IAA RAS IAA Minor Planet Database

2020 SD4

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4661159743 ± 3.18e-04
Semi-major axis (a)2.0140846709 AU ± 1.26e-03
Inclination (i)14.29721303° ± 6.71e-03
Long. of Asc. Node (Ω)1.93456026° ± 2.56e-04
Arg. of Perihelion (ω)322.48477035° ± 2.96e-03
Mean Anomaly (M)301.84038424° ± 6.24e-01
Mean Motion (n)0.3448225745°/day ± 3.23e-04
Perihelion dist (q)1.07528763 AU ± 9.27e-04
Aphelion dist (Q)2.95288171 AU ± 1.95e-03
Orbital Period2.85835777 yr ± 2.67e-03
Physical Parameters
H (abs. magnitude)24.80
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.236″
Uncertainty3
Orbit TypeAmor
MOID0.114781 AU
Observations Used18
Oppositions1
Arc Total2020-2020
First Observation Used2020-09-21
Last Observation Used2020-09-26
Observations (18)
Date Type RA Dec Mag Band Observatory
2020-09-21 10:12:50 C 00 09 15.046 -06 40 06.23 – V F52
2020-09-21 10:30:24 C 00 09 13.581 -06 38 30.91 – V F52
2020-09-21 10:48:00 C 00 09 12.124 -06 36 54.90 – V F52
2020-09-21 11:05:33 C 00 09 10.642 -06 35 19.44 – V F52
2020-09-23 07:54:40 C 00 06 22.32 -02 42 09.8 – V G96
2020-09-23 08:02:49 C 00 06 21.77 -02 41 29.4 – V G96
2020-09-23 08:10:56 C 00 06 21.13 -02 40 49.4 – V G96
2020-09-23 08:19:03 C 00 06 20.53 -02 40 08.8 – V G96
2020-09-23 10:13:20 C 00 06 12.27 -02 30 42.5 – V I52
2020-09-23 10:15:45 C 00 06 12.12 -02 30 30.9 – V I52
2020-09-23 10:18:11 C 00 06 11.91 -02 30 19.2 – V I52
2020-09-24 06:02:18 C 00 05 07.14 -00 55 01.7 – V I52
2020-09-24 06:04:43 C 00 05 06.96 -00 54 51.1 – V I52
2020-09-24 06:07:08 C 00 05 06.78 -00 54 38.8 – V I52
2020-09-26 09:01:13 C 00 02 22.64 +02 51 50.8 – V V06
2020-09-26 09:03:46 C 00 02 22.46 +02 52 01.5 – V V06
2020-09-26 09:06:20 C 00 02 22.31 +02 52 12.5 – V V06
2020-09-26 09:08:53 C 00 02 22.16 +02 52 22.9 – V V06