31641 Cevasco
| Discovery [1] | |
|---|---|
| Discovered by | LINEAR |
| Discovery site | MRO |
| Discovery date | 6 April 1999 |
| Designations | |
| MPC designation | 31641 Cevasco |
|
Named after
|
Hannah Olivia Cevasco (2015 Broadcom MASTERS)[2] |
| 1999 GW34 · 1993 RR14 | |
| main-belt · (inner) [3] | |
| Orbital characteristics [1] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 21.80 yr (7,964 days) |
| Aphelion | 2.7526 AU |
| Perihelion | 2.1232 AU |
| 2.4379 AU | |
| Eccentricity | 0.1290 |
| 3.81 yr (1,390 days) | |
| 191.83° | |
| Inclination | 1.2135° |
| 278.39° | |
| 215.73° | |
| Physical characteristics | |
| Dimensions | 3.26 km (calculated)[3] |
| 2.6556±0.1936 h[3] 2.8167±0.0127 h[4] 2.820±0.010 h[5] |
|
| 0.20 (assumed)[3] | |
| S [3] | |
| 14.8[1][3] 14.940[5] |
|
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31641 Cevasco, provisional designation 1999 GW34, is a stony asteroid from the inner regions of the asteroid belt, about 3.3 kilometers in diameter. It was discovered on 6 April 1999, by the Lincoln Near-Earth Asteroid Research project (LINEAR) at the U.S. Magdalena Ridge Observatory in Socorro, New Mexico.[6]
The S-type asteroid orbits the Sun at a distance of 2.1–2.8 AU once every 3 years and 10 months (1,390 days). Its orbit shows an eccentricity of 0.13 and an inclination of only 1 degree from the plane of the ecliptic.[1]
Photometric light-curve observations at the U.S. Palomar Transient Factory in 2010, 2012 and 2014, measured the asteroid's rotation period to be 2.6556±0.1936, 2.8167±0.0127 and 2.820±0.010 hours with a brightness variation of 0.71, 0.48 and 0.54 in magnitude, respectively (U=2).[4][5] The Collaborative Asteroid Lightcurve Link (CALL) calculated a diameter of 3.26 kilometers based on an absolute magnitude of 14.8, and an assumed albedo of 0.20, which is a typical value for stony asteroids.[3]
The minor planet was named in honor of Hannah Olivia Cevasco (b. 2000) finalist in the 2015 Broadcom MASTERS, a math and science competition for middle school students, for her medicine and health sciences project. At the time she attended the St. Charles School in California.[6]
References
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<references />, or <references group="..." />External links
- 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 (30001)-(35000) – Minor Planet Center
- 31641 Cevasco at the JPL Small-Body Database
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