21501 Acevedo
| Discovery [1] | |
|---|---|
| Discovered by | LONEOS |
| Discovery site | Anderson Mesa Stn. |
| Discovery date | 23 May 1998 |
| Designations | |
| MPC designation | 21501 Acevedo |
Named after |
Tony Acevedo (Arecibo staff member)[2] |
|
1998 KC8 · 1978 WY19 1998 HV149 | |
| main-belt · Flora [3] | |
| Orbital characteristics [1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 36.40 yr (13,295 days) |
| Aphelion | 2.4808 AU |
| Perihelion | 2.1481 AU |
| 2.3144 AU | |
| Eccentricity | 0.0718 |
| 3.52 yr (1,286 days) | |
| 171.47° | |
| 0° 16m 47.64s / day | |
| Inclination | 5.5860° |
| 261.51° | |
| 219.16° | |
| Physical characteristics | |
| Dimensions | 2.41 km (calculated)[3] |
| 6.5689±0.0050 h[4] | |
| 0.24 (assumed)[3] | |
| S [3] | |
|
14.9[1] 15.25[3] 14.803±0.003 (R)[4] 15.16±0.24[5] | |
|
| |
21501 Acevedo, provisional designation 1998 KC8, is a stony Flora asteroid from the inner regions of the asteroid belt, approximately 2.4 kilometers in diameter. It was discovered on 23 May 1998, by the U.S. Lowell Observatory Near-Earth Object Search (LONEOS) team at Anderson Mesa Station, Arizona.[2]
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 2.1–2.5 AU once every 3 years and 6 months (1,286 days). Its orbit has an eccentricity of 0.07 and an inclination of 6° with respect to the ecliptic.[1] The first precovery was taken at Palomar Observatory in 1978, extending the asteroid's observation arc by 20 years prior to its discovery.[2]
A fragmentary rotational light-curve of this asteroid was obtained from photometric observations made at the U.S. Palomar Transient Factory in August 2013. The light-curve gave a provisional rotation period of 6.5689±0.0050 hours with a brightness amplitude of 0.10 in magnitude (U=1).[4] The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – which derives from 8 Flora, the largest member and namesake of this orbital family – and calculates a diameter of 2.4 kilometers.[3]
The minor planet was named in honour of Tony Acevedo (b. 1950), staff member at the Arecibo Observatory in Puerto Rico, working as multimedia graphic designer and media officer.[2] Naming citation was published on 18 July 2008 (M.P.C. 63393).[6]
References
- 1 2 3 4 "JPL Small-Body Database Browser: 21501 Acevedo (1998 KC8)" (2015-04-23 last obs.). Jet Propulsion Laboratory. Retrieved April 2016.
- 1 2 3 4 "21501 Acevedo (1998 KC8)". Minor Planet Center. Retrieved April 2016.
- 1 2 3 4 5 6 "LCDB Data for (21501) Acevedo". Asteroid Lightcurve Database (LCDB). Retrieved April 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. arXiv:1504.04041. Bibcode:2015AJ....150...75W. doi:10.1088/0004-6256/150/3/75. Retrieved April 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. arXiv:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved April 2016.
- ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved April 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 (20001)-(25000) – Minor Planet Center
- 21501 Acevedo at the JPL Small-Body Database
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