Asteroid General Data

2021 ER₃

General information

Preliminary designation	2021 ER₃
Group	Apollo
Absolute magnitude	25.99
Approximate diameter (m)	17
Approximate mass (kg)	8.75·10⁶
Number of observations	120
Arc length (days)	9

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	26.593646
a – orbit major semiaxis (astronomical units)	1.94472500
e – orbit eccentricity	0.55977100
ω – orbit ascending node-perihelion angle (degrees)	313.496245
Ω – longitude of orbit ascending node (degrees)	163.004968
i – orbit inclination to the ecliptic plane (degrees)	2.701891

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	284.522759	1.93981619	0.55871394	307.498723	167.677891	2.627334	0.85601384	2.701727
01/21/1858	189.434439	1.94067789	0.55804852	308.589860	166.821299	2.652817	0.85768547	2.703528
01/29/1887	95.461611	1.93964723	0.55871701	309.219754	166.312158	2.669607	0.85593332	2.701374
02/07/1916	3.940767	1.93969876	0.55746733	310.125319	165.602787	2.695616	0.85838007	2.701482
02/14/1945	279.199619	1.93708866	0.55803621	310.735642	165.064512	2.714721	0.85612305	2.696031
02/22/1974	194.623241	1.93650621	0.55762203	311.754914	164.284594	2.731607	0.85666769	2.694815
03/02/2003	120.288942	1.93315491	0.55726823	312.320653	163.764870	2.751785	0.85586910	2.687823
03/09/2032	33.381971	1.94477538	0.55992281	313.497810	162.972988	2.702526	0.85585128	2.712094
03/17/2061	291.161860	1.94181567	0.55881590	314.303215	162.217303	2.722617	0.85669819	2.705905
03/25/2090	188.838037	1.94542632	0.55976668	315.143494	161.665189	2.735917	0.85644150	2.713456
04/03/2119	74.546262	1.94729736	0.55947673	315.936861	161.105372	2.758462	0.85782980	2.717372
04/10/2148	318.609615	1.94685599	0.55890971	316.747847	160.562138	2.780359	0.85873928	2.716448
04/18/2177	203.235036	1.94661975	0.55939161	317.795553	159.675509	2.805576	0.85769699	2.715953

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