578 Happelia

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578 Happelia
578Happelia (Lightcurve Inversion).png
A three-dimensional model of 578 Happelia based on its light curve.
Discovery
Discovered by M. F. Wolf
Discovery site Heidelberg
Discovery date 1 November 1905
Designations
1905 RZ
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 110.46 yr (40344 d)
Aphelion 3.2821 AU (491.00 Gm)
Perihelion 2.2168 AU (331.63 Gm)
2.7494 AU (411.30 Gm)
Eccentricity 0.19374
4.56 yr (1665.2 d)
200.53°
0° 12m 58.284s / day
Inclination 6.1525°
29.411°
261.400°
Earth MOID 1.21072 AU (181.121 Gm)
Jupiter MOID 1.93906 AU (290.079 Gm)
Jupiter Tisserand parameter 3.311
Physical characteristics
Mean radius
34.645±1.05 km
10.061 h (0.4192 d)
0.0769±0.005
9.4

578 Happelia is a minor planet orbiting the Sun. On 24 February 2017 a possible small 3-kilometer moon was found orbiting the asteroid, based on occultation observations.[2]

References[edit]

  1. ^ "578 Happelia (1905 RZ)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 5 May 2016. 
  2. ^ "(578) Happelia occultation 2017/02/24". www.asteroidoccultation.com. Retrieved 12 March 2017. 

External links[edit]