1807 Slovakia
| Discovery [1] | |
|---|---|
| Discovered by | M. Antal |
| Discovery site | Skalnaté Pleso Obs. |
| Discovery date | 20 August 1971 |
| Designations | |
| MPC designation | 1807 Slovakia |
Named after | Slovakia[2] |
|
1971 QA · 1928 UE 1948 UC · 1951 JA 1951 QK · 1954 NA 1960 GB · 1971 TM1 | |
| main-belt · (inner) [3] | |
| Orbital characteristics [1] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 87.40 yr (31922 days) |
| Aphelion | 2.6225 AU (392.32 Gm) |
| Perihelion | 1.8309 AU (273.90 Gm) |
| 2.2267 AU (333.11 Gm) | |
| Eccentricity | 0.17776 |
| 3.32 yr (1213.6 d) | |
| 106.17° | |
| 0° 17m 47.868s / day | |
| Inclination | 3.4872° |
| 236.44° | |
| 140.15° | |
| Earth MOID | 0.832494 AU (124.5393 Gm) |
| Jupiter MOID | 2.84316 AU (425.331 Gm) |
| Jupiter Tisserand parameter | 3.622 |
| Physical characteristics | |
| Dimensions |
9.146±0.059 km[4] 9.40 km (calculated)[3] |
|
308 h[5] 46 h[6] 308.6 h (12.86 d)[1][3] | |
|
0.3058±0.0411[4] 0.20 (assumed)[3] | |
| SMASS = SS [3] | |
| 12.5 | |
|
| |
1807 Slovakia, provisional designation 1971 QA, is a stony asteroid from the inner regions of the asteroid belt. It was discovered on 20 August 1971 by Slovak astronomer Milan Antal at Skalnaté pleso Observatory near Tatranská Lomnica in the High Tatras mountains.[7]
The S-type asteroid orbits the Sun at a distance of 1.8–2.6 AU once every 3 years and 4 months (1,213 days). It has an albedo of 0.20–0.31.[3][4]
The 9-kilometer sized asteroid has an exceptionally long rotation period of 308 hours.[5] Previous observations made by the Geneva observatory in 2003 gave a provisional period of 1.9 days or about 46 hours.[6]
It was named in honor of the now independent state of Slovakia (Slovak Republic), the country where the discovering observatory is located. At the time Slovakia was still part of the socialistic republic of Czechoslovakia that was formed after World War I and lasted until the end of the Cold War (also see 2315 Czechoslovakia).[2]
References
- 1 2 3 "JPL Small-Body Database Browser: 1807 Slovakia (1971 QA)" (2015-10-11 last obs.). Jet Propulsion Laboratory. Retrieved 20 April 2016.
- 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1807) Slovakia. Springer Berlin Heidelberg. p. 145. ISBN 978-3-540-29925-7. Retrieved November 2015.
- 1 2 3 4 5 6 "LCDB Data for (1807) Slovakia". Asteroid Lightcurve Database (LCDB). Retrieved November 2015.
- 1 2 3 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. Retrieved November 2015.
- 1 2 Galad, Adrian; Kornos, Leonard; Husarik, Marek (October 2009). "The Very Long Sidereal Period of 1807 Slovakia". The Minor Planet Bulletin 36 (4): 149–151. Bibcode:2009MPBu...36..149G. ISSN 1052-8091. Retrieved November 2015.
- 1 2 Behrend, Raoul. "Asteroids and comets rotation curves – (1807) Slovakia". Geneva Observatory. Retrieved November 2015.
- ↑ "1807 Slovakia (1971 QA)". Minor Planet Center. Retrieved November 2015.
External links
- Asteroid Lightcurve Database (LCDB), query form (info)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Geneve, Raoul Behrend
- 1807 Slovakia at the JPL Small-Body Database
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