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Born on this day
Mario Vargas Llosa
Jorge Mario Pedro Vargas Llosa, 1st Marquis of Vargas Llosa (born March 28, 1936) is a Peruvian-Spanish writer, politician, journalist, essayist, and recipient of the 2010 Nobel Prize in Literature.
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28 March 2023

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Heinrich Wilhelm Matthäus Olbers discovers 2 Pallas, the second asteroid known to man.28.3.1802

Wikipedia (24 Mar 2013, 19:38)
Heinrich Wilhelm Matthäus Olbers discovers 2 Pallas, the second asteroid known to man.

Pallas, minor-planet designation 2 Pallas, is the second asteroid to have been discovered (after Ceres), and one of the largest in the Solar System. It is estimated to comprise 7% of the mass of the asteroid belt, and its diameter of 544 kilometres (338 mi) is slightly larger than that of 4 Vesta. It is however 10–30% less massive than Vesta, placing it third among the asteroids. It is possibly the largest irregularly shaped body in the Solar System (that is, the largest body not rounded under its own gravity)[not verified in body], and a remnant protoplanet.

When Pallas was discovered by astronomer Heinrich Wilhelm Matthäus Olbers on March 28, 1802, it was counted as a planet, as were other asteroids in the early 19th century. The discovery of many more asteroids after 1845 eventually led to their re-classification.

The Palladian surface appears to be a silicate material; the surface spectrum and estimated density resemble carbonaceous chondrite meteorites. The Palladian orbit, at 34.8°, is unusually highly inclined to the plane of the asteroid belt, and the orbital eccentricity is nearly as large as that of Pluto, making Pallas relatively inaccessible to spacecraft.

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