Asteroid General Data

2021 RW₉₉

General information

Preliminary designation	2021 RW₉₉
Group	Apollo
Absolute magnitude	22.43
Approximate diameter (m)	87
Approximate mass (kg)	1.20·10⁹
Number of observations	75
Arc length (days)	263

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	146.876324
a – orbit major semiaxis (astronomical units)	1.23329800
e – orbit eccentricity	0.29936000
ω – orbit ascending node-perihelion angle (degrees)	118.363032
Ω – longitude of orbit ascending node (degrees)	5.679026
i – orbit inclination to the ecliptic plane (degrees)	5.853059

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	282.667238	1.22726896	0.29759922	115.581894	7.663043	5.947072	0.86203467	1.359597
01/21/1858	47.864028	1.22651279	0.29722474	115.798659	7.384769	5.945566	0.86196285	1.358341
01/29/1887	159.746512	1.23135671	0.29851030	116.686372	7.032199	5.895266	0.86378405	1.366396
02/07/1916	244.518381	1.23146634	0.29855984	116.951112	6.736902	5.890661	0.86379994	1.366578
02/14/1945	313.728605	1.23385702	0.29953337	117.606382	6.481018	5.866922	0.86427567	1.370559
02/22/1974	14.688212	1.23459257	0.29992987	117.978142	6.189816	5.859409	0.86430138	1.371785
03/02/2003	78.480108	1.23378397	0.29951026	118.201517	5.933085	5.855492	0.86425301	1.370438
03/09/2032	146.216275	1.23331975	0.29935735	118.386090	5.655200	5.852252	0.86411641	1.369664
03/17/2061	203.382689	1.23445804	0.29989653	118.843698	5.375205	5.835360	0.86424835	1.371561
03/25/2090	259.885440	1.23470612	0.30002728	119.263919	5.085441	5.825138	0.86426060	1.371974
04/03/2119	325.354218	1.23297408	0.29950778	119.378972	4.826459	5.807115	0.86368875	1.369089
04/10/2148	31.400869	1.23356169	0.29962380	119.671847	4.539105	5.800505	0.86395725	1.370067
04/18/2177	89.859972	1.23441203	0.29992037	120.043044	4.309236	5.792403	0.86418672	1.371484

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