Asteroid General Data

2021 US₁

General information

Preliminary designation	2021 US₁
Group	Apollo
Absolute magnitude	27.72
Approximate diameter (m)	8
Approximate mass (kg)	8.01·10⁵
Number of observations	181
Arc length (days)	75

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	201.059449
a – orbit major semiaxis (astronomical units)	1.22311400
e – orbit eccentricity	0.19568000
ω – orbit ascending node-perihelion angle (degrees)	203.304291
Ω – longitude of orbit ascending node (degrees)	220.789624
i – orbit inclination to the ecliptic plane (degrees)	1.281294

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	99.171705	1.21740613	0.18695004	187.892908	229.476425	2.659888	0.98981201	1.343241
01/21/1858	320.406965	1.21437572	0.18555927	188.575540	229.069965	2.666132	0.98903705	1.338228
01/29/1887	301.917591	1.24680642	0.20711491	193.804689	225.006131	1.276421	0.98857422	1.392192
02/07/1916	265.637415	1.24531078	0.20635770	194.742061	224.470522	1.281353	0.98833132	1.389688
02/14/1945	225.128604	1.24528236	0.20649576	195.574675	223.843697	1.279217	0.98813683	1.389640
02/22/1974	191.287294	1.24071101	0.20427507	196.743074	223.230792	1.292023	0.98726468	1.381995
03/02/2003	183.662324	1.24455156	0.20636404	198.168569	222.115531	1.277524	0.98772087	1.388417
03/09/2032	218.260041	1.22321680	0.19572315	203.353310	220.755630	1.281787	0.98380496	1.352869
03/17/2061	42.399860	1.21963328	0.19396871	204.498577	220.177712	1.290697	0.98306259	1.346928
03/25/2090	334.713863	1.19163819	0.18038031	210.960896	218.775485	1.203932	0.97669013	1.300820
04/03/2119	72.811875	1.19355838	0.18128408	217.051570	211.457484	1.058434	0.97718524	1.303966
04/10/2148	227.918122	1.17983465	0.17438178	219.897457	210.523236	1.049195	0.97409298	1.281540
04/18/2177	98.859368	1.18252018	0.17570045	220.933889	209.708986	1.049158	0.97475085	1.285919

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