1509 Esclangona

1509 Esclangona is a small inner main belt asteroid discovered on December 21, 1938 by André Patry from Nice, France. It is a member of the Hungaria family.cite journal
author=Spratt, Christopher E.
title=The Hungaria group of minor planets
journal=Royal Astronomical Society of Canada, Journal (ISSN 0035-872X)
year=1990
date=April 1990
volume=84
issue=2
pages=123–131
url=http://adsabs.harvard.edu/abs/1990JRASC..84..123S ] Its provisional designation was 1938 YG. It measures 12 km in diameter. It is named after Ernest Esclangon, a French astronomer.

Esclangona has a small moon, provisionally named S/2003 (1509) 1, which measures 4 km in diameter, and orbits 140 km from its parent. This wide separation relative to the pair's size is rather unusual and it is believed that both Esclangona and its moon are ejecta from an asteroidal collision in the past that left the scene as a co-orbiting pair; a similar pairing is 3749 Balam and its moon [http://www.aas.org/publications/baas/v35n4/dps2003/495.htm] .

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