Misplaced Pages

Pawlowia (minor planet designation: 1007 Pawlowia), provisional designation 1923 OX, is a background asteroid from the central regions of the asteroid belt, approximately 20 kilometers in diameter. It was discovered on 5 October 1923, by Soviet astronomer Vladimir Albitsky at the Simeiz Observatory on the Crimean peninsula. The asteroid was named after Russian physiologist and Nobelist Ivan Pavlov.

Orbit and classification

Pawlowia is a non-family asteroid from the main belt's background population. It orbits the Sun in the central asteroid belt at a distance of 2.4–3.0 AU once every 4 years and 5 months (1,627 days; semi-major axis of 2.71 AU). Its orbit has an eccentricity of 0.11 and an inclination of 3° with respect to the ecliptic.

The asteroid was first imaged on a precovery taken at Lowell Observatory in December 1906. The body's observation arc begins at Simeiz on 30 October 1925, or 25 days after its official discovery observation (discovery record not listed).

Physical characteristics

In the SMASS classification, Pawlowia is a K-type asteroid, which are common among members of the Eos family and known for their intermediate albedo.

Rotation period

In September 2003, a tentative rotational lightcurve of Pawlowia was obtained from photometric observations by American Maurice Clark at the Bucknell and Rosemary Hill Observatory in Pennsylvania and Florida, respectively. Analysis of the essentially flat lightcurve gave a poorly rated rotation period of 8.23 hours with a brightness amplitude of at least 0.02 magnitude (U=1). As of 2018, no secure period has been obtained.

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, Pawlowia measures between 18.264 and 24.13 kilometers in diameter and its surface has an albedo between 0.080 and 0.145.

The Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057 and consequently calculates a much larger diameter of 32.03 kilometers based on an absolute magnitude of 11.2.

Naming

This minor planet was named after Russian biologist Ivan Pavlov (1849–1936), who was awarded the Nobel Prize in Physiology or Medicine in 1904 (see list of laureates). Pavlov is best known for his research on classical conditioning (Pavlov's dog).

The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 96). The lunar crater Pavlov was also named in his honor.

References

1. ^ "JPL Small-Body Database Browser: 1007 Pawlowia (1923 OX)" (2017-11-24 last obs.). Jet Propulsion Laboratory. Retrieved 10 January 2018.
2. ^ Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (1007) Pawlowia. Springer Berlin Heidelberg. p. 87. ISBN 978-3-540-00238-3.
3. ^ "Asteroid 1007 Pawlowia – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. Retrieved 24 October 2019.
4. ^ 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. arXiv:1406.6645. Bibcode:2014ApJ...791..121M. doi:10.1088/0004-637X/791/2/121. S2CID 119293330.
5. ^ 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. S2CID 35447010.
6. ^ 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. arXiv:1509.02522. Bibcode:2015ApJ...814..117N. doi:10.1088/0004-637X/814/2/117. S2CID 9341381.
7. ^ 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. arXiv:1606.08923. Bibcode:2016AJ....152...63N. doi:10.3847/0004-6256/152/3/63.
8. ^ 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. Bibcode:2011PASJ...63.1117U. doi:10.1093/pasj/63.5.1117. (online, AcuA catalog p. 153)
9. ^ "LCDB Data for (1007) Pawlowia". Asteroid Lightcurve Database (LCDB). Retrieved 10 January 2018.
10. ^ Clark, Maurice (September 2006). "Lightcurve results for 383 Janina, 899 Jokaste, 1825 Klare, 2525 O'Steen 5064 Tanchozuru, and (17939) 1999 HH8". The Minor Planet Bulletin. 33 (3): 53–56. Bibcode:2006MPBu...33...53C. ISSN 1052-8091.
11. ^ "1007 Pawlowia (1923 OX)". Minor Planet Center. Retrieved 10 January 2018.

External links

• 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
• 1007 Pawlowia at AstDyS-2, Asteroids—Dynamic Site
  • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
• 1007 Pawlowia 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 Vladimir Albitsky
• Named minor planets
• K-type asteroids (SMASS)
• Astronomical objects discovered in 1923