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
2003-06-23 08:43:43 C 17 10 12.65 +37 12 36.6 17.4 c 704
2003-06-23 08:43:59 C 17 10 12.49 +37 12 38.0 17.5 c 704
2003-06-23 23:31:49 C 17 02 40.27 +39 03 15.7 o J95
2003-06-23 23:37:15 C 17 02 37.32 +39 03 56.6 o J95
2003-06-23 23:43:12 C 17 02 34.10 +39 04 41.2 o J95
2003-06-24 06:03:00 C 16 59 08.18 +39 52 25.3 c 785
2003-06-24 06:30:21 C 16 58 52.17 +39 55 50.8 c 785
2003-06-24 07:07:12 C 16 58 32.07 +40 00 22.3 c 785
2003-06-24 07:15:10 C 16 58 27.18 +40 01 25.2 c 785
2003-06-24 22:19:13 C 16 49 47.43 +41 55 02.6 c 046
2003-06-24 22:20:13 C 16 49 46.81 +41 55 10.4 c 046
2003-06-24 22:20:51 C 16 49 46.42 +41 55 14.6 c 046
2003-06-24 22:21:50 C 16 49 45.84 +41 55 22.1 c 046
2003-06-24 22:22:41 C 16 49 45.29 +41 55 28.1 c 046
2003-06-24 22:23:19 C 16 49 44.92 +41 55 32.2 c 046
2003-06-24 22:23:57 C 16 49 44.55 +41 55 37.0 c 046
2003-06-25 05:40:24 C 16 45 18.04 +42 50 32.5 c 670
2003-06-25 07:42:05 C 16 44 00.21 +43 05 45.4 c 670
2003-06-25 22:55:48 C 16 33 59.47 +44 59 25.1 c 938
2003-06-25 22:57:28 C 16 33 58.35 +44 59 37.6 c 938
2003-06-25 23:04:37 C 16 33 53.34 +45 00 30.5 c 938
2003-06-25 23:06:18 C 16 33 52.16 +45 00 43.4 c 938
2003-06-25 23:20:21 C 16 33 42.36 +45 02 26.9 c 938
2003-06-25 23:22:01 C 16 33 41.18 +45 02 39.3 c 938
2003-06-25 23:34:43 C 16 33 32.29 +45 04 14.9 c 938
2003-06-25 23:36:24 C 16 33 30.98 +45 04 26.2 c 938
2003-06-26 04:42:49 C 16 29 58.36 +45 42 14.0 c 448
2003-06-26 04:45:58 C 16 29 56.04 +45 42 37.5 c 448
2003-06-26 04:49:28 C 16 29 53.53 +45 43 03.3 c 448
2003-06-26 07:02:00 C 16 28 16.29 +45 59 05.5 c 785
2003-06-26 07:11:51 C 16 28 09.04 +46 00 16.7 c 785
2003-06-26 07:20:13 C 16 28 02.91 +46 01 13.2 c 785
2003-06-27 04:09:45 C 16 12 18.44 +48 31 18.8 c 649
2003-06-27 04:15:32 C 16 12 13.76 +48 31 58.9 c 649
2003-06-27 04:17:50 C 16 12 11.85 +48 32 15.5 c 649
2003-06-27 21:36:58 C 15 57 41.40 +50 31 02.5 c 046
2003-06-27 21:38:08 C 15 57 40.36 +50 31 09.5 c 046
2003-06-27 21:38:46 C 15 57 39.76 +50 31 12.6 c 046
2003-06-27 21:39:23 C 15 57 39.22 +50 31 17.4 c 046
2003-06-27 21:40:03 C 15 57 38.57 +50 31 22.9 c 046
2003-06-27 21:40:41 C 15 57 38.06 +50 31 26.9 c 046
2003-06-27 21:42:39 C 15 57 36.31 +50 31 39.1 c 046
2003-06-27 22:00:22 C 15 57 21.31 +50 33 35.9 o J95
2003-06-27 22:07:05 C 15 57 15.42 +50 34 20.6 o J95
2003-06-27 22:16:00 C 15 57 07.49 +50 35 20.5 o J95
2003-06-27 22:36:22 C 15 56 49.62 +50 37 43.2 c 938
2003-06-27 23:18:23 C 15 56 11.27 +50 42 11.7 d 118
2003-06-27 23:25:39 C 15 56 04.74 +50 43 00.0 d 118
2003-06-27 23:27:04 C 15 56 03.45 +50 43 09.2 d 118
2003-06-28 21:57:06 C 15 35 08.28 +53 05 49.9 c 938