IAA RAS IAA Minor Planet Database

2021 AB

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6491595000
Semi-major axis (a)2.5127228000 AU
Inclination (i)1.42596000°
Long. of Asc. Node (Ω)293.09342000°
Arg. of Perihelion (ω)213.44249000°
Mean Anomaly (M)72.21921000°
Mean Motion (n)0.2474498500°/day
Perihelion dist (q)0.88156490 AU
Aphelion dist (Q)4.14388070 AU
Orbital Period3.98306020 yr
Physical Parameters
H (abs. magnitude)25.19
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date—
RMS Residual0.750″
Uncertainty7
Orbit TypeApollo
MOID0.003901 AU
Observations Used54
Oppositions1
Arc Total—
First Observation Used—
Last Observation Used2021-01-03
Observations (55)
Date Type RA Dec Mag Band Observatory
2021-01-01 04:12:33 C 03 54 51.27 +35 22 48.5 – o I41
2021-01-01 04:13:14 C 03 54 50.71 +35 22 52.8 – o I41
2021-01-01 05:13:43 C 03 53 55.17 +35 29 38.0 – o I41
2021-01-02 05:37:01 C 03 23 10.77 +39 15 50.5 – V 703
2021-01-02 05:44:36 C 03 22 54.76 +39 17 21.2 – V 703
2021-01-02 05:59:46 C 03 22 22.79 +39 20 23.7 – V 703
2021-01-02 06:38:57 C 03 20 58.78 +39 28 16.5 – V I52
2021-01-02 06:39:30 C 03 20 57.60 +39 28 23.1 – V I52
2021-01-02 06:40:02 C 03 20 56.44 +39 28 29.7 – V I52
2021-01-02 06:40:35 C 03 20 55.27 +39 28 36.1 – V I52
2021-01-02 07:46:12 C 03 18 31.12 +39 41 49.0 – V I52
2021-01-02 07:46:45 C 03 18 29.91 +39 41 55.7 – V I52
2021-01-02 07:47:18 C 03 18 28.71 +39 42 02.4 – V I52
2021-01-02 07:47:50 C 03 18 27.50 +39 42 09.0 – V I52
2021-01-02 08:43:46 C 03 16 21.56 +39 53 30.2 – V I52
2021-01-02 08:44:34 C 03 16 19.67 +39 53 40.3 – V I52
2021-01-02 08:45:23 C 03 16 17.85 +39 53 50.1 – V I52
2021-01-02 08:46:12 C 03 16 15.96 +39 54 00.1 – V I52
2021-01-02 12:34:01 C 03 07 33.76 +40 52 29.9 – q 900
2021-01-02 12:37:43 C 03 07 23.11 +40 53 25.4 – q 900
2021-01-02 12:41:26 C 03 07 12.55 +40 54 19.7 – q 900
2021-01-02 16:30:19 C 02 56 40.22 +41 52 57.1 – q L18
2021-01-02 16:32:19 C 02 56 33.36 +41 53 31.6 – q L18
2021-01-02 16:32:59 C 02 56 31.06 +41 53 44.3 – q L18
2021-01-02 16:33:39 C 02 56 28.65 +41 53 54.8 – q L18
2021-01-02 16:42:29 C 02 56 01.62 +41 56 47.5 – V L04
2021-01-02 16:56:23 C 02 55 13.51 +42 00 53.6 – V L04
2021-01-02 17:00:56 C 02 54 57.62 +42 02 13.9 – V L04
2021-01-02 20:10:22 C 02 43 12.20 +42 59 23.8 – V 958
2021-01-02 20:14:44 C 02 42 53.93 +43 00 43.3 – V 958
2021-01-02 20:19:08 C 02 42 35.31 +43 02 03.0 – V 958
2021-01-02 20:23:34 C 02 42 16.47 +43 03 24.6 – V 958
2021-01-03 00:11:19 C 02 25 52.50 +44 15 58.6 – q H36
2021-01-03 00:13:22 C 02 25 41.77 +44 16 40.2 – q H36
2021-01-03 00:14:35 C 02 25 35.39 +44 17 04.8 – q H36
2021-01-03 00:15:47 C 02 25 29.01 +44 17 29.4 – q H36
2021-01-03 00:17:00 C 02 25 22.58 +44 17 54.5 – q H36
2021-01-03 01:32:33 C 02 18 45.29 +44 44 23.0 – V I52
2021-01-03 01:33:15 C 02 18 41.28 +44 44 37.2 – V I52
2021-01-03 01:33:57 C 02 18 37.28 +44 44 51.8 – V I52
2021-01-03 01:34:39 C 02 18 33.29 +44 45 05.9 – V I52
2021-01-03 04:02:28 C 02 03 12.08 +45 33 03.4 – V I52
2021-01-03 04:03:10 C 02 03 07.36 +45 33 16.3 – V I52
2021-01-03 04:03:52 C 02 03 02.68 +45 33 28.8 – V I52
2021-01-03 04:04:33 C 02 02 58.05 +45 33 41.3 – V I52
2021-01-03 16:44:01 C 00 01 24.41 +47 19 47.2 – V L01
2021-01-03 16:46:39 C 00 00 48.22 +47 19 05.6 – V L01
2021-01-03 16:47:58 C 00 00 30.10 +47 18 44.4 – V L01
2021-01-03 16:49:21 C 00 00 11.05 +47 18 22.2 – V L01
2021-01-03 16:50:40 C 23 59 52.81 +47 18 00.7 – V L01