812 Adele

812 Adele
Modelled shape of Adele from its lightcurve
Discovery [1]
Discovered byS. Belyavskyj
Discovery siteSimeiz Obs.
Discovery date8 September 1915
Designations
(812) Adele
Named after
Adele, character in the operetta Die Fledermaus [2]
A915 RU · A902 UE
1915 XV
Orbital characteristics [3]
Epoch 31 May 2020 (JD 2459000.5)
Uncertainty parameter 0
Observation arc104.40 yr (38,132 d)
Aphelion3.0981 AU
Perihelion2.2220 AU
2.6601 AU
Eccentricity0.1647
4.34 yr (1,585 d)
46.769°
0° 13m 37.92s / day
Inclination13.298°
7.2582°
353.10°
Physical characteristics
5.8587±0.0002 h[9]
  • (301.0°, 44.0°) (λ1/β1)[5]
  • (154.0°, 69.0°) (λ2/β2)[5]
  • 0.257±0.019[8]
  • 0.291±0.041[7]
S (family-based)[10][11]

812 Adele (prov. designation: A915 RU or 1915 XV) is an elongated Eunomia asteroid from the central regions of the asteroid belt. It was discovered on 8 September 1915, by Russian astronomer Sergey Belyavsky at the Simeiz Observatory on the Crimean peninsula.[1] The presumed S-type asteroid has a rotation period of 5.9 hours and measures approximately 13 kilometers (8 miles) in diameter. It was likely named after the character "Adele" in the opera Die Fledermaus by Johann Strauss.[2]

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