Asteroid General Data

2021 UM

General information

Preliminary designation	2021 UM
Group	Amor
Absolute magnitude	24.33
Approximate diameter (m)	36
Approximate mass (kg)	8.67·10⁷
Number of observations	26
Arc length (days)	11

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	50.507262
a – orbit major semiaxis (astronomical units)	2.61905700
e – orbit eccentricity	0.60976900
ω – orbit ascending node-perihelion angle (degrees)	206.817254
Ω – longitude of orbit ascending node (degrees)	211.375652
i – orbit inclination to the ecliptic plane (degrees)	18.038992

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	159.022351	2.61423838	0.60812832	200.027017	216.008365	19.588262	1.02444600	4.226865
01/21/1858	103.884329	2.62086720	0.60321220	200.620118	215.359771	19.326120	1.03992812	4.242952
01/29/1887	56.911914	2.60554959	0.61241836	201.480765	214.942397	19.304367	1.00986318	4.205810
02/07/1916	1.873142	2.62111831	0.60563356	202.533228	214.134756	18.927681	1.03368109	4.243562
02/14/1945	312.501189	2.60585094	0.61459293	203.271236	213.758819	18.915446	1.00431338	4.206539
02/22/1974	257.998392	2.61970071	0.60761970	204.584866	212.821830	18.498337	1.02791896	4.240120
03/02/2003	208.183544	2.60533059	0.61637078	205.196463	212.478789	18.497146	0.99948094	4.205280
03/09/2032	155.946594	2.61872465	0.60960140	206.761353	211.374608	18.035688	1.02234644	4.237750
03/17/2061	105.691955	2.60552073	0.61789616	207.200892	211.072878	18.048288	0.99557948	4.205740
03/25/2090	56.386598	2.61710211	0.61209308	209.046641	209.773123	17.547245	1.01519200	4.233812
04/03/2119	5.864427	2.60665459	0.61894355	209.334184	209.506078	17.557155	0.99328255	4.208486
04/10/2148	319.512460	2.61571322	0.61507784	211.467687	208.012642	17.030616	1.00684598	4.230443
04/18/2177	267.950845	2.60895661	0.62016064	211.653583	207.755531	17.031570	0.99098442	4.214062

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