4263 Abashiri
| Discovery [1] | |
|---|---|
| Discovered by |
M. Yanai K. Watanabe |
| Discovery site | Kitami Observatory |
| Discovery date | 7 September 1989 |
| Designations | |
| MPC designation | 4263 Abashiri |
Named after |
Abashiri (Japanese city)[2] |
|
1989 RL2 · 1935 KE 1952 OS · 1969 TS3 1972 OB · 1978 EK 1981 AT1 · 1982 PF 1988 DK5 | |
| main-belt · Flora [3] | |
| Orbital characteristics [1] | |
| Epoch 27 June 2015 (JD 2457200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 64.57 yr (23,586 days) |
| Aphelion | 2.5437 AU |
| Perihelion | 1.9260 AU |
| 2.2349 AU | |
| Eccentricity | 0.1381 |
| 3.34 yr (1,220 days) | |
| 353.26° | |
| Inclination | 5.8056° |
| 298.08° | |
| 307.58° | |
| Physical characteristics | |
| Dimensions |
8.98±0.44 km[4] 7.17 km (derived)[3] |
|
4.8820±0.0002 h[lower-alpha 1] 4.8817±0.0001 h[lower-alpha 1] | |
|
0.200±0.033[4] 0.24 (assumed)[3] | |
| S [3] | |
| 12.7[1] | |
|
| |
4263 Abashiri, provisional designation 1989 RL2, is a stony asteroid from the inner regions of the asteroid belt, about 8 kilometers in diameter. It was discovered on 7 September 1989, by Japanese astronomers Masayuki Yanai and Kazuro Watanabe at Kitami Observatory in eastern Hokkaidō, Japan.[5]
The S-type asteroid is a member of the Flora family, one of the largest groups of stony asteroids in the main-belt. It orbits the Sun at a distance of 1.9–2.5 AU once every 3 years and 4 months (1,220 days). Its orbit shows an eccentricity of 0.14 and an inclination of 6 degrees from the plane of the ecliptic.[1]
In 2008 and 2011, two photometric light-curve analysis by Czech astronomer Petr Pravec have rendered a well-defined rotation period of 4.8820±0.0002 and 4.8817±0.0001 hours with a corresponding brightness amplitude of 0.15 and 0.11 in magnitude, respectively.[lower-alpha 1] According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, the asteroid's surface has an albedo of 0.20, while the Collaborative Asteroid Lightcurve Link (CALL) assumes a value of 0.24, which is identical to the albedo of the Flora family's namesake, the asteroid 8 Flora.[3][4]
The minor planet was named for the city of Abashiri (pop. 40,000) in the eastern part of the island of Hokkaidō, after which the minor planet, 3720 Hokkaido is named. Located at the Sea of Okhotsk, the city has prospered for many years on account of its fishing industry, and it serves as a center for transportation, culture and commerce.[2]
References
- 1 2 3 Pravec (2008) web: rotation period 4.8820±0.0002 hours with a brightness amplitude of 0.15 mag, and Pravec (2012) web: rotation period 4.8817±0.0001 hours with a brightness amplitude of 0.11 mag. Both observations are denoted as a secure results (within the precision given and no ambiguity, U=3) by the Collaborative Asteroid Lightcurve Link (CALL). Summary figures at Collaborative Asteroid Lightcurve Link (CALL) for (4263) Abashiri
- 1 2 3 4 "JPL Small-Body Database Browser: 4263 Abashiri (1989 RL2)" (2015-09-02 last obs.). Jet Propulsion Laboratory. Retrieved January 2016.
- 1 2 Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (4263) Abashiri. Springer Berlin Heidelberg. p. 365. ISBN 978-3-540-00238-3. Retrieved January 2016.
- 1 2 3 4 5 "LCDB Data for (4263) Abashiri". Asteroid Lightcurve Database (LCDB). Retrieved January 2016.
- 1 2 3 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; et al. (November 2012). "Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids". The Astrophysical Journal Letters 759 (1): 5. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. Retrieved January 2016.
- ↑ "4263 Abashiri (1989 RL2)". Minor Planet Center. Retrieved January 2016.
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 (1)-(5000) – Minor Planet Center
- 4263 Abashiri at the JPL Small-Body Database
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