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 23:23:57 C 17 14 41.87 +36 03 22.1 d 151
2003-06-22 23:24:12 C 17 14 42.06 +36 03 27.7 c 952
2003-06-22 23:24:48 C 17 14 41.50 +36 03 28.2 d 151
2003-06-22 23:25:43 C 17 14 41.36 +36 03 39.4 c 952
2003-06-22 23:29:04 C 17 14 39.37 +36 03 59.7 d 151
2003-06-22 23:29:31 C 17 14 39.22 +36 04 03.2 d 151
2003-06-22 23:29:59 C 17 14 39.33 +36 04 10.6 c 952
2003-06-22 23:30:38 C 17 14 38.59 +36 04 11.5 d 151
2003-06-22 23:31:19 C 17 14 38.68 +36 04 20.7 16.9 c 952
2003-06-22 23:32:42 C 17 14 38.00 +36 04 30.6 c 952
2003-06-22 23:32:47 C 17 14 38.00 +36 04 31.4 c 952
2003-06-22 23:33:06 C 17 14 37.39 +36 04 28.2 d 151
2003-06-22 23:34:03 C 17 14 37.38 +36 04 40.5 c 952
2003-06-22 23:35:23 C 17 14 36.71 +36 04 50.2 c 952
2003-06-22 23:36:42 C 17 14 36.10 +36 04 59.8 c 952
2003-06-22 23:38:02 C 17 14 35.48 +36 05 09.8 16.6 c 952
2003-06-22 23:38:32 C 17 14 35.24 +36 05 13.3 c 952
2003-06-22 23:39:04 C 17 14 34.96 +36 05 17.2 c 952
2003-06-22 23:39:37 C 17 14 34.74 +36 05 21.0 c 952
2003-06-23 01:30:12 C 17 13 41.56 +36 18 55.7 o 620
2003-06-23 01:34:14 C 17 13 39.64 +36 19 25.1 o 620
2003-06-23 01:38:09 C 17 13 37.75 +36 19 53.8 o 620
2003-06-23 03:45:59 C 17 12 39.55 +36 35 49.0 c 735
2003-06-23 03:47:00 C 17 12 39.02 +36 35 56.4 c 735
2003-06-23 03:58:29 C 17 12 33.44 +36 37 22.0 c 735
2003-06-23 04:00:00 C 17 12 32.72 +36 37 32.7 c 735
2003-06-23 04:00:59 C 17 12 32.22 +36 37 40.6 c 735
2003-06-23 04:06:57 C 17 12 29.80 +36 38 20.8 m 333
2003-06-23 04:07:24 C 17 12 29.60 +36 38 24.3 m 333
2003-06-23 04:07:30 C 17 12 29.00 +36 38 28.6 c 735
2003-06-23 04:07:53 C 17 12 29.35 +36 38 28.1 m 333
2003-06-23 04:08:20 C 17 12 29.15 +36 38 31.2 m 333
2003-06-23 04:08:47 C 17 12 28.95 +36 38 34.7 m 333
2003-06-23 04:09:16 C 17 12 28.70 +36 38 38.4 m 333
2003-06-23 04:09:44 C 17 12 28.49 +36 38 42.3 m 333
2003-06-23 04:10:11 C 17 12 28.26 +36 38 45.4 m 333
2003-06-23 05:48:35 C 17 11 39.72 +36 50 58.9 c 448
2003-06-23 05:55:20 C 17 11 36.40 +36 51 49.2 c 448
2003-06-23 06:02:01 C 17 11 33.10 +36 52 38.5 c 448
2003-06-23 06:16:09 C 17 11 26.26 +36 54 23.9 c 651
2003-06-23 06:17:31 C 17 11 25.59 +36 54 33.9 c 651
2003-06-23 06:18:38 C 17 11 25.03 +36 54 42.2 c 651
2003-06-23 07:45:28 C 17 10 41.70 +37 05 24.9 17.3 c 704
2003-06-23 07:45:45 C 17 10 41.57 +37 05 26.5 17.0 c 704
2003-06-23 07:59:57 C 17 10 34.50 +37 07 12.1 17.5 c 704
2003-06-23 08:00:12 C 17 10 34.37 +37 07 14.0 17.4 c 704
2003-06-23 08:14:21 C 17 10 27.34 +37 08 58.8 17.4 c 704
2003-06-23 08:14:36 C 17 10 27.17 +37 09 00.5 17.4 c 704
2003-06-23 08:28:51 C 17 10 20.14 +37 10 45.1 18.2 c 704
2003-06-23 08:29:06 C 17 10 19.91 +37 10 48.2 18.5 c 704