5653 Camarillo (/ˌkæməˈriːoʊ/ KAM-ə-REE-oh), provisional designation 1992 WD5, is a stony asteroid and near-Earth object of the Amor group, approximately 1.5 kilometers in diameter.
| Discovery [1] | |
|---|---|
| Discovered by | E. F. Helin K. Lawrence |
| Discovery site | Palomar Obs. |
| Discovery date | 21 November 1992 |
| Designations | |
| (5653) Camarillo | |
| Pronunciation | /ˌkæməˈriːoʊ/ KAM-ə-REE-oh |
Named after | Camarillo (city in California) |
| 1992 WD5 | |
| NEO · Amor [1][2] | |
| Orbital characteristics [1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 43.23 yr (15,789 days) |
| Aphelion | 2.3402 AU |
| Perihelion | 1.2484 AU |
| 1.7943 AU | |
| Eccentricity | 0.3043 |
| 2.40 yr (878 days) | |
| 77.730° | |
| 0° 24m 36.36s / day | |
| Inclination | 6.8739° |
| 9.9739° | |
| 122.51° | |
| Earth MOID | 0.2846 AU · 110.9 LD |
| Physical characteristics | |
| Dimensions | 1.526 km[3] 1.53 km (taken)[4] 1.537±0.016 km[5][6] 1.573±0.287 km[7] |
| 4.834±0.005 h[8] 4.8346±0.0002 h[9] 4.8350±0.0018 h[10] | |
| 0.2052[3] 0.220±0.097[7] 0.271±0.057[5][6] | |
| S [4][a] · S/Sr [11] | |
| 15.83±0.2 (R)[b] · 15.980±0.007 (R)[10] · 16.1[1][5] · 16.28±0.3[7] · 16.31±0.33[12] · 16.42[4] · 16.42±0.13[3] | |
It was discovered on 21 November 1992, by American astronomers Eleanor Helin and Kenneth Lawrence at Palomar Observatory in California, United States.[2] The asteroid was named for the Californian town of Camarillo.[13]
Orbit and classification
Camarillo orbits the Sun at a distance of 1.2–2.3 AU once every 2 years and 5 months (878 days). Its orbit has an eccentricity of 0.30 and an inclination of 7° with respect to the ecliptic.[1]
It has an Earth minimum orbit intersection distance, MOID, of 0.2846 AU (42,600,000 km), which corresponds to 110.9 lunar distances.[1]
A first precovery was taken at the Australian Siding Spring Observatory in 1974, extending the body's observation arc by 18 years prior to its official discovery observation at Palomar.[2]
Physical characteristics
The S-type asteroid has also been characterized as a Sr-subtype, a transitional group to the R-type asteroids.[11]
Lightcurves
Between 1995 and 2015, several rotational lightcurves of Camarillo gave a well-defined rotation period of 4.834 hours with a brightness amplitude between 0.4 and 0.85 magnitude.[8][9][10][14][b]
Diameter and albedo
According to the surveys carried out by NASA's space-based Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Camarillo has an albedo between 0.21 and 0.25 with a corresponding diameter of 1.53 to 1.57 kilometers.[3][5][6][7]
Naming
This minor planet was named after for the Californian town of Camarillo and its Camarillo Observatory (670). The town was named after Adolfo Camarillo (1864–1958), a well known regional rancher. The first discoverer is a former town resident.[13] The official naming citation was published by the Minor Planet Center on 4 August 2001 (M.P.C. 43189).[15]
References
References
External links
- Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- 5653 Camarillo at NeoDyS-2, Near Earth Objects—Dynamic Site
- 5653 Camarillo at ESA–space situational awareness
- 5653 Camarillo at the JPL Small-Body Database
