 Lightcurve-base 3D-model of 215 Oenone. | |
| Discovery | |
|---|---|
| Discovered by | Viktor Knorre |
| Discovery date | 7 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 arc | 110.31 yr (40,289 d) |
| Aphelion | 2.87 AU (428.78 Gm) |
| Perihelion | 2.67 AU (398.77 Gm) |
| 2.77 AU (413.78 Gm) | |
| Eccentricity | 0.036257 |
| 4.60 yr (1,680.2 d) | |
Averageorbital speed | 17.91 km/s |
| 90.9597° | |
| 0° 12m 51.343s / day | |
| Inclination | 1.68583° |
| 25.0036° | |
| 315.903° | |
| Physical characteristics | |
| Dimensions | 46±1 km[3] 48±1 km[3] |
| 27.937 h (1.1640 d) | |
| 0.2044±0.011 | |
| S | |
| 9.4 | |
215 Oenone is a typicalmain beltasteroid. It was discovered by the Russian astronomerViktor Knorre on April 7, 1880, inGermany, and was the second of his four asteroid discoveries. The asteroid is named afterOenone, a nymph inGreek mythology.[4]
This body is orbiting theSun with aperiod of 4.60 years and a lowellipticity (ovalness) of 0.036. Theorbital plane isinclined by 1.7° to theplane of the ecliptic.Light curve data gives a synodicrotation period of27.93±0.01 h, during which it varies in brightness with an amplitude of0.18±0.02 magnitudes.[5] The cross-section diameter is 36 km. It is classified as anS-type asteroid in theTholen taxonomy, suggesting asiliceous (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.[6]
_mathilde.jpg) | This article about an asteroid native to theasteroid belt is astub. You can help Wikipedia byexpanding it. |
