IAA RAS IAA Minor Planet Database

2021 SM42

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4912504187 ± 9.60e-06
Semi-major axis (a)2.2092769390 AU ± 4.60e-05
Inclination (i)5.13847027° ± 7.56e-05
Long. of Asc. Node (Ω)272.35936985° ± 9.83e-05
Arg. of Perihelion (ω)147.87929069° ± 1.12e-04
Mean Anomaly (M)76.47067114° ± 1.37e-02
Mean Motion (n)0.3001490943°/day ± 9.38e-06
Perihelion dist (q)1.12396872 AU ± 3.16e-05
Aphelion dist (Q)3.29458516 AU ± 7.19e-05
Orbital Period3.28378896 yr ± 1.03e-04
Physical Parameters
H (abs. magnitude)23.49
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.228″
Uncertainty2
Orbit TypeAmor
MOID0.143960 AU
Observations Used47
Oppositions1
Arc Total2021-2022
First Observation Used2021-09-30
Last Observation Used2022-01-04
Observations (50)
Date Type RA Dec Mag Band Observatory
2021-09-30 12:30:23 C 23 56 13.695 +23 39 06.43 – U F51
2021-09-30 12:47:08 C 23 56 13.349 +23 39 15.68 – U F51
2021-09-30 13:03:51 C 23 56 13.033 +23 39 24.71 – U F51
2021-10-25 06:18:28 C 23 58 19.17 +28 20 31.7 – V G96
2021-10-25 06:25:58 C 23 58 19.38 +28 20 35.3 – V G96
2021-10-25 06:33:25 C 23 58 19.54 +28 20 37.8 – V G96
2021-11-05 04:13:49 C 00 14 04.59 +29 39 37.1 – V G96
2021-11-05 04:21:24 C 00 14 05.14 +29 39 39.1 – V G96
2021-11-05 04:29:05 C 00 14 05.77 +29 39 40.9 – V G96
2021-11-05 04:36:41 C 00 14 06.28 +29 39 42.7 – V G96
2021-11-05 05:52:06 C 00 14 11.98 +29 39 59.9 – V I52
2021-11-05 05:58:10 C 00 14 12.43 +29 40 01.2 – V I52
2021-11-05 06:04:14 C 00 14 12.89 +29 40 02.5 – V I52
2021-11-05 06:10:18 C 00 14 13.14 +29 40 03.2 – V I52
2021-11-06 01:35:28 C 00 16 00.84 +29 44 30.2 – u H21
2021-11-06 01:44:14 C 00 16 01.56 +29 44 32.4 – u H21
2021-11-06 03:02:09 C 00 16 09.25 +29 44 55.7 – V I52
2021-11-06 03:17:59 C 00 16 10.39 +29 44 59.1 – V I52
2021-11-06 03:21:18 C 00 16 10.63 +29 44 59.9 – V I52
2021-11-06 03:36:09 C 00 16 11.57 +29 45 02.1 – X 858
2021-11-06 03:38:57 C 00 16 12.01 +29 45 03.9 – V I52
2021-11-06 03:50:04 C 00 16 12.69 +29 45 05.3 – X 858
2021-11-06 04:03:54 C 00 16 13.81 +29 45 08.2 – X 858
2021-11-06 18:54:57 C 00 17 39.21 +29 48 13.3 – V 033
2021-11-06 18:59:06 C 00 17 39.59 +29 48 14.4 – V 033
2021-11-06 19:03:16 C 00 17 39.93 +29 48 15.4 – V 033
2021-11-07 01:58:19 C 00 18 20.49 +29 49 54.2 – u H21
2021-11-07 02:06:06 C 00 18 21.15 +29 49 55.9 – u H21
2021-11-07 02:13:53 C 00 18 21.84 +29 49 58.0 – u H21
2021-11-11 02:13:08 C 00 28 59.66 +30 07 55.3 – V V06
2021-11-11 02:14:17 C 00 28 59.87 +30 07 55.6 – V V06
2021-11-11 02:15:25 C 00 28 59.94 +30 07 55.7 – V V06
2021-11-11 02:44:58 C 00 29 03.23 +30 08 01.4 – V V06
2021-11-28 01:58:15 C 01 39 13.98 +29 50 56.8 – V G96
2021-11-28 02:06:20 C 01 39 15.60 +29 50 54.9 – V G96
2021-11-28 02:14:23 C 01 39 17.23 +29 50 52.8 – V G96
2021-11-28 02:22:28 C 01 39 18.88 +29 50 50.9 – V G96
2021-11-28 05:01:54 C 01 39 53.624 +29 50 11.10 – U F52
2021-11-28 05:05:32 C 01 39 54.337 +29 50 10.37 – U F52
2021-11-28 05:17:28 C 01 39 56.763 +29 50 07.44 – U F52
2021-11-28 05:33:07 C 01 39 59.921 +29 50 03.40 – U F52
2021-11-28 05:36:45 C 01 40 00.669 +29 50 02.60 – U F52
2021-11-28 05:52:22 C 01 40 03.798 +29 49 58.37 – U F52
2021-12-08 04:42:48 C 02 34 02.28 +27 54 39.5 – V G96
2021-12-08 04:50:56 C 02 34 04.05 +27 54 33.9 – V G96
2021-12-08 04:59:02 C 02 34 05.81 +27 54 28.7 – V G96
2021-12-08 05:07:10 C 02 34 07.54 +27 54 24.0 – V G96
2022-01-04 02:12:31 C 04 39 23.12 +20 10 43.2 – u H21
2022-01-04 02:22:43 C 04 39 24.53 +20 10 37.6 – u H21
2022-01-04 02:32:55 C 04 39 25.94 +20 10 31.4 – u H21