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
2003-06-28 22:09:07 C 15 34 56.31 +53 07 02.3 c 938
2003-06-28 22:20:00 C 15 34 45.45 +53 08 06.9 c 938
2003-06-28 22:25:45 C 15 34 38.72 +53 08 32.2 c 046
2003-06-28 22:27:08 C 15 34 37.40 +53 08 40.3 c 046
2003-06-28 22:27:46 C 15 34 36.71 +53 08 44.5 c 046
2003-06-28 22:29:19 C 15 34 35.17 +53 08 54.3 c 046
2003-06-28 22:30:07 C 15 34 34.45 +53 08 58.9 c 046
2003-06-28 22:30:46 C 15 34 33.72 +53 09 01.9 c 046
2003-06-28 22:31:24 C 15 34 33.06 +53 09 05.4 c 046
2003-06-28 22:32:02 C 15 34 32.46 +53 09 10.2 c 046
2003-06-28 23:23:10 C 15 33 42.40 +53 14 14.1 o J95
2003-06-28 23:27:30 C 15 33 38.05 +53 14 39.8 o J95
2003-06-28 23:31:50 C 15 33 33.73 +53 15 05.3 o J95
2003-06-29 21:58:01 C 15 10 21.02 +55 20 02.9 c 952
2003-06-29 22:04:12 C 15 10 14.43 +55 20 35.5 c 952
2003-06-29 22:05:36 C 15 10 12.86 +55 20 42.6 c 952
2003-06-29 22:07:14 C 15 10 11.13 +55 20 51.6 c 952
2003-06-29 22:10:36 C 15 10 07.42 +55 21 09.3 c 952
2003-06-29 22:12:23 C 15 10 05.42 +55 21 18.3 c 952
2003-06-29 22:13:09 C 15 10 03.93 +55 21 13.5 d 118
2003-06-29 22:17:37 C 15 09 59.11 +55 21 35.6 d 118
2003-06-29 22:41:14 C 15 09 33.57 +55 23 43.7 c 176
2003-06-29 22:44:24 C 15 09 30.06 +55 24 00.0 c 176
2003-06-29 22:45:54 C 15 09 28.43 +55 24 07.5 c 176
2003-06-29 22:47:15 C 15 09 26.96 +55 24 13.9 c 176
2003-06-29 22:51:24 C 15 09 22.35 +55 24 34.7 c 176
2003-06-30 05:19:36 C 15 02 17.11 +55 56 54.8 o 699
2003-06-30 05:45:33 C 15 01 47.92 +55 58 59.4 o 699
2003-06-30 06:11:29 C 15 01 18.65 +56 01 03.7 o 699
2003-06-30 06:37:25 C 15 00 49.41 +56 03 06.1 o 699
2003-06-30 22:38:14 C 14 42 30.82 +57 14 14.2 d 118
2003-06-30 22:40:14 C 14 42 28.43 +57 14 21.9 d 118
2003-06-30 22:43:11 C 14 42 24.95 +57 14 34.5 d 118
2003-06-30 22:44:04 C 14 42 23.87 +57 14 38.3 d 118
2003-07-01 03:18:49 C 14 37 01.92 +57 33 10.3 c 649
2003-07-01 03:20:23 C 14 37 00.07 +57 33 16.6 c 649
2003-07-01 03:21:55 C 14 36 58.20 +57 33 22.4 c 649
2003-07-01 03:23:29 C 14 36 56.35 +57 33 28.6 c 649
2003-07-02 20:57:52 C 13 45 51.01 +59 33 51.8 d 118
2003-07-02 21:02:25 C 13 45 45.11 +59 33 59.9 d 118
2003-07-02 21:07:32 C 13 45 38.72 +59 34 09.3 d 118
2003-07-02 21:13:16 C 13 45 31.32 +59 34 20.1 d 118
2003-07-04 05:11:17 C 13 05 40.92 +60 10 45.0 c 649
2003-07-04 05:13:37 C 13 05 38.00 +60 10 45.9 c 649
2003-07-04 05:15:58 C 13 05 35.21 +60 10 46.5 c 649
2003-07-06 20:55:39 C 11 53 35.78 +59 21 29.8 d 118
2003-07-06 21:11:10 C 11 53 19.90 +59 21 01.1 d 118
2003-07-06 21:17:08 C 11 53 13.95 +59 20 49.9 d 118
2011-09-06 05:33:48 C 14 55 50.050 -09 54 25.97 o 568
2011-09-06 05:36:37 C 14 55 50.141 -09 54 26.21 o 568