Asteroid General Data

2021 TD₄

General information

Preliminary designation	2021 TD₄
Group	Amor
Absolute magnitude	23.44
Approximate diameter (m)	54
Approximate mass (kg)	2.96·10⁸
Number of observations	14
Arc length (days)	18

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	254.829065
a – orbit major semiaxis (astronomical units)	1.17658000
e – orbit eccentricity	0.08043800
ω – orbit ascending node-perihelion angle (degrees)	248.168210
Ω – longitude of orbit ascending node (degrees)	190.936771
i – orbit inclination to the ecliptic plane (degrees)	37.410411

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	293.392120	1.17658555	0.07998833	247.941628	191.476983	37.401881	1.08247244	1.276250
01/21/1858	200.000544	1.17652278	0.08003037	247.958735	191.397408	37.403863	1.08236523	1.276148
01/29/1887	106.598620	1.17651460	0.08001367	248.023259	191.319848	37.406277	1.08237735	1.276135
02/07/1916	13.065554	1.17652758	0.08013730	248.035069	191.238477	37.407433	1.08224384	1.276156
02/14/1945	279.597106	1.17653364	0.08017910	248.038309	191.159697	37.408819	1.08220023	1.276166
02/22/1974	186.188596	1.17650542	0.08030305	248.163027	191.080158	37.408595	1.08202845	1.276120
03/02/2003	92.776950	1.17660882	0.08037684	248.190821	191.001136	37.409993	1.08203672	1.276288
03/09/2032	359.362314	1.17654564	0.08045178	248.259164	190.923880	37.410019	1.08189045	1.276185
03/17/2061	265.969526	1.17657515	0.08054101	248.242883	190.844783	37.411742	1.08181260	1.276233
03/25/2090	172.423733	1.17655217	0.08060770	248.301260	190.769668	37.413077	1.08171300	1.276196
04/03/2119	79.044544	1.17654370	0.08068421	248.319972	190.688463	37.415468	1.08161521	1.276182
04/10/2148	345.621669	1.17654035	0.08073684	248.357181	190.611585	37.418218	1.08155021	1.276177
04/18/2177	252.129402	1.17653865	0.08083272	248.357494	190.530834	37.419884	1.08143584	1.276174

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