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- From: martin@space.ualberta.ca (Martin Connors)
- Subject: Re: Toutatis Images Available
- Message-ID: <1993Jan11.212144.10367@kakwa.ucs.ualberta.ca>
- Sender: news@kakwa.ucs.ualberta.ca
- Nntp-Posting-Host: jupiter.space.ualberta.ca
- Reply-To: martin@space.ualberta.ca (Martin Connors)
- Organization: University Of Alberta, Edmonton Canada
- References: <1993Jan5.160744.7305@unocal.com>
- Date: Mon, 11 Jan 1993 21:21:44 GMT
- Lines: 26
-
- In article <1993Jan5.160744.7305@unocal.com> stgprao@st.unocal.COM
- (Richard Ottolini) writes:
- > What is the cell resolution of the radar images in meters and
- > what are the factors limiting this resolution?
- Please see the Ostro abstract which is the second mentioned in this
- excerpt>>>>
- Images of minor planet 951 Gaspra returned by the Galileo spacecraft have
- shown a heavily cratered surface whose crater density approaches
- equilibrium or saturation (the state in which new impacts remove old
- craters at the rate new ones are produced) for the smallest resolvable
- craters (1) which are 100m in diameter. .... Apollo-class 4179 Toutatis
- .. makes a close approach to Earth on 8 December 1992. ... Radar
- investigations (2) should provide similar information about crater density
- as is now known for Gaspra.
- 1. Chapman, C. R. & the Galileo Imaging Team Bull. Am. astr. Soc., 24,
- 931-932 (1992).
- 2. Ostro, S. J. Bull. Am. astr. Soc., 24, 934 (1992).
- <<<<<<<
- So basically Ostro hopes to get 100m craters. I have asked around and been
- told that the data inversion is both difficult and iterative, thus will
- get better results 'later'. I imagine most of the small stuff being seen
- right now is not real....
- --
- Martin Connors |
- Space Research | martin@space.ualberta.ca (403) 492-2526
- University of Alberta |
-