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
2012-01-05 02:38:06 C 02 03 17.24 -18 14 32.7 18.2 c 704
2012-02-14 10:24:42 C 02 18 02.87 -27 19 56.9 r E12
2012-02-14 10:47:23 C 02 18 03.76 -27 20 05.1 r E12
2012-06-21 19:57:25 C 11 51 08.24 +07 02 29.9 u B38
2012-06-21 20:03:49 C 11 51 09.67 +07 02 43.7 u B38
2012-06-21 20:10:10 C 11 51 11.07 +07 02 56.3 u B38
2012-06-21 20:17:19 C 11 51 12.61 +07 03 13.3 u B38
2012-07-09 20:20:24 C 13 04 15.61 +17 14 42.6 u B38
2012-07-09 20:25:06 C 13 04 16.17 +17 14 46.8 u B38
2012-07-09 20:30:19 C 13 04 16.92 +17 14 51.1 u B38
2012-07-09 20:35:50 C 13 04 17.66 +17 14 56.0 u B38
2012-07-09 20:40:41 C 13 04 18.29 +17 14 59.8 u B38
2012-07-13 04:16:30 C 13 14 29.31 +18 16 41.9 18.0 c 704
2012-07-13 04:31:44 C 13 14 31.16 +18 16 52.4 18.2 c 704
2012-07-13 04:46:50 C 13 14 32.94 +18 17 03.1 18.2 c 704
2012-07-13 05:02:00 C 13 14 34.82 +18 17 13.1 18.3 c 704
2012-07-18 20:12:27 C 13 30 27.62 +19 39 35.1 u B38
2012-07-18 20:19:10 C 13 30 28.47 +19 39 38.8 u B38
2012-07-18 20:25:15 C 13 30 29.16 +19 39 41.7 u B38
2012-07-18 20:30:56 C 13 30 29.74 +19 39 43.5 u B38
2012-07-18 20:37:30 C 13 30 30.44 +19 39 47.7 u B38
2012-07-26 19:56:19 C 13 50 43.83 +21 00 19.4 u B38
2012-07-26 20:02:38 C 13 50 44.49 +21 00 20.2 u B38
2012-07-26 20:08:53 C 13 50 45.11 +21 00 23.0 u B38
2012-07-26 20:15:43 C 13 50 45.84 +21 00 25.2 u B38
2012-07-26 20:23:15 C 13 50 46.57 +21 00 27.9 u B38
2012-08-02 03:09:16 C 14 05 24.28 +21 42 25.0 t H21
2012-08-02 03:16:17 C 14 05 24.94 +21 42 26.9 t H21
2012-08-02 03:23:17 C 14 05 25.59 +21 42 28.3 t H21
2012-08-02 03:29:48 C 14 05 26.21 +21 42 30.0 t H21
2012-09-19 02:46:15 C 15 44 17.41 +22 29 43.9 r 703
2012-09-19 02:51:14 C 15 44 17.80 +22 29 44.1 r 703
2012-09-19 02:56:11 C 15 44 18.27 +22 29 44.8 r 703
2012-09-19 03:01:07 C 15 44 18.60 +22 29 44.2 r 703
2013-09-24 14:14:45 C 03 50 50.997 +57 52 49.89 L F51
2013-09-24 14:25:40 C 03 50 50.599 +57 52 50.09 L F51
2013-10-20 07:27:15 C 03 04 41.12 +55 11 38.2 u H21
2013-10-20 07:32:05 C 03 04 40.61 +55 11 35.2 u H21
2013-10-20 07:38:05 C 03 04 39.89 +55 11 31.7 u H21
2013-10-22 06:39:19 C 02 59 23.80 +54 39 25.9 u H21
2013-10-22 06:46:06 C 02 59 22.99 +54 39 21.1 u H21
2013-10-22 06:53:17 C 02 59 22.04 +54 39 16.9 u H21
2013-11-03 21:43:11 C 02 23 36.03 +49 32 09.1 q Z81
2013-11-03 22:14:37 C 02 23 32.31 +49 31 27.9 q Z81
2013-11-03 22:46:03 C 02 23 28.50 +49 30 46.6 q Z81
2013-11-06 22:42:42 C 02 15 11.99 +47 50 48.2 c A24
2013-11-06 22:44:47 C 02 15 11.81 +47 50 44.7 c A24
2013-11-06 23:13:00 C 02 15 08.52 +47 50 03.7 c A24
2013-11-06 23:56:09 C 02 15 03.56 +47 49 00.5 c A24
2013-11-06 23:58:13 C 02 15 03.32 +47 48 57.6 c A24