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
2022-01-13 03:04:21 C 22 36 04.14 +34 23 16.7 V G96
2022-01-13 03:11:21 C 22 36 04.79 +34 23 13.6 V G96
2022-10-07 01:51:05 C 08 29 45.811 -17 19 40.12 V M22
2022-10-07 01:53:02 C 08 29 46.082 -17 19 44.47 V M22
2022-10-07 02:00:49 C 08 29 47.230 -17 20 01.36 V M22
2022-10-07 02:02:48 C 08 29 47.515 -17 20 05.64 V M22
2022-10-07 02:15:30 C 08 29 49.361 -17 20 33.32 V M22
2022-10-07 02:18:06 C 08 29 49.702 -17 20 39.66 V M22
2022-10-07 02:21:20 C 08 29 50.186 -17 20 46.64 V M22
2022-10-07 02:23:57 C 08 29 50.532 -17 20 52.62 V M22
2022-10-07 08:31:04 C 08 30 44.023 -17 34 20.82 V W68
2022-10-07 08:38:53 C 08 30 45.149 -17 34 38.10 V W68
2022-10-07 08:59:42 C 08 30 48.161 -17 35 23.68 V W68
2022-10-07 09:04:16 C 08 30 48.814 -17 35 33.14 V W68
2022-10-14 08:21:20 C 08 56 31.445 -23 51 03.20 V W68
2022-10-14 08:35:28 C 08 56 33.742 -23 51 35.64 V W68
2022-10-14 08:37:25 C 08 56 34.075 -23 51 39.89 V W68
2022-10-14 08:43:21 C 08 56 34.987 -23 51 53.57 V W68
2022-10-14 08:50:37 C 08 56 36.161 -23 52 10.27 V W68
2022-10-14 08:53:12 C 08 56 36.583 -23 52 16.00 V W68
2022-10-14 08:55:48 C 08 56 37.051 -23 52 21.97 V W68
2022-10-14 09:07:31 C 08 56 38.863 -23 52 48.76 V W68
2022-10-20 01:55:45 C 09 19 52.810 -29 03 23.87 V M22
2022-10-20 01:59:38 C 09 19 53.506 -29 03 32.98 V M22
2022-10-20 02:07:09 C 09 19 54.809 -29 03 49.86 V M22
2022-10-20 02:32:35 C 09 19 59.321 -29 04 47.39 V M22
2022-10-30 08:07:19 C 10 07 45.226 -37 55 45.84 V W68
2022-10-30 08:15:08 C 10 07 46.874 -37 56 02.47 V W68
2022-10-30 08:32:45 C 10 07 50.587 -37 56 38.36 V W68
2022-10-30 08:47:22 C 10 07 53.681 -37 57 08.21 V W68
2022-11-01 07:56:17 C 10 18 03.986 -39 30 48.46 V W68
2022-11-01 08:09:15 C 10 18 06.799 -39 31 13.69 V W68
2022-11-01 08:46:12 C 10 18 14.880 -39 32 25.91 V W68
2023-04-02 08:51:28 C 19 53 35.059 +11 22 39.61 V W68
2023-04-02 08:56:07 C 19 53 35.294 +11 22 49.01 V W68
2023-04-02 09:17:39 C 19 53 36.535 +11 23 34.12 V W68
2023-04-04 09:22:53 C 19 56 19.435 +13 03 56.09 V W68
2023-04-04 09:29:47 C 19 56 19.776 +13 04 10.70 V W68
2023-04-04 09:54:36 C 19 56 21.120 +13 05 01.93 V W68
2023-04-07 14:46:54 C 20 00 31.627 +15 46 00.77 V T05
2023-04-07 15:10:22 C 20 00 32.774 +15 46 50.70 V T05
2023-04-07 15:14:17 C 20 00 33.038 +15 46 58.73 V T05
2023-04-07 15:19:04 C 20 00 33.259 +15 47 08.27 V T05
2023-04-23 13:34:27 C 20 17 54.754 +29 05 23.06 V T05
2023-04-23 13:39:03 C 20 17 54.919 +29 05 32.57 V T05
2023-04-23 13:46:24 C 20 17 55.174 +29 05 47.80 V T05
2023-04-23 14:01:01 C 20 17 55.706 +29 06 17.82 V T05
2023-05-08 13:26:27 C 20 27 45.842 +40 54 46.69 V T05
2023-05-08 13:31:00 C 20 27 45.902 +40 54 55.48 V T05
2023-05-08 13:45:31 C 20 27 46.128 +40 55 22.33 V T05