2021 SD2

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2593932000
Semi-major axis (a)1.1574160000 AU
Inclination (i)2.21409000°
Long. of Asc. Node (Ω)353.82263000°
Arg. of Perihelion (ω)92.44760000°
Mean Anomaly (M)65.37694000°
Mean Motion (n)0.7915345300°/day
Perihelion dist (q)0.85719020 AU
Aphelion dist (Q)1.45764180 AU
Orbital Period1.24518600 yr
Physical Parameters
H (abs. magnitude)26.92
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.870″
Uncertainty6
Orbit TypeApollo
MOID0.011676 AU
Observations Used26
Oppositions1
Arc Total
First Observation Used
Last Observation Used2021-10-07
Observations (26)
Date Type RA Dec Mag Band Observatory
2021-09-29 06:41:50 C 23 21 00.339 +09 42 03.58 U F52
2021-09-29 07:16:39 C 23 20 47.123 +09 44 38.27 U F52
2021-09-29 07:34:05 C 23 20 40.383 +09 45 55.89 U F52
2021-09-29 10:43:14 C 23 19 25.320 +09 59 53.10 V F51
2021-09-29 10:44:24 C 23 19 24.835 +09 59 58.70 V F51
2021-09-29 21:26:28 C 23 15 47.17 +10 48 24.9 V L01
2021-09-29 21:28:38 C 23 15 46.24 +10 48 35.4 V L01
2021-09-29 21:32:04 C 23 15 44.76 +10 48 51.2 V L01
2021-09-29 21:33:00 C 23 15 44.39 +10 48 55.6 V L01
2021-09-29 23:08:55 C 23 15 04.12 +10 56 50.7 V 104
2021-09-29 23:19:32 C 23 14 59.58 +10 57 42.2 V 104
2021-09-29 23:36:48 C 23 14 52.28 +10 59 07.8 V 104
2021-09-29 23:56:07 C 23 14 46.31 +11 00 43.8 V I93
2021-09-30 00:15:59 C 23 14 37.76 +11 02 20.9 V I93
2021-09-30 00:35:59 C 23 14 29.20 +11 03 59.2 V I93
2021-09-30 03:08:34 C 23 13 41.94 +11 17 14.4 u H21
2021-09-30 03:16:37 C 23 13 38.35 +11 17 56.2 u H21
2021-09-30 03:24:41 C 23 13 39.25 +11 18 50.1 X 858
2021-09-30 03:31:40 C 23 13 36.18 +11 19 26.1 X 858
2021-09-30 03:38:47 C 23 13 33.03 +11 20 03.7 X 858
2021-10-01 21:50:25 C 22 53 04.52 +15 40 51.9 V 104
2021-10-01 21:58:45 C 22 52 58.96 +15 41 52.9 V 104
2021-10-01 22:05:57 C 22 52 54.13 +15 42 46.5 V 104
2021-10-07 04:51:00 C 19 39 53.597 +40 45 56.24 V T12
2021-10-07 04:51:40 C 19 39 51.363 +40 46 03.17 V T12
2021-10-07 04:56:43 C 19 39 34.694 +40 46 55.69 V T12