Asteroid General Data

2021 BK

General information

Preliminary designation	2021 BK
Group	Apollo
Absolute magnitude	30.32
Approximate diameter (m)	2
Approximate mass (kg)	2.21·10⁴
Number of observations	32
Arc length (days)	1

Approaches

Date	Object	r, AU	r, km
01/18/2021 01:12:00 AM	Earth	0.000750	112 234

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	331.170390
a – orbit major semiaxis (astronomical units)	1.53359448
e – orbit eccentricity	0.45412164
ω – orbit ascending node-perihelion angle (degrees)	239.383925
Ω – longitude of orbit ascending node (degrees)	297.022712
i – orbit inclination to the ecliptic plane (degrees)	3.021959

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	50.181089	1.57501661	0.46121152	232.879328	300.653733	3.907387	0.84860080	1.976643
01/21/1858	296.365830	1.57496043	0.46107919	233.400319	300.237558	3.895365	0.84877895	1.976538
01/29/1887	173.213056	1.57987825	0.46244157	233.829364	299.575222	3.899522	0.84927688	1.985802
02/07/1916	36.186339	1.57927582	0.46293949	234.282751	299.216830	3.889542	0.84816668	1.984667
02/14/1945	257.748626	1.57991852	0.46292196	234.771341	298.829238	3.878817	0.84853954	1.985878
02/22/1974	120.029388	1.57960706	0.46292259	235.236159	298.474972	3.868703	0.84837126	1.985291
03/02/2003	343.320315	1.58037850	0.46367691	235.822877	298.024513	3.857834	0.84759348	1.986746
03/09/2032	289.021067	1.53364147	0.45396970	239.437244	296.979375	3.021453	0.83741471	1.899269
03/17/2061	35.639237	1.53197243	0.45338671	240.519393	296.107864	3.025067	0.83739648	1.896169
03/25/2090	144.006580	1.53235131	0.45375329	240.987368	295.715610	3.017702	0.83704186	1.896872
04/03/2119	263.751042	1.52994115	0.45307863	242.033690	294.981442	3.012803	0.83675751	1.892399
04/10/2148	25.148388	1.52917720	0.45292865	242.604315	294.488176	3.004911	0.83656903	1.890982
04/18/2177	150.770125	1.52865215	0.45301125	243.402559	293.880813	3.005505	0.83615553	1.890008

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