2021 SW1

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3949567309 ± 2.00e+00
Semi-major axis (a)1.4078442535 AU ± 3.00e+00
Inclination (i)3.85036953° ± 4.00e+00
Long. of Asc. Node (Ω)2.68261447° ± 5.00e+00
Arg. of Perihelion (ω)298.87234390° ± 6.00e+00
Mean Anomaly (M)202.30232669° ± 8.18e-01
Mean Motion (n)0.5900206900°/day ± 1.89e+00
Perihelion dist (q)0.85181920 AU ± 3.35e+00
Aphelion dist (Q)1.96389060 AU ± 5.04e+00
Orbital Period1.67046290 yr ± 5.34e+00
Physical Parameters
H (abs. magnitude)29.82
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-18
RMS Residual0.231″
Uncertainty3
Orbit TypeApollo
MOID0.001383 AU
Observations Used12
Oppositions1
Arc Total2021-2021
First Observation Used
Last Observation Used2021-09-29
Observations (12)
Date Type RA Dec Mag Band Observatory
2021-09-28 06:55:26 C 23 58 52.549 +20 03 23.79 U F52
2021-09-28 07:12:08 C 23 59 12.665 +20 02 53.82 U F52
2021-09-28 07:28:49 C 23 59 32.236 +20 02 22.97 U F52
2021-09-28 08:23:01 C 00 00 32.564 +20 00 35.22 U F52
2021-09-28 08:41:25 C 00 00 51.968 +19 59 56.06 U F52
2021-09-28 10:46:28 C 00 02 54.192 +19 54 54.97 V F51
2021-09-28 10:48:50 C 00 02 56.352 +19 54 48.61 V F51
2021-09-28 10:50:01 C 00 02 57.406 +19 54 45.73 V F51
2021-09-29 04:28:43 C 00 17 28.28 +19 20 11.4 u H21
2021-09-29 04:36:46 C 00 17 31.52 +19 20 03.1 u H21
2021-09-29 04:44:49 C 00 17 34.75 +19 19 54.6 u H21
2021-09-29 04:48:50 C 00 17 36.34 +19 19 50.3 u H21