951 Gaspra

Tags: Planet.

951 Gaspra /ˈɡæsprə/ is an S-type asteroid that orbits very close to the inner edge of the asteroid belt. Gaspra was the first asteroid ever to be closely approached when it was visited by the Galileo spacecraft which flew by on its way to Jupiter on 29 October 1991.

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apoapsis (km)

3.88057e+11

average speed (km/s)

71568.0

density (μ3)

2700.0

mean radius (km)

6100.0

orbital period (μ)

1.0365e+08

periapsis (km)

2.73016e+11

temperature (K)

181.0, 281.0

absolute magnitude

11.46

albedo

0.22

discovery date

1916-07-30

discoverer

Grigory Neujmin

epoch

6 March 2006 (JD 2453800.5)

escape velocity (kmh)

21.6

former name

SIGMA 45; A913 YA;

rotation period (s)

25315.2