1112 Polonia
| Discovery U–B = 0.447[4] | |
|---|---|
| 10.05[4][6][7][8][10] | |
1112 Polonia, provisional designation 1928 PE, is an
Discovery
Polonia was first observed as A908 XA at the German
Heidelberg Observatory in December 1908. It was officially discovered on 15 August 1928, by Soviet astronomer Pelageya Shajn at the Simeiz Observatory on the Crimean peninsula.[1] On the following night at Simeis, it was independently discovered by her college Grigory Neujmin.[3] The Minor Planet Center only recognized the first discoverer.[1]
Polonia was Shajn's first discovery; and the first asteroid discovery made by a woman,1 Ceres in 1801 – of more than a thousand minor planet discoveries exclusively made by male astronomers, to an end.
Orbit and classification
Polonia is a core member of the
606),[5][6] the largest asteroid family of the outer main belt consisting of nearly 10,000 asteroids.[13]
It orbits the Sun at a distance of 2.7–3.3
semi-major axis of 3.02 AU). Its orbit has an eccentricity of 0.11 and an inclination of 9° with respect to the ecliptic.[4] The body's observation arc begins with its official discovery observation at Simeiz in 1928.[1]
Physical characteristics
In the
spectral type of the Eoan asteroids.[13]
: 23
Rotation period
In October 2007, a rotational
.Diameter and albedo
According to the surveys carried out by the Infrared Astronomical Satellite
albedo between 0.0763 and 0.1319.[7][8][9][10] The Collaborative Asteroid Lightcurve Link adopts the results obtained by IRAS, that is, an albedo of 0.1319 and a diameter of 35.76 kilometers based on an absolute magnitude of 10.05.[6]
Naming
This
H 104).[3]
Notes
- ^ a b Lightcurve plot of 1(1112) Polonia, Palmer Divide Observatory, B. D. Warner (2007). Rotation period 82.5±0.5 hours with a brightness amplitude of 0.20±0.03 mag. Quality code is 2. Summary figures at the LCDB.
References
- ^ a b c d e f "1112 Polonia (1928 PE)". Minor Planet Center. Retrieved 29 May 2018.
- ^ "Polonia". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)
- ^ ISBN 978-3-540-00238-3.
- ^ a b c d e f g h "JPL Small-Body Database Browser: 1112 Polonia (1928 PE)" (2017-10-29 last obs.). Jet Propulsion Laboratory. Retrieved 29 May 2018.
- ^ a b "Asteroid 1112 Polonia". Small Bodies Data Ferret. Retrieved 29 May 2018.
- ^ a b c d e f "LCDB Data for (1112) Polonia". Asteroid Lightcurve Database (LCDB). Retrieved 29 May 2018.
- ^ Bibcode:2004PDSS...12.....T. Retrieved 22 October 2019.
- ^ )
- ^ S2CID 119293330.
- ^ )
- ^ ISSN 1052-8091.
- ^
- ^ S2CID 119280014.
External links
- Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
- Dictionary of Minor Planet Names, Google books
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- 1112 Polonia at AstDyS-2, Asteroids—Dynamic Site
- 1112 Polonia at the JPL Small-Body Database
