Asteroid General Data

2021 HP₁

General information

Preliminary designation	2021 HP₁
Group	Apollo
Absolute magnitude	21.16
Approximate diameter (m)	160
Approximate mass (kg)	6.92·10⁹
Number of observations	47
Arc length (days)	32

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	229.107871
a – orbit major semiaxis (astronomical units)	2.16011200
e – orbit eccentricity	0.77428900
ω – orbit ascending node-perihelion angle (degrees)	158.347528
Ω – longitude of orbit ascending node (degrees)	186.622922
i – orbit inclination to the ecliptic plane (degrees)	8.406867

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	164.683242	2.15881577	0.77702340	152.023582	191.879605	7.307592	0.48136541	3.171933
01/21/1858	211.347391	2.16365837	0.77441853	152.660332	191.350831	7.381471	0.48808123	3.182612
01/29/1887	257.063737	2.16464113	0.77449438	154.095145	190.162232	7.622996	0.48813874	3.184780
02/07/1916	300.769161	2.16018664	0.77705370	154.817900	189.505385	7.764537	0.48160561	3.174955
02/14/1945	344.612774	2.16177079	0.77520267	155.773091	188.723811	7.924460	0.48596030	3.178448
02/22/1974	32.047087	2.16171254	0.77455137	156.915985	187.812312	8.128725	0.48735513	3.178319
03/02/2003	79.677188	2.16132887	0.77500135	157.368003	187.388644	8.210069	0.48629608	3.177473
03/09/2032	129.793536	2.16144518	0.77355702	158.373685	186.591074	8.407846	0.48944409	3.177730
03/17/2061	180.764839	2.15854130	0.77529094	159.415789	185.794157	8.638063	0.48504379	3.171328
03/25/2090	228.600810	2.15817914	0.77584675	160.092519	185.231475	8.783372	0.48376287	3.170530
04/03/2119	276.619204	2.16307209	0.77278680	160.820108	184.700100	8.905203	0.49147854	3.181318
04/10/2148	326.332228	2.16164795	0.77339971	161.828784	183.927864	9.133245	0.48983006	3.178177
04/18/2177	14.983732	2.15914652	0.77406887	162.124385	183.641279	9.209911	0.48781841	3.172662

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