Astronomy:1258 Sicilia

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1258 Sicilia
Discovery[1]
Discovered byK. Reinmuth
Discovery siteHeidelberg Obs.
Discovery date8 August 1932
Designations
(1258) Sicilia
Pronunciation/sɪˈsɪliə/[5]
Named afterSicily (Italian island)[2]
1932 PG · 1935 BG
Minor planet categorymain-belt · (outer)[3]
background[4]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc85.22 yr (31,128 days)
|{{{apsis}}}|helion}}3.3218 AU
|{{{apsis}}}|helion}}3.0484 AU
3.1851 AU
Eccentricity0.0429
Orbital period5.68 yr (2,076 days)
Mean anomaly304.82°
Mean motion0° 10m 24.24s / day
Inclination7.7022°
Longitude of ascending node299.61°
77.861°
Physical characteristics
Dimensions36.83±13.91 km[6]
41.94±12.35 km[7]
44.39 km (derived)[3]
44.47±2.4 km[8]
44.86±0.75 km[9]
45.669±0.174 km[10]
52.529±0.192 km[11]
Rotation period13.500±0.003 h[12]
Geometric albedo0.0369±0.0037[11]
0.0470 (derived)[3]
0.050±0.009[10]
0.056±0.002[9]
0.0564±0.007
0.06±0.04[7]
0.07±0.05[6]
C (assumed)[3]
Absolute magnitude (H)10.50[8][9] · 10.60[6][11] · 10.7[1][3] · 10.77[7] · 10.89±0.32[13]


1258 Sicilia, provisional designation 1932 PG, is a dark background asteroid from the outer regions of the asteroid belt, approximately 44 kilometers in diameter. It was discovered on 8 August 1932, by astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in southwest Germany.[14] The asteroid was named after the Italian island of Sicily.[2]

Orbit and classification

Sicilia is a non-family asteroid of the main belt's background population.[4] It orbits the Sun in the outer asteroid belt at a distance of 3.0–3.3 AU once every 5 years and 8 months (2,076 days; semi-major axis of 3.19 AU). Its orbit has an eccentricity of 0.04 and an inclination of 8° with respect to the ecliptic.[1] The body's observation arc begins with its official discovery observation at Heidelberg in 1932.[14]

Physical characteristics

Sicilia is an assumed carbonaceous C-type asteroid.[3]

Rotation period

In May 2010, a first rotational lightcurve of Sicilia was obtained from photometric observations by astronomers at the Oakley Southern Sky Observatory (E09) in Australia. Lightcurve analysis gave a rotation period of 13.500 hours with a brightness amplitude of 0.19 magnitude ({{{1}}}).[12]

Diameter and albedo

According to the surveys carried out by the Japanese Akari satellite, the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, and the Infrared Astronomical Satellite IRAS, Sicilia measures between 36.83 and 52.529 kilometers in diameter and its surface has an albedo between 0.0369 and 0.07.[6][8][7][9][10][11]

The Collaborative Asteroid Lightcurve Link largely agrees with IRAS and derives an albedo of 0.0470 and a diameter of 44.39 kilometers based on an absolute magnitude of 10.7.[3]

Naming

This minor planet was named after the Italian island of Sicily in the Mediterranean Sea. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 116).[2]

References

  1. ↑ 1.0 1.1 1.2 1.3 "JPL Small-Body Database Browser: 1258 Sicilia (1932 PG)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001258. Retrieved 30 November 2017. 
  2. ↑ 2.0 2.1 2.2 Schmadel, Lutz D. (2007). "(1258) Sicilia". Dictionary of Minor Planet Names – (1258) Sicilia. Springer Berlin Heidelberg. p. 104. doi:10.1007/978-3-540-29925-7_1259. ISBN 978-3-540-00238-3. 
  3. ↑ 3.0 3.1 3.2 3.3 3.4 3.5 3.6 "LCDB Data for (1258) Sicilia". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=1258%7CSicilia. Retrieved 30 November 2017. 
  4. ↑ 4.0 4.1 "Asteroid 1258 Sicilia – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. https://newton.spacedys.com/astdys/index.php?pc=1.1.6&n=1258. 
  5. ↑ Sicilian (3rd ed.), Oxford University Press, September 2005, http://oed.com/search?searchType=dictionary&q=Sicilian  (Subscription or UK public library membership required.)
  6. ↑ 6.0 6.1 6.2 6.3 Nugent, C. R.; Mainzer, A.; Masiero, J.; Bauer, J.; Cutri, R. M.; Grav, T. et al. (December 2015). "NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos". The Astrophysical Journal 814 (2): 13. doi:10.1088/0004-637X/814/2/117. Bibcode: 2015ApJ...814..117N. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015ApJ...814..117N. Retrieved 30 November 2017. 
  7. ↑ 7.0 7.1 7.2 7.3 Nugent, C. R.; Mainzer, A.; Bauer, J.; Cutri, R. M.; Kramer, E. A.; Grav, T. et al. (September 2016). "NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos". The Astronomical Journal 152 (3): 12. doi:10.3847/0004-6256/152/3/63. Bibcode: 2016AJ....152...63N. 
  8. ↑ 8.0 8.1 8.2 Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System 12: IRAS-A-FPA-3-RDR-IMPS-V6.0. Bibcode: 2004PDSS...12.....T. https://sbnarchive.psi.edu/pds3/iras/IRAS_A_FPA_3_RDR_IMPS_V6_0/data/diamalb.tab. Retrieved 22 October 2019. 
  9. ↑ 9.0 9.1 9.2 9.3 Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan 63 (5): 1117–1138. doi:10.1093/pasj/63.5.1117. Bibcode: 2011PASJ...63.1117U.  (online, AcuA catalog p. 153)
  10. ↑ 10.0 10.1 10.2 Masiero, Joseph R.; Grav, T.; Mainzer, A. K.; Nugent, C. R.; Bauer, J. M.; Stevenson, R. et al. (August 2014). "Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos". The Astrophysical Journal 791 (2): 11. doi:10.1088/0004-637X/791/2/121. Bibcode: 2014ApJ...791..121M. 
  11. ↑ 11.0 11.1 11.2 11.3 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. 
  12. ↑ 12.0 12.1 Pligge, Zachary; Monnier, Adam; Pharo, John; Stolze, Kellen; Yim, Arnold; Ditteon, Richard (January 2011). "Asteroid Lightcurve Analysis at the Oakley Southern Sky Observatory: 2010 May". The Minor Planet Bulletin 38 (1): 5–7. ISSN 1052-8091. Bibcode: 2011MPBu...38....5P. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011MPBu...38....5P. Retrieved 30 November 2017. 
  13. ↑ 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 30 November 2017. 
  14. ↑ 14.0 14.1 "1258 Sicilia (1932 PG)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=1258. Retrieved 30 November 2017. 

External links



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