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DBpedia 2016-04

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Matches in DBpedia 2016-04 for { ?s ?p "9826 Ehrenfreund, provisional designation 2114 T-3, is a stony asteroid from the outer region of the asteroid belt, about 7 kilometers in diameter. It was discovered on 16 October 1977, by Dutch astronomer couple Ingrid and Cornelis van Houten at Leiden, on photographic plates taken by Dutch–American astronomer Tom Gehrels at the U.S. Palomar Observatory in California.The S-type asteroid is a member of the Eos family, an orbital group of more than 4,000 asteroids, which are well known for mostly being of stony composition. It orbits the Sun at a distance of 2.7–3.3 AU once every 5 years and 2 months (1,892 days). Its orbit shows an eccentricity of 0.09 and an inclination of 9 degrees from the plane of the ecliptic. A photometric light-curve analysis at the Palomar Transient Factory in 2013 rendered a rotation period of 7000374840000000000♠3.7484±0.0013 hours with a brightness amplitude of 0.37 in magnitude. The Collaborative Asteroid Lightcurve Link calculates a diameter of 6.9 kilometers based on an absolute magnitude of 13.55 and an assumed albedo of 0.14. Although this is a relatively low albedo for a stony asteroid, it is the same albedo as for the Eos family's namesake, the asteroid 221 Eos, which is also classified as a K-type in the SMASS taxonomic scheme.The unusual designation 2114 T-3 stands for a survey made in the search for Jupiter trojans beyond the main-belt. The team of astronomers adopted the same procedure as previously used in their fruitful and much larger Palomar–Leiden survey collaboration of the 1960s, which was named after the involved observatories at Palomar and Leiden. In both surveys, Gehrels used Palomar's Samuel Oschin telescope (also known as the 48-inch Schmidt Telescope), and shipped the photographic plates to Ingrid and Cornelis van Houten at Leiden Observatory, where astrometry was carried out. The trio of astronomers are credited with several thousand asteroid discoveries.The minor planet was named in honour of Austrian female astrophysicist and biochemist, Pascale Ehrenfreund (b. 1960), who qualified as an expert on several space missions investigating dust and organic molecules in space. Ehrenfreund has been the lead investigator at NASA Astrobiology Institute and was elected CEO of the German Aerospace Center in 2015, the first woman to lead a major research facility in Germany."@en }

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