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
2025-07-07 23:20:40 C 16 35 32.738 +58 59 41.86 V R17
2025-07-07 23:40:20 C 16 35 31.058 +58 59 37.57 V R17
2025-07-08 00:00:01 C 16 35 29.467 +58 59 31.67 V R17
2025-07-09 08:33:21 C 16 32 57.794 +58 50 35.88 V T08
2025-07-09 08:37:18 C 16 32 57.384 +58 50 34.98 V T08
2025-07-09 08:46:35 C 16 32 56.818 +58 50 32.35 V T08
2025-07-09 09:03:49 C 16 32 55.378 +58 50 26.95 V T08
2025-07-13 08:13:01 C 16 26 27.442 +58 19 48.65 V T08
2025-07-13 08:17:40 C 16 26 27.151 +58 19 46.49 V T08
2025-07-13 08:28:41 C 16 26 26.448 +58 19 42.42 V T08
2025-07-13 08:36:36 C 16 26 25.927 +58 19 40.12 V T08
2025-07-13 08:40:39 C 16 26 25.704 +58 19 37.78 V T08
2025-07-13 08:44:36 C 16 26 25.536 +58 19 36.55 V T08
2025-07-13 08:49:16 C 16 26 25.118 +58 19 34.64 V T08
2025-07-22 22:47:39 C 16 16 03.557 +56 44 44.02 V R17
2025-07-22 23:07:23 C 16 16 02.914 +56 44 34.73 V R17
2025-07-22 23:27:08 C 16 16 02.292 +56 44 25.15 V R17
2025-07-22 23:46:54 C 16 16 01.627 +56 44 16.30 V R17
2025-07-25 09:27:06 C 16 14 30.022 +56 17 11.58 V T05
2025-07-25 09:35:11 C 16 14 29.652 +56 17 06.79 V T05
2025-07-25 09:40:50 C 16 14 29.520 +56 17 04.42 V T05
2025-07-25 09:57:42 C 16 14 29.102 +56 16 56.24 V T05
2025-07-25 22:43:13 C 16 14 12.370 +56 10 49.62 V R17
2025-07-25 23:02:55 C 16 14 11.885 +56 10 39.76 V R17
2025-07-25 23:22:36 C 16 14 11.402 +56 10 30.04 V R17
2025-07-25 23:42:19 C 16 14 10.987 +56 10 20.10 V R17
2025-07-29 06:56:10 C 16 12 50.442 +55 31 25.24 X F52
2025-07-29 07:12:36 C 16 12 50.183 +55 31 16.94 X F52
2025-07-29 07:29:05 C 16 12 49.938 +55 31 08.56 X F52
2025-07-29 07:45:35 C 16 12 49.688 +55 31 00.21 X F52
2025-07-31 22:36:49 C 16 12 14.520 +54 59 10.79 V R17
2025-07-31 22:56:37 C 16 12 14.328 +54 59 00.28 V R17
2025-07-31 23:16:25 C 16 12 14.186 +54 58 50.34 V R17
2025-07-31 23:36:12 C 16 12 14.021 +54 58 39.94 V R17
2025-08-02 07:03:36 C 16 12 05.810 +54 42 31.15 X F51
2025-08-02 07:21:35 C 16 12 05.719 +54 42 21.80 X F51
2025-08-02 07:39:35 C 16 12 05.615 +54 42 12.32 X F51
2025-08-16 08:09:31 C 16 15 58.068 +51 43 34.68 V T08
2025-08-16 08:21:32 C 16 15 58.346 +51 43 28.09 V T08
2025-08-16 08:33:33 C 16 15 58.658 +51 43 21.40 V T08
2025-08-16 08:45:35 C 16 15 58.954 +51 43 15.02 V T08
2025-08-19 22:16:43 C 16 18 19.109 +50 57 08.57 V R17
2025-08-19 22:47:04 C 16 18 20.002 +50 56 51.83 V R17
2025-08-19 23:10:53 C 16 18 20.669 +50 56 38.47 V R17
2025-08-19 23:32:58 C 16 18 21.319 +50 56 26.81 V R17
2025-08-24 03:06:03 C 16 21 40.230 +50 02 52.73 V G96
2025-08-24 03:14:12 C 16 21 40.532 +50 02 48.44 V G96
2025-08-24 03:22:22 C 16 21 40.813 +50 02 43.91 V G96
2025-08-24 03:30:31 C 16 21 41.080 +50 02 39.52 V G96
2025-09-10 03:40:54 C 16 40 48.659 +46 28 17.36 V G96