6267 Rozhen

6267 Rozhen
Discovery [1]
Discovered by E. W. Elst
Discovery site Rozhen Obs.
Discovery date 20 September 1987
Designations
MPC designation 6267 Rozhen
Named after
 Rozhen Observatory
(discovering observatory)[2]
1987 SO9 · 1971 SP
1979 BR2
main-belt · Flora [3]
Orbital characteristics [1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 64.53 yr (23,570 days)
Aphelion 2.3584 AU
Perihelion 1.9661 AU
2.1622 AU
Eccentricity 0.0907
3.18 yr (1,161 days)
308.52°
0° 18m 36s / day
Inclination 2.1034°
136.75°
315.53°
Physical characteristics
Dimensions 3.02 km (calculated)[3]
3.980±0.020 h[4]
3.9847±0.0007 h[5]
0.24 (assumed)[3]
S [3]
14.270±0.120 (R)[4]
14.3[1]
14.316±0.001 (R)[5]
14.77[3]
14.79±0.28[6]

    6267 Rozhen, provisional designation 1987 SO9, is a stony Flora asteroid from the inner regions of the asteroid belt, approximately 3 kilometers in diameter. It was discovered on 20 September 1987, by Belgian astronomer Eric Elst at Rozhen Observatory near Smoljan, Bulgaria.[7] For four days, between 27 and 31 January 2005, the body was briefly and erroneously renamed 6267 Smolyan.[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 2.0–2.4 AU once every 3 years and 2 months (1,161 days). Its orbit has an eccentricity of 0.09 and an inclination of 2° with respect to the plane of the ecliptic.[1] The first precovery was taken at Palomar Observatory in 1949, extending the asteroid's observation arc by 38 years prior to its discovery.[7]

    In January 2014, two rotational light-curves for this asteroid were obtained from photometric observations at the U.S. Palomar Transient Factory, California. They rendered a rotation period of 3.9847±0.0007 and 3.980±0.020 hours with a brightness variation of 0.14 and 0.12 in magnitude (U=2/2), respectively.[4][5] The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24, derived from the Flora family's largest member and namesake, the asteroid 8 Flora, and calculates a diameter of 3.0 kilometers, based on an absolute magnitude of 14.77.[3]

    The minor planet was named after the discovering Rozhen Observatory, also known as the Bulgarian National Astronomical Observatory, that has been established at Rozhen in 1981. It is located near the city of Smoljan and in proximity to the border with Greece. At 1700 meters above sea leavel, the observatory benefits from superb instrumental and observational conditions. An exhaustive survey for the discovery of minor planets was launched at Rozhen in 1986.[2] Naming citation was published on 20 November 2002 (M.P.C. 47163).[9]

    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 6267 Rozhen (1987 SO9)" (2014-06-05 last obs.). Jet Propulsion Laboratory. Retrieved 4 July 2016.
    2. 1 2 Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (6267) Rozhen. Springer Berlin Heidelberg. p. 522. ISBN 978-3-540-00238-3. Retrieved 4 July 2016.
    3. 1 2 3 4 5 6 "LCDB Data for (6267) Rozhen". Asteroid Lightcurve Database (LCDB). Retrieved 4 July 2016.
    4. 1 2 3 Chang, Chan-Kao; Ip, Wing-Huen; Lin, Hsing-Wen; Cheng, Yu-Chi; Ngeow, Chow-Choong; Yang, Ting-Chang; et al. (August 2015). "Asteroid Spin-rate Study Using the Intermediate Palomar Transient Factory". The Astrophysical Journal Supplement Series. 219 (2): 19. arXiv:1506.08493Freely accessible. Bibcode:2015ApJS..219...27C. doi:10.1088/0067-0049/219/2/27. Retrieved 4 July 2016.
    5. 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:1504.04041Freely accessible. Bibcode:2015AJ....150...75W. doi:10.1088/0004-6256/150/3/75. Retrieved 4 July 2016.
    6. ↑ 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:1506.00762Freely accessible. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 4 July 2016.
    7. 1 2 "6267 Rozhen (1987 SO9)". Minor Planet Center. Retrieved 4 July 2016.
    8. ↑ "Major News about Minor Planets". hohmanntransfer.com. 28 February 2005. Retrieved 1 January 2016.
    9. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 4 July 2016.

    External links

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