2021 SD3

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.1659786869 ± 1.74e-04
Semi-major axis (a)0.9769452706 AU ± 5.46e-06
Inclination (i)6.28994328° ± 7.14e-03
Long. of Asc. Node (Ω)185.83915509° ± 1.01e-03
Arg. of Perihelion (ω)37.64420167° ± 9.59e-03
Mean Anomaly (M)232.46876424° ± 3.81e-02
Mean Motion (n)1.0207207039°/day ± 8.56e-06
Perihelion dist (q)0.81479318 AU ± 1.70e-04
Aphelion dist (Q)1.13909736 AU ± 1.70e-04
Orbital Period0.96561800 yr ± 8.10e-06
Physical Parameters
H (abs. magnitude)25.12
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.214″
Uncertainty2
Orbit TypeAten
MOID0.049997 AU
Observations Used21
Oppositions1
Arc Total2021-2021
First Observation Used2021-09-30
Last Observation Used2021-10-09
Observations (23)
Date Type RA Dec Mag Band Observatory
2021-09-30 07:44:41 C 23 26 43.561 -03 08 35.79 U F52
2021-09-30 08:00:18 C 23 26 42.471 -03 09 23.78 U F52
2021-09-30 08:15:57 C 23 26 41.379 -03 10 11.95 U F52
2021-09-30 08:31:27 C 23 26 40.270 -03 10 59.67 U F52
2021-09-30 19:00:06 C 23 26 08.84 -03 42 58.5 V N51
2021-09-30 19:09:26 C 23 26 08.32 -03 43 25.5 V N51
2021-10-02 03:03:04 C 23 24 54.13 -05 14 40.1 X 858
2021-10-02 03:11:45 C 23 24 50.95 -05 13 31.9 V 807
2021-10-02 03:14:16 C 23 24 53.49 -05 15 10.7 X 858
2021-10-02 03:15:28 C 23 24 50.72 -05 13 42.1 V 807
2021-10-02 03:19:43 C 23 24 50.47 -05 13 53.8 V 807
2021-10-02 03:25:27 C 23 24 52.87 -05 15 41.3 X 858
2021-10-04 08:48:38 C 23 23 00.739 -07 31 03.72 U F52
2021-10-04 09:21:29 C 23 22 59.023 -07 32 20.76 U F52
2021-10-04 09:37:54 C 23 22 58.169 -07 32 59.49 U F52
2021-10-07 07:38:25 C 23 21 15.06 -10 02 06.5 o 691
2021-10-07 07:59:01 C 23 21 14.30 -10 02 45.0 o 691
2021-10-07 11:17:35 C 23 21 09.972 -10 08 50.40 V T12
2021-10-07 11:18:35 C 23 21 09.939 -10 08 52.24 V T12
2021-10-07 11:20:24 C 23 21 09.875 -10 08 55.61 V T12
2021-10-09 06:04:04 C 23 20 33.07 -11 25 10.9 o 691
2021-10-09 06:30:17 C 23 20 32.27 -11 25 54.6 o 691
2021-10-09 06:56:16 C 23 20 31.47 -11 26 37.0 o 691