Astronomy:215 Oenone
 Orbital diagram | |
| Discovery | |
|---|---|
| Discovered by | Viktor Knorre |
| Discovery date | 7 April 1880 |
| Designations | |
| (215) Oenone | |
| Pronunciation | /iːˈnoʊniː/[1] |
| Named after | Oenōnē |
| A880 GA | |
| Minor planet category | Main belt |
| Orbital characteristics[2] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 110.31 yr (40,289 d) |
| |{{{apsis}}}|helion}} | 2.87 astronomical unit|AU (428.78 Gm) |
| |{{{apsis}}}|helion}} | 2.67 AU (398.77 Gm) |
| 2.77 AU (413.78 Gm) | |
| Eccentricity | 0.036257 |
| Orbital period | 4.60 yr (1,680.2 d) |
| Average Orbital speed | 17.91 km/s |
| Mean anomaly | 90.9597° |
| Mean motion | 0° 12m 51.343s / day |
| Inclination | 1.68583° |
| Longitude of ascending node | 25.0036° |
| 315.903° | |
| Physical characteristics | |
| Dimensions | 35.51±0.9 km |
| Rotation period | 27.937 h (1.1640 d) |
| Geometric albedo | 0.2044±0.011 |
| S | |
| Absolute magnitude (H) | 9.4 |
Oenone (minor planet designation: 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]
References
- ↑ Noah Webster (1884) A Practical Dictionary of the English Language
- ↑ 2.0 2.1 "215 Oenone". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=215;cad=1.
- ↑ Schmadel, Lutz D. (November 11, 2013), Dictionary of Minor Planet Names, Berlin Heidelberg: Springer, p. 50, ISBN 9783662066157, https://books.google.com/books?id=eHv1CAAAQBAJ&pg=PA50
- ↑ Pilcher, Frederick (July 2013), "Three Asteroids with Changing Lightcurves: 12 Victoria, 177 Irma, and 215 Oenone", Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers 40 (3): 161–163, Bibcode: 2013MPBu...40..161P
- ↑ Lazović, J.; Kuzmanoski, M. (1979), "Perturbing Effects of the Asteroid 215 Oenone on the Asteroid 1851 = 1950 VA During their Proximity", Publications of the Department of Astronomy – Beograd 9, http://elib.mi.sanu.ac.rs/files/journals/pda/9/broj9_clanak7.pdf, retrieved 2020-11-24
External links
- The Asteroid Orbital Elements Database
- Minor Planet Discovery Circumstances
- 215 Oenone at AstDyS-2, Asteroids—Dynamic Site
- 215 Oenone at the JPL Small-Body Database
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