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
2014-07-01 04:37:32 C 15 24 09.69 +14 56 57.0 q H45
2014-07-01 04:39:21 C 15 24 09.08 +14 57 01.1 q H45
2014-07-01 04:41:07 C 15 24 08.57 +14 57 04.9 q H45
2014-07-04 05:03:04 C 15 01 19.29 +17 33 27.8 q H45
2014-07-04 05:04:50 C 15 01 18.78 +17 33 31.3 q H45
2014-07-04 05:06:12 C 15 01 18.33 +17 33 34.0 q H45
2014-07-04 05:07:52 C 15 01 17.81 +17 33 37.5 q H45
2014-07-04 05:09:04 C 15 01 17.39 +17 33 40.4 q H45
2014-07-04 05:10:27 C 15 01 16.97 +17 33 42.6 q H45
2014-07-05 21:05:28 C 14 48 25.10 +18 55 10.8 c A53
2014-07-05 21:10:35 C 14 48 23.34 +18 55 21.0 c A53
2014-07-05 21:18:41 C 14 48 20.69 +18 55 36.3 c A53
2014-07-05 21:29:29 C 14 48 17.13 +18 55 58.9 c A53
2014-07-07 01:41:00 C 14 39 07.22 +19 51 00.3 q I15
2014-07-07 01:46:35 C 14 39 05.40 +19 51 11.1 q I15
2014-07-07 01:52:08 C 14 39 03.55 +19 51 21.4 q I15
2014-07-10 02:42:41 C 14 15 14.41 +22 02 29.0 u H21
2014-07-10 02:47:59 C 14 15 12.62 +22 02 37.8 u H21
2014-07-10 02:53:02 C 14 15 11.03 +22 02 46.2 u H21
2014-07-10 02:57:36 C 14 15 09.48 +22 02 53.9 u H21
2014-07-11 03:09:33 C 14 07 14.70 +22 42 39.1 q H21
2014-07-11 03:12:11 S 14 07 14.916 +22 42 50.62 L C51
2014-07-11 03:14:42 C 14 07 13.02 +22 42 47.0 q H21
2014-07-11 03:19:47 C 14 07 11.32 +22 42 55.3 q H21
2014-07-11 04:46:48 S 14 06 44.038 +22 45 22.14 L C51
2014-07-11 06:21:36 S 14 06 13.078 +22 47 53.02 L C51
2014-07-11 07:56:24 S 14 05 42.137 +22 50 23.17 L C51
2014-07-15 22:14:25 C 13 30 02.24 +25 24 28.4 t 204
2014-07-15 22:29:31 C 13 29 57.42 +25 24 46.2 t 204
2014-07-15 22:44:19 C 13 29 52.65 +25 25 04.0 t 204
2023-01-29 08:17:57 C 15 14 54.48 -41 03 48.7 u 807
2023-01-29 08:24:05 C 15 14 54.25 -41 03 50.8 u 807
2023-01-29 08:30:13 C 15 14 53.99 -41 03 52.1 u 807
2023-01-31 08:05:15 C 15 13 04.60 -41 19 22.0 u 807
2023-01-31 08:13:25 C 15 13 04.22 -41 19 24.8 u 807
2023-01-31 08:21:36 C 15 13 03.90 -41 19 26.7 u 807
2023-02-17 07:03:47 C 14 49 09.11 -43 02 25.8 u 807
2023-02-17 07:25:56 C 14 49 07.18 -43 02 29.6 u 807
2023-02-17 07:31:28 C 14 49 06.77 -43 02 30.8 u 807
2023-04-17 08:19:41 C 12 10 57.893 -29 12 48.14 U F52
2023-04-17 08:36:15 C 12 10 56.721 -29 12 31.22 U F52
2023-04-17 08:52:46 C 12 10 55.530 -29 12 13.59 U F52
2023-04-17 09:09:24 C 12 10 54.335 -29 11 56.34 U F52
2025-06-17 15:13:53 C 16 17 00.60 -05 58 37.6 V D29
2025-06-17 15:34:15 C 16 16 57.48 -05 58 17.9 V D29
2025-06-17 15:54:36 C 16 16 54.32 -05 57 56.8 V D29
2025-06-21 06:53:40 C 16 03 36.648 -04 33 43.13 V G96
2025-06-21 06:59:56 C 16 03 35.626 -04 33 36.94 V G96
2025-06-21 07:06:11 C 16 03 34.628 -04 33 30.42 V G96
2025-06-21 07:12:27 C 16 03 33.664 -04 33 24.66 V G96