Asteroid General Data

2021 ET₁

General information

Preliminary designation	2021 ET₁
Group	Apollo
Absolute magnitude	24.54
Approximate diameter (m)	33
Approximate mass (kg)	6.48·10⁷
Number of observations	76
Arc length (days)	17

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	161.190512
a – orbit major semiaxis (astronomical units)	2.46150200
e – orbit eccentricity	0.59061500
ω – orbit ascending node-perihelion angle (degrees)	150.420917
Ω – longitude of orbit ascending node (degrees)	353.613696
i – orbit inclination to the ecliptic plane (degrees)	8.425144

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	143.064429	2.54558419	0.53898589	144.019679	358.944857	7.714594	1.17355023	4.061457
01/21/1858	194.497659	2.54401069	0.54033370	143.882730	358.715605	7.722147	1.16939597	4.057691
01/29/1887	255.854462	2.53445954	0.54670176	144.441850	358.158240	7.780069	1.14886605	4.034862
02/07/1916	344.871827	2.50184503	0.56434210	147.063918	356.349145	8.031292	1.08994855	3.957229
02/14/1945	119.264690	2.47862052	0.57773943	149.141517	354.982928	8.244942	1.04662371	3.902255
02/22/1974	292.217310	2.46079226	0.58925714	150.329053	354.035885	8.393349	1.01075286	3.860229
03/02/2003	122.628010	2.45904567	0.59235512	150.417301	353.776192	8.420155	1.00241739	3.856120
03/09/2032	311.896127	2.46098686	0.59034104	150.403280	353.607456	8.422915	1.00816533	3.860687
03/17/2061	123.259077	2.48184594	0.57897797	150.656199	353.361114	8.369955	1.04491183	3.909875
03/25/2090	256.250672	2.50404244	0.56550885	151.435450	352.966395	8.340419	1.08798428	3.962444
04/03/2119	346.318467	2.53470062	0.54836034	152.070115	352.571823	8.274180	1.14477132	4.035437
04/10/2148	49.183059	2.54334996	0.54374686	152.115825	352.413283	8.245932	1.16041141	4.056111
04/18/2177	104.526869	2.54179242	0.54413166	151.967074	352.204628	8.250641	1.15872270	4.052385

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