Asteroid General Data

2021 RO₉

General information

Preliminary designation	2021 RO₉
Group	Amor
Absolute magnitude	18.93
Approximate diameter (m)	430
Approximate mass (kg)	1.51·10¹¹
Number of observations	147
Arc length (days)	177

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	7.384601
a – orbit major semiaxis (astronomical units)	2.77307300
e – orbit eccentricity	0.57992700
ω – orbit ascending node-perihelion angle (degrees)	160.907445
Ω – longitude of orbit ascending node (degrees)	261.105005
i – orbit inclination to the ecliptic plane (degrees)	16.213590

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	58.243310	2.76400948	0.59484634	152.350243	266.971914	14.384810	1.11984857	4.595258
01/21/1858	170.836024	2.77214976	0.59157864	153.026614	266.349686	14.483785	1.13220517	4.615573
01/29/1887	270.197935	2.78064214	0.58350241	154.837778	265.091922	14.854091	1.15813074	4.636799
02/07/1916	12.481363	2.76724655	0.58788599	156.455437	264.006994	15.279130	1.14042106	4.603333
02/14/1945	124.162928	2.77066971	0.58590824	157.158064	263.430471	15.381557	1.14731148	4.611877
02/22/1974	221.034987	2.78048852	0.57766964	158.801631	262.393461	15.725747	1.17428473	4.636415
03/02/2003	323.946819	2.76908703	0.58207988	160.381973	261.471278	16.114725	1.15725718	4.607926
03/09/2032	75.215648	2.76908754	0.58123143	160.903860	260.970574	16.220420	1.15960684	4.607928
03/17/2061	169.672849	2.78347189	0.57194649	162.486271	260.097766	16.485787	1.19147492	4.643879
03/25/2090	275.141093	2.76191661	0.58030526	164.094690	259.145051	16.942113	1.15916188	4.590040
04/03/2119	26.538741	2.76790992	0.57659651	164.398697	258.863197	16.944900	1.17194271	4.604988
04/10/2148	117.932946	2.78525548	0.56714664	166.227683	257.883493	17.181492	1.20560719	4.648343
04/18/2177	228.703045	2.75786431	0.57630983	167.494840	257.260296	17.572708	1.16847999	4.579942

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