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
2013-11-11 08:10:15 C 02 03 44.02 +45 06 48.1 q 703
2013-11-11 08:18:15 C 02 03 43.33 +45 06 35.0 q 703
2013-11-11 08:26:15 C 02 03 42.47 +45 06 21.8 q 703
2013-11-11 08:34:16 C 02 03 41.51 +45 06 08.5 q 703
2013-11-11 17:58:52 C 02 02 43.78 +44 50 32.0 o C41
2013-11-11 18:46:55 C 02 02 38.78 +44 49 13.4 o C41
2013-11-19 03:55:55 C 01 46 03.96 +39 32 31.3 u H21
2013-11-19 03:58:57 C 01 46 03.69 +39 32 25.7 u H21
2013-11-19 04:01:51 C 01 46 03.43 +39 32 20.3 u H21
2013-11-19 04:04:46 C 01 46 03.20 +39 32 14.6 u H21
2013-11-19 04:07:51 C 01 46 02.91 +39 32 08.6 u H21
2013-11-19 04:16:09 C 01 46 02.24 +39 31 53.0 u H21
2013-11-20 04:04:37 C 01 44 05.13 +38 46 36.4 u H21
2013-11-20 04:09:00 C 01 44 04.76 +38 46 28.2 u H21
2013-11-20 04:13:36 C 01 44 04.38 +38 46 19.1 u H21
2013-11-20 04:19:06 C 01 44 03.92 +38 46 08.8 u H21
2013-11-26 20:24:00 C 01 32 45.28 +33 32 52.7 c A24
2013-11-26 20:25:02 C 01 32 45.17 +33 32 50.5 c A24
2013-11-26 21:25:39 C 01 32 41.37 +33 30 49.6 c A24
2013-11-26 21:26:41 C 01 32 41.29 +33 30 48.2 c A24
2013-11-29 14:57:30 C 01 28 58.36 +31 21 03.0 q D29
2013-11-29 15:24:42 C 01 28 56.85 +31 20 08.9 q D29
2013-11-29 15:51:54 C 01 28 55.39 +31 19 14.7 q D29
2013-12-04 17:06:40 C 01 23 25.69 +27 22 26.2 q A78
2013-12-04 17:12:39 C 01 23 25.45 +27 22 14.9 q A78
2013-12-04 17:19:38 C 01 23 25.21 +27 22 01.2 q A78
2013-12-04 17:29:39 C 01 23 24.82 +27 21 42.0 q A78
2013-12-05 19:51:03 C 01 22 26.33 +26 31 22.2 u J27
2013-12-05 20:06:25 C 01 22 25.77 +26 30 52.9 u J27
2013-12-05 20:15:48 C 01 22 25.40 +26 30 35.5 u J27
2013-12-07 02:33:19 C 01 21 24.27 +25 33 24.0 q 703
2013-12-07 02:42:44 C 01 21 23.98 +25 33 06.4 q 703
2013-12-07 02:52:09 C 01 21 23.64 +25 32 48.9 q 703
2013-12-07 03:01:35 C 01 21 23.35 +25 32 30.8 q 703
2013-12-09 19:56:36 C 01 19 32.19 +23 32 39.6 u J27
2013-12-09 20:05:35 C 01 19 31.96 +23 32 23.3 u J27
2013-12-09 20:23:59 C 01 19 31.49 +23 31 49.7 u J27
2013-12-23 16:56:39 C 01 16 16.13 +14 32 44.2 o C41
2013-12-23 16:58:09 C 01 16 16.11 +14 32 41.6 o C41
2013-12-23 17:40:18 C 01 16 16.18 +14 31 42.0 o C41
2013-12-23 17:41:45 C 01 16 16.23 +14 31 39.7 o C41
2013-12-23 17:43:12 C 01 16 16.22 +14 31 37.9 o C41
2013-12-26 03:30:11 C 01 16 37.11 +13 12 07.9 q 703
2013-12-26 03:40:20 C 01 16 37.19 +13 11 53.7 q 703
2013-12-26 03:50:30 C 01 16 37.27 +13 11 40.3 q 703
2013-12-26 04:00:39 C 01 16 37.33 +13 11 26.7 q 703
2013-12-30 10:34:00 C 01 17 48.39 +11 00 36.7 q D29
2013-12-30 11:01:12 C 01 17 48.75 +11 00 03.7 q D29
2013-12-30 11:31:19 C 01 17 49.11 +10 59 26.9 q D29
2014-01-03 10:45:14 C 01 19 30.72 +09 09 21.5 q D29