401998 (2003 MO)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.8759525409 ± 5.68e-08
Semi-major axis (a)1.9693341847 AU ± 3.56e-09
Inclination (i)21.46364369° ± 1.86e-05
Long. of Asc. Node (Ω)240.05400790° ± 2.76e-05
Arg. of Perihelion (ω)164.66706372° ± 2.78e-05
Mean Anomaly (M)24.07274745° ± 7.61e-06
Mean Motion (n)0.3566425420°/day ± 9.68e-10
Perihelion dist (q)0.24429090 AU ± 1.12e-07
Aphelion dist (Q)3.69437747 AU ± 1.12e-07
Orbital Period2.76362511 yr ± 7.50e-09
Physical Parameters
H (abs. magnitude)18.42
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.403″
Uncertainty0
Orbit TypeApollo
MOID0.218148 AU
Observations Used304
Oppositions14
Arc Total2003-2025
First Observation Used2003-06-22
Last Observation Used2025-07-21
Observations (317)
Date Type RA Dec Mag Band Observatory
2003-06-22 06:53:00 C 17 22 05.67 +34 02 43.5 16.9 c 704
2003-06-22 07:07:10 C 17 21 59.46 +34 04 25.2 17.0 c 704
2003-06-22 07:21:19 C 17 21 53.15 +34 06 06.7 18.3 c 704
2003-06-22 07:35:31 C 17 21 46.96 +34 07 50.5 17.1 c 704
2003-06-22 22:01:04 C 17 15 21.29 +35 53 08.6 c 587
2003-06-22 22:03:39 C 17 15 19.94 +35 53 29.8 c 587
2003-06-22 22:05:57 C 17 15 17.90 +35 53 45.5 c 106
2003-06-22 22:05:59 C 17 15 18.26 +35 53 43.4 d A50
2003-06-22 22:06:16 C 17 15 18.71 +35 53 49.5 c 587
2003-06-22 22:09:08 C 17 15 17.25 +35 54 13.0 c 587
2003-06-22 22:12:44 C 17 15 14.97 +35 54 34.2 d A50
2003-06-22 22:15:52 C 17 15 14.04 +35 54 59.9 c 106
2003-06-22 22:16:45 C 17 15 13.03 +35 55 05.3 d A50
2003-06-22 22:17:19 C 17 15 13.28 +35 55 10.7 c 106
2003-06-22 22:18:20 C 17 15 12.34 +35 55 15.7 d A50
2003-06-22 22:19:44 C 17 15 11.63 +35 55 26.0 d A50
2003-06-22 22:21:03 C 17 15 11.76 +35 55 36.8 c 224
2003-06-22 22:21:30 C 17 15 10.81 +35 55 39.4 d A50
2003-06-22 22:23:10 C 17 15 10.77 +35 55 53.0 c 224
2003-06-22 22:23:34 C 17 15 09.88 +35 55 53.9 d A50
2003-06-22 22:25:16 C 17 15 09.79 +35 56 08.7 c 224
2003-06-22 22:25:50 C 17 15 08.71 +35 56 12.0 d A50
2003-06-22 22:26:51 C 17 15 08.81 +35 56 20.9 c 106
2003-06-22 22:27:22 C 17 15 08.77 +35 56 24.2 c 224
2003-06-22 22:28:20 C 17 15 08.04 +35 56 32.1 c 106
2003-06-22 22:29:00 C 17 15 07.36 +35 56 33.7 d A50
2003-06-22 22:29:28 C 17 15 07.81 +35 56 39.8 c 224
2003-06-22 22:29:48 C 17 15 07.40 +35 56 42.8 c 106
2003-06-22 22:31:49 C 17 15 05.92 +35 56 54.9 d A50
2003-06-22 22:37:19 C 17 15 03.34 +35 57 35.5 d A50
2003-06-22 22:39:00 C 17 15 02.58 +35 57 47.8 d A50
2003-06-22 22:39:14 C 17 15 02.95 +35 57 52.3 c 106
2003-06-22 22:39:35 C 17 15 02.68 +35 57 53.0 d 118
2003-06-22 22:40:26 C 17 15 02.27 +35 57 59.4 d 118
2003-06-22 22:40:42 C 17 15 02.24 +35 58 03.1 c 106
2003-06-22 22:41:24 C 17 15 01.83 +35 58 06.5 d 118
2003-06-22 22:41:59 C 17 15 01.15 +35 58 09.6 d A50
2003-06-22 22:42:11 C 17 15 01.61 +35 58 14.0 c 106
2003-06-22 22:44:47 C 17 15 00.20 +35 58 31.6 d 118
2003-06-22 22:45:40 C 17 14 59.36 +35 58 37.4 d A50
2003-06-22 22:46:33 C 17 14 59.38 +35 58 44.7 d 118
2003-06-22 22:47:51 C 17 14 58.74 +35 58 54.2 d 118
2003-06-22 22:51:19 C 17 14 56.68 +35 59 19.0 d A50
2003-06-22 22:58:29 C 17 14 53.38 +36 00 10.3 d A50
2003-06-22 23:03:29 C 17 14 50.86 +36 00 49.0 d A50
2003-06-22 23:18:06 C 17 14 44.90 +36 02 43.7 17.0 c 952
2003-06-22 23:19:12 C 17 14 44.41 +36 02 51.4 c 952
2003-06-22 23:22:42 C 17 14 42.40 +36 03 11.9 d 151
2003-06-22 23:22:53 C 17 14 42.69 +36 03 18.3 c 952
2003-06-22 23:23:11 C 17 14 42.23 +36 03 16.2 d 151