1739 Meyermann, provisional designation 1939 PF, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 7.5 kilometers in diameter. It was discovered by German astronomer Karl ReinmuthatHeidelberg Observatory on 15 August 1939.[8] It was later named in memory of astronomer Bruno Meyermann.[2]
Meyermann is a member of the Flora family, a large group of S-type asteroids in the inner main-belt. It orbits the Sun at a distance of 2.0–2.5 AU once every 3 years and 5 months (1,242 days). Its orbit has an eccentricity of 0.12 and an inclination of 3° with respect to the ecliptic.[1]Meyermann was first identified as 1929 TB1atLowell Observatory in 1929, extending the body's observation arc by 10 years prior to its official discovery observation at Heidelberg.[8]
Two rotational lightcurvesofMeyermann were obtained from photometric observations taken by Czech astronomer Petr Pravec at Ondřejov Observatory in 2007 and 2014. They gave a rotation period of 2.8212 and 2.8219 hours with a brightness variation of 0.12 and 0.17 magnitude, respectively (U=3/3).[a][b]
According to the refitted 2014-results from the survey carried out by the Wide-field Infrared Survey Explorer with its NEOWISE missions, Meyermann measures 7.858 kilometers in diameter, and its surface has an albedo of 0.254.[5] The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – derived from 8 Flora, the largest member and namesake of its family – and calculates a diameter of 7.47 kilometers based on an absolute magnitude of 12.8.[3]
^ abPravec (2014) web: rotation period 2.8212±0.0002 hours with a brightness amplitude of 0.17. Quality Code of 3. Summary figures at Asteroid Lightcurve Database
^ abPravec (2007) web: rotation period 2.8219±0.0002 hours with a brightness amplitude of 0.22. Quality Code of 3. Summary figures at Asteroid Lightcurve Database
^Schmadel, Lutz D. "Appendix – Publication Dates of the MPCs". Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008). Springer Berlin Heidelberg. p. 221. doi:10.1007/978-3-642-01965-4. ISBN978-3-642-01964-7.
