Main-belt asteroid
94 Aurora is one of the largest main-belt asteroids . With an albedo of only 0.04, it is darker than soot , and has a primitive composition consisting of carbonaceous material. It was discovered by J. C. Watson on September 6, 1867, in Ann Arbor , and named after Aurora , the Roman goddess of the dawn .
This asteroid is orbiting the Sun with a period of 5.62 years and a relatively low eccentricity of 0.092. It is spinning with a rotation period of 7.22 hours. Observations of an occultation using nine chords indicate an oval outline of 225×173 km.[ 4] pole of rotation lies just 4–16° away from the plane of the ecliptic .[ 7]
Notes
^ Assuming a diameter of 196 ± 4 km.
References
^ "aurora" Oxford English Dictionary Oxford University Press .(Subscription or participating institution membership required.) ^ "aurorean" Oxford English Dictionary Oxford University Press .(Subscription or participating institution membership required.) ^ a b c d e f "JPL Small-Body Database Browser: 94 Aurora" (2008-11-09 last obs). Retrieved 13 May 2016 .^ a b "Occultation of TYC 6910-01938-1 by (94) Aurora - 2001 October 12" . Royal Astronomical Society of New Zealand . Archived from the original on 19 February 2012. Retrieved 30 November 2008 .(Chords) Archived 2008-10-21 at the Wayback Machine ^ a b Fienga, A.; Avdellidou, C.; Hanuš, J. (February 2020). "Asteroid masses obtained with INPOP planetary ephemerides" . Monthly Notices of the Royal Astronomical Society . 492 (1). doi :10.1093/mnras/stz3407 ^ Asteroid Data Sets Archived 2009-12-17 at the Wayback Machine ^ Marciniak, A.; et al. (May 2011), "Photometry and models of selected main belt asteroids. VIII. Low-pole asteroids", Astronomy & Astrophysics , 529 : 14, Bibcode :2011A&A...529A.107M , doi :10.1051/0004-6361/201015365
External links
Mean diameter 900–1000 km Mean diameter 500–600 km Mean diameter 300–500 km Mean diameter 200–300 km
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