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3099 Hergenrother, provisional designation 1940 GF, is an asteroid from the outer region of the asteroid belt, approximately 15 kilometers in diameter. It was discovered on 3 April 1940, by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland, and named after American astronomer Carl Hergenrother in 1996.

Orbit and classification

Hergenrother orbits the Sun in the outer main-belt at a distance of 2.3–3.5 AU once every 4 years and 11 months (1,786 days). Its orbit has an eccentricity of 0.20 and an inclination of 15° with respect to the ecliptic. The body's observation arc begins 6 days after its official discovery observation at Turku.

Physical characteristics

Rotation period

In January 2008, a rotational lightcurve of Hergenrother was obtained from photometric observations by French amateur astronomer Pierre Antonini. Lightcurve analysis gave a rotation period of 24.266 hours with a brightness variation of 0.28 magnitude (U=2).

Diameter and albedo

According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Hergenrother measures 14.73 kilometers in diameter and its surface has an albedo of 0.224, while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057 and consequently calculates a diameter of 29.21 kilometers, as the lower the albedo, the larger the body's diameter at a certain absolute magnitude.

Naming

This minor planet was named in honor of American astronomer Carl W. Hergenrother (born 1973). At Lunar and Planetary Laboratory, he has been a discoverer of minor planets with high inclinations during the Bigelow Sky Survey, precursor to the Catalina Sky Survey. The naming was proposed by MPC director Brian G. Marsden among others. The official naming citation was published by the Minor Planet Center on 3 May 1996 (M.P.C. 27124).

References

1. ^ "JPL Small-Body Database Browser: 3099 Hergenrother (1940 GF)" (2017-03-21 last obs.). Jet Propulsion Laboratory. Retrieved 16 June 2017.
2. ^ Schmadel, Lutz D. (2007). "(3099) Hergenrother". Dictionary of Minor Planet Names – (3099) Hergenrother. Springer Berlin Heidelberg. p. 255. doi:10.1007/978-3-540-29925-7_3100. ISBN 978-3-540-00238-3.
3. ^ "LCDB Data for (3099) Hergenrother". Asteroid Lightcurve Database (LCDB). Retrieved 8 March 2017.
4. ^ 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. arXiv:1109.6407. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90.
5. ^ 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. arXiv:1109.4096. Bibcode:2011ApJ...741...68M. doi:10.1088/0004-637X/741/2/68. Retrieved 8 March 2017.
6. ^ Behrend, Raoul. "Asteroids and comets rotation curves – (3099) Hergenrother". Geneva Observatory. Retrieved 8 March 2017.
7. ^ "3099 Hergenrother (1940 GF)". Minor Planet Center. Retrieved 8 March 2017.
8. "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 8 March 2017.

External links

• Get to Know a Staff Scientist: Carl Hergenrother, Lunar & Planetary Laboratory, University of Arizona
• 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 (1)-(5000) – Minor Planet Center
• 3099 Hergenrother at AstDyS-2, Asteroids—Dynamic Site
  • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
• 3099 Hergenrother at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit viewer · Orbit parameters · Physical parameters

• Minor planet object articles (numbered)
• Background asteroids
• Discoveries by Yrjö Väisälä
• Named minor planets
• Astronomical objects discovered in 1940