Astronomy:12482 Pajka
| Discovery[1] | |
|---|---|
| Discovered by | A. Galád A. Pravda |
| Discovery site | Modra Obs. |
| Discovery date | 23 March 1997 |
| Designations | |
| (12482) Pajka | |
| Named after | Paula Pravdová (discoverer's daughter)[2] |
| 1997 FG1 | |
| Minor planet category | main-belt · (inner)[3] background |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 24.77 yr (9,048 days) |
| |{{{apsis}}}|helion}} | 2.8060 AU |
| |{{{apsis}}}|helion}} | 2.0264 AU |
| 2.4162 AU | |
| Eccentricity | 0.1613 |
| Orbital period | 3.76 yr (1,372 days) |
| Mean anomaly | 166.06° |
| Mean motion | 0° 15m 44.64s / day |
| Inclination | 8.6213° |
| Longitude of ascending node | 133.39° |
| 30.048° | |
| Physical characteristics | |
| Mean diameter | 4.30 km (calculated)[3] |
| Rotation period | 3.9428±0.0001 h[4] |
| Geometric albedo | 0.20 (assumed)[3] |
| S (assumed)[3] | |
| Absolute magnitude (H) | 13.99±0.21[5] 14.2[1][3] |
12482 Pajka, provisional designation 1997 FG1, is a background asteroid from the inner regions of the asteroid belt, approximately 4.3 kilometers in diameter. It was discovered by Slovak astronomers Adrián Galád and Alexander Pravda at Modra Observatory on 23 March 1997.[6] It was named after Paula Pravdová ("Pajka"), the daughter of the second discoverer.[2]
Orbit and classification
Pajka is a non-family asteroid from the main belt's background population. It orbits the Sun in the inner asteroid belt at a distance of 2.0–2.8 AU once every 3 years and 9 months (1,372 days). Its orbit has an eccentricity of 0.16 and an inclination of 9° with respect to the ecliptic.[1]
The body's observation arc begins 6 years prior to its official discovery observation, with a precovery taken at Steward Observatory (Kitt Peak–Spacewatch) in October 1991.[6]
Naming
This minor planet was named after Paula Pravdová (born 1990), whose familiar name is "Pajka". She is the daughter of the discovering astronomer Alexander Pravda and often visited Modra Observatory.[2] The official naming citation was published by the Minor Planet Center on 28 March 2002 (M.P.C. 45234).[7]
Physical characteristics
A rotational lightcurve of Pajka was obtained from photometric observations made by the discovering astronomer at Modra Observatory in January 2008. The lightcurve showed a rotation period of 3.9428 hours with a brightness amplitude of 0.21 in magnitude ({{{1}}}).[4] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 4.3 kilometers with an absolute magnitude of 14.2.[3]
References
- ↑ 1.0 1.1 1.2 1.3 "JPL Small-Body Database Browser: 12482 Pajka (1997 FG1)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012482. Retrieved 24 June 2017.
- ↑ 2.0 2.1 2.2 Schmadel, Lutz D. (2007). "(12482) Pajka". Dictionary of Minor Planet Names – (12482) Pajka. Springer Berlin Heidelberg. p. 783. doi:10.1007/978-3-540-29925-7_8612. ISBN 978-3-540-00238-3.
- ↑ 3.0 3.1 3.2 3.3 3.4 3.5 "LCDB Data for (12482) Pajka". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=12482%7CPajka. Retrieved 19 May 2016.
- ↑ 4.0 4.1 Galad, Adrian; Kornos, Leonard (October 2008). "A Collection of Lightcurves from Modra: 2007 December- 2008 June". The Minor Planet Bulletin 35 (4): 144–146. ISSN 1052-8091. Bibcode: 2008MPBu...35..144G. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2008MPBu...35..144G. Retrieved 19 May 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 19 May 2016.
- ↑ 6.0 6.1 "12482 Pajka (1997 FG1)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=12482. Retrieved 19 May 2016.
- ↑ "MPC/MPO/MPS Archive". Minor Planet Center. https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html. Retrieved 19 May 2016.
External links
- (12482) Pajka at AstDyS, University of Pisa
- 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 (10001)-(15000) – Minor Planet Center
- 12482 Pajka at AstDyS-2, Asteroids—Dynamic Site
- 12482 Pajka at the JPL Small-Body Database
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