14627 Emilkowalski
| Discovery | |
|---|---|
| Discovered by | R. A. Kowalski |
| Discovery site | Quail Hollow Obs. |
| Discovery date | 7 November 1998 |
| Designations | |
| MPC designation | (14627) Emilkowalski |
|
Named after
|
Emil Kowalski (discoverer's family) |
| 1998 VA | |
| main-belt · (inner) | |
| Orbital characteristics | |
| Epoch 16 February 2017 (JD 2457800.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 62.01 yr (22,648 days) |
| Aphelion | 2.9885 AU |
| Perihelion | 2.2138 AU |
| 2.6011 AU | |
| Eccentricity | 0.1489 |
| 4.20 yr (1,532 days) | |
| 104.46° | |
| 0° 14m 5.64s / day | |
| Inclination | 17.747° |
| 41.443° | |
| 44.569° | |
| Jupiter Tisserand parameter | 3.3320 |
| Physical characteristics | |
| Dimensions |
6.98±2.55 km 7.105±0.106 km 10.61 km (calculated) |
|
11.131 h 11.131±0.005h |
|
| 0.057 (assumed) 0.120±0.108 0.201±0.017 |
|
| C · DL | |
| 13.1 · 13.38 (R) · 13.6 · 13.7 · 14.19±0.75 | |
14627 Emilkowalski, provisional designation 1998 VA, is an asteroid from the inner regions of the asteroid belt, approximately 7 to 10 kilometers in diameter. It was discovered on 7 November 1998, by American astronomer Richard Kowalski at the U.S. Quail Hollow Observatory (761) in Zephyrhills, Florida.
The asteroid orbits the Sun at a distance of 2.2–3.0 AU once every 4 years and 2 months (1,532 days). Its orbit has an eccentricity of 0.15 and an inclination of 18° with respect to the ecliptic. Emilkowalski is the biggest member of a collisional group of asteroids, that resulted from the destruction of a larger parent body. The disruption happened approximately 220,000 years ago and it is one of the most recent asteroid breakups discovered in the main belt. The first unused observation at Palomar Observatory (DSS) dates back to 1953. The first used precovery was taken at Siding Spring Observatory in 1975, extending the asteroid's observation arc by 23 years prior to its discovery.
Between January and March 2012, photometric observations for this asteroid were made by a team led by Petr Pravec at Ondřejov Observatory, Czech Republic. The three obtained rotational light-curves gave an identical period of 11.131 hours with a brightness variation of 0.55, 0.64 and 0.65 in magnitude, respectively (U=3/2+/3-). Previously, during the first quarter of 2008, a light-curve was obtained from observations at Simeiz Observatory and the Chuguev Observing Station (121) in Ukraine, as well as at Maidanak Observatory, Uzbekistan. It also gave a period of 11.131 hours with an amplitude of 0.85 in magnitude, which implies an elongated shape (U=n.a.).
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