Asteroid General Data

2005 GP₂₁ (390929)

General information

Preliminary designation	2005 GP₂₁
Number	390929
Group	Apollo
Absolute magnitude	20.45
Approximate diameter (m)	220
Approximate mass (kg)	1.84·10¹⁰
Number of observations	298
Arc length (days)	7675

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	296.758257
a – orbit major semiaxis (astronomical units)	1.30830900
e – orbit eccentricity	0.22458200
ω – orbit ascending node-perihelion angle (degrees)	1.405528
Ω – longitude of orbit ascending node (degrees)	9.978711
i – orbit inclination to the ecliptic plane (degrees)	18.801866

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	349.445105	1.31240130	0.22661968	0.192135	10.743877	18.806270	1.01498533	1.503490
01/21/1858	99.698152	1.31191105	0.22652745	0.334130	10.637473	18.806302	1.01472718	1.502648
01/29/1887	215.257643	1.31113959	0.22608704	0.549495	10.521503	18.808010	1.01470791	1.501323
02/07/1916	339.668548	1.30980359	0.22547569	0.767973	10.391804	18.809669	1.01447472	1.499028
02/14/1945	112.823060	1.30901441	0.22487810	0.957039	10.271041	18.810674	1.01464574	1.497674
02/22/1974	251.272475	1.30837117	0.22467560	1.167317	10.160109	18.807583	1.01441209	1.496570
03/02/2003	32.515633	1.30822499	0.22449614	1.285708	10.062756	18.805033	1.01453353	1.496319
03/09/2032	174.013873	1.30825041	0.22461145	1.465434	9.960575	18.800645	1.01440239	1.496363
03/17/2061	314.879459	1.30852617	0.22472602	1.592056	9.861230	18.794986	1.01446629	1.496836
03/25/2090	92.004533	1.30933135	0.22515355	1.795437	9.749381	18.788643	1.01453075	1.498218
04/03/2119	221.928039	1.31029717	0.22580682	1.989781	9.623753	18.780338	1.01442313	1.499876
04/10/2148	342.420640	1.31142799	0.22664217	2.209127	9.496337	18.773679	1.01420310	1.501818
04/18/2177	95.523927	1.31214855	0.22702694	2.349358	9.384436	18.766345	1.01425548	1.503056

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