Astronomy:2575 Bulgaria
| Discovery [1] | |
|---|---|
| Discovered by | T. Smirnova |
| Discovery site | Crimean Astrophysical Obs. |
| Discovery date | 4 August 1970 |
| Designations | |
| (2575) Bulgaria | |
| Named after | Bulgaria (European country)[2] |
| 1970 PL · 1970 QD 1977 RQ6 · 1980 PY A923 PB | |
| Minor planet category | main-belt · Flora [3] |
| Orbital characteristics [1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 93.80 yr (34,259 days) |
| |{{{apsis}}}|helion}} | 2.5157 AU |
| |{{{apsis}}}|helion}} | 1.9645 AU |
| 2.2401 AU | |
| Eccentricity | 0.1230 |
| Orbital period | 3.35 yr (1,225 days) |
| Mean anomaly | 79.666° |
| Mean motion | 0° 17m 38.4s / day |
| Inclination | 4.6737° |
| Longitude of ascending node | 321.99° |
| 287.29° | |
| Physical characteristics | |
| Dimensions | 6.41±0.29 km[4] 7.08 km (calculated)[3] 8.010±0.065 km[5] |
| Rotation period | 8.6157±0.0082 h[6] 9.480±0.001 h[7] |
| Geometric albedo | 0.24 (assumed)[3] 0.2521±0.0375[5] 0.392±0.060[4] |
| SMASS = Sr [1] · S [3] | |
| Absolute magnitude (H) | 12.466±0.003 (R)[6] · 12.6[5][4] · 12.7[1] · 12.92[3] · 13.31±0.29[8] |
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.[9] It was named for country Bulgaria.[2]
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.[1]
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.[1]
Bulgaria has a rotation period of 8.6 hours[6] and an albedo of 0.24, as assumed by the Collaborative Asteroid Lightcurve Link.[3]
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.[2] The official naming citation was published by the Minor Planet Center on 13 July 1984 (M.P.C. 8912).[10]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 "JPL Small-Body Database Browser: 2575 Bulgaria (1970 PL)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2002575. Retrieved 14 June 2017.
- ↑ 2.0 2.1 2.2 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.
- ↑ 3.0 3.1 3.2 3.3 3.4 3.5 "LCDB Data for (2575) Bulgaria". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=2575%7CBulgaria. Retrieved 6 December 2016.
- ↑ 4.0 4.1 4.2 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. doi:10.1088/2041-8205/759/1/L8. Bibcode: 2012ApJ...759L...8M. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012ApJ...759L...8M. Retrieved 6 December 2016.
- ↑ 5.0 5.1 5.2 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. doi:10.1088/0004-637X/741/2/90. Bibcode: 2011ApJ...741...90M.
- ↑ 6.0 6.1 6.2 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. doi:10.1088/0004-6256/150/3/75. Bibcode: 2015AJ....150...75W. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015AJ....150...75W. Retrieved 6 December 2016.
- ↑ Behrend, Raoul. "Asteroids and comets rotation curves – (2575) Bulgaria". Geneva Observatory. http://obswww.unige.ch/~behrend/page4cou.html#002575. Retrieved 6 December 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. doi:10.1016/j.icarus.2015.08.007. Bibcode: 2015Icar..261...34V. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015Icar..261...34V. Retrieved 6 December 2016.
- ↑ "2575 Bulgaria (1970 PL)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=2575. Retrieved 6 December 2016.
- ↑ "MPC/MPO/MPS Archive". Minor Planet Center. https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html. Retrieved 6 December 2016.
External links
- 2575 Bulgaria in NASA's Planetary Data System
- 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
- 2575 Bulgaria at AstDyS-2, Asteroids—Dynamic Site
- 2575 Bulgaria at the JPL Small-Body Database
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