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2575 Bulgaria, provisional designation 1970 PL, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 7 kilometers in diameter. It was discovered on 4 August 1970, by Russian astronomer Tamara Smirnova at the Crimean Astrophysical Observatory in Nauchnyj, on the Crimean peninsula. It was named for country Bulgaria.

Classification and orbit

Bulgaria is a member of the Flora family, one of the largest groups of stony asteroids in the main-belt. It orbits the Sun in the inner main-belt at a distance of 2.0–2.5 AU once every 3 years and 4 months (1,225 days). Its orbit has an eccentricity of 0.12 and an inclination of 5° with respect to the ecliptic.

Physical characteristics

In the SMASS taxonomy, Bulgaria has been classified as a Sr-type, which transitions from common S-type asteroids to the rather rare R-type asteroids.

Bulgaria has a rotation period of 8.6 hours and an albedo of 0.24, as assumed by the Collaborative Asteroid Lightcurve Link.

Naming

This minor planet was named after the European country Bulgaria. At the time of naming, it was the People's Republic of Bulgaria (1946–1990), a former satellite state of the Soviet Union and member of the Warsaw Pact. The official naming citation was published by the Minor Planet Center on 13 July 1984 (M.P.C. 8912).

References

1. ^ "JPL Small-Body Database Browser: 2575 Bulgaria (1970 PL)" (2017-06-05 last obs.). Jet Propulsion Laboratory. Retrieved 14 June 2017.
2. ^ Schmadel, Lutz D. (2007). "(2575) Bulgaria". Dictionary of Minor Planet Names – (2575) Bulgaria. Springer Berlin Heidelberg. p. 210. doi:10.1007/978-3-540-29925-7_2576. ISBN 978-3-540-00238-3.
3. ^ "LCDB Data for (2575) Bulgaria". Asteroid Lightcurve Database (LCDB). Retrieved 6 December 2016.
4. ^ 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. arXiv:1209.5794. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. Retrieved 6 December 2016.
5. ^ Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal. 741 (2): 25. arXiv:1109.6407. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90.
6. ^ 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 6 December 2016.
7. Behrend, Raoul. "Asteroids and comets rotation curves – (2575) Bulgaria". Geneva Observatory. Retrieved 6 December 2016.
8. 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 6 December 2016.
9. "2575 Bulgaria (1970 PL)". Minor Planet Center. Retrieved 6 December 2016.
10. "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 6 December 2016.

External links

• 2575 Bulgaria in NASA's Planetary Data System
• Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
• 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
• 2575 Bulgaria at AstDyS-2, Asteroids—Dynamic Site
  • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
• 2575 Bulgaria at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit viewer · Orbit parameters · Physical parameters

• Minor planet object articles (numbered)
• Flora asteroids
• Discoveries by Tamara Mikhaylovna Smirnova
• Named minor planets
• Sr-type asteroids (SMASS)
• Astronomical objects discovered in 1970