Asteroid General Data

2011 UD₂₅₆

General information

Preliminary designation	2011 UD₂₅₆
Group	Apollo
Absolute magnitude	19.90
Approximate diameter (m)	280
Approximate mass (kg)	3.94·10¹⁰
Number of observations	51
Arc length (days)	2543

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	77.737616
a – orbit major semiaxis (astronomical units)	1.45808200
e – orbit eccentricity	0.59890800
ω – orbit ascending node-perihelion angle (degrees)	323.053748
Ω – longitude of orbit ascending node (degrees)	216.317081
i – orbit inclination to the ecliptic plane (degrees)	47.060028

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	336.693298	1.45804511	0.60767911	322.427309	217.191010	46.606541	0.57202156	1.760585
01/21/1858	151.184358	1.45789326	0.60640373	322.525748	217.050999	46.685960	0.57382134	1.760310
01/29/1887	325.322129	1.45795951	0.60511451	322.614662	216.927734	46.745712	0.57572705	1.760430
02/07/1916	139.877021	1.45809824	0.60397417	322.700972	216.798979	46.807723	0.57744456	1.760681
02/14/1945	314.024175	1.45795273	0.60260781	322.797754	216.669703	46.879941	0.57937903	1.760418
02/22/1974	128.551469	1.45803242	0.60130351	322.884970	216.548605	46.935459	0.58131240	1.760562
03/02/2003	302.934433	1.45787360	0.59999144	322.982039	216.415309	47.013926	0.58316192	1.760275
03/09/2032	117.313216	1.45800620	0.59871620	323.077270	216.300608	47.067325	0.58507428	1.760515
03/17/2061	291.717153	1.45794498	0.59725155	323.172985	216.168755	47.143277	0.58718509	1.760404
03/25/2090	105.879680	1.45798007	0.59625437	323.271286	216.046493	47.205797	0.58865308	1.760467
04/03/2119	280.307928	1.45814282	0.59469738	323.362117	215.918782	47.274327	0.59098911	1.760762
04/10/2148	94.494548	1.45795792	0.59371620	323.463268	215.794835	47.340491	0.59234468	1.760427
04/18/2177	269.098925	1.45810080	0.59234780	323.559487	215.662922	47.411413	0.59439799	1.760686

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