299 Thora is a 17 km Main belt asteroid with a potentially long 274-hour rotation period.[1] It was discovered by Johann Palisa on 6 October 1890 in Vienna.
This object has a very low rate of spin, requiring 11.37 ± 0.04 days (272.9 ± 0.9 h) to complete a full rotation.[2]
References
- ^ a b c d e f "JPL Small-Body Database Browser". JPL. Retrieved 11 May 2016.
- ^ Pilcher, Frederick; et al. (July 2017). "299 Thora and 496 Gryphia: Two More Very Slowly Rotating Asteroids". Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers. 44 (3): 270–274. Bibcode:2017MPBu...44..270P.
External links
- 299 Thora at AstDyS-2, Asteroids—Dynamic Site
- 299 Thora at the JPL Small-Body Database
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