Asteroid General Data

2012 HE

General information

Preliminary designation	2012 HE
Group	Apollo
Absolute magnitude	25.75
Approximate diameter (m)	19
Approximate mass (kg)	1.22·10⁷
Number of observations	31
Arc length (days)	5

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	175.556274
a – orbit major semiaxis (astronomical units)	2.16860900
e – orbit eccentricity	0.53880800
ω – orbit ascending node-perihelion angle (degrees)	196.642242
Ω – longitude of orbit ascending node (degrees)	32.613774
i – orbit inclination to the ecliptic plane (degrees)	7.867602

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	347.751522	2.17461476	0.53501520	192.084486	35.045766	8.233801	1.01116282	3.206816
01/21/1858	0.769246	2.17716477	0.53613926	192.869891	34.652520	8.164435	1.00990126	3.212459
01/29/1887	14.990371	2.17588857	0.53575363	193.614213	34.292408	8.106279	1.01014837	3.209635
02/07/1916	28.135963	2.17590134	0.53748439	193.825650	34.049532	8.090263	1.00638834	3.209663
02/14/1945	36.890746	2.17881582	0.53711069	194.581359	33.609063	8.010709	1.00855056	3.216114
02/22/1974	43.184686	2.18015365	0.53550714	195.467455	33.230602	7.934145	1.01266580	3.219076
03/02/2003	52.791489	2.17979166	0.53642063	196.202092	32.828587	7.871887	1.01050644	3.218275
03/09/2032	74.536514	2.16195696	0.53785298	197.046489	32.535336	7.820387	0.99914196	3.178858
03/17/2061	112.798499	2.16399746	0.53600921	197.674231	32.137506	7.752716	1.00407490	3.183360
03/25/2090	152.305851	2.16544133	0.53516307	198.590816	31.703584	7.675352	1.00657709	3.186546
04/03/2119	191.745817	2.17017816	0.53739213	199.081287	31.382261	7.609623	1.00394150	3.197008
04/10/2148	224.502707	2.16744122	0.53659530	199.585377	30.955009	7.560206	1.00440245	3.190962
04/18/2177	259.098301	2.16737967	0.53715515	200.470658	30.511592	7.488117	1.00316053	3.190826

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