Asteroid General Data

2021 HC₁

General information

Preliminary designation	2021 HC₁
Group	Apollo
Absolute magnitude	28.06
Approximate diameter (m)	7
Approximate mass (kg)	5.01·10⁵
Number of observations	12
Arc length (days)	2

Approaches

Date	Object	r, AU	r, km
04/14/2021 06:44:38 PM	Moon	0.000744	111 245

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	179.304086
a – orbit major semiaxis (astronomical units)	1.15603139
e – orbit eccentricity	0.31291111
ω – orbit ascending node-perihelion angle (degrees)	97.319018
Ω – longitude of orbit ascending node (degrees)	24.902602
i – orbit inclination to the ecliptic plane (degrees)	5.541595

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	241.203076	1.07337435	0.30188462	83.172481	27.140940	5.582849	0.74933914	1.112058
01/21/1858	266.389171	1.08221820	0.30207577	84.707431	26.716391	5.685180	0.75530630	1.125830
01/29/1887	172.930141	1.08361559	0.30207503	84.978443	26.534585	5.681117	0.75628237	1.128011
02/07/1916	88.925556	1.08064921	0.30139028	85.466987	26.238116	5.750124	0.75495204	1.123383
02/14/1945	34.284802	1.07976754	0.30119494	85.883783	25.913580	5.746974	0.75454702	1.122008
02/22/1974	169.638755	1.11939196	0.30597100	92.126307	25.533943	5.715766	0.77689048	1.184333
03/02/2003	331.716243	1.12291807	0.30691312	92.430987	25.174282	5.670760	0.77827978	1.189934
03/09/2032	325.294735	1.15604242	0.31304294	97.323962	24.844700	5.542232	0.79415150	1.242972
03/17/2061	88.733431	1.15641719	0.31321337	97.734556	24.491155	5.509911	0.79421187	1.243576
03/25/2090	144.381483	1.16392482	0.31464559	99.001030	24.282488	5.476917	0.79770101	1.255706
04/03/2119	188.593158	1.16337554	0.31463644	99.227170	24.003809	5.460147	0.79733520	1.254817
04/10/2148	287.985113	1.15705322	0.31359008	98.420170	23.717555	5.442670	0.79421281	1.244602
04/18/2177	42.441926	1.15728456	0.31375120	98.984518	23.317865	5.407835	0.79418513	1.244976

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