2021 SD1

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5583373000
Semi-major axis (a)1.8647224000 AU
Inclination (i)6.60546000°
Long. of Asc. Node (Ω)347.69045000°
Arg. of Perihelion (ω)296.78645000°
Mean Anomaly (M)249.26315000°
Mean Motion (n)0.3870640200°/day
Perihelion dist (q)0.82357830 AU
Aphelion dist (Q)2.90586650 AU
Orbital Period2.54636870 yr
Physical Parameters
H (abs. magnitude)24.91
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.820″
Uncertainty7
Orbit TypeApollo
MOID0.004519 AU
Observations Used22
Oppositions1
Arc Total
First Observation Used
Last Observation Used2021-10-09
Observations (22)
Date Type RA Dec Mag Band Observatory
2021-09-26 05:50:26 C 22 28 42.264 +02 44 35.52 U F51
2021-09-26 06:09:07 C 22 28 45.604 +02 45 05.22 U F51
2021-09-26 06:33:00 C 22 28 49.880 +02 45 42.70 U F51
2021-09-27 02:05:06 C 22 32 24.39 +03 15 40.8 V 807
2021-09-27 02:10:57 C 22 32 25.31 +03 15 49.1 V 807
2021-09-27 02:17:04 C 22 32 26.30 +03 15 57.8 V 807
2021-09-27 05:59:00 C 22 33 06.781 +03 20 18.25 V F51
2021-09-27 06:07:29 C 22 33 08.172 +03 20 30.04 V F51
2021-09-27 06:14:46 C 22 33 09.341 +03 20 40.21 V F51
2021-09-28 03:14:26 C 22 36 36.09 +03 48 00.0 u H21
2021-09-28 03:22:53 C 22 36 37.33 +03 48 10.5 u H21
2021-09-28 03:38:35 C 22 36 39.62 +03 48 30.0 u H21
2021-10-02 06:34:05 C 22 49 41.05 +05 26 40.5 o 291
2021-10-02 06:56:43 C 22 49 43.29 +05 26 57.8 o 291
2021-10-02 08:18:03 C 22 49 53.333 +05 28 10.51 V T12
2021-10-07 10:40:06 C 23 01 18.822 +06 43 31.64 V T12
2021-10-07 10:45:41 C 23 01 19.224 +06 43 34.20 V T12
2021-10-07 10:51:14 C 23 01 19.622 +06 43 36.90 V T12
2021-10-07 10:56:46 C 23 01 20.037 +06 43 39.58 V T12
2021-10-09 08:46:53 C 23 04 52.541 +07 04 10.09 V T12
2021-10-09 09:03:38 C 23 04 53.625 +07 04 17.01 V T12
2021-10-09 09:21:17 C 23 04 54.774 +07 04 24.29 V T12