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
2025-06-01 13:07:38 C 18 29 36.135 +52 35 53.34 X F51
2025-06-01 13:26:39 C 18 29 33.356 +52 36 21.90 X F51
2025-06-01 13:45:40 C 18 29 30.574 +52 36 50.36 X F51
2025-06-01 20:32:22 B 18 28 33.869 +52 46 52.07 V 160
2025-06-01 20:40:05 B 18 28 32.746 +52 47 03.55 V 160
2025-06-02 21:17:15 C 18 25 00.602 +53 22 37.85 Z C23
2025-06-02 22:13:22 C 18 24 52.282 +53 23 57.41 Z C23
2025-06-02 23:11:30 C 18 24 43.783 +53 25 19.31 Z C23
2025-06-03 11:05:33 C 18 23 00.091 +53 41 50.75 V T08
2025-06-03 11:10:10 C 18 22 59.424 +53 41 57.01 V T08
2025-06-03 11:22:10 C 18 22 57.617 +53 42 13.64 V T08
2025-06-03 11:32:07 C 18 22 56.117 +53 42 27.32 V T08
2025-06-04 01:34:23 C 18 20 53.273 +54 01 12.90 V R17
2025-06-04 01:54:21 C 18 20 50.258 +54 01 38.68 V R17
2025-06-04 02:16:33 C 18 20 46.925 +54 02 08.92 V R17
2025-06-04 02:36:58 C 18 20 43.858 +54 02 35.45 V R17
2025-06-04 20:11:09 B 18 18 09.139 +54 25 11.03 W M73
2025-06-04 20:21:48 B 18 18 07.529 +54 25 24.96 W M73
2025-06-04 20:31:43 B 18 18 06.043 +54 25 37.38 W M73
2025-06-05 10:46:08 C 18 15 59.450 +54 43 14.15 X F51
2025-06-05 10:48:01 C 18 15 59.162 +54 43 16.38 X F51
2025-06-05 10:55:32 C 18 15 58.014 +54 43 25.59 X F51
2025-06-05 10:57:24 C 18 15 57.729 +54 43 27.86 X F51
2025-06-05 11:04:17 C 18 15 56.676 +54 43 36.27 X F52
2025-06-05 11:04:54 C 18 15 56.582 +54 43 37.03 X F51
2025-06-05 11:06:46 C 18 15 56.297 +54 43 39.30 X F51
2025-06-05 11:11:16 C 18 15 55.622 +54 43 44.76 V T05
2025-06-05 11:14:32 C 18 15 55.111 +54 43 48.86 V T05
2025-06-05 11:15:21 C 18 15 54.987 +54 43 49.72 X F52
2025-06-05 11:16:09 C 18 15 54.860 +54 43 50.75 X F51
2025-06-05 11:18:29 C 18 15 54.506 +54 43 53.54 V T05
2025-06-05 11:26:28 C 18 15 53.280 +54 44 03.32 X F52
2025-06-05 11:37:31 C 18 15 51.598 +54 44 16.65 X F52
2025-06-05 11:43:31 C 18 15 50.688 +54 44 23.78 V T05
2025-06-06 18:12:05 B 18 11 18.593 +55 19 53.11 W M73
2025-06-06 18:27:35 B 18 11 16.255 +55 20 10.39 W M73
2025-06-06 18:42:48 B 18 11 13.860 +55 20 28.21 W M73
2025-06-06 18:58:47 B 18 11 11.446 +55 20 46.18 W M73
2025-06-07 01:25:27 C 18 10 12.972 +55 27 55.80 V R17
2025-06-07 01:45:50 C 18 10 09.842 +55 28 18.37 V R17
2025-06-07 02:09:47 C 18 10 06.180 +55 28 44.87 V R17
2025-06-07 02:29:22 C 18 10 03.137 +55 29 06.14 V R17
2025-06-07 10:10:00 C 18 08 54.306 +55 37 26.52 X F52
2025-06-07 10:13:43 C 18 08 53.733 +55 37 30.55 X F51
2025-06-07 10:20:09 C 18 08 52.734 +55 37 37.52 X F52
2025-06-07 10:21:09 C 18 08 52.584 +55 37 39.00 V T08
2025-06-07 10:23:47 C 18 08 52.186 +55 37 41.59 V T08
2025-06-07 10:25:05 C 18 08 51.978 +55 37 42.78 X F51
2025-06-07 10:28:34 C 18 08 51.425 +55 37 47.06 V T08
2025-06-07 10:30:22 C 18 08 51.153 +55 37 48.60 X F52