IAA RAS IAA Minor Planet Database

2021 SF

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2898871060 ± 2.48e-04
Semi-major axis (a)1.4030413134 AU ± 5.06e-04
Inclination (i)19.76931575° ± 1.02e-02
Long. of Asc. Node (Ω)176.04634688° ± 4.14e-04
Arg. of Perihelion (ω)136.37401949° ± 7.75e-03
Mean Anomaly (M)207.31202454° ± 5.07e-01
Mean Motion (n)0.5930708618°/day ± 3.21e-04
Perihelion dist (q)0.99631773 AU ± 5.01e-04
Aphelion dist (Q)1.80976490 AU ± 7.40e-04
Orbital Period1.66190307 yr ± 8.99e-04
Physical Parameters
H (abs. magnitude)23.96
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.269″
Uncertainty3
Orbit TypeApollo
MOID0.049416 AU
Observations Used45
Oppositions1
Arc Total2021-2021
First Observation Used2021-09-16
Last Observation Used2021-09-29
Observations (47)
Date Type RA Dec Mag Band Observatory
2021-09-16 03:41:53 C 22 02 54.96 +15 55 25.2 – V G96
2021-09-16 03:52:47 C 22 03 02.44 +15 52 24.9 – V G96
2021-09-16 04:01:03 C 22 03 08.04 +15 50 09.8 – V G96
2021-09-16 04:09:17 C 22 03 13.65 +15 47 54.3 – V G96
2021-09-16 07:44:11 C 22 05 37.11 +14 49 03.8 – V G96
2021-09-16 07:44:23 C 22 05 37.26 +14 49 00.0 – V G96
2021-09-16 07:44:34 C 22 05 37.40 +14 48 57.2 – V G96
2021-09-16 07:44:46 C 22 05 37.51 +14 48 54.0 – V G96
2021-09-16 08:46:42 C 22 06 19.05 +14 31 50.9 – V G96
2021-09-16 08:46:54 C 22 06 19.17 +14 31 47.7 – V G96
2021-09-16 08:47:05 C 22 06 19.30 +14 31 44.4 – V G96
2021-09-16 08:47:17 C 22 06 19.44 +14 31 41.3 – V G96
2021-09-16 20:14:52 C 22 14 26.05 +11 23 27.0 – X 958
2021-09-16 20:23:37 C 22 14 28.82 +11 20 57.7 – o K88
2021-09-16 20:25:11 C 22 14 32.78 +11 20 38.7 – X 958
2021-09-16 20:27:17 C 22 14 31.25 +11 19 57.4 – o K88
2021-09-16 20:35:29 C 22 14 39.43 +11 17 51.8 – X 958
2021-09-16 21:14:15 C 22 15 04.10 +11 07 02.7 – V J95
2021-09-16 21:17:58 C 22 15 06.49 +11 06 02.2 – V J95
2021-09-16 21:20:35 C 22 15 08.19 +11 05 19.6 – V J95
2021-09-16 22:22:50 C 22 15 48.23 +10 48 25.7 – V Z80
2021-09-16 22:34:11 C 22 15 55.53 +10 45 21.3 – V Z80
2021-09-16 22:45:42 C 22 16 02.94 +10 42 13.1 – V Z80
2021-09-17 03:48:39 C 22 19 30.00 +09 20 53.3 – q 858
2021-09-17 03:52:00 C 22 19 32.11 +09 19 59.2 – q 858
2021-09-17 03:55:25 C 22 19 34.24 +09 19 04.2 – q 858
2021-09-17 04:23:29 C 22 19 48.94 +09 11 21.1 – u H21
2021-09-17 04:26:16 C 22 19 50.68 +09 10 35.9 – u H21
2021-09-17 04:29:04 C 22 19 52.42 +09 09 50.8 – u H21
2021-09-17 04:31:51 C 22 19 54.16 +09 09 05.7 – u H21
2021-09-18 13:24:34 C 22 40 25.50 +00 40 43.7 – V 474
2021-09-18 13:25:51 C 22 40 26.18 +00 40 25.4 – V 474
2021-09-18 13:26:29 C 22 40 26.59 +00 40 15.2 – V 474
2021-09-18 13:27:08 C 22 40 26.93 +00 40 06.1 – V 474
2021-09-18 13:27:46 C 22 40 27.31 +00 39 56.4 – V 474
2021-09-24 01:55:51 C 23 42 03.92 -23 09 33.6 – u 807
2021-09-24 02:00:23 C 23 42 05.39 -23 10 05.2 – u 807
2021-09-24 02:04:56 C 23 42 06.94 -23 10 37.7 – u 807
2021-09-27 02:38:48 C 00 04 27.06 -30 00 16.4 – u 807
2021-09-27 02:43:23 C 00 04 28.13 -30 00 36.5 – u 807
2021-09-27 02:48:00 C 00 04 29.27 -30 00 57.4 – u 807
2021-09-28 03:32:18 C 00 10 45.88 -31 42 54.7 – u 807
2021-09-28 03:36:38 C 00 10 46.86 -31 43 10.9 – u 807
2021-09-28 03:40:58 C 00 10 47.83 -31 43 27.5 – u 807
2021-09-29 09:19:24 C 00 17 36.584 -33 27 45.27 – U F51
2021-09-29 09:31:32 C 00 17 38.900 -33 28 23.94 – U F51
2021-09-29 09:43:36 C 00 17 41.214 -33 29 02.71 – U F51