| 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 | |
| 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) |
| Aphelion | 2.5157AU |
| Perihelion | 1.9645 AU |
| 2.2401 AU | |
| Eccentricity | 0.1230 |
| 3.35yr (1,225 days) | |
| 79.666° | |
| 0° 17m 38.4s / day | |
| Inclination | 4.6737° |
| 321.99° | |
| 287.29° | |
| Physical characteristics | |
| Dimensions | 6.41±0.29 km[4] 7.08 km(calculated)[3] 8.010±0.065 km[5] |
| 8.6157±0.0082h[6] 9.480±0.001 h[7] | |
| 0.24(assumed)[3] 0.2521±0.0375[5] 0.392±0.060[4] | |
| SMASS = Sr[1] · S[3] | |
| 12.466±0.003(R)[6] · 12.6[5][4] · 12.7[1] · 12.92[3] · 13.31±0.29[8] | |
2575 Bulgaria, provisional designation1970 PL, is a stony Florianasteroid from the inner regions of theasteroid belt, approximately 7 kilometers in diameter. It was discovered on 4 August 1970, by Russian astronomerTamara Smirnova at theCrimean Astrophysical Observatory in Nauchnyj, on the Crimean peninsula.[9] It was named for countryBulgaria.[2]
Bulgaria is a member of theFlora family, one of the largest groups of stony asteroids in the main-belt. It orbits the Sun in theinner main-belt at a distance of 2.0–2.5 AU once every 3 years and 4 months (1,225 days). Its orbit has aneccentricity of 0.12 and aninclination of 5° with respect to theecliptic.[1]
In theSMASS taxonomy,Bulgaria has been classified as a Sr-type, which transitions from commonS-type asteroids to the rather rareR-type asteroids.[1]
Bulgaria has arotation period of 8.6 hours[6] and analbedo of 0.24, as assumed by the Collaborative Asteroid Lightcurve Link.[3]
Thisminor planet was named after the European countryBulgaria. At the time of naming, it was thePeople'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 theMinor Planet Center on 13 July 1984 (M.P.C. 8912).[10]
