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
2025-05-20 14:13:34 C 19 05 39.218 +43 03 31.03 V T05
2025-05-20 14:27:45 C 19 05 37.642 +43 04 06.24 V T05
2025-05-20 14:36:20 C 19 05 36.691 +43 04 27.59 V T05
2025-05-22 10:57:14 C 19 00 44.921 +44 51 29.12 V T08
2025-05-22 11:07:18 C 19 00 43.726 +44 51 52.85 V T08
2025-05-22 11:11:25 C 19 00 43.255 +44 52 02.42 V T08
2025-05-22 12:02:06 C 19 00 37.322 +44 54 01.55 V T08
2025-05-22 23:03:44 C 18 59 22.058 +45 19 24.85 Z C23
2025-05-22 23:22:57 C 18 59 19.855 +45 20 09.28 Z C23
2025-05-23 00:00:06 C 18 59 15.466 +45 21 34.52 Z C23
2025-05-24 01:38:33 B 18 56 15.732 +46 19 11.17 Z K35
2025-05-24 01:40:36 B 18 56 15.434 +46 19 15.74 Z K35
2025-05-24 01:42:10 B 18 56 15.228 +46 19 19.38 Z K35
2025-05-24 13:28:00 C 18 54 50.938 +46 45 04.03 V T05
2025-05-24 13:32:38 C 18 54 50.376 +46 45 13.90 V T05
2025-05-24 13:43:09 C 18 54 49.022 +46 45 36.94 V T05
2025-05-24 13:59:48 C 18 54 46.978 +46 46 12.18 V T05
2025-05-25 20:10:41 C 18 51 06.816 +47 49 36.19 X M26
2025-05-25 20:14:02 C 18 51 06.408 +47 49 43.18 X M26
2025-05-25 20:17:40 C 18 51 05.978 +47 49 50.88 X M26
2025-05-26 10:24:37 C 18 49 19.236 +48 18 35.42 V G96
2025-05-26 10:27:06 C 18 49 19.634 +48 18 41.22 V T08
2025-05-26 10:30:54 C 18 49 18.430 +48 18 48.00 V G96
2025-05-26 10:37:08 C 18 49 17.616 +48 19 00.41 V G96
2025-05-26 10:43:22 C 18 49 16.756 +48 19 12.50 V G96
2025-05-26 11:03:35 C 18 49 14.923 +48 19 54.84 V T08
2025-05-26 11:18:57 C 18 49 12.919 +48 20 25.94 V T08
2025-05-28 10:03:30 C 18 43 11.633 +49 50 08.84 V T05
2025-05-28 10:06:56 C 18 43 11.148 +49 50 15.11 V T05
2025-05-28 10:10:54 C 18 43 10.642 +49 50 22.45 V T05
2025-05-28 11:01:34 C 18 43 03.749 +49 51 56.59 V T05
2025-05-28 11:26:11 C 18 43 00.420 +49 52 41.95 V T05
2025-05-28 11:30:21 C 18 42 59.844 +49 52 49.80 V T05
2025-05-28 11:37:38 C 18 42 58.841 +49 53 03.23 V T05
2025-05-28 12:09:38 C 18 42 54.514 +49 54 02.05 V T05
2025-05-29 01:31:26 C 18 41 08.364 +50 18 11.27 V R17
2025-05-29 01:51:48 C 18 41 05.575 +50 18 47.77 V R17
2025-05-29 02:12:12 C 18 41 02.779 +50 19 24.42 V R17
2025-05-29 02:32:33 C 18 40 59.969 +50 20 00.85 V R17
2025-05-30 11:05:10 C 18 36 35.743 +51 16 16.97 V T08
2025-05-30 11:07:48 C 18 36 35.390 +51 16 21.29 V T08
2025-05-30 11:36:55 C 18 36 31.274 +51 17 10.32 V T08
2025-05-30 11:43:34 C 18 36 30.317 +51 17 21.48 V T08
2025-05-30 21:09:32 C 18 35 12.838 +51 32 49.92 Z C23
2025-05-30 22:13:47 C 18 35 03.934 +51 34 37.02 Z C23
2025-06-01 11:08:02 C 18 29 53.630 +52 32 52.40 V T05
2025-06-01 11:10:39 C 18 29 53.261 +52 32 56.62 V T05
2025-06-01 11:15:52 C 18 29 52.488 +52 33 04.39 V T05
2025-06-01 11:23:49 C 18 29 51.336 +52 33 16.49 V T05
2025-06-01 12:48:32 C 18 29 38.922 +52 35 24.63 X F51