2021 SG

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.7229159559
Semi-major axis (a)1.7111837308 AU
Inclination (i)3.16643762°
Long. of Asc. Node (Ω)351.67348436°
Arg. of Perihelion (ω)257.18546010° ± 6.00e+00
Mean Anomaly (M)333.07638869°
Mean Motion (n)0.4403118700°/day
Perihelion dist (q)0.47414210 AU
Aphelion dist (Q)2.94821870 AU
Orbital Period2.23843090 yr
Physical Parameters
H (abs. magnitude)24.01
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-18
RMS Residual0.211″
Uncertainty
Orbit TypeApollo
MOID0.002238 AU
Observations Used113
Oppositions1
Arc Total2021-2021
First Observation Used
Last Observation Used2021-09-24
Observations (133)
Date Type RA Dec Mag Band Observatory
2021-09-17 21:46:47 C 22 55 48.15 +04 01 53.5 q L47
2021-09-17 21:50:16 C 22 55 49.09 +04 01 06.1 q L47
2021-09-17 22:16:14 C 22 56 01.46 +03 54 16.7 V Z80
2021-09-17 22:25:54 C 22 56 04.14 +03 52 10.6 V Z80
2021-09-17 22:35:34 C 22 56 06.78 +03 50 05.7 V Z80
2021-09-18 01:35:29 C 22 56 53.52 +03 18 17.0 V G40
2021-09-18 01:40:02 C 22 56 54.35 +03 17 29.3 V G40
2021-09-18 01:50:15 C 22 56 56.23 +03 15 42.8 V G40
2021-09-18 01:55:14 C 22 56 57.14 +03 14 52.2 V G40
2021-09-18 02:15:33 C 22 57 33.61 +03 09 56.7 u H21
2021-09-18 02:17:19 C 22 57 33.95 +03 09 39.4 u H21
2021-09-18 02:19:30 C 22 57 34.38 +03 09 17.7 u H21
2021-09-18 02:21:12 C 22 57 34.70 +03 09 01.0 u H21
2021-09-18 02:22:52 C 22 57 35.03 +03 08 44.7 u H21
2021-09-18 02:54:27 C 22 57 20.93 +03 12 02.7 X Y00
2021-09-18 02:57:18 C 22 57 21.36 +03 11 34.8 X Y00
2021-09-18 03:00:10 C 22 57 21.76 +03 11 06.5 X Y00
2021-09-18 20:33:31 C 23 00 45.56 +01 16 44.9 Z J57
2021-09-18 20:34:46 C 23 00 45.62 +01 16 40.2 Z J57
2021-09-18 20:35:58 C 23 00 45.70 +01 16 35.3 Z J57
2021-09-18 20:37:12 C 23 00 45.75 +01 16 30.9 Z J57
2021-09-18 20:38:23 C 23 00 45.83 +01 16 26.0 Z J57
2021-09-18 20:42:40 C 23 00 46.05 +01 16 09.8 Z J57
2021-09-18 23:30:20 C 23 00 52.81 +01 05 22.8 V Z80
2021-09-18 23:31:38 C 23 00 53.08 +01 05 18.5 V J95
2021-09-18 23:32:35 C 23 00 53.13 +01 05 15.3 V J95
2021-09-18 23:36:12 C 23 00 53.11 +01 05 02.7 V Z80
2021-09-22 22:20:53 C 23 04 24.51 -00 47 30.0 V J95
2021-09-22 22:39:44 C 23 04 24.45 -00 47 38.1 V J95
2021-09-24 07:39:42 C 23 04 48.67 -00 58 22.6 V G96
2021-09-24 07:46:41 C 23 04 48.63 -00 58 24.3 V G96
2021-09-24 07:53:39 C 23 04 48.56 -00 58 26.1 V G96
2021-09-24 08:00:38 C 23 04 48.55 -00 58 28.0 V G96