13732 Woodall

13732 Woodall, provisional designation 1998 RC₅₆, is a stony Vestian asteroid from the inner regions of the asteroid belt, approximately 4 kilometers in diameter. It was discovered on 14 September 1998, by the Lincoln Near-Earth Asteroid Research (LINEAR) team at Lincoln Laboratory's Experimental Test Site in Socorro, New Mexico.^[7]

13732 Woodall

Discovery[1]
Discovered by	LINEAR
Discovery site	Lincoln Lab ETS
Discovery date	14 September 1998
Designations
MPC designation	(13732) Woodall
Named after	Ashley Renee Woodall (DCYSC)[2]
Alternative designations	1998 RC56 · 1989 EU5 1991 VS13 · 1997 LA16
Minor planet category	main-belt · Vestian[3]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc	27.75 yr (10,135 days)
Aphelion	2.6124 AU
Perihelion	2.1366 AU
Semi-major axis	2.3745 AU
Eccentricity	0.1002
Orbital period (sidereal)	3.66 yr (1,336 days)
Mean anomaly	13.655°
Mean motion	0° 16m 9.84s / day
Inclination	6.0477°
Longitude of ascending node	204.72°
Argument of perihelion	217.49°
Physical characteristics
Dimensions	3.92 km (calculated)[3]
Synodic rotation period	8.2987±0.0005 h[4]
Geometric albedo	0.20 (assumed)[3]
Spectral type	S[3][5] B–V = 0.864±0.147[6] V–R = 0.468±0.068[6]
Absolute magnitude (H)	14.4[1][3] · 15.23±0.10[5]

Orbit and classification

Woodall is a member of the Vesta family, which is named after 4 Vesta, the second-largest asteroid in the main-belt. It orbits the Sun in the inner main-belt at a distance of 2.1–2.6 AU once every 3 years and 8 months (1,336 days). Its orbit has an eccentricity of 0.10 and an inclination of 6° with respect to the ecliptic.^[1] The first precovery was taken at Siding Spring Observatory in 1989, extending the asteroid's observation arc by 9 years prior to its official discovery observation.^[7]

Physical characteristics

Woodall has been characterized as a common S-type asteroid by Pan-STARRS photometric survey.^[5]

A rotational lightcurve was obtained based on photometric observations by Czech astronomer Petr Pravec at the Ondřejov Observatory in September 2009. Lightcurve analysis gave a well-defined rotation period of 8.2987 hours with a brightness amplitude of 0.27 in magnitude (U=3).^[4]

The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 3.9 kilometers with an absolute magnitude of 14.4.^[3]

Naming

This minor planet was named after Ashley Renee Woodall (born 1987) student at the U.S. Austin Academy for Excellence in Garland, Texas. In 2002, she was a finalist of the Discovery Channel Young Scientist Challenge (DCYSC), a science and engineering competition.^[2] The approved naming citation was published by the Minor Planet Center on 21 October 2002 (M.P.C. 46767).^[8]

References

1. "JPL Small-Body Database Browser: 13732 Woodall (1998 RC56)" (2016-11-30 last obs.). Jet Propulsion Laboratory. Retrieved 5 July 2017.
2. Schmadel, Lutz D. (2007). "(13732) Woodall". Dictionary of Minor Planet Names – (13732) Woodall. Springer Berlin Heidelberg. p. 803. doi:10.1007/978-3-540-29925-7_8874. ISBN 978-3-540-00238-3.
3. "LCDB Data for (13732) Woodall". Asteroid Lightcurve Database (LCDB). Retrieved 7 April 2016.
4. Pravec, P.; Vokrouhlický, D.; Polishook, D.; Scheeres, D. J.; Harris, A. W.; Galád, A.; et al. (August 2010). "Formation of asteroid pairs by rotational fission". Nature. 466 (7310): 1085–1088. arXiv:1009.2770. Bibcode:2010Natur.466.1085P. doi:10.1038/nature09315. PMID 20740010. S2CID 4418631.
5. 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. arXiv:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. S2CID 53493339.
6. Ye, Q.-z. (February 2011). "BVRI Photometry of 53 Unusual Asteroids". The Astronomical Journal. 141 (2): 8. arXiv:1011.0133. Bibcode:2011AJ....141...32Y. doi:10.1088/0004-6256/141/2/32. S2CID 119307210.
7. "13732 Woodall (1998 RC56)". Minor Planet Center. Retrieved 7 April 2016.
8. "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 19 May 2016.

External links

• Nature, Formation of asteroid pairs by rotational fission (26 August 2010)
• Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
• 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
• 13732 Woodall at AstDyS-2, Asteroids—Dynamic Site
  • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
• 13732 Woodall at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit viewer · Orbit parameters · Physical parameters