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
2023-10-23 05:12:00 C 18 41 07.632 +47 55 43.63 X F51
2023-10-23 05:27:12 C 18 41 08.900 +47 55 34.28 X F51
2023-10-23 05:42:22 C 18 41 10.162 +47 55 25.01 X F51
2023-10-23 05:57:12 C 18 41 11.402 +47 55 15.93 X F51
2023-11-02 03:03:04 C 19 01 57.853 +45 35 40.09 V G96
2023-11-02 03:12:09 C 19 01 58.688 +45 35 34.40 V G96
2023-11-02 03:21:15 C 19 01 59.398 +45 35 30.08 V G96
2023-11-02 03:30:22 C 19 02 00.272 +45 35 24.43 V G96
2024-09-12 14:47:37 C 06 11 57.629 +19 51 51.80 V T05
2024-09-12 14:53:30 C 06 11 58.063 +19 51 45.58 V T05
2024-09-12 15:03:58 C 06 11 58.810 +19 51 35.53 V T05
2024-09-12 15:11:36 C 06 11 59.335 +19 51 27.76 V T05
2024-09-13 14:18:33 C 06 13 37.805 +19 27 15.77 V T05
2024-09-13 14:32:55 C 06 13 38.894 +19 27 01.37 V T05
2024-09-13 14:49:37 C 06 13 39.958 +19 26 42.86 V T05
2024-09-13 14:58:10 C 06 13 40.618 +19 26 35.81 V T05
2024-09-13 15:00:48 C 06 13 40.723 +19 26 31.78 V T05
2024-09-14 14:42:46 C 06 15 21.382 +19 01 08.11 V T08
2024-09-14 14:48:46 C 06 15 21.780 +19 01 01.78 V T08
2024-09-14 15:00:25 C 06 15 22.620 +19 00 49.21 V T08
2024-09-14 15:17:38 C 06 15 23.734 +19 00 30.89 V T08
2024-09-29 14:32:27 C 06 40 12.058 +11 07 20.46 V T05
2024-09-29 14:55:58 C 06 40 13.668 +11 06 40.86 V T05
2024-09-29 15:00:32 C 06 40 13.956 +11 06 33.73 V T05
2024-09-29 15:04:40 C 06 40 14.278 +11 06 26.78 V T05
2024-09-29 15:22:07 C 06 40 15.413 +11 05 58.63 V T05
2024-10-05 11:21:32 C 06 49 36.372 +07 06 39.49 V G96
2024-10-05 11:29:24 C 06 49 36.876 +07 06 24.98 V G96
2024-10-05 11:37:17 C 06 49 37.387 +07 06 10.58 V G96
2024-10-05 11:45:08 C 06 49 37.888 +07 05 56.11 V G96
2024-10-05 12:31:03 C 06 49 40.934 +07 04 30.61 V U52
2024-10-05 12:35:14 C 06 49 41.182 +07 04 22.84 V U52
2024-10-05 12:39:23 C 06 49 41.436 +07 04 15.38 V U52
2024-10-05 13:59:19 C 06 49 46.872 +07 01 49.98 V T05
2024-10-05 14:03:52 C 06 49 47.131 +07 01 41.30 V T05
2024-10-05 14:16:15 C 06 49 47.974 +07 01 18.41 V T05
2024-10-05 14:31:20 C 06 49 48.953 +07 00 50.69 V T05
2024-10-09 13:52:47 C 06 56 05.023 +03 55 31.98 V T05
2024-10-09 14:00:36 C 06 56 05.498 +03 55 16.39 V T05
2024-10-09 14:05:10 C 06 56 05.758 +03 55 06.78 V T05
2024-10-09 14:21:26 C 06 56 06.852 +03 54 34.34 V T05
2024-10-10 01:19:45 C 06 56 49.898 +03 32 06.97 V M22
2024-10-10 01:25:00 C 06 56 50.234 +03 31 56.24 V M22
2024-10-10 01:33:28 C 06 56 50.758 +03 31 39.14 V M22
2024-10-10 01:47:51 C 06 56 51.718 +03 31 09.41 V M22
2024-10-13 13:20:43 C 07 02 17.299 +00 30 26.93 V T05
2024-10-13 13:26:58 C 07 02 17.726 +00 30 12.82 V T05
2024-10-13 13:35:26 C 07 02 18.250 +00 29 53.77 V T05
2024-10-13 13:48:17 C 07 02 19.075 +00 29 24.72 V T05
2024-10-15 12:51:48 C 07 05 21.312 -01 19 24.49 V T08