Asteroid General Data

2025 SN₂₁

General information

Preliminary designation	2025 SN₂₁
Group	Apollo
Absolute magnitude	26.72
Approximate diameter (m)	12
Approximate mass (kg)	3.19·10⁶
Number of observations	37
Arc length (days)	5

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	166.737258
a – orbit major semiaxis (astronomical units)	1.54033600
e – orbit eccentricity	0.35788400
ω – orbit ascending node-perihelion angle (degrees)	208.622060
Ω – longitude of orbit ascending node (degrees)	190.161443
i – orbit inclination to the ecliptic plane (degrees)	11.194507

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	43.094849	1.54087395	0.35724809	206.171121	191.473535	11.281991	0.99039967	1.912719
01/21/1858	104.462363	1.54131032	0.35732755	206.418563	191.288792	11.279023	0.99055768	1.913532
01/29/1887	169.138303	1.53943697	0.35657680	206.786121	191.120351	11.282926	0.99050946	1.910044
02/07/1916	234.777059	1.54092837	0.35756155	207.265390	190.889656	11.242675	0.98995163	1.912821
02/14/1945	298.102805	1.53985738	0.35721770	207.537874	190.730725	11.243553	0.98979306	1.910827
02/22/1974	359.172713	1.54199911	0.35799711	207.847518	190.509062	11.219250	0.98996789	1.914815
03/02/2003	58.295892	1.54185793	0.35796107	208.184245	190.331279	11.216603	0.98993281	1.914552
03/09/2032	117.725420	1.54032976	0.35787090	208.704211	190.130846	11.192484	0.98909056	1.911706
03/17/2061	180.835659	1.54082580	0.35804902	208.968429	189.965106	11.188150	0.98913463	1.912630
03/25/2090	246.154651	1.54016878	0.35779164	209.279703	189.786137	11.188132	0.98910926	1.911407
04/03/2119	303.736158	1.54104569	0.35844829	209.601150	189.573641	11.170012	0.98866051	1.913039
04/10/2148	2.844768	1.54164461	0.35891703	209.844932	189.408735	11.166338	0.98832211	1.914155
04/18/2177	65.789310	1.54014249	0.35837958	210.347055	189.194935	11.144222	0.98818687	1.911358

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