2021 SY3

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2585281038 ± 1.49e-04
Semi-major axis (a)0.8602353615 AU ± 2.73e-05
Inclination (i)4.99968722° ± 3.69e-03
Long. of Asc. Node (Ω)3.93287429° ± 1.53e-03
Arg. of Perihelion (ω)219.61651600° ± 4.46e-03
Mean Anomaly (M)190.55989494° ± 1.42e-01
Mean Motion (n)1.2353395324°/day ± 5.88e-05
Perihelion dist (q)0.63784034 AU ± 1.29e-04
Aphelion dist (Q)1.08263038 AU ± 1.32e-04
Orbital Period0.79785861 yr ± 3.80e-05
Physical Parameters
H (abs. magnitude)27.00
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.520″
Uncertainty3
Orbit TypeAten
MOID0.000628 AU
Observations Used25
Oppositions1
Arc Total2021-2021
First Observation Used2021-09-30
Last Observation Used2021-10-11
Observations (25)
Date Type RA Dec Mag Band Observatory
2021-09-30 10:54:38 C 00 32 10.55 +28 32 16.6 V T05
2021-09-30 10:59:16 C 00 32 00.41 +28 31 29.0 V T05
2021-09-30 11:07:12 C 00 31 42.63 +28 30 04.2 V T05
2021-09-30 11:24:27 C 00 31 04.41 +28 27 00.1 V T05
2021-09-30 20:33:08 C 00 15 06.14 +26 51 38.2 X Z41
2021-09-30 20:39:33 C 00 14 54.91 +26 50 41.9 X Z41
2021-09-30 20:42:03 C 00 14 50.56 +26 50 20.7 X Z41
2021-09-30 20:49:37 C 00 14 37.32 +26 49 14.4 X Z41
2021-09-30 20:55:01 C 00 14 27.83 +26 48 27.3 X Z41
2021-09-30 20:55:03 C 00 14 27.77 +26 48 26.6 X Z41
2021-09-30 20:57:17 C 00 14 23.91 +26 48 07.4 X Z41
2021-10-03 04:25:23 C 23 18 22.48 +20 29 13.0 V 703
2021-10-03 04:32:57 C 23 18 17.18 +20 28 38.0 V 703
2021-10-03 04:40:32 C 23 18 11.83 +20 28 03.4 V 703
2021-10-03 04:48:06 C 23 18 06.52 +20 27 27.9 V 703
2021-10-04 05:33:17 C 23 05 40.860 +18 45 04.37 U F51
2021-10-04 05:52:10 C 23 05 31.476 +18 44 01.87 U F51
2021-10-04 06:10:58 C 23 05 22.065 +18 42 59.25 U F51
2021-10-07 05:36:34 C 22 44 46.837 +15 37 17.65 U F51
2021-10-07 05:53:53 C 22 44 42.582 +15 36 47.69 U F51
2021-10-07 06:11:13 C 22 44 38.302 +15 36 18.09 U F51
2021-10-11 09:02:30 C 22 32 05.205 +13 24 51.24 U F51
2021-10-11 09:19:18 C 22 32 03.196 +13 24 34.20 U F51
2021-10-11 09:36:05 C 22 32 01.202 +13 24 17.09 U F51
2021-10-11 09:52:52 C 22 31 59.261 +13 23 59.97 U F51