Asteroid General Data

2021 HD₃

General information

Preliminary designation	2021 HD₃
Group	Apollo
Absolute magnitude	24.42
Approximate diameter (m)	35
Approximate mass (kg)	7.65·10⁷
Number of observations	58
Arc length (days)	23

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	178.948544
a – orbit major semiaxis (astronomical units)	1.64332300
e – orbit eccentricity	0.39008500
ω – orbit ascending node-perihelion angle (degrees)	209.807710
Ω – longitude of orbit ascending node (degrees)	55.132277
i – orbit inclination to the ecliptic plane (degrees)	9.360860

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	120.714756	1.63991478	0.38759728	207.227700	56.651515	9.551195	1.00428827	2.100064
01/21/1858	66.112774	1.63780802	0.38685899	207.630513	56.437696	9.541084	1.00420727	2.096018
01/29/1887	8.318780	1.63877885	0.38754956	208.099469	56.193058	9.489157	1.00367083	2.097882
02/07/1916	310.801214	1.63810328	0.38721665	208.434107	56.019262	9.477085	1.00380241	2.096585
02/14/1945	251.769858	1.63949987	0.38798959	208.814004	55.764994	9.450123	1.00339098	2.099267
02/22/1974	184.295736	1.64139594	0.38886265	209.147430	55.547080	9.414294	1.00311836	2.102910
03/02/2003	110.552335	1.64144584	0.38920738	209.535774	55.327475	9.398029	1.00258300	2.103006
03/09/2032	34.620805	1.64324221	0.39004589	209.848328	55.098781	9.359393	1.00230233	2.106459
03/17/2061	314.053401	1.64293998	0.39016765	210.223534	54.907969	9.344655	1.00191794	2.105878
03/25/2090	234.564460	1.64145049	0.38965907	210.681907	54.657753	9.314405	1.00184443	2.103015
04/03/2119	160.210641	1.64244789	0.38991109	211.020485	54.451876	9.298129	1.00203925	2.104932
04/10/2148	84.583891	1.64340985	0.39038177	211.385900	54.189488	9.264467	1.00185261	2.106781
04/18/2177	4.321502	1.64320741	0.39026057	211.696364	54.013652	9.250955	1.00192834	2.106392

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