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
2011-09-06 05:39:25 C 14 55 50.235 -09 54 26.46 o 568
2011-09-06 06:01:33 C 14 55 51.000 -09 54 28.23 o 568
2011-09-06 06:04:22 C 14 55 51.096 -09 54 28.48 o 568
2011-09-06 06:07:13 C 14 55 51.198 -09 54 28.71 o 568
2011-09-21 05:19:51 C 15 11 10.099 -10 31 35.74 o 568
2011-09-21 05:23:13 C 15 11 10.264 -10 31 36.21 o 568
2011-09-21 05:28:58 C 15 11 10.554 -10 31 36.79 o 568
2012-02-28 14:39:16 C 14 25 42.553 -38 53 36.73 t 568
2014-06-07 01:31:58 C 17 34 51.74 -04 18 24.0 q 204
2014-06-07 01:41:55 C 17 34 50.47 -04 18 09.8 q 204
2014-06-08 00:12:51 C 17 31 41.73 -03 45 20.0 q 203
2014-06-08 00:33:21 C 17 31 38.74 -03 44 50.3 q 203
2014-06-08 05:41:32 C 17 30 54.80 -03 37 10.2 q H36
2014-06-08 06:11:30 C 17 30 50.38 -03 36 25.1 q H36
2014-06-08 06:18:41 C 17 30 49.30 -03 36 14.4 q H36
2014-06-15 05:42:22 C 17 02 28.24 +01 05 53.8 u H21
2014-06-15 05:45:35 C 17 02 27.60 +01 05 59.9 u H21
2014-06-15 05:48:24 C 17 02 27.05 +01 06 05.2 u H21
2014-06-15 05:51:29 C 17 02 26.41 +01 06 10.5 u H21
2014-06-15 05:54:35 C 17 02 25.77 +01 06 16.6 u H21
2014-06-20 05:17:03 C 16 36 43.41 +05 05 56.2 q H45
2014-06-20 05:19:32 C 16 36 42.83 +05 06 01.8 q H45
2014-06-20 05:20:58 C 16 36 42.45 +05 06 05.0 q H45
2014-06-20 05:22:59 C 16 36 41.96 +05 06 09.3 q H45
2014-06-20 05:24:55 C 16 36 41.49 +05 06 13.1 q H45
2014-06-20 05:27:03 C 16 36 41.03 +05 06 18.1 q H45
2014-06-20 05:29:44 C 16 36 40.35 +05 06 23.7 q H45
2014-06-20 05:30:53 C 16 36 40.10 +05 06 26.6 q H45
2014-06-21 05:06:19 C 16 31 01.67 +05 57 04.9 R G45
2014-06-21 05:22:46 C 16 30 57.58 +05 57 40.7 R G45
2014-06-21 05:44:51 C 16 30 52.09 +05 58 28.6 R G45
2014-06-21 05:48:39 C 16 30 50.93 +05 58 36.4 q H45
2014-06-21 05:49:52 C 16 30 50.63 +05 58 39.5 q H45
2014-06-21 05:51:17 C 16 30 50.25 +05 58 42.6 q H45
2014-06-21 05:53:04 C 16 30 49.81 +05 58 46.1 q H45
2014-06-21 05:54:59 C 16 30 49.34 +05 58 49.9 q H45
2014-06-21 05:56:37 C 16 30 48.94 +05 58 53.7 q H45
2014-06-21 06:11:05 C 16 30 45.62 +05 59 25.7 R G45
2014-06-24 08:13:42 C 16 11 49.37 +08 43 39.8 q 703
2014-06-24 08:26:35 C 16 11 45.92 +08 44 08.0 q 703
2014-06-24 08:39:32 C 16 11 42.39 +08 44 37.3 q 703
2014-06-24 08:52:26 C 16 11 38.93 +08 45 06.4 q 703
2014-06-27 04:02:31 C 15 53 01.79 +11 18 09.3 R G45
2014-06-27 04:02:37 C 15 53 01.79 +11 18 09.6 R G45
2014-06-27 04:21:03 C 15 52 56.40 +11 18 51.8 R G45
2014-06-27 04:37:24 C 15 52 51.61 +11 19 29.1 R G45
2014-06-27 04:53:49 C 15 52 46.80 +11 20 06.8 R G45
2014-07-01 04:32:46 C 15 24 11.14 +14 56 46.6 q H45
2014-07-01 04:34:28 C 15 24 10.61 +14 56 50.6 q H45
2014-07-01 04:35:52 C 15 24 10.21 +14 56 53.0 q H45