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In order to run xplanet, you'll need at least one map file. Some maps are included in the xplanet-images package.
-arc_file Specify an arc file to be plotted against the background stars. Each line in the file must have the following syntax: dec1 ra1 dec2 ra2 where declination is in degrees and right ascension is in hours. This option has no effect if -projection is specified. -arc_spacing spacing When drawing an arc, draw line segments that are spacing degrees apart. The default is 0.1 degrees. Line s more»
Each line should have the following syntax: lat1 lon1 lat2 lon2 where all values are in degrees. In addition, the keywords "color", "spacing", and "thickness" are supported as in the example below: 33.9 -118.4 52.3 4.8 color=SpringGreen spacing=0.5 thickness=2 # LAX-AMS Valid values for "color" are the same as for the -color option. The value for spacing defines the distance between dots on more»
The config file is divided into sections which start with a line like [body], where body is either default (everything in this section, which should be at the top, applies to all bodies unless overridden later), or a body name like saturn. Be careful to specify options that apply to only one planet under that planet's section, and not under [default]. For example, a common mistake is to put clou more»
Put JPL digital ephemeris files (DE200, DE405, or DE406) here to use for computing planetary positio more»
The FreeMonoBold font is from http://www.nongnu.org/freefont and is released under the GPL.
The format of each line is generally latitude, longitude, string, as in the example below: 33.943 - more»
The format of an origin file is YYYYMMDD.HHMMSS range lat lon [localtime] Where the date is in G more»
A sample TLE entry for the International Space Station looks like this: ISS (ZARYA) 1 more»