2021 SM1

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3440148227 ± 3.06e-06
Semi-major axis (a)1.4236204106 AU ± 5.97e-06
Inclination (i)2.15499162° ± 1.67e-05
Long. of Asc. Node (Ω)206.03265696° ± 1.95e-05
Arg. of Perihelion (ω)219.66270900° ± 2.47e-05
Mean Anomaly (M)128.34620547° ± 5.31e-03
Mean Motion (n)0.5802577736°/day ± 3.65e-06
Perihelion dist (q)0.93387389 AU ± 5.85e-06
Aphelion dist (Q)1.91336693 AU ± 9.13e-06
Orbital Period1.69860074 yr ± 1.07e-05
Physical Parameters
H (abs. magnitude)25.55
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.280″
Uncertainty1
Orbit TypeApollo
MOID0.001181 AU
Observations Used108
Oppositions1
Arc Total2021-2022
First Observation Used2021-09-27
Last Observation Used2022-02-03
Observations (111)
Date Type RA Dec Mag Band Observatory
2021-09-27 08:39:49 C 00 10 20.452 +13 20 11.00 U F51
2021-09-27 08:55:39 C 00 10 21.676 +13 20 28.35 U F51
2021-09-27 09:11:32 C 00 10 22.891 +13 20 45.77 U F51
2021-09-27 09:27:26 C 00 10 24.114 +13 21 03.04 U F51
2021-09-27 12:35:37 C 00 10 38.749 +13 24 19.39 V F51
2021-09-27 12:36:33 C 00 10 38.815 +13 24 20.25 V F51
2021-09-27 20:46:26 C 00 11 34.32 +13 32 50.9 V N51
2021-09-27 21:04:59 C 00 11 36.02 +13 33 10.7 V N51
2021-09-28 04:10:39 C 00 12 31.80 +13 40 59.6 u H21
2021-09-28 04:14:41 C 00 12 32.19 +13 41 04.2 u H21
2021-09-28 04:18:43 C 00 12 32.53 +13 41 09.1 u H21
2021-09-28 04:22:44 C 00 12 32.92 +13 41 14.0 u H21
2021-09-28 04:59:36 C 00 12 39.00 +13 42 07.2 V V06
2021-09-28 05:01:32 C 00 12 39.19 +13 42 09.2 V V06
2021-09-28 05:03:28 C 00 12 39.36 +13 42 11.7 V V06
2021-09-28 05:05:24 C 00 12 39.55 +13 42 13.9 V V06
2021-09-29 04:58:00 C 00 15 41.41 +14 10 53.7 V V06
2021-09-29 04:59:57 C 00 15 41.60 +14 10 56.2 V V06
2021-09-29 05:01:52 C 00 15 41.84 +14 10 59.3 V V06
2021-09-29 05:03:48 C 00 15 42.04 +14 11 01.6 V V06
2021-09-30 20:04:54 C 00 21 36.52 +15 04 15.8 V 104
2021-09-30 20:13:15 C 00 21 37.73 +15 04 28.2 V 104
2021-10-02 09:54:45 C 00 28 43.281 +16 07 54.76 V T12
2021-10-02 09:55:36 C 00 28 43.428 +16 07 56.37 V T12
2021-10-02 09:56:54 C 00 28 43.644 +16 07 58.76 V T12
2021-10-02 09:59:17 C 00 28 37.39 +16 07 20.5 o 291
2021-10-02 10:00:53 C 00 28 37.67 +16 07 23.3 o 291
2021-10-02 10:02:30 C 00 28 37.97 +16 07 26.1 o 291
2021-10-03 05:56:51 C 00 33 20.80 +16 45 42.7 V 703
2021-10-03 06:04:28 C 00 33 22.37 +16 45 58.4 V 703
2021-10-03 06:31:22 C 00 33 27.91 +16 46 52.5 V 703
2021-10-03 07:49:13 C 00 33 51.928 +16 49 58.61 U F52
2021-10-03 08:04:43 C 00 33 55.155 +16 50 32.13 U F52
2021-10-03 08:20:13 C 00 33 58.356 +16 51 05.36 U F52
2021-10-03 11:47:23 C 00 34 35.74 +16 57 19.3 o 691
2021-10-03 11:52:29 C 00 34 36.99 +16 57 29.1 o 691
2021-10-03 11:57:36 C 00 34 38.19 +16 57 38.6 o 691
2021-10-03 15:21:13 C 00 35 41.97 +17 05 14.6 V D29
2021-10-03 15:41:35 C 00 35 46.38 +17 05 58.1 V D29
2021-10-03 16:01:56 C 00 35 50.81 +17 06 42.4 V D29
2021-10-03 23:31:39 C 00 37 50.36 +17 22 20.3 V K88
2021-10-03 23:34:29 C 00 37 51.05 +17 22 27.1 V K88
2021-10-03 23:37:20 C 00 37 51.75 +17 22 32.9 V K88
2021-10-07 12:30:55 C 01 11 34.891 +21 32 59.54 V T12
2021-10-07 12:31:23 C 01 11 35.125 +21 33 01.21 V T12
2021-10-07 12:31:52 C 01 11 35.368 +21 33 03.05 V T12
2021-10-08 09:37:56 C 01 24 52.15 +22 58 08.7 V V06
2021-10-08 09:38:13 C 01 24 52.33 +22 58 09.8 V V06
2021-10-08 09:38:29 C 01 24 52.51 +22 58 10.9 V V06
2021-10-08 09:38:46 C 01 24 52.68 +22 58 12.1 V V06