Asteroid General Data

2021 SE

General information

Preliminary designation	2021 SE
Group	Apollo
Absolute magnitude	25.91
Approximate diameter (m)	17
Approximate mass (kg)	9.77·10⁶
Number of observations	44
Arc length (days)	1

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	301.661726
a – orbit major semiaxis (astronomical units)	1.04684700
e – orbit eccentricity	0.06395400
ω – orbit ascending node-perihelion angle (degrees)	293.269276
Ω – longitude of orbit ascending node (degrees)	352.596116
i – orbit inclination to the ecliptic plane (degrees)	24.339517

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	88.470311	1.04504055	0.06519697	291.099548	353.427752	24.342424	0.97690707	1.068317
01/21/1858	138.685242	1.04596736	0.06547244	291.659522	353.301815	24.335488	0.97748533	1.069739
01/29/1887	184.975076	1.04718609	0.06569787	292.788358	353.179900	24.330577	0.97838819	1.071609
02/07/1916	207.709914	1.04777649	0.06587107	293.329371	353.068463	24.326131	0.97875833	1.072516
02/14/1945	226.661355	1.04775187	0.06602660	293.508006	352.956626	24.323356	0.97857237	1.072478
02/22/1974	260.960098	1.04636223	0.06469786	292.373359	352.830077	24.336054	0.97866483	1.070345
03/02/2003	306.467853	1.04605240	0.06486002	292.384930	352.710259	24.332105	0.97820543	1.069869
03/09/2032	342.084315	1.04689307	0.06396236	293.267223	352.581661	24.337718	0.97993132	1.071159
03/17/2061	27.183725	1.04580974	0.06359601	292.570176	352.456217	24.340955	0.97930042	1.069497
03/25/2090	76.395166	1.04525926	0.06313701	291.999234	352.336094	24.344222	0.97926471	1.068653
04/03/2119	133.025413	1.04506831	0.06315311	291.777761	352.217356	24.341960	0.97906899	1.068360
04/10/2148	189.429494	1.04515220	0.06339135	292.011968	352.097768	24.337840	0.97889860	1.068489
04/18/2177	238.905063	1.04599814	0.06365958	292.461213	351.971711	24.332169	0.97941034	1.069786

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