Phase curve and albedo of asteroid 5535 Annefrank

Seventy‐two images of the S‐class asteroid 5535 Annefrank, acquired on 2 November 2002 at target ranges of 11,415–3078.5 km, were transmitted to Earth as a part of an engineering readiness test of the Stardust mission. Forty‐four of these were used to create a phase curve extending to 134°, the larg...

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Bibliographic Details
Published in:Journal of Geophysical Research. E. Planets 2003-11, Vol.108 (E11), p.3.1-n/a
Main Authors: Newburn Jr, Ray L., Duxbury, Thomas C., Hanner, Martha, Semenov, Boris V., Hirst, Edward E., Bhat, Ramachand S., Bhaskaran, Shyamkumar, Wang, Tseng-Chan M., Tsou, Peter, Brownlee, Donald E., Cheuvront, Allan R., Gingerich, David E., Bollendonk, Gregory R., Vellinga, Joseph M., Parham, Kelly A., Mumaw, Susan J.
Format: Article
Language:English
Subjects:
5535 Annefrank
asteroid albedos
asteroid imaging
asteroid phase curves
asteroid photometry
Earth, ocean, space
Exact sciences and technology
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Summary:Seventy‐two images of the S‐class asteroid 5535 Annefrank, acquired on 2 November 2002 at target ranges of 11,415–3078.5 km, were transmitted to Earth as a part of an engineering readiness test of the Stardust mission. Forty‐four of these were used to create a phase curve extending to 134°, the largest angle yet achieved for any S‐class asteroid. Flux fell by more than six magnitudes between the extrapolated 0° and 134°. A maximum illuminated cross section of 16 km2 was seen at a phase angle of 47.2°. Assuming a camera efficiency of 75%, a broadband (470–940 nm) geometric albedo of 0.24 was derived for Annefrank.
ISSN:0148-0227
2156-2202
DOI:10.1029/2003JE002106