578 Happelia

Summary

Happelia (minor planet designation: 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]

578 Happelia
A three-dimensional model of 578 Happelia based on its light curve
Discovery
Discovered byM. F. Wolf
Discovery siteHeidelberg
Discovery date1 November 1905
Designations
(578) Happelia
1905 RZ
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc110.46 yr (40344 d)
Aphelion3.2821 AU (491.00 Gm)
Perihelion2.2168 AU (331.63 Gm)
2.7494 AU (411.30 Gm)
Eccentricity0.19374
4.56 yr (1665.2 d)
200.53°
0° 12m 58.284s / day
Inclination6.1525°
29.411°
261.400°
Physical characteristics
Mean radius
34.645±1.05 km
10.061 h (0.4192 d)
0.0769±0.005
9.4

References edit

  1. ^ "578 Happelia (1905 RZ)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Archived from the original on 18 September 2020. Retrieved 5 May 2016.
  2. ^ "(578) Happelia occultation 2017/02/24". www.asteroidoccultation.com. Archived from the original on 12 March 2017. Retrieved 12 March 2017.

External links edit

  • Lightcurve plot of 578 Happelia, Palmer Divide Observatory, B. D. Warner (2008)
  • Lightcurves 578 Happelia, tripod.com
  • Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
  • Dictionary of Minor Planet Names, Google books
  • Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
  • Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
  • 578 Happelia at AstDyS-2, Asteroids—Dynamic Site
    • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
  • 578 Happelia at the JPL Small-Body Database  
    • Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters