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
2025-06-22 06:03:56 C 16 00 01.174 -04 11 04.49 V G96
2025-06-22 06:12:10 C 15 59 59.910 -04 10 56.71 V G96
2025-06-22 06:20:23 C 15 59 58.610 -04 10 48.65 V G96
2025-06-22 06:28:35 C 15 59 57.293 -04 10 40.26 V G96
2025-06-23 11:41:40 C 15 55 25.051 -03 41 54.92 V P07
2025-06-23 12:22:10 C 15 55 18.670 -03 41 15.58 V P07
2025-06-23 14:12:09 C 15 55 01.133 -03 39 27.43 V P07
2025-06-23 15:49:35 C 15 54 45.619 -03 37 52.25 V P07
2025-06-26 08:35:10 C 15 44 39.073 -02 34 53.22 X F51
2025-06-26 08:50:46 C 15 44 36.588 -02 34 38.07 X F51
2025-06-26 09:06:23 C 15 44 34.079 -02 34 22.79 X F51
2025-07-02 12:18:17 C 15 21 52.95 -00 14 53.1 V D29
2025-07-02 12:38:39 C 15 21 49.79 -00 14 34.6 V D29
2025-07-20 15:23:56 C 14 23 15.892 +05 26 54.78 W O18
2025-07-20 15:41:12 C 14 23 13.849 +05 27 05.85 W O18
2025-07-21 15:15:57 C 14 20 30.925 +05 42 10.12 W O18
2025-07-21 15:34:52 C 14 20 28.705 +05 42 22.15 W O18