IAA RAS IAA Minor Planet Database

2021 SR2

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3953904859 ± 1.04e-04
Semi-major axis (a)1.4995729236 AU ± 2.29e-04
Inclination (i)10.95042302° ± 2.12e-03
Long. of Asc. Node (Ω)4.26946533° ± 6.77e-05
Arg. of Perihelion (ω)311.61897870° ± 4.00e-04
Mean Anomaly (M)114.00765116° ± 1.93e-01
Mean Motion (n)0.5367362047°/day ± 1.23e-04
Perihelion dist (q)0.90665606 AU ± 2.09e-04
Aphelion dist (Q)2.09248979 AU ± 3.56e-04
Orbital Period1.83633277 yr ± 4.21e-04
Physical Parameters
H (abs. magnitude)25.98
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.293″
Uncertainty3
Orbit TypeApollo
MOID0.001192 AU
Observations Used74
Oppositions1
Arc Total2021-2021
First Observation Used2021-09-30
Last Observation Used2021-10-03
Observations (74)
Date Type RA Dec Mag Band Observatory
2021-09-30 09:30:00 C 22 46 16.80 +33 33 33.8 – V T05
2021-09-30 09:34:37 C 22 46 22.85 +33 34 20.1 – V T05
2021-09-30 09:53:54 C 22 46 48.12 +33 37 31.8 – V T05
2021-09-30 10:03:10 C 22 47 00.21 +33 39 02.7 – V T05
2021-09-30 18:30:54 C 22 58 44.93 +34 48 36.0 – Z K19
2021-09-30 18:37:11 C 22 58 51.72 +34 49 27.4 – Z K19
2021-09-30 18:43:29 C 22 58 58.53 +34 50 18.5 – Z K19
2021-09-30 18:56:46 C 22 59 12.80 +34 52 06.2 – Z K19
2021-09-30 19:06:38 C 22 59 23.26 +34 53 24.7 – Z K19
2021-09-30 19:12:54 C 22 59 25.01 +34 53 54.9 – V 246
2021-09-30 19:14:18 C 22 59 26.58 +34 54 06.3 – V 246
2021-09-30 19:15:42 C 22 59 34.74 +34 54 18.3 – V I93
2021-09-30 19:21:20 C 22 59 40.71 +34 55 03.2 – V I93
2021-09-30 19:27:08 C 22 59 46.82 +34 55 49.2 – V I93
2021-09-30 19:40:59 C 22 59 57.46 +34 57 54.2 – V G15
2021-09-30 19:49:34 C 23 00 06.29 +34 59 00.2 – V G15
2021-09-30 19:54:04 C 23 00 14.69 +34 59 46.7 – V B49
2021-09-30 19:56:22 C 23 00 17.08 +35 00 04.6 – V B49
2021-09-30 19:57:01 C 23 00 17.74 +35 00 09.1 – V B49
2021-09-30 20:03:51 C 23 00 24.65 +35 01 01.7 – V B49
2021-09-30 20:07:35 C 23 00 31.10 +35 01 26.9 – X Z41
2021-09-30 20:12:33 C 23 00 36.11 +35 02 04.6 – X Z41
2021-09-30 20:15:20 C 23 00 31.68 +35 01 35.0 – V A17
2021-09-30 20:17:32 C 23 00 41.17 +35 02 42.7 – X Z41
2021-09-30 20:27:14 C 23 00 43.67 +35 03 02.5 – V A17
2021-09-30 20:28:52 C 23 00 45.87 +35 03 46.7 – V 203
2021-09-30 20:37:26 C 23 00 53.99 +35 04 16.8 – V A17
2021-09-30 20:40:36 C 23 00 57.58 +35 05 12.6 – V 203
2021-09-30 20:41:38 C 23 01 03.50 +35 05 22.0 – X 958
2021-09-30 20:45:28 C 23 01 00.24 +35 06 29.9 – Z L74
2021-09-30 20:46:56 C 23 01 01.72 +35 06 41.0 – Z L74
2021-09-30 20:48:07 C 23 01 04.33 +35 06 20.1 – V 104
2021-09-30 20:48:41 C 23 01 03.40 +35 06 52.0 – Z L74
2021-09-30 20:49:32 C 23 01 11.37 +35 06 19.9 – X 958
2021-09-30 20:52:25 C 23 01 09.27 +35 06 37.1 – V 203
2021-09-30 20:57:33 C 23 01 19.22 +35 07 18.1 – X 958
2021-09-30 21:00:38 C 23 01 16.63 +35 07 48.8 – V 104
2021-09-30 21:09:00 C 23 01 24.80 +35 08 47.4 – V 104
2021-09-30 21:28:29 C 23 01 48.07 +35 11 18.2 – V B37
2021-09-30 21:29:43 C 23 01 43.04 +35 11 39.0 – q C82
2021-09-30 21:31:12 C 23 01 44.45 +35 11 48.3 – q C82
2021-09-30 21:34:11 C 23 01 47.40 +35 12 09.7 – q C82
2021-09-30 21:34:47 C 23 01 47.96 +35 12 13.7 – q C82
2021-09-30 21:35:16 C 23 01 54.58 +35 12 05.4 – V B37
2021-09-30 21:42:02 C 23 01 54.90 +35 13 01.6 – q C82
2021-09-30 21:42:14 C 23 02 01.25 +35 12 53.5 – V B37
2021-09-30 21:47:43 C 23 02 06.47 +35 13 30.4 – V B37
2021-09-30 21:51:37 C 23 02 10.20 +35 13 57.5 – V B37
2021-09-30 21:55:30 C 23 02 13.88 +35 14 23.8 – V B37
2021-09-30 22:40:45 C 23 02 51.49 +35 18 40.0 – V 595