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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.[9] It was named for country Bulgaria.[2]

For other uses, see Bulgaria (disambiguation).
2575 Bulgaria
Discovery [1]
Discovered byT. Smirnova
Discovery siteCrimean Astrophysical Obs.
Discovery date4 August 1970
Designations
MPC designation
(2575) Bulgaria
Named after
Bulgaria
(European country)[2]
Alternative designations
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 arc93.80 yr (34,259 days)
Aphelion2.5157 AU
Perihelion1.9645 AU
Semi-major axis
2.2401 AU
Eccentricity0.1230
Orbital period (sidereal)
3.35 yr (1,225 days)
Mean anomaly
79.666°
Mean motion
0° 17m 38.4s / day
Inclination4.6737°
Longitude of ascending node
321.99°
Argument of perihelion
287.29°
Physical characteristics
Dimensions6.41±0.29 km[4]
7.08 km (calculated)[3]
8.010±0.065 km[5]
Synodic 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]
Spectral type
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]

    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. "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.



    На других языках

    [de] (2575) Bulgaria

    (2575) Bulgaria ist ein Hauptgürtelasteroid vom Spektraltyp Sr, der am 4. August 1970 von der sowjetischen Astronomin Tamara Michailowna Smirnowa am Krim-Observatorium in Nautschnyj (IAU-Code 095) in der Ukraine entdeckt wurde. Er wurde nach dem Land Bulgarien benannt. Zum Zeitpunkt der Benennung war die Volksrepublik Bulgarien Mitglied des Warschauer Paktes und ein Satellitenstaat der Sowjetunion.
    - [en] 2575 Bulgaria

    [ru] (2575) Болгария

    (2575) Болгария (болг. България) — типичный астероид главного пояса, который был открыт 4 августа 1970 года советским астрономом Тамарой Смирновой в Крымской обсерватории, в 25 километрах от Симферополя и назван в честь государства в Юго-Востоке Европы — Болгарии[1].


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