Astronomy:15460 Manca
| Discovery[1] | |
|---|---|
| Discovered by | A. Boattini L. Tesi |
| Discovery site | San Marcello Pistoiese Obs. |
| Discovery date | 25 December 1998 |
| Designations | |
| (15460) Manca | |
| Named after | Francesco Manca (Italian astronomer)[2] |
| 1998 YD10 · 1994 ET1 | |
| Minor planet category | main-belt · Koronis[3] |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 66.30 yr (24,216 days) |
| |{{{apsis}}}|helion}} | 3.1671 AU |
| |{{{apsis}}}|helion}} | 2.6460 AU |
| 2.9065 AU | |
| Eccentricity | 0.0896 |
| Orbital period | 4.96 yr (1,810 days) |
| Mean anomaly | 316.30° |
| Mean motion | 0° 11m 56.04s / day |
| Inclination | 3.2872° |
| Longitude of ascending node | 92.423° |
| 320.81° | |
| Physical characteristics | |
| Dimensions | 5.17 km (calculated)[3] 5.354±0.315 km[4][5] |
| Rotation period | 7.2723±0.0209 h[6] |
| Geometric albedo | 0.24 (assumed)[3] 0.2949±0.0586[4] 0.295±0.059[5] |
| X[7] · S[3] | |
| Absolute magnitude (H) | 12.97±0.29[7] · 13.3[4] · 13.6[1][3] · 14.114±0.005 (S)[6] |
15460 Manca, provisional designation 1998 YD10, is a Koronian asteroid from the outer region of the asteroid belt, approximately 5 kilometers in diameter.
The asteroid was discovered on 25 December 1998, by Italian astronomers Andrea Boattini and Luciano Tesi at Pistoia Mountains Astronomical Observatory in San Marcello Pistoiese, central Italy.[8] It was named for Italian amateur astronomer Francesco Manca.[2]
Orbit and classification
Manca belongs to the Koronis family, a family of stony asteroids in the outer main-belt with nearly ecliptical orbits. It orbits the Sun at a distance of 2.6–3.2 AU once every 4 years and 12 months (1,810 days). Its orbit has an eccentricity of 0.09 and an inclination of 3° with respect to the ecliptic.[1]
The asteroid's observation arc begins 48 years prior to its official discovery observation, with a precovery taken at the Palomar Observatory in March 1950.[8]
Physical characteristics
Manca has also been characterized as an X-type asteroid by Pan-STARRS' photometric survey.[7]
Rotation period
In August 2012, a rotational lightcurve was obtained for Manca from photometric observations made at the Palomar Transient Factory, California. It gave it a rotation period of 7.2723 hours with a brightness variation of 0.22 magnitude ({{{1}}}).[6]
Diameter and albedo
According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Manca measures 5.35 kilometers in diameter and its surface has an albedo of 0.295.[4][5] The Collaborative Asteroid Lightcurve Link assumes a stony standard albedo for members of the Koronis family of 0.24, and calculates a diameter of 5.17 kilometers with an absolute magnitude of 13.6.[3]
Naming
This minor planet was named for Italian amateur astronomer Francesco Manca (born 1966), member of the "Gruppo Astrofili Brianza" and an active observer of near-Earth objects, and potentially hazardous asteroids in particular, at Sormano Astronomical Observatory in northern Italy.[2] The official naming citation was published by the Minor Planet Center on 13 October 2000 (M.P.C. 41388).[9]
References
- ↑ 1.0 1.1 1.2 1.3 "JPL Small-Body Database Browser: 15460 Manca (1998 YD10)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2015460.
- ↑ 2.0 2.1 2.2 Schmadel, Lutz D. (2007). "(15460) Manca". Dictionary of Minor Planet Names – (15460) Manca. Springer Berlin Heidelberg. p. 825. doi:10.1007/978-3-540-29925-7_9147. ISBN 978-3-540-00238-3.
- ↑ 3.0 3.1 3.2 3.3 3.4 3.5 "LCDB Data for (15460) Manca". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=15460%7CManca.
- ↑ 4.0 4.1 4.2 4.3 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. doi:10.1088/0004-637X/741/2/90. Bibcode: 2011ApJ...741...90M.
- ↑ 5.0 5.1 5.2 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Dailey, J. et al. (November 2011). "Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters". The Astrophysical Journal 741 (2): 20. doi:10.1088/0004-637X/741/2/68. Bibcode: 2011ApJ...741...68M. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011ApJ...741...68M. Retrieved 5 November 2016.
- ↑ 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 5 November 2016.
- ↑ 7.0 7.1 7.2 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 5 November 2016.
- ↑ 8.0 8.1 "15460 Manca (1998 YD10)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=15460.
- ↑ "MPC/MPO/MPS Archive". Minor Planet Center. https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html.
External links
- Asteroid Lightcurve Database (LCDB), query form (info )
- Dictionary of Minor Planet Names, Google books
- Minor Planet (15460) Manca, animation of CCD images
- Sormano Astronomical Observatory, IAU code 587
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (15001)-(20000) – Minor Planet Center
- 15460 Manca at AstDyS-2, Asteroids—Dynamic Site
- 15460 Manca at the JPL Small-Body Database
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