47 34.28 +32 40 53.3 r J75
2010-05-20 10:20:34 C 17 45 05.87 +33 21 55.5 c 926
2010-05-20 10:38:10 C 17 45 01.12 +33 23 11.3 c 926
2010-05-20 10:55:05 C 17 44 56.56 +33 24 24.2 c 926
2010-05-23 01:12:31 C 17 28 57.77 +37 25 31.3 15.3 c B06
2010-05-23 01:16:40 C 17 28 56.69 +37 25 44.1 15.3 c B06
2010-05-23 01:21:44 C 17 28 55.38 +37 26 01.7 15.4 c B06
2010-05-23 01:26:25 C 17 28 54.25 +37 26 16.6 15.4 c B06
2010-05-23 01:30:31 C 17 28 53.10 +37 26 30.3 15.4 c B06
2010-05-23 01:33:55 C 17 28 52.32 +37 26 43.1 15.3 c B06
2010-05-23 01:37:19 C 17 28 51.38 +37 26 56.1 15.4 c B06
2010-05-24 01:52:21 C 17 22 51.32 +38 46 45.9 w B19
2010-05-24 01:55:36 C 17 22 50.52 +38 46 56.2 w B19
2010-05-24 01:58:16 C 17 22 49.83 +38 47 04.5 w B19
2010-05-24 08:16:49 C 17 21 17.96 +39 06 44.5 r 703
2010-05-24 08:23:28 C 17 21 16.30 +39 07 05.2 r 703
2010-05-24 08:30:16 C 17 21 14.58 +39 07 26.3 r 703
2010-05-25 00:13:00 C 17 17 28.11 +39 54 11.5 u J51
2010-05-25 00:22:37 C 17 17 25.73 +39 54 39.5 u J51
2010-05-25 00:32:14 C 17 17 23.39 +39 55 07.6 u J51
2010-06-03 08:50:09 C 16 30 35.68 +47 00 30.0 u 448
2010-06-03 08:56:20 C 16 30 34.57 +47 00 36.8 u 448
2010-06-03 09:02:29 C 16 30 33.45 +47 00 43.7 u 448
2010-06-03 09:08:39 C 16 30 32.33 +47 00 50.4 u 448
2010-06-03 09:14:49 C 16 30 31.21 +47 00 57.3 u 448
2010-06-05 00:47:59 C 16 23 45.92 +47 41 45.1 w B19
2010-06-05 00:52:15 C 16 23 45.20 +47 41 48.8 w B19
2010-06-05 00:58:43 C 16 23 44.06 +47 41 55.2 w B19
2010-06-05 22:19:01 C 16 20 16.82 +48 00 55.3 o 196
2010-06-05 22:32:17 C 16 20 14.67 +48 01 06.6 o 196
2010-06-05 22:43:20 C 16 20 12.88 +48 01 15.9 o 196
2010-06-06 07:40:09 C 16 18 47.70 +48 08 43.5 r 703
2010-06-06 07:49:09 C 16 18 46.22 +48 08 50.5 r 703
2010-06-06 07:58:16 C 16 18 44.74 +48 08 57.8 r 703
2010-06-06 08:07:21 C 16 18 43.27 +48 09 05.1 r 703
2010-06-07 21:58:03 C 16 12 59.81 +48 36 44.9 c 585
2010-06-07 22:10:05 C 16 12 57.93 +48 36 52.3 c 585
2010-06-07 22:14:51 C 16 12 57.24 +48 36 55.7 c 585
2010-06-07 22:18:26 C 16 12 56.67 +48 36 58.5 c 585
2010-06-07 22:28:43 C 16 12 55.12 +48 37 05.0 c 585
2010-06-07 22:34:00 C 16 12 54.32 +48 37 08.1 c 585
2010-06-07 22:41:28 C 16 12 53.23 +48 37 13.2 c 585
2010-06-07 23:01:59 C 16 12 50.15 +48 37 26.6 c 585
2010-06-07 23:06:42 C 16 12 49.50 +48 37 29.1 c 585
2010-06-07 23:10:11 C 16 12 48.90 +48 37 31.6 c 585
2010-06-07 23:15:00 C 16 12 48.18 +48 37 34.1 c 585
2010-06-07 23:18:52 C 16 12 47.65 +48 37 36.9 c 585
2010-06-07 23:26:25 C 16 12 46.52 +48 37 41.8 c 585
2010-06-07 23:30:50 C 16 12 45.86 +48 37 44.6 c 585