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
2010-06-29 20:29:13 C 15 27 14.97 +49 32 41.5 r 585
2010-06-29 20:37:00 C 15 27 14.64 +49 32 39.7 r 585
2010-06-29 20:39:51 C 15 27 14.53 +49 32 39.1 r 585
2010-06-29 20:46:16 C 15 27 14.28 +49 32 38.0 r 585
2010-06-29 20:50:59 C 15 27 14.03 +49 32 36.8 r 585
2010-06-29 20:54:00 C 15 27 13.88 +49 32 36.3 r 585
2010-06-29 21:00:32 C 15 27 13.63 +49 32 35.0 r 585
2010-07-01 05:19:57 C 15 26 01.58 +49 25 28.6 18.2 c 704
2010-07-01 05:35:23 C 15 26 00.98 +49 25 24.8 18.5 c 704
2010-07-01 05:50:43 C 15 26 00.36 +49 25 21.0 18.5 c 704
2010-07-01 06:06:03 C 15 25 59.80 +49 25 16.9 18.7 c 704
2010-07-01 06:21:23 C 15 25 59.26 +49 25 13.2 18.8 c 704
2010-07-02 22:42:04 C 15 24 41.07 +49 15 23.8 u A06
2010-07-02 23:27:14 C 15 24 39.60 +49 15 11.9 u A06
2010-07-08 00:01:43 S 15 21 57.590 +48 41 03.98 L C51
2010-07-08 03:12:14 S 15 21 54.638 +48 40 05.12 L C51
2010-07-08 06:22:45 S 15 21 51.72 +48 39 06.1 L C51
2010-07-08 09:33:16 S 15 21 48.88 +48 38 07.0 L C51
2010-07-08 11:08:26 S 15 21 47.50 +48 37 37.3 L C51
2010-07-08 12:43:47 S 15 21 46.11 +48 37 07.5 L C51
2010-07-08 15:54:07 S 15 21 43.43 +48 36 07.9 L C51
2010-07-08 15:54:18 S 15 21 43.39 +48 36 07.7 L C51
2010-07-08 17:29:28 S 15 21 42.06 +48 35 37.8 L C51
2010-07-08 19:04:38 S 15 21 40.76 +48 35 07.9 L C51
2010-07-08 20:39:59 S 15 21 39.48 +48 34 38.0 L C51
2010-07-08 21:52:25 C 15 21 37.80 +48 34 17.8 w B09
2010-07-08 22:02:38 C 15 21 37.58 +48 34 14.7 w B09
2010-07-08 22:15:09 S 15 21 38.19 +48 34 07.7 L C51
2010-07-08 23:50:30 S 15 21 36.88 +48 33 37.6 L C51
2010-07-09 01:25:40 S 15 21 35.65 +48 33 07.7 L C51
2010-07-09 03:01:01 S 15 21 34.39 +48 32 37.2 L C51
2010-07-09 04:36:11 S 15 21 33.20 +48 32 07.0 L C51
2010-07-09 06:11:32 S 15 21 31.98 +48 31 36.7 L C51
2010-07-09 07:46:43 S 15 21 30.77 +48 31 07.0 L C51
2010-07-09 09:21:52 S 15 21 29.64 +48 30 35.9 L C51
2010-07-09 09:22:03 S 15 21 29.61 +48 30 35.6 L C51
2010-07-09 10:57:13 S 15 21 28.45 +48 30 05.2 L C51
2010-07-09 12:32:24 S 15 21 27.32 +48 29 34.3 L C51
2010-07-09 15:42:54 S 15 21 25.06 +48 28 34.3 L C51
2010-07-09 18:53:25 S 15 21 22.87 +48 27 32.1 L C51
2010-07-09 22:03:57 S 15 21 20.77 +48 26 29.7 L C51
2010-07-10 01:14:27 S 15 21 18.74 +48 25 28.7 L C51
2010-07-30 22:19:36 C 15 26 19.18 +45 17 24.0 u J28
2010-07-30 23:01:27 C 15 26 20.25 +45 17 07.1 u J28
2010-08-20 04:09:40 C 15 45 08.12 +41 58 22.8 19.0 c 704
2010-08-20 04:28:32 C 15 45 09.00 +41 58 14.8 19.1 c 704
2010-08-20 04:47:27 C 15 45 09.89 +41 58 06.5 19.2 c 704
2010-09-01 19:32:32 C 16 01 36.22 +39 57 06.2 u B38
2010-09-01 19:39:14 C 16 01 36.59 +39 57 04.1 u B38
2010-09-01 19:46:48 C 16 01 37.00 +39 57 01.1 u B38