15268 Wendelinefroger
| Discovery [1] | |
|---|---|
| Discovered by | E. W. Elst |
| Discovery site | ESO's La Silla Obs. |
| Discovery date | 18 November 1990 |
| Designations | |
| MPC designation | 15268 Wendelinefroger |
|
Named after
|
Wendeline Froger (Belgian singer)[2] |
| 1990 WF3 · 1979 WA7 1986 PO5 · 1999 CD133 |
|
| main-belt · (inner) [3] | |
| Orbital characteristics [1] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 13145 days (35.99 yr) |
| Aphelion | 2.9217 AU (437.08 Gm) |
| Perihelion | 1.8096 AU (270.71 Gm) |
| 2.3657 AU (353.90 Gm) | |
| Eccentricity | 0.23505 |
| 3.64 yr (1329.0 d) | |
| 8.4613° | |
| Inclination | 2.7542° |
| 144.06° | |
| 210.31° | |
| Known satellites | 1 [4][lower-alpha 1] |
| Earth MOID | 0.803386 AU (120.1848 Gm) |
| Jupiter MOID | 2.50958 AU (375.428 Gm) |
| Physical characteristics | |
| Dimensions | 3.41 km (calculated)[3] |
| 2.4224±0.0001 h[5] | |
| 0.20 (assumed)[3] | |
| S [3] | |
| 14.7[1] | |
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15268 Wendelinefroger, provisional designation 1990 WF3, is a stony, spheroidal, and binary[lower-alpha 1] asteroid from the inner regions of the asteroid belt, about 3.4 kilometers in diameter. It was discovered by Belgian astronomer Eric Elst at ESO's La Silla Observatory in northern Chile, on 18 November 1990.[6]
The S-type asteroid orbits the Sun at a distance of 1.8–2.9 AU once every 3 years and 8 months (1,329 days). Its orbit is tilted by 3 degrees to the plane of the ecliptic and shows a relatively high eccentricity of 0.24.[1] A light-curve analysis at the Leura Observatory in Australia rendered a rotation period of 2.4 hours with a low brightness amplitude of 0.07 in magnitude, which indicates that the asteroid is of nearly spheroidal shape.[5] It has an albedo of 0.20, as assumed by the Collaborative Asteroid Lightcurve Link (CALL), which is a typical value for bodies with a stony surface composition.[3]
In 2008, a minor-planet moon was discovered orbiting Wendelinefroger at a distance of 8.7 kilometers and with an orbital period of 25.07±0.02 hours.[4][5] Based on mutual occultations of Wendelinefroger and its moon, the diameter ratio for the two bodies is at least 0.24 (i.e. secondary-to-primary mean-diameter ratio),[lower-alpha 1] which would render an estimated diameter of 0.8 kilometer or more for the asteroid's moon, using CALL's calculated diameter of 3.4 kilometer for the primary body.
The minor planet is named in honour of Belgian female singer Wendeline Froger (b. 1948), who has a soprano voice and performs at church celebrations, weddings and for selected audiences at her residence. She has a preference to sing Lieder by Robert Schumann, after whom the minor planet 4003 Schumann is named.[2]
References
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<references />, or <references group="..." />External links
- CBET 1542, 20 October 2008
- Asteroid Lightcurve Database (LCDB), query form (info)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (15001)-(20000) – Minor Planet Center
- 15268 Wendelinefroger at the JPL Small-Body Database
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