2021 SN1

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.7792190780 ± 6.46e-08
Semi-major axis (a)1.7867932667 AU ± 1.83e-08
Inclination (i)12.37810781° ± 2.03e-05
Long. of Asc. Node (Ω)208.33487970° ± 3.16e-05
Arg. of Perihelion (ω)284.85109878° ± 2.50e-05
Mean Anomaly (M)235.90964910° ± 8.35e-06
Mean Motion (n)0.4126680210°/day ± 6.34e-09
Perihelion dist (q)0.39448986 AU ± 1.15e-07
Aphelion dist (Q)3.17909667 AU ± 1.20e-07
Orbital Period2.38842419 yr ± 3.67e-08
Physical Parameters
H (abs. magnitude)21.07
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.280″
Uncertainty0
Orbit TypeApollo
MOID0.027582 AU
Observations Used90
Oppositions9
Arc Total2009-2024
First Observation Used2009-09-18
Last Observation Used2024-06-06
Observations (93)
Date Type RA Dec Mag Band Observatory
2009-09-18 10:50:23 C 23 11 56.956 +13 10 42.93 V F51
2009-09-18 11:03:10 C 23 11 55.455 +13 10 33.90 V F51
2021-09-09 13:09:30 C 00 41 32.016 +21 27 08.16 V F52
2021-09-09 13:25:21 C 00 41 31.216 +21 27 09.53 V F52
2021-09-09 13:41:11 C 00 41 30.401 +21 27 10.40 V F52
2021-09-09 13:57:07 C 00 41 29.556 +21 27 11.76 V F52
2021-09-16 07:26:27 C 00 31 31.25 +21 27 31.1 V G96
2021-09-16 07:33:59 C 00 31 30.67 +21 27 30.6 V G96
2021-09-16 07:41:31 C 00 31 30.00 +21 27 31.0 V G96
2021-09-28 06:38:34 C 23 57 19.976 +19 50 06.62 U F52
2021-09-28 07:12:08 C 23 57 14.030 +19 49 43.64 U F52
2021-09-28 07:28:49 C 23 57 11.066 +19 49 32.12 U F52
2021-09-28 10:46:28 C 23 56 35.496 +19 47 11.80 V F51
2021-09-28 10:47:39 C 23 56 35.296 +19 47 11.01 V F51
2021-09-28 10:48:50 C 23 56 35.078 +19 47 10.14 V F51
2021-09-28 22:34:48 C 23 54 30.60 +19 38 15.0 V L01
2021-09-28 22:37:27 C 23 54 30.10 +19 38 13.3 V L01
2021-09-28 22:39:42 C 23 54 29.71 +19 38 11.3 V L01
2021-09-28 22:41:57 C 23 54 29.29 +19 38 09.1 V L01
2021-09-28 22:44:45 C 23 54 28.74 +19 38 06.5 V L01
2021-09-29 01:42:38 C 23 53 57.83 +19 35 51.3 X W34
2021-09-29 02:02:42 C 23 53 54.13 +19 35 35.9 X W34
2021-09-29 02:22:41 C 23 53 50.40 +19 35 20.9 X W34
2021-09-29 02:34:57 C 23 53 48.13 +19 35 09.3 u H21
2021-09-29 02:38:58 C 23 53 47.39 +19 35 06.2 u H21
2021-09-29 02:43:40 C 23 53 46.52 +19 35 02.7 u H21
2021-09-29 07:05:25 C 23 52 58.927 +19 31 43.13 U F51
2021-09-29 07:22:00 C 23 52 55.775 +19 31 30.18 U F51
2021-09-29 07:38:32 C 23 52 52.631 +19 31 17.23 U F51
2021-10-02 22:55:20 C 23 34 43.05 +18 03 59.8 V G40
2021-10-02 23:10:16 C 23 34 39.44 +18 03 41.5 V G40
2021-10-04 05:59:42 C 23 27 09.005 +17 23 10.32 U F51
2021-10-04 06:18:28 C 23 27 04.106 +17 22 44.31 U F51
2021-10-04 09:28:53 C 23 26 13.83 +17 18 15.9 V T05
2021-10-04 09:33:31 C 23 26 12.57 +17 18 08.8 V T05
2021-10-04 09:41:26 C 23 26 10.52 +17 17 57.0 V T05
2021-10-04 09:56:01 C 23 26 06.60 +17 17 36.6 V T05
2021-10-04 16:37:40 C 23 24 21.88 +17 07 42.4 V D29
2021-10-04 16:54:13 C 23 24 17.44 +17 07 17.8 V D29
2021-10-04 17:10:45 C 23 24 12.98 +17 06 53.1 V D29
2021-10-06 10:21:45 C 23 12 46.838 +15 59 43.69 U F51
2021-10-06 10:38:21 C 23 12 41.824 +15 59 13.63 U F51
2021-10-06 10:54:53 C 23 12 36.275 +15 58 40.31 U F51
2021-10-06 11:11:24 C 23 12 31.847 +15 58 13.69 U F51
2021-10-08 06:39:11 C 22 58 58.17 +14 32 05.8 o 691
2021-10-08 06:40:39 C 22 58 57.70 +14 32 02.9 o 691
2021-10-08 06:42:05 C 22 58 57.15 +14 31 59.6 o 691
2021-10-08 19:54:51 C 22 54 31.75 +14 02 16.5 X Z43
2021-10-08 20:15:00 C 22 54 24.72 +14 01 30.8 X Z43
2021-10-08 20:35:08 C 22 54 17.66 +14 00 44.0 X Z43