762 Pulcova
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762 Pulcova is a main-belt asteroid. It was discovered by Grigoriy N. Neujmin in 1913,[1] and is named after Pulkovo Observatory, near Saint Petersburg. Pulcova is 137 km in diameter,[1] and is a C-type asteroid, which means that it is dark in colouring with a carbonate composition.
Photometric observations of this asteroid from Leura, Australia during 2006 gave a light curve with a period of 5.8403 ± 0.0005 hours and a brightness variation of 0.20 ± 0.02 in magnitude. This result is in agreement with previous studies.[2]
Satellite
On February 22, 2000,[3] astronomers at the Canada–France–Hawaii Telescope on Mauna Kea, Hawaii, discovered a 15-km moon (roughly a tenth the size of the primary)[4] orbiting Pulcova at a distance of 800 km.[5] Its orbital period is 4 days.[6] The satellite is about 4 magnitudes fainter than the primary.[5] It was one of the first asteroid moons to be identified.
Density
In the year 2000, Merline estimated Pulcova to have a density of 1.8 g/cm3, which would make it more dense than the triple asteroid 45 Eugenia, and binary 90 Antiope.[5] But estimates by Marchis in 2008 suggest a density of only 0.90 g/cm3,[7] suggesting it may be a loosely packed rubble pile, not a monolithic object.
References
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- ↑ Script error: No such module "citation/CS1". (mentions both 90 Antiope and 762 Pulcova)
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External links
- Asteroids with Satellites, Robert Johnston, johnstonsarchive.net
- Template:AstDys
- Template:PAGENAMEBASE at the JPL Small-Body DatabaseTemplate:EditAtWikidata
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