984 Gretia

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984 Gretia
984Gretia (Lightcurve Inversion).png
A three-dimensional model of 984 Gretia based on its light curve.
Discovery[1]
Discovered by K. Reinmuth
Discovery site Heidelberg
Discovery date 27 August 1922
Designations
1922 MH
Main belt Main belt
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 93.65 yr (34205 days)
Aphelion 3.3569213 AU (502.18828 Gm)
Perihelion 2.2496729 AU (336.54628 Gm)
2.8032971 AU (419.36728 Gm)
Eccentricity 0.1974904
4.69 yr (1714.4 d)
341.21603°
0° 12m 35.967s / day
Inclination 9.092957°
314.21811°
55.548376°
Earth MOID 1.26169 AU (188.746 Gm)
Jupiter MOID 2.17523 AU (325.410 Gm)
Jupiter Tisserand parameter 3.277
Physical characteristics
Mean radius
15.955±1.55 km
5.778 h (0.2408 d)
5.781 h[1]
0.4239±0.095[1]
Sr[1]
9.03[1]

984 Gretia is a main belt asteroid orbiting the Sun. It orbits about twice as far out as Mars and takes 4.7 years to orbit the Sun.[1]

References[edit]

  1. ^ a b c d e f g "984 Gretia". JPL Small-Body Database. Jet Propulsion Laboratory. SPK-ID: 984. Retrieved 2 May 2016. 

External links[edit]