4150 Starr
| Discovery [1] | |
|---|---|
| Discovered by | B. A. Skiff |
| Discovery site | Anderson Mesa Stn. |
| Discovery date | 31 August 1984 |
| Designations | |
| MPC designation | 4150 Starr |
Named after |
Richard Starkey (Ringo Starr, The Beatles)[2] |
|
1984 QC1 · 1957 KG 1964 RH · 1973 FD2 1974 QM1 · 1980 EA2 1981 TO2 · 1981 WE6 1981 WJ3 · 1988 YC 2004 SL12 | |
| main-belt · Flora [3] | |
| Orbital characteristics [1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 59.02 yr (21,558 days) |
| Aphelion | 2.6051 AU |
| Perihelion | 1.8619 AU |
| 2.2335 AU | |
| Eccentricity | 0.1664 |
| 3.34 yr (1,219 days) | |
| 214.88° | |
| 0° 17m 43.08s / day | |
| Inclination | 3.1952° |
| 122.94° | |
| 197.20° | |
| Physical characteristics | |
| Dimensions |
6.903±0.050 km[4] 7.47 km (calculated)[3] |
|
4.5179±0.0005 h[lower-alpha 1] 4.5179±0.0005 h[5] 6.8 h[6] | |
|
0.24 (assumed)[3] 0.2584±0.0469[4] | |
| S [3][7] | |
|
12.50±0.48[7] 12.8[1][3] 12.9[4] | |
|
| |
4150 Starr, provisional designation 1984 QC1, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 7 kilometers in diameter. It was discovered by American astronomer Brian A. Skiff at Lowell's Anderson Mesa Station on 31 August 1984.[8]
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 1.9–2.6 AU once every 3 years and 4 months (1,219 days). Its orbit has an eccentricity of 0.17 and an inclination of 3° with respect to the ecliptic.[1] The first observation was made at the U.S. Goethe Link Observatory in 1957, extending the asteroid's observation arc by 27 years prior to its discovery.[8]
According to the space-based survey by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, the asteroid measures 6.9 kilometers in diameter and its surface has an albedo of 0.258,[4] while the Collaborative Asteroid Lightcurve Link (CALL) assumes an albedo of 0.24 – derived from 8 Flora, the family's largest member and namesake – and calculates a diameter of 7.5 kilometers, based on an absolute magnitude of 12.8.[3]
Several rotational light-curves were obtained for this asteroid from photometric observations. An unpublished light-curve by Kryszczynska from November 2011, has been rated best by CALL.[3] It gave a rotation period of 4.5179±0.0005 hours and a brightness variation of 0.20 in magnitude (U=3).[lower-alpha 1]
The minor planet was named in after Richard Starkey (b. 1940), better known as Ringo Starr, the drummer of The Beatles. He joined the English rock band in 1962, replacing its former drummer Pete Best. Ringo has released various albums in his solo career and also acted in several movies.[2] Naming citation was published on 10 April 1990 (M.P.C. 16248).[9] The minor planets 8749 Beatles, 4147 Lennon, 4148 McCartney and 4149 Harrison were named after the band and its three other members.
References
- 1 2 Kryszczynska (2012a), unpublished data: rotation period 4.5179±0.0005 hours with a brightness amplitude of 0.20 mag. CALL rates the light-curve as well-defined on its quality scheme. Summary figures at Collaborative Asteroid Lightcurve Link (CALL) for (4150) Starr
- 1 2 3 4 "JPL Small-Body Database Browser: 4150 Starr (1984 QC1)" (2016-06-06 last obs.). Jet Propulsion Laboratory. Retrieved 16 August 2016.
- 1 2 Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (4150) Starr. Springer Berlin Heidelberg. p. 355. ISBN 978-3-540-00238-3. Retrieved 16 August 2016.
- 1 2 3 4 5 6 7 "LCDB Data for (4150) Starr". Asteroid Lightcurve Database (LCDB). Retrieved 16 August 2016.
- 1 2 3 4 Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results" (PDF). The Astrophysical Journal. 741 (2): 25. arXiv:1109.6407
. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved 16 August 2016. - ↑ Bianchi, E. (December 1920). "Osservazioni fotometriche di pianeti". Memorie della Società Astronomia Italiana. 2: 45. Bibcode:1921MmSAI...2...45B. Retrieved 16 August 2016.
- ↑ Angeli, C. A.; Guimarã; es, T. A.; Lazzaro, D.; Duffard, R.; Fernández, S.; et al. (April 2001). "Rotation Periods for Small Main-Belt Asteroids From CCD Photometry". The Astronomical Journal. 121 (4): 2245–2252. Bibcode:2001AJ....121.2245A. doi:10.1086/319936. Retrieved 16 August 2016.
- 1 2 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 16 August 2016.
- 1 2 "4150 Starr (1984 QC1)". Minor Planet Center. Retrieved 16 August 2016.
- ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 16 August 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
- 4150 Starr at the JPL Small-Body Database
