8187 Akiramisawa
Discovery [1] | |
---|---|
Discovered by | S. Otomo |
Discovery site | Kiyosato Obs. (894) |
Discovery date | 15 December 1992 |
Designations | |
MPC designation | (8187) Akiramisawa |
Named after |
Akira Misawa (Japanese botanist)[2] |
1992 XL · 1971 UF4 1971 VV | |
main-belt · (outer) [3] | |
Orbital characteristics [1] | |
Epoch 4 September 2017 (JD 2458000.5) | |
Uncertainty parameter 0 | |
Observation arc | 44.79 yr (16,358 days) |
Aphelion | 3.3523 AU |
Perihelion | 2.6219 AU |
2.9871 AU | |
Eccentricity | 0.1223 |
5.16 yr (1,886 days) | |
351.90° | |
0° 11m 27.24s / day | |
Inclination | 11.608° |
83.066° | |
277.60° | |
Physical characteristics | |
Dimensions | 11.86 km (calculated)[3] |
±0.0015 5.8153h[4] | |
0.057 (assumed)[3] | |
C [3] | |
12.8[1] · ±0.27 13.45[5] · ±0.007 (R) 12.908[4] · 13.36[3] | |
|
8187 Akiramisawa, provisional designation 1992 XL, is a carbonaceous asteroid from the outer region of the asteroid belt, approximately 12 kilometers in diameter.
It was discovered by Japanese astronomer Satoru Otomo at Kiyosato Observatory (894) on 15 December 1992.[6] The asteroid was named after Japanese botanist Akira Misawa.[2]
Orbit and classification
Akiramisawa orbits the Sun in the outer main-belt at a distance of 2.6–3.4 AU once every 5 years and 2 months (1,886 days). Its orbit has an eccentricity of 0.12 and an inclination of 12° with respect to the ecliptic.[1] In October 1971, it was first identified as 1971 UF4 at the Chilean Cerro El Roble Station, extending the body's observation arc by 21 years prior to its official discovery observation at Kiyosato.[6]
Physical characteristics
A rotational lightcurve of Akiramisawa was obtained from photometric observations made at the Palomar Transient Factory in June 2010. Lightcurve analysis gave a rotation period of ±0.0015 hours with a brightness amplitude of 0.90 5.8153magnitude (U=2).[4]
The Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057, and calculates a diameter of 11.9 kilometers with an absolute magnitude of 13.36.[1]
Naming
This minor planet was named in honour of Japanese botanist Akira Misawa (1942–1994), a professor at Chiba University , who examined the effects of light pollution on plants.[2] The official naming citation was published by the Minor Planet Center on 9 January 2001 (M.P.C. 41935).[7]
References
- 1 2 3 4 5 "JPL Small-Body Database Browser: 8187 Akiramisawa (1992 XL)" (2016-08-04 last obs.). Jet Propulsion Laboratory. Retrieved 22 June 2017.
- 1 2 3 Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (8187) Akiramisawa. Springer Berlin Heidelberg. p. 637. ISBN 978-3-540-00238-3. Retrieved 4 May 2016.
- 1 2 3 4 5 "LCDB Data for (8187) Akiramisawa". Asteroid Lightcurve Database (LCDB). Retrieved 4 May 2016.
- 1 2 3 Waszczak, Adam; Chang, Chan-Kao; Ofek, Eran O.; Laher, Russ; Masci, Frank; Levitan, David; et al. (September 2015). "Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry". The Astronomical Journal. 150 (3): 35. Bibcode:2015AJ....150...75W. arXiv:1504.04041 . doi:10.1088/0004-6256/150/3/75. Retrieved 4 May 2016.
- ↑ Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus. 261: 34–47. Bibcode:2015Icar..261...34V. arXiv:1506.00762 . doi:10.1016/j.icarus.2015.08.007. Retrieved 4 May 2016.
- 1 2 "8187 Akiramisawa (1992 XL)". Minor Planet Center. Retrieved 4 May 2016.
- ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 4 May 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 (5001)-(10000) – Minor Planet Center
- 8187 Akiramisawa at the JPL Small-Body Database