Asteroid General Data

2015 XW₂₆₁

General information

Preliminary designation	2015 XW₂₆₁
Group	Apollo
Absolute magnitude	21.39
Approximate diameter (m)	140
Approximate mass (kg)	5.03·10⁹
Number of observations	230
Arc length (days)	5096

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	193.719542
a – orbit major semiaxis (astronomical units)	1.24867800
e – orbit eccentricity	0.46695100
ω – orbit ascending node-perihelion angle (degrees)	289.457482
Ω – longitude of orbit ascending node (degrees)	269.885756
i – orbit inclination to the ecliptic plane (degrees)	29.674760

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	300.853910	1.24837538	0.46825792	288.573574	271.107295	29.596044	0.66381372	1.394821
01/21/1858	230.669691	1.24857091	0.46809732	288.714324	270.913523	29.603698	0.66411822	1.395148
01/29/1887	160.515775	1.24842499	0.46791738	288.835887	270.747982	29.619248	0.66426524	1.394904
02/07/1916	89.031219	1.24861793	0.46781623	288.939781	270.573607	29.624076	0.66449420	1.395227
02/14/1945	19.126554	1.24831386	0.46747654	289.078209	270.390539	29.644668	0.66475642	1.394718
02/22/1974	308.307006	1.24851657	0.46728614	289.202120	270.221467	29.650698	0.66510208	1.395057
03/02/2003	238.373289	1.24844093	0.46705567	289.345733	270.031618	29.669933	0.66534952	1.394931
03/09/2032	166.615606	1.24839291	0.46690329	289.480691	269.860970	29.676981	0.66551415	1.394850
03/17/2061	97.250967	1.24832282	0.46651903	289.619327	269.671926	29.697361	0.66595647	1.394733
03/25/2090	26.091540	1.24839395	0.46649751	289.755343	269.500077	29.704183	0.66602128	1.394852
04/03/2119	316.259219	1.24840547	0.46618524	289.885194	269.312655	29.722607	0.66641726	1.394871
04/10/2148	244.624629	1.24841017	0.46611484	289.999586	269.143242	29.729122	0.66650766	1.394879
04/18/2177	175.319958	1.24850861	0.46583435	290.123952	268.967850	29.742763	0.66691041	1.395044

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