2021 SW2

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.7165351941 ± 6.53e-04
Semi-major axis (a)2.0129844931 AU ± 3.78e-03
Inclination (i)2.17511149° ± 1.66e-03
Long. of Asc. Node (Ω)173.49214390° ± 7.90e-03
Arg. of Perihelion (ω)96.67554674° ± 8.99e-03
Mean Anomaly (M)180.96959967° ± 1.53e+00
Mean Motion (n)0.3451053024°/day ± 9.71e-04
Perihelion dist (q)0.57061026 AU ± 1.70e-03
Aphelion dist (Q)3.45535873 AU ± 6.61e-03
Orbital Period2.85601605 yr ± 8.04e-03
Physical Parameters
H (abs. magnitude)25.73
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.230″
Uncertainty4
Orbit TypeApollo
MOID2.472018 AU
Observations Used28
Oppositions1
Arc Total2021-2021
First Observation Used2021-09-29
Last Observation Used2021-10-03
Observations (29)
Date Type RA Dec Mag Band Observatory
2021-09-29 11:15:33 C 00 37 54.762 -05 40 28.91 U F51
2021-09-29 11:31:38 C 00 37 49.704 -05 39 58.44 U F51
2021-09-29 11:47:47 C 00 37 44.675 -05 39 27.77 U F51
2021-09-29 13:55:36 C 00 37 06.501 -05 35 28.16 V F51
2021-09-29 13:56:46 C 00 37 06.167 -05 35 26.19 V F51
2021-09-29 17:12:19 C 00 36 27.96 -05 30 13.9 V N51
2021-09-29 17:20:57 C 00 36 25.54 -05 29 59.3 V N51
2021-09-29 17:29:33 C 00 36 23.17 -05 29 44.2 V N51
2021-09-29 21:05:32 C 00 35 33.42 -05 24 13.1 V L06
2021-09-29 21:06:48 C 00 35 33.13 -05 24 10.8 V L06
2021-09-29 21:07:36 C 00 35 32.91 -05 24 06.8 V 104
2021-09-29 21:07:45 C 00 35 32.88 -05 24 09.9 V L06
2021-09-29 21:14:49 C 00 35 31.05 -05 23 55.7 V 104
2021-09-29 21:22:01 C 00 35 29.23 -05 23 44.4 V 104
2021-09-30 01:42:54 C 00 34 25.90 -05 17 05.1 V I93
2021-09-30 01:53:04 C 00 34 23.52 -05 16 50.3 V I93
2021-09-30 02:03:13 C 00 34 21.10 -05 16 35.0 V I93
2021-09-30 08:33:38 C 00 33 10.789 -05 06 45.73 U F51
2021-09-30 08:55:00 C 00 33 06.063 -05 06 18.04 U F51
2021-09-30 09:17:44 C 00 33 01.033 -05 05 48.56 U F51
2021-09-30 09:40:50 C 00 32 55.930 -05 05 18.68 U F51
2021-10-01 21:46:38 C 00 27 44.24 -04 29 00.8 V L01
2021-10-01 21:51:07 C 00 27 43.61 -04 28 57.2 V L01
2021-10-01 21:55:37 C 00 27 43.08 -04 28 53.4 V L01
2021-10-01 22:00:47 C 00 27 42.39 -04 28 49.9 V L01
2021-10-01 22:05:28 C 00 27 41.74 -04 28 45.6 V L01
2021-10-03 08:31:33 C 00 24 33.438 -04 05 05.57 U F52
2021-10-03 08:46:19 C 00 24 32.007 -04 04 57.43 U F52
2021-10-03 09:01:08 C 00 24 30.569 -04 04 49.19 U F52