215 Oenone

215 Oenone
Orbital diagram
Discovery
Discovered byViktor Knorre
Discovery date7 April 1880
Designations
(215) Oenone
Pronunciation/iːˈnoʊniː/[1]
Named after
Oenōnē
A880 GA
Main belt
Orbital characteristics[2]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc110.31 yr (40,289 d)
Aphelion2.87 AU (428.78 Gm)
Perihelion2.67 AU (398.77 Gm)
2.77 AU (413.78 Gm)
Eccentricity0.036257
4.60 yr (1,680.2 d)
17.91 km/s
90.9597°
0° 12m 51.343s / day
Inclination1.68583°
25.0036°
315.903°
Physical characteristics
Dimensions35.51±0.9 km
27.937 h (1.1640 d)
0.2044±0.011
S
9.4

215 Oenone is a typical main belt asteroid. It was discovered by the Russian astronomer Viktor Knorre on April 7, 1880, in Germany, and was the second of his four asteroid discoveries. The asteroid is named after Oenone, a nymph in Greek mythology.[3]

This body is orbiting the Sun with a period of 4.60 years and a low ellipticity (ovalness) of 0.036. The orbital plane is inclined by 1.7° to the plane of the ecliptic. Light curve data gives a synodic rotation period of 27.93±0.01 h, during which it varies in brightness with an amplitude of 0.18±0.02 magnitudes.[4] The cross-section diameter is 36 km. It is classified as an S-type asteroid in the Tholen taxonomy, suggesting a silicaceous (stony) composition.[2]

A search of quasi-complanar asteroids has shown that 215 Oenone and 1851 ≡ 1950 VA can approach to within 600 km of each other, one of the closest known potential proximities of astronomical bodies.[5]

  1. ^ Noah Webster (1884) A Practical Dictionary of the English Language
  2. ^ a b Cite error: The named reference jpldata was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference Schmadel2013 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference Pilcher2013 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Lazović1979 was invoked but never defined (see the help page).