Asteroid General Data

2021 UP

General information

Preliminary designation	2021 UP
Group	Apollo
Absolute magnitude	25.64
Approximate diameter (m)	20
Approximate mass (kg)	1.42·10⁷
Number of observations	56
Arc length (days)	782

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	201.191014
a – orbit major semiaxis (astronomical units)	1.56311000
e – orbit eccentricity	0.40168600
ω – orbit ascending node-perihelion angle (degrees)	320.957124
Ω – longitude of orbit ascending node (degrees)	24.281141
i – orbit inclination to the ecliptic plane (degrees)	8.602942

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	256.875079	1.57750549	0.40731463	318.920200	25.875296	8.302650	0.93496443	1.981331
01/21/1858	131.610331	1.57710563	0.40726600	319.212504	25.691792	8.305328	0.93480413	1.980577
01/29/1887	5.254298	1.57725371	0.40724447	319.557958	25.503961	8.311052	0.93492585	1.980856
02/07/1916	240.096838	1.57741139	0.40720463	319.804884	25.335250	8.314252	0.93508217	1.981153
02/14/1945	111.428326	1.57619623	0.40622966	320.529381	24.896606	8.481398	0.93589857	1.978864
02/22/1974	349.751595	1.57645008	0.40615195	320.822497	24.724589	8.485180	0.93617180	1.979342
03/02/2003	227.817642	1.57613558	0.40616587	321.121670	24.542512	8.490265	0.93596311	1.978750
03/09/2032	129.768400	1.56319551	0.40139104	321.000112	24.259915	8.602970	0.93574284	1.954432
03/17/2061	75.055801	1.56338946	0.40132753	321.279196	24.095264	8.605809	0.93595823	1.954796
03/25/2090	187.015975	1.60710567	0.41402678	323.944814	23.847930	8.656996	0.94172088	2.037358
04/03/2119	274.007835	1.60600065	0.41345575	324.244222	23.606196	8.667127	0.94199045	2.035257
04/10/2148	2.425786	1.60680137	0.41380954	324.618545	23.405758	8.671899	0.94189163	2.036779
04/18/2177	91.725640	1.60631175	0.41375214	324.911963	23.146564	8.680343	0.94169683	2.035848

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