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
2011-11-16 07:07:07 C 03 40 49.47 +21 06 38.1 r G96
2011-11-16 07:17:12 C 03 40 48.18 +21 06 14.6 r G96
2011-11-17 09:12:23 C 03 37 35.20 +20 05 11.5 16.3 c 704
2011-11-17 09:30:24 C 03 37 32.88 +20 04 28.6 16.6 c 704
2011-11-17 09:48:55 C 03 37 30.55 +20 03 44.3 16.9 c 704
2011-11-17 10:07:00 C 03 37 28.27 +20 03 00.8 17.0 c 704
2011-11-17 10:25:46 C 03 37 25.97 +20 02 15.9 18.1 c 704
2011-11-18 20:57:36 C 03 33 08.78 +18 38 57.4 u 089
2011-11-18 20:59:48 C 03 33 08.48 +18 38 51.8 u 089
2011-11-18 21:02:00 C 03 33 08.22 +18 38 46.6 u 089
2011-11-18 21:04:12 C 03 33 07.94 +18 38 41.1 u 089
2011-11-18 21:06:24 C 03 33 07.66 +18 38 35.9 u 089
2011-11-18 21:08:36 C 03 33 07.37 +18 38 30.4 u 089
2011-11-18 21:10:48 C 03 33 07.10 +18 38 25.1 u 089
2011-11-18 21:13:00 C 03 33 06.80 +18 38 19.4 u 089
2011-11-18 21:15:12 C 03 33 06.54 +18 38 14.1 u 089
2011-11-18 21:17:24 C 03 33 06.26 +18 38 08.8 u 089
2011-11-22 00:51:59 C 03 23 41.10 +15 29 36.0 t 130
2011-11-22 00:55:35 C 03 23 40.66 +15 29 26.8 t 130
2011-11-22 01:00:40 C 03 23 40.01 +15 29 13.8 t 130
2011-11-22 01:05:44 C 03 23 39.37 +15 29 01.0 t 130
2011-11-23 03:46:54 C 03 20 21.91 +14 20 55.6 r 703
2011-11-23 04:01:35 C 03 20 20.00 +14 20 17.9 r 703
2011-11-23 04:16:20 C 03 20 18.20 +14 19 40.7 r 703
2011-11-23 04:31:09 C 03 20 16.33 +14 19 02.6 r 703
2011-11-24 06:48:03 C 03 17 02.517 +13 11 26.86 L F51
2011-11-24 07:04:43 C 03 17 00.430 +13 10 43.96 L F51
2011-11-24 07:23:13 C 03 16 58.112 +13 09 56.26 L F51
2011-11-24 07:39:20 C 03 16 56.091 +13 09 14.74 L F51
2011-11-24 23:37:28 C 03 14 58.50 +12 27 53.0 t 130
2011-11-24 23:39:25 C 03 14 58.27 +12 27 48.1 t 130
2011-11-24 23:41:21 C 03 14 58.03 +12 27 43.2 t 130
2011-11-24 23:43:06 C 03 14 57.80 +12 27 38.5 t 130
2011-11-25 00:39:04 C 03 14 50.87 +12 25 13.7 r 203
2011-11-25 01:03:52 C 03 14 47.79 +12 24 09.2 r 203
2011-11-28 05:00:57 C 03 05 42.69 +09 07 16.8 16.5 c 704
2011-11-28 05:19:35 C 03 05 40.46 +09 06 28.9 16.7 c 704
2011-11-28 05:38:18 C 03 05 38.21 +09 05 40.6 16.8 c 704
2011-11-28 05:56:57 C 03 05 35.96 +09 04 52.0 16.6 c 704
2011-11-28 06:15:37 C 03 05 33.72 +09 04 04.0 16.5 c 704
2011-11-29 05:00:29 C 03 02 54.99 +08 05 19.2 r 703
2011-11-29 05:09:21 C 03 02 53.91 +08 04 56.3 r 703
2011-11-29 05:18:09 C 03 02 52.90 +08 04 33.6 r 703
2011-11-29 05:26:59 C 03 02 51.86 +08 04 11.1 r 703
2011-12-27 03:35:29 C 02 09 32.11 -14 14 31.4 r 703
2011-12-27 03:45:04 C 02 09 31.68 -14 14 44.0 r 703
2011-12-27 03:54:48 C 02 09 31.24 -14 14 56.1 r 703
2011-12-27 04:04:23 C 02 09 30.81 -14 15 09.5 r 703
2012-01-05 01:40:16 C 02 03 18.42 -18 13 36.9 17.9 c 704
2012-01-05 02:18:12 C 02 03 17.67 -18 14 13.2 17.9 c 704