Astronomy:31249 Renéefleming

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31249 Renéefleming
Discovery [1]
Discovered byODAS
Discovery siteCERGA Obs.
Discovery date27 February 1998
Designations
(31249) 1998 DF14
Named afterRenée Fleming 
(American soprano)
1998 DF14 · 1992 FU3
1993 OC11
Minor planet categorymain-belt [1] · (outer) [2][3]
Zhongguo [4] · 2:1 res [5]
Orbital characteristics [2]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 0
Observation arc23.14 yr (8,453 d)
|{{{apsis}}}|helion}}4.1082 AU
|{{{apsis}}}|helion}}2.3852 AU
3.2467 AU
Eccentricity0.2654
Orbital period5.85 yr (2,137 d)
Mean anomaly165.56°
Mean motion0° 10m 6.6s / day
Inclination1.5766°
Longitude of ascending node96.933°
86.472°
Physical characteristics
Mean diameter6.08 km (calculated)[3]
6.973±0.083 km[6][7]
Rotation period3.34±0.04 h[8]
Geometric albedo0.053±0.011[6][7]
0.057 (assumed)[3]
C (assumed)[3]
Absolute magnitude (H)14.36±0.08 (R)[8]
14.4[1][2]
14.6[7]
14.81[3]
14.84[9]


31249 Renéefleming (provisional designation 1998 DF14) is a dark Zhongguo asteroid from the outermost region of the asteroid belt, approximately 7 kilometers (4 miles) in diameter. It was discovered on 27 February 1998, by astronomers with the ODAS survey conducted at the CERGA Observatory near Caussols, France.[1] The presumed C-type asteroid has a short rotation period of 3.34 hours.[3] It was named for American soprano Renée Fleming.[1]

Orbit and classification

Renéefleming is a non-family asteroid from the main belt's background population,[5][10] and a member of the small group of Zhongguo asteroids,[4] located in the Hecuba gap and locked in a 2:1 mean-motion resonance with the gas giant Jupiter. Contrary to the nearby Griqua group, the orbits of the Zhongguos are stable over half a billion years.[4]

It orbits the Sun in the outer main-belt at a distance of 2.4–4.1 AU once every 5 years and 10 months (2,137 days; semi-major axis of 3.25 AU). Its orbit has an eccentricity of 0.27 and an inclination of 2° with respect to the ecliptic.[2] The body's observation arc begins with its first observations at Mount Wilson Observatory in April 1934, almost 64 years prior to its official discovery observation at Caussols.[1]

Physical characteristics

Renéefleming is an assumed C-type asteroid,[3] which agrees with the body's albedo (see below).

Rotation period

In December 2014, a rotational lightcurve of Renéefleming was obtained from photometric observations in the R-band by astronomers at the Palomar Transient Factory in California. Lightcurve analysis gave a short rotation period of 3.34 hours with a brightness amplitude of 0.12 magnitude ({{{1}}}).[8]

Diameter and albedo

According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Renéefleming measures 6.973 kilometers in diameter and its surface has an albedo of 0.053,[6][7] while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for a carbonaceous asteroid of 0.057 and calculates a diameter of 6.08 kilometers based on an absolute magnitude of 14.81.[3]

Numbering and naming

This minor planet was numbered by the Minor Planet Center (MPC) on 30 November 2001, after its orbit had sufficiently been secured (M.P.C. 44038).[11] It was named after American soprano Renée Fleming (born 1959) known for her roles in classical operas by Richard Strauss, Mozart, Handel, Verdi and Dvorak, as well as more modern pieces.[1] The official naming citation was published by the MPC on 29 May 2018 (M.P.C. 110615).[11]

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 "31249 Reneefleming (1998 DF14)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=31249. 
  2. ↑ 2.0 2.1 2.2 2.3 "JPL Small-Body Database Browser: 31249 Reneefleming (1998 DF14)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2031249. 
  3. ↑ 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 "LCDB Data for (31249)". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=31249%7C. 
  4. ↑ 4.0 4.1 4.2 Roig, F.; Nesvorný, D.; Ferraz-Mello, S. (September 2002). "Asteroids in the 2 : 1 resonance with Jupiter: dynamics and size distribution [ Erratum: 2002MNRAS.336.1391R ]". Monthly Notices of the Royal Astronomical Society 335 (2): 417–431. doi:10.1046/j.1365-8711.2002.05635.x. Bibcode: 2002MNRAS.335..417R. 
  5. ↑ 5.0 5.1 "Asteroid (31249) Renéefleming – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. https://newton.spacedys.com/astdys/index.php?n=31249&pc=1.1.6. 
  6. ↑ 6.0 6.1 6.2 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. 
  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 Chang, Chan-Kao; Lin, Hsing-Wen (December 2016). "Large Super-fast Rotator Hunting Using the Intermediate Palomar Transient Factory". The Astrophysical Journal Supplement Series 227 (2): 13. doi:10.3847/0067-0049/227/2/20. Bibcode: 2016ApJS..227...20C. 
  9. ↑ 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. 
  10. ↑ "Asteroid 31249 Renéefleming". Small Bodies Data Ferret. https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=31249. 
  11. ↑ 11.0 11.1 "MPC/MPO/MPS Archive". Minor Planet Center. https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html. 

External links



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