Asteroid General Data

2013 SD₂₁

General information

Preliminary designation	2013 SD₂₁
Group	Apollo
Absolute magnitude	25.35
Approximate diameter (m)	23
Approximate mass (kg)	2.12·10⁷
Number of observations	31
Arc length (days)	6

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	293.304365
a – orbit major semiaxis (astronomical units)	2.25419900
e – orbit eccentricity	0.55293100
ω – orbit ascending node-perihelion angle (degrees)	209.353433
Ω – longitude of orbit ascending node (degrees)	183.224843
i – orbit inclination to the ecliptic plane (degrees)	7.827273

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	207.013291	2.26647587	0.55022555	205.395412	185.703821	7.969118	1.01940294	3.412143
01/21/1858	31.076108	2.26461821	0.54998506	205.969599	185.282225	7.948022	1.01911203	3.407949
01/29/1887	219.679235	2.26113165	0.55132709	206.599523	184.961569	7.940443	1.01450852	3.400082
02/07/1916	59.347153	2.25582315	0.55230539	207.200007	184.629431	7.923953	1.00991986	3.388115
02/14/1945	261.362598	2.25479485	0.55324461	207.654317	184.326319	7.912307	1.00734175	3.385799
02/22/1974	102.569303	2.25625969	0.55186870	208.309246	183.858227	7.877425	1.01110059	3.389099
03/02/2003	308.065208	2.25556165	0.55239281	208.807184	183.554889	7.859968	1.00960561	3.387526
03/09/2032	155.791765	2.25089897	0.55535520	209.558649	183.171848	7.832918	1.00085051	3.377028
03/17/2061	5.875051	2.25099025	0.55578842	210.050522	182.846361	7.816273	0.99991594	3.377233
03/25/2090	218.038028	2.25245388	0.55460342	210.653080	182.424642	7.766192	1.00323525	3.380527
04/03/2119	69.768519	2.25315599	0.55462894	211.328467	181.909421	7.730926	1.00349048	3.382108
04/10/2148	278.204057	2.25245073	0.55619057	211.910504	181.532991	7.713615	0.99965887	3.380520
04/18/2177	129.798532	2.25139351	0.55539911	212.416160	181.148201	7.690882	1.00097155	3.378141

Detailed table...

3D animation...

Calculation on the date...

Return to search