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Results of TV imaging of Phobos (experiment VSK-FREGAT)

Avanesov, G. and Murray, B. and Herkenhoff, K. (1991) Results of TV imaging of Phobos (experiment VSK-FREGAT). Planetary and Space Science, 39 (1-2). pp. 281-295. ISSN 0032-0633. https://resolver.caltech.edu/CaltechAUTHORS:20140410-093610366

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Abstract

From February to March 1989 the Phobos 2 spacecraft took 37 TV images of Phobos at a distance of 190–1100 km. These images complement Mariner-9 and Viking data by providing higherresolution coverage of a large region West of the crater Stickney (40–160°W) and by providing disk-resolved measurements of surface brightness at a greater range of wavelengths and additional phase angles. These images have supported updated mapping and characterization of large craters and grooves, and have provided additional observations of craters' and grooves' bright rims. Variations in surface visible/nearinfrared color ratio of almost a factor of 2 have been recognized ; these variations appear to be associated with the ejecta of specific large impact craters. Updated determinations of satellite mass and volume allow calculation of a more accurate value of bulk density, 1.90 ± 0.1 g cm^(−3). This is significantly lower than the density of meteoritic analogs to Phobos' surface, suggesting a porous interior perhaps containing interstitial ice.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1016/0032-0633(91)90150-9DOIArticle
http://www.sciencedirect.com/science/article/pii/0032063391901509PublisherArticle
ORCID:
AuthorORCID
Herkenhoff, K.0000-0002-3153-6663
Additional Information:© 1991 Pergamon Press. Received 4 July 1990.
Issue or Number:1-2
Record Number:CaltechAUTHORS:20140410-093610366
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20140410-093610366
Official Citation:G. Avanesov, B. Zhukov, Ya. Ziman, V. Kostenko, A. Kuzmin, V. Murav'ev, V. Fedotov, B. Bonev, D. Mishev, D. Petkov, A. Krumov, S. Simeonov, V. Boycheva, Yu. Uzunov, G.-G. Weide, D. Halmann, W. Pössel, J. Head, S. Murchie, Yu.G. Schkuratov, R. Berghänel, M. Danz, T. Mangoldt, U. Pihan, U. Weidlich, K. Lumme, K. Muinonen, J. Peltoniemi, T. Duxbury, B. Murray, K. Herkenhoff, F. Fanale, W. Irvine, B. Smith, Results of TV imaging of phobos (experiment VSK-FREGAT), Planetary and Space Science, Volume 39, Issues 1–2, January–February 1991, Pages 281-295, ISSN 0032-0633, http://dx.doi.org/10.1016/0032-0633(91)90150-9. (http://www.sciencedirect.com/science/article/pii/0032063391901509)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:44847
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:10 Apr 2014 16:51
Last Modified:03 Oct 2019 06:23

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