Asteroid General Data

2021 SY₂

General information

Preliminary designation	2021 SY₂
Group	Amor
Absolute magnitude	26.13
Approximate diameter (m)	16
Approximate mass (kg)	7.21·10⁶
Number of observations	30
Arc length (days)	17

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	261.974345
a – orbit major semiaxis (astronomical units)	1.49527600
e – orbit eccentricity	0.31757000
ω – orbit ascending node-perihelion angle (degrees)	342.068005
Ω – longitude of orbit ascending node (degrees)	15.536750
i – orbit inclination to the ecliptic plane (degrees)	4.832044

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	300.383494	1.49520574	0.31760754	338.330380	17.755673	4.698608	1.02031712	1.828319
01/21/1858	255.068393	1.49538808	0.31769803	338.614674	17.569547	4.694307	1.02030623	1.828654
01/29/1887	199.573596	1.49909238	0.31923270	339.253191	17.280637	4.711808	1.02053307	1.835453
02/07/1916	123.011279	1.50101603	0.32005612	339.575830	17.076162	4.708737	1.02060667	1.838987
02/14/1945	47.199675	1.49919607	0.31959483	340.015379	16.801405	4.710453	1.02006076	1.835643
02/22/1974	350.763469	1.49506944	0.31750594	341.158984	16.066305	4.797269	1.02037602	1.828069
03/02/2003	307.244731	1.49483520	0.31748036	341.409592	15.878117	4.794356	1.02025438	1.827640
03/09/2032	259.992454	1.49529352	0.31744318	342.119940	15.518342	4.830679	1.02062279	1.828480
03/17/2061	218.145951	1.49446461	0.31707916	342.412769	15.319761	4.830089	1.02060103	1.826960
03/25/2090	174.187120	1.49410670	0.31692595	343.185619	14.928510	4.866413	1.02058551	1.826304
04/03/2119	133.264194	1.49557401	0.31746661	343.495793	14.740511	4.863105	1.02077920	1.828995
04/10/2148	93.963167	1.49325729	0.31664409	344.049337	14.370331	4.882828	1.02042619	1.824747
04/18/2177	55.889225	1.49319290	0.31656376	344.438297	14.140474	4.883687	1.02050214	1.824629

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