2021 SQ4

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5140006461 ± 4.19e-05
Semi-major axis (a)2.6557858154 AU ± 2.62e-04
Inclination (i)21.38313109° ± 9.76e-04
Long. of Asc. Node (Ω)17.69373254° ± 1.81e-04
Arg. of Perihelion (ω)334.40193838° ± 3.45e-04
Mean Anomaly (M)348.07989283° ± 5.13e-02
Mean Motion (n)0.2277312897°/day ± 3.37e-05
Perihelion dist (q)1.29071019 AU ± 1.69e-04
Aphelion dist (Q)4.02086144 AU ± 4.12e-04
Orbital Period4.32802310 yr ± 6.41e-04
Physical Parameters
H (abs. magnitude)21.94
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.173″
Uncertainty2
Orbit TypeAmor
MOID0.312047 AU
Observations Used25
Oppositions1
Arc Total2021-2021
First Observation Used2021-09-28
Last Observation Used2021-11-05
Observations (26)
Date Type RA Dec Mag Band Observatory
2021-09-28 10:58:25 C 00 40 26.222 -19 43 30.99 U F51
2021-09-28 11:29:01 C 00 40 23.385 -19 42 01.49 U F51
2021-09-28 11:44:19 C 00 40 21.950 -19 41 16.86 U F51
2021-09-29 09:58:12 C 00 38 29.567 -18 36 06.87 U F51
2021-09-29 10:06:21 C 00 38 28.809 -18 35 43.09 U F51
2021-09-29 10:15:20 C 00 38 27.975 -18 35 16.49 U F51
2021-09-29 10:24:18 C 00 38 27.147 -18 34 49.84 U F51
2021-09-30 09:00:01 C 00 36 33.744 -17 27 58.31 U F51
2021-09-30 09:22:48 C 00 36 31.656 -17 26 50.71 U F51
2021-09-30 09:45:54 C 00 36 29.542 -17 25 42.11 U F51
2021-09-30 21:51:10 C 00 35 29.43 -16 49 49.7 V I93
2021-09-30 22:01:04 C 00 35 28.64 -16 49 20.7 V I93
2021-09-30 22:10:57 C 00 35 27.75 -16 48 51.3 V I93
2021-10-04 04:40:39 C 00 29 06.14 -12 53 07.1 X 858
2021-10-04 04:54:54 C 00 29 04.93 -12 52 24.0 X 858
2021-10-05 09:29:49 C 00 26 51.271 -11 26 17.88 U F51
2021-10-05 09:41:01 C 00 26 50.333 -11 25 44.62 U F51
2021-10-05 10:03:25 C 00 26 48.435 -11 24 37.15 U F51
2021-10-26 03:40:32 C 00 01 24.66 +10 03 52.8 V V06
2021-10-26 03:45:06 C 00 01 24.54 +10 04 02.0 V V06
2021-10-31 05:25:18 C 23 59 28.822 +13 48 10.95 U F51
2021-10-31 05:43:22 C 23 59 28.573 +13 48 41.87 U F51
2021-10-31 06:19:52 C 23 59 28.047 +13 49 43.81 U F51
2021-11-05 01:14:21 C 23 59 07.70 +16 49 39.3 u H21
2021-11-05 01:24:17 C 23 59 07.68 +16 49 53.7 u H21
2021-11-05 01:36:50 C 23 59 07.67 +16 50 11.8 u H21