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I am currently engaged in work on a crude space-flight simulation 
program.  At this point the program can depict the earth as seen from 
particular orbits, utilizing earth surface-feature data from the 
"Micro World Database" which has been distributed publicly.  

I would like to have similar data on the moon and planets (at least 
planets about whose surface features much is known).  If anyone on 
the net has access to this sort of information (legitimately 
available, I'd be greatly interested).  Some parameters follow: 

(a) I can translate a number of different data formats, 
but I will eventually want the data in ASCII-readable form, 
since it will be utilized on both Unix-based and PC-style 
computers, with significant differences in their binary data
formats.  

(b) I am looking for mappings of surface features such as maria,
craters, large-scale mountain ranges, rilles, and the like.  

(c) The data needs to be indexed according to latitude and 
longitude coordinates.  

(d) The data should preferably take the form of l-l coordinates 
for points to be connected in lines, with some form of code 
indicating what type of surface features the lines indicate.  

(e) For my purposes, I need rather low-resolution data.  
The earth coordinates I use include only continental and 
island coastlines, and amount to about 2000 l-l points.  
Large-scale databases would have to be scaled down, and 
so some form of prioritization of coordinates would be 
helpful in larger databases.  

I'd also be interested in knowing if other similar projects
are underway (or have been completed).  I'll appreciate 
any help or advice.  

Ted A. Campbell
Duke University
Durham, NC

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