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
2023-05-08 13:56:08 C 20 27 46.313 +40 55 42.17 V T05
2023-05-24 13:49:20 C 20 28 17.225 +51 58 34.93 V T05
2023-05-24 13:58:31 C 20 28 16.994 +51 58 48.97 V T05
2023-05-24 14:02:27 C 20 28 16.994 +51 58 54.52 V T05
2023-05-24 14:07:01 C 20 28 16.951 +51 59 02.33 V T05
2023-05-26 12:25:40 C 20 27 25.558 +53 10 27.44 V T05
2023-05-26 12:48:17 C 20 27 25.049 +53 11 02.04 V T05
2023-05-26 12:54:27 C 20 27 24.871 +53 11 11.00 V T05
2023-05-26 13:07:09 C 20 27 24.523 +53 11 30.44 V T05
2023-06-07 13:04:26 C 20 16 25.699 +59 46 59.99 V T05
2023-06-07 13:33:03 C 20 16 23.952 +59 47 33.79 V T05
2023-06-07 13:36:57 C 20 16 23.868 +59 47 38.58 V T05
2023-06-07 13:43:32 C 20 16 23.369 +59 47 47.26 V T05
2023-06-15 11:46:27 C 20 03 01.692 +63 18 19.51 V T05
2023-06-15 11:51:21 C 20 03 01.087 +63 18 24.77 V T05
2023-06-15 11:59:13 C 20 03 00.655 +63 18 32.47 V T05
2023-06-15 12:06:31 C 20 02 59.854 +63 18 40.03 V T05
2023-06-19 11:43:00 C 19 54 15.545 +64 47 42.14 V T05
2023-06-19 11:48:47 C 19 54 15.000 +64 47 46.93 V T05
2023-06-19 11:59:53 C 19 54 13.877 +64 47 57.66 V T05
2023-06-19 12:12:57 C 19 54 12.554 +64 48 08.39 V T05
2023-06-21 11:42:26 C 19 49 22.490 +65 27 54.29 V T05
2023-06-21 11:49:53 C 19 49 21.727 +65 28 00.30 V T05
2023-06-21 11:52:30 C 19 49 21.408 +65 28 02.10 V T05
2023-06-21 11:55:06 C 19 49 21.086 +65 28 04.48 V T05
2023-06-21 11:59:41 C 19 49 20.537 +65 28 08.44 V T05
2023-06-21 12:12:24 C 19 49 19.162 +65 28 17.40 V T05
2023-06-23 08:35:40 C 19 44 31.056 +66 02 40.52 V 703
2023-06-23 08:42:23 C 19 44 30.217 +66 02 45.20 V 703
2023-06-23 08:49:06 C 19 44 29.368 +66 02 50.21 V 703
2023-06-27 09:53:22 C 19 33 05.623 +67 08 37.54 V 703
2023-06-27 10:02:23 C 19 33 04.482 +67 08 42.86 V 703
2023-06-27 10:11:23 C 19 33 03.413 +67 08 47.83 V 703
2023-06-27 10:20:21 C 19 33 02.365 +67 08 53.16 V 703
2023-08-06 08:17:40 C 17 40 59.988 +67 14 04.99 V T05
2023-08-06 08:22:13 C 17 40 59.700 +67 14 03.34 V T05
2023-08-06 08:26:25 C 17 40 59.402 +67 14 00.89 V T05
2023-08-06 08:30:35 C 17 40 59.230 +67 13 58.98 V T05
2023-09-23 03:26:20 C 17 49 10.909 +55 37 24.67 V G96
2023-09-23 03:33:25 C 17 49 11.320 +55 37 19.96 V G96
2023-09-23 03:40:30 C 17 49 11.665 +55 37 15.49 V G96
2023-09-23 03:47:37 C 17 49 12.068 +55 37 10.63 V G96
2023-10-03 04:07:06 C 18 04 07.252 +52 59 28.57 V G96
2023-10-03 04:14:37 C 18 04 07.792 +52 59 23.68 V G96
2023-10-03 04:22:08 C 18 04 08.245 +52 59 18.71 V G96
2023-10-03 04:29:39 C 18 04 08.771 +52 59 13.74 V G96
2023-10-20 02:23:01 C 18 34 52.014 +48 41 22.88 V G96
2023-10-20 02:31:24 C 18 34 52.691 +48 41 17.56 V G96
2023-10-20 02:39:47 C 18 34 53.396 +48 41 12.34 V G96
2023-10-20 02:48:12 C 18 34 54.070 +48 41 07.08 V G96