Astronomy:1136 Mercedes

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1136 Mercedes
Discovery[1]
Discovered byJ. Comas Solà
Discovery siteFabra Obs.
Discovery date30 October 1929
Designations
(1136) Mercedes
Named afterMercedes[2]
(discoverer's sister-in-law)
1929 UA · 1966 XB
Minor planet categorymain-belt · (middle)
background[3]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc86.23 yr (31,497 days)
|{{{apsis}}}|helion}}3.2207 AU
|{{{apsis}}}|helion}}1.9111 AU
2.5659 AU
Eccentricity0.2552
Orbital period4.11 yr (1,501 days)
Mean anomaly171.68°
Mean motion0° 14m 23.28s / day
Inclination8.9825°
Longitude of ascending node209.53°
148.49°
Physical characteristics
Dimensions25.23 km (derived)[4]
25.296±0.249 km[5]
26.29±6.21 km[6]
26.349±0.078 km[7]
26.66±0.28 km[8]
33.19±6.54 km[9]
Rotation period6.448±0.002 h[10]
15.6 h (poor)[11]
24.64±0.01 h[12]
Geometric albedo0.05±0.04[9]
0.08±0.06[6]
0.084±0.015[5]
0.1007 (derived)[4]
0.1018±0.0230[7]
0.103±0.003[8]
S (assumed)[4]
Absolute magnitude (H)11.00[7][8] · 11.10[4][6] · 11.2[1] · 11.22[9] · 11.68±0.75[13]


1136 Mercedes, provisional designation 1929 UA, is a background asteroid from the central regions of the asteroid belt, approximately 26 kilometers in diameter. It was discovered on 30 October 1929, by Catalan astronomer Josep Comas i Solà at the Fabra Observatory in Barcelona, Spain.[14] The asteroid was named for the sister-in-law of the discoverer.[2]

Orbit and classification

Mercedes is not a member of any known asteroid family and belongs to the belt's background population.[3] It orbits the Sun in the central main-belt at a distance of 1.9–3.2 AU once every 4 years and 1 month (1,501 days). Its orbit has an eccentricity of 0.26 and an inclination of 9° with respect to the ecliptic.[1] The body's observation arc begins at Yerkes Observatory in March 1931, more than a year after its official discovery observation at Fabra.[14]

Physical characteristics

Mercedes is an assumed S-type asteroid.[4]

Rotation period

The asteroid has an ambiguous rotation period. A lightcurve of Mercedes obtained in 1998, gave a period of 6.448 hours and a brightness variation of 0.10 magnitude ({{{1}}}),[10] while another lightcurve from 2007, gave a much longer period of 24.64 hours with an amplitude of 0.15 ({{{1}}}).[12] A third period of 15.6 hours is considered of poor quality ({{{1}}}).[11]

Diameter and albedo

According to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Mercedes measures between 25.296 and 33.19 kilometers in diameter and its surface has an albedo between 0.05 and 0.103.[5][6][7][8][9]

The Collaborative Asteroid Lightcurve Link derives an albedo of 0.1007 and a diameter of 25.23 kilometers based on an absolute magnitude of 11.1.[4]

Naming

This minor planet was named by Josep Comas i Solà for his sister-in-law, Mercedes. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 106).[2]

References

  1. ↑ 1.0 1.1 1.2 1.3 "JPL Small-Body Database Browser: 1136 Mercedes (1929 UA)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001136. 
  2. ↑ 2.0 2.1 2.2 Schmadel, Lutz D. (2007). "(1136) Mercedes". Dictionary of Minor Planet Names – (1136) Mercedes. Springer Berlin Heidelberg. p. 96. doi:10.1007/978-3-540-29925-7_1137. ISBN 978-3-540-00238-3. 
  3. ↑ 3.0 3.1 "Asteroid 1136 Mercedes – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. https://newton.spacedys.com/astdys/index.php?pc=1.1.6&n=1136. 
  4. ↑ 4.0 4.1 4.2 4.3 4.4 4.5 "LCDB Data for (1136) Mercedes". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=1136%7CMercedes. 
  5. ↑ 5.0 5.1 5.2 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. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2014ApJ...791..121M. Retrieved 9 September 2017. 
  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 9 September 2017. 
  7. ↑ 7.0 7.1 7.2 7.3 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. 
  8. ↑ 8.0 8.1 8.2 8.3 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)
  9. ↑ 9.0 9.1 9.2 9.3 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. 
  10. ↑ 10.0 10.1 Gil-Hutton, R.; Cañ; ada, M. (April 2003). "Photometry of Fourteen Main Belt Asteroids". Revista Mexicana de Astronomía y Astrofísica 39: 69–76. Bibcode: 2003RMxAA..39...69G. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2003RMxAA..39...69G. Retrieved 9 September 2017. 
  11. ↑ 11.0 11.1 Behrend, Raoul. "Asteroids and comets rotation curves – (1136) Mercedes". Geneva Observatory. http://obswww.unige.ch/~behrend/page3cou.html#001136. 
  12. ↑ 12.0 12.1 Brinsfield, James W. (September 2008). "Asteroid Lightcurve Analysis at the Via Capote Observatory: First Quarter 2008". The Minor Planet Bulletin 35 (3): 119–122. ISSN 1052-8091. Bibcode: 2008MPBu...35..119B. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2008MPBu...35..119B. Retrieved 9 September 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 9 September 2017. 
  14. ↑ 14.0 14.1 "1136 Mercedes (1929 UA)". https://www.minorplanetcenter.net/db_search/show_object?object_id=1136. 

External links



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