Asteroid General Data

2021 RU₉

General information

Preliminary designation	2021 RU₉
Group	Apollo
Absolute magnitude	20.53
Approximate diameter (m)	210
Approximate mass (kg)	1.65·10¹⁰
Number of observations	52
Arc length (days)	5820

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	47.673680
a – orbit major semiaxis (astronomical units)	1.74564800
e – orbit eccentricity	0.44682200
ω – orbit ascending node-perihelion angle (degrees)	59.845583
Ω – longitude of orbit ascending node (degrees)	317.731415
i – orbit inclination to the ecliptic plane (degrees)	22.278385

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	100.090591	1.74540397	0.44411944	57.769343	319.594137	22.506182	0.97023614	2.305922
01/21/1858	310.654919	1.74562749	0.44454093	58.062236	319.331262	22.472434	0.96962462	2.306365
01/29/1887	160.965901	1.74535865	0.44486940	58.340420	319.079837	22.438966	0.96890199	2.305832
02/07/1916	12.431067	1.74492722	0.44528763	58.673909	318.781987	22.406742	0.96793271	2.304977
02/14/1945	224.199898	1.74499511	0.44593984	58.973446	318.516033	22.371160	0.96683227	2.305111
02/22/1974	75.961285	1.74498922	0.44587268	59.287710	318.227696	22.339587	0.96694621	2.305100
03/02/2003	288.282063	1.74494959	0.44628153	59.572895	317.964628	22.308604	0.96621082	2.305021
03/09/2032	140.085261	1.74505751	0.44689286	59.930979	317.659773	22.269103	0.96520377	2.305235
03/17/2061	351.463292	1.74502432	0.44708389	60.239612	317.396240	22.237788	0.96485206	2.305169
03/25/2090	203.015612	1.74504189	0.44783057	60.565701	317.104025	22.197618	0.96355879	2.305204
04/03/2119	54.314627	1.74511625	0.44833967	60.868992	316.828862	22.169813	0.96271141	2.305352
04/10/2148	266.027667	1.74494775	0.44853101	61.234816	316.517889	22.129134	0.96228457	2.305018
04/18/2177	118.524190	1.74497405	0.44897989	61.493261	316.260467	22.103125	0.96151579	2.305070

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