Asteroid General Data

1991 OA (6491)

General information

Preliminary designation	1991 OA
Number	6491
Group	Amor
Absolute magnitude	18.72
Approximate diameter (m)	480
Approximate mass (kg)	2.01·10¹¹
Number of observations	199
Arc length (days)	11898

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	314.539245
a – orbit major semiaxis (astronomical units)	2.50036300
e – orbit eccentricity	0.59173900
ω – orbit ascending node-perihelion angle (degrees)	326.350752
Ω – longitude of orbit ascending node (degrees)	299.973553
i – orbit inclination to the ecliptic plane (degrees)	6.156719

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	314.742414	2.49935613	0.58159553	296.899663	323.276655	4.691105	1.04574178	3.951326
01/21/1858	46.837771	2.53131979	0.56987459	303.071493	318.495311	4.854084	1.08878497	4.027366
01/29/1887	94.963644	2.55712426	0.55519128	304.930460	317.038212	4.891733	1.13743117	4.089106
02/07/1916	128.554912	2.55814793	0.55365115	304.967344	316.778481	4.892601	1.14182639	4.091562
02/14/1945	168.922844	2.54340043	0.56138290	305.791614	315.775657	4.934873	1.11557893	4.056231
02/22/1974	241.316003	2.52046273	0.57576767	310.247081	312.110836	5.128964	1.06926177	4.001484
03/02/2003	338.036855	2.50354128	0.58910183	320.562224	304.136518	5.731777	1.02870054	3.961255
03/09/2032	93.428518	2.49915427	0.59246794	326.430601	299.917198	6.162582	1.01848549	3.950847
03/17/2061	210.818409	2.50098491	0.59720222	333.431473	295.093385	6.793097	1.00739116	3.955189
03/25/2090	342.044034	2.48435590	0.60547365	337.770644	292.482633	7.240961	0.98014387	3.915807
04/03/2119	147.388949	2.46073429	0.61958091	340.497301	290.543478	7.604074	0.93611029	3.860092
04/10/2148	351.514798	2.44601407	0.62799683	341.037475	290.066270	7.719652	0.90992498	3.825507
04/18/2177	204.094749	2.44569081	0.62669621	341.071650	289.911360	7.720274	0.91298564	3.824749

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