250 Bettina
main-belt asteroid
250 Bettina is a large main belt asteroid that was discovered by Austrian astronomer Johann Palisa on September 3, 1885, in Vienna. It was named in honour of Baroness Bettina von Rothschild (née de Rothschild; 1858–1892), wife of Baron Albert von Rothschild who had bought the naming rights for £50. Based upon the spectrum, it is classified as an M-type asteroid.
In 1988, the asteroid was observed from the Collurania-Teramo Observatory, allowing a light curve to be produced that showed "an irregular behavior with a deeper minimum and a narrower maximum". The data showed a rotation period of 5.055 hours and a brightness variation of 0.17 ± 0.01 in magnitude. The ratio of the lengths of the major to minor axes for this asteroid were found to be 1.51 ± 0.03.
“250 Bettina” enters the record as main-belt asteroid. Crown Archives preserves that source wording while asking what Bettina, main-belt and asteroid can confirm, complicate or overturn.
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This entry incorporates text from “250 Bettina” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.