Asteroid General Data

2021 UN

General information

Preliminary designation	2021 UN
Group	Apollo
Absolute magnitude	28.79
Approximate diameter (m)	5
Approximate mass (kg)	1.83·10⁵
Number of observations	13
Arc length (days)	1

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	205.888375
a – orbit major semiaxis (astronomical units)	2.16779800
e – orbit eccentricity	0.59517900
ω – orbit ascending node-perihelion angle (degrees)	311.560075
Ω – longitude of orbit ascending node (degrees)	20.839218
i – orbit inclination to the ecliptic plane (degrees)	4.798187

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	125.405373	2.13396613	0.58892801	305.146495	25.318413	4.577113	0.87721369	3.117324
01/21/1858	237.443374	2.13314475	0.58884506	305.482285	24.956240	4.583230	0.87705299	3.115524
01/29/1887	350.366973	2.13563284	0.58951282	307.023244	23.940424	4.616857	0.87664991	3.120976
02/07/1916	98.085545	2.13512971	0.58947116	307.313284	23.600019	4.622534	0.87653232	3.119874
02/14/1945	207.562931	2.13683290	0.59038993	308.728434	22.583259	4.656111	0.87526827	3.123607
02/22/1974	301.679336	2.14258462	0.59090531	309.246387	22.222658	4.666124	0.87651999	3.136228
03/02/2003	34.388833	2.14100774	0.59224693	310.435536	21.339663	4.696410	0.87300248	3.132766
03/09/2032	103.934281	2.16744126	0.59535492	311.583668	20.805724	4.799676	0.87704443	3.190962
03/17/2061	137.836853	2.16701658	0.59419111	312.648406	20.063250	4.824745	0.87939460	3.190024
03/25/2090	169.014123	2.20343185	0.60099007	314.185855	19.238707	4.417999	0.87919118	3.270770
04/03/2119	122.985777	2.20042841	0.60284527	314.955705	18.604078	4.436558	0.87391056	3.264085
04/10/2148	78.596113	2.20079097	0.60225557	316.025059	17.867908	4.466424	0.87535234	3.264892
04/18/2177	33.653212	2.21003669	0.60394158	316.686019	17.311118	4.366744	0.87530363	3.285488

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