Asteroid General Data

2021 TH₁₂

General information

Preliminary designation	2021 TH₁₂
Group	Apollo
Absolute magnitude	22.85
Approximate diameter (m)	71
Approximate mass (kg)	6.70·10⁸
Number of observations	178
Arc length (days)	30

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	14.371129
a – orbit major semiaxis (astronomical units)	1.82614300
e – orbit eccentricity	0.48530000
ω – orbit ascending node-perihelion angle (degrees)	132.100577
Ω – longitude of orbit ascending node (degrees)	201.781584
i – orbit inclination to the ecliptic plane (degrees)	16.370790

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	343.669364	1.82614801	0.48699075	129.077261	204.104157	16.042950	0.93683081	2.467769
01/21/1858	259.597828	1.82513642	0.48616439	129.513124	203.789702	16.088252	0.93782009	2.465719
01/29/1887	174.978084	1.82553731	0.48661690	130.075067	203.378895	16.145398	0.93720000	2.466532
02/07/1916	86.424924	1.82681635	0.48638121	130.512212	203.058484	16.188637	0.93828720	2.469124
02/14/1945	356.937610	1.82621417	0.48625200	130.983656	202.681082	16.245056	0.93821387	2.467903
02/22/1974	270.672384	1.82598277	0.48554925	131.379898	202.373713	16.288300	0.93937821	2.467434
03/02/2003	181.609799	1.82715798	0.48540437	131.816455	202.025712	16.325679	0.94024752	2.469817
03/09/2032	93.030637	1.82613623	0.48473325	132.240572	201.699201	16.385751	0.94094728	2.467746
03/17/2061	7.653154	1.82686898	0.48427877	132.614632	201.424833	16.424704	0.94215513	2.469231
03/25/2090	279.215862	1.82690542	0.48435721	133.168081	201.029620	16.486059	0.94203060	2.469305
04/03/2119	190.162629	1.82627042	0.48375470	133.500909	200.749824	16.523915	0.94280352	2.468018
04/10/2148	101.210226	1.82691559	0.48386682	134.062727	200.363561	16.582808	0.94293176	2.469325
04/18/2177	11.232898	1.82740357	0.48353677	134.389446	200.102895	16.617659	0.94378675	2.470315

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