19738 Calinger
Main-belt asteroid
From Wikipedia, the free encyclopedia
19738 Calinger (provisional designation 2000 AS97) is a background asteroid from the inner regions of the asteroid belt, approximately 3 kilometers in diameter.
| Discovery[1] | |
|---|---|
| Discovered by | LINEAR |
| Discovery site | Lincoln Lab's ETS |
| Discovery date | 4 January 2000 |
| Designations | |
| (19738) Calinger | |
Named after | Manetta Calinger (DCYSC mentor)[2] |
| 2000 AS97 · 1991 RZ36 | |
| main-belt · inner background | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 26.88 yr (9,819 days) |
| Aphelion | 2.7043 AU |
| Perihelion | 1.8606 AU |
| 2.2824 AU | |
| Eccentricity | 0.1848 |
| 3.45 yr (1,260 days) | |
| 165.65° | |
| 0° 17m 8.88s / day | |
| Inclination | 7.7356° |
| 90.753° | |
| 280.16° | |
| Physical characteristics | |
| Dimensions | 3.272±0.082[3] |
| 0.314±0.056[3] | |
| 14.1[1] | |
It was discovered on 4 January 2000, by members of the Lincoln Near-Earth Asteroid Research team at Lincoln Laboratory's Experimental Test Site in Socorro, New Mexico, and named after DCYSC-mentor Manetta Calinger.[2][4]
Classification and orbit
Calinger is a non-family asteroid from the main belt's background population. It orbits the Sun in the inner asteroid belt at a distance of 1.9–2.7 AU once every 3 years and 5 months (1,260 days). Its orbit has an eccentricity of 0.18 and an inclination of 8° with respect to the ecliptic.[1]
The body's observation arc begins almost 10 years prior to its official discovery observation, with a precovery from the Digitized Sky Survey taken at Palomar Observatory in May 1990.[4]
Physical characteristics
According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Calinger measures 3.272 kilometers in diameter and its surface has a high albedo of 0.314.[3] It has an absolute magnitude of 14.1.[1]
Lightcurves
As of 2017, Calinger's rotation period and shape remain unknown.[1][5]
Naming
This minor planet was named after Manetta Calinger who mentored a finalist in the 2003 Discovery Channel Youth Science Challenge, DCYSC.[2] The approved naming citation was published by the Minor Planet Center on 10 October 2003 (M.P.C. 49772).[6]
