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457 Alleghenia, provisional designation 1900 FJ, is a carbonaceous asteroid from the outer region of the asteroid belt, about 34 kilometers in diameter. It was discovered on 15 September 1900, by German astronomers Max Wolf and Friedrich Schwassmann at Heidelberg Observatory in southern Germany.

The C-type asteroid orbits the Sun at a distance of 2.6–3.6 AU once every 5 years and 5 months (1,987 days). Its orbit is tilted by 13 degrees to the plane of the ecliptic and shows an eccentricity of 0.17. Based on assumptions made by the Collaborative Asteroid Lightcurve Link, the body has a low albedo of 0.06, a typical value for a carbonaceous asteroid. In 2014, photometric light-curve observations at the Los Algarrobos Observatory (OLASU, I38), Uruguay, has given a rotation period of 21.953±0.001 hours with a brightness amplitude of 0.20 in magnitude. It was the last among the first 500 numbered asteroids to have its period measured for the first time (also see 398 Admete).

The minor planet was named by Max Wolf in honor and gratitude of U.S. optician John Brashear at Allegheny in Pennsylvania, who equipped Wolf's new telescope with state of the art optics (lenses for the 16-inch photographic doublet). Some of the finest astronomy equipment of the early 20th century were produced at Allegheny by Brashear. The body was the first discovery Wolf made with his new instrument. Wolf also expressed his gratitude by granting the naming of another of his discoveries to the American optician, who named it 484 Pittsburghia, after his home city. Brashear is also honored by a Martian and a lunar crater. The minor planet 5502 Brashear was later directly named after the famous American astronomer and instrument builder.

See also

• Allegheny Observatory

Notes

1. Original citation by Max Wolf (in German) in 1901 (AN 154, 443): Dem ersten mit meinem neuen Fernrohr entdeckten kleinen Planeten habe ich in meiner Freude über die ausgezeichneten Linsen, die mir mein Freund Brashear in Allegheny dazu geschliffen hat, den Namen Alleghenia gegeben. Dictionary of Minor Planet Names Reference Work Entry for – (457) Alleghenia

References

1. ^ "JPL Small-Body Database Browser: 457 Alleghenia (1900 FJ)" (2015-11-19 last obs.). Jet Propulsion Laboratory. Archived from the original on 3 January 2020. Retrieved 10 May 2016.
2. "Alleghenian". Lexico UK English Dictionary. Oxford University Press. Archived from the original on 22 March 2020.
3. ^ Schmadel, Lutz D. (2003). "(457) Alleghenia". Dictionary of Minor Planet Names – (457) Alleghenia. Springer Berlin Heidelberg. p. 51. doi:10.1007/978-3-540-29925-7_458. ISBN 978-3-540-29925-7.
4. ^ "LCDB Data for (457) Alleghenia". Asteroid Lightcurve Database (LCDB). Retrieved 20 December 2015.
5. ^ Alvarez, Eduardo Manuel; Pilcher, Frederick (January 2015). "Period Determination for 457 Alleghenia: Low Numbered Asteroid with No Previously Known Period". The Minor Planet Bulletin. 42 (1): 30. Bibcode:2015MPBu...42...30A. ISSN 1052-8091.
6. "457 Alleghenia (1900 FJ)". Minor Planet Center. Retrieved 20 December 2015.

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
• 457 Alleghenia at AstDyS-2, Asteroids—Dynamic Site
  • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
• 457 Alleghenia at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit viewer · Orbit parameters · Physical parameters

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• Minor planet object articles (numbered)
• Background asteroids
• Discoveries by Max Wolf
• Discoveries by Friedrich Karl Arnold Schwassmann
• Named minor planets
• Astronomical objects discovered in 1900
• Main-belt-asteroid stubs