Asteroid General Data

1997 WB₂₁ (380128)

General information

Preliminary designation	1997 WB₂₁
Number	380128
Group	Apollo
Absolute magnitude	20.27
Approximate diameter (m)	230
Approximate mass (kg)	2.37·10¹⁰
Number of observations	417
Arc length (days)	10015

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	145.549116
a – orbit major semiaxis (astronomical units)	1.45970500
e – orbit eccentricity	0.31707900
ω – orbit ascending node-perihelion angle (degrees)	81.983742
Ω – longitude of orbit ascending node (degrees)	280.941346
i – orbit inclination to the ecliptic plane (degrees)	3.390316

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	141.342079	1.46072651	0.31731038	78.263614	283.670057	3.401500	0.99722282	1.765444
01/21/1858	301.105710	1.46047368	0.31712108	78.859667	283.235116	3.401996	0.99732668	1.764986
01/29/1887	101.787084	1.46057789	0.31740188	79.392955	282.833194	3.399848	0.99698772	1.765175
02/07/1916	261.629723	1.46069292	0.31730821	79.935607	282.443746	3.397806	0.99720307	1.765383
02/14/1945	61.981215	1.46043553	0.31735892	80.424193	282.070972	3.394868	0.99695329	1.764917
02/22/1974	222.645794	1.46047136	0.31731536	81.020657	281.645031	3.392488	0.99704136	1.764982
03/02/2003	22.675527	1.46044910	0.31734045	81.580705	281.229930	3.392657	0.99698953	1.764941
03/09/2032	182.329517	1.46062461	0.31740836	82.167397	280.815810	3.391131	0.99701015	1.765259
03/17/2061	342.186877	1.46029587	0.31717070	82.687023	280.432054	3.387959	0.99713281	1.764663
03/25/2090	143.545065	1.46046277	0.31748900	83.301045	279.997146	3.386591	0.99678191	1.764966
04/03/2119	303.454940	1.46072496	0.31750120	83.837021	279.603207	3.385105	0.99694304	1.765441
04/10/2148	102.989019	1.46021447	0.31767397	84.478862	279.139483	3.386654	0.99634235	1.764516
04/18/2177	263.735344	1.45960449	0.31721103	84.913800	278.807965	3.385315	0.99660185	1.763410

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