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To find the position in some observer's sky of a
celestial object with right ascension RADEC
rdaa RA±DEC lat lon dt
RA±DEC
Right ascension in hours, followed by the signed
declination; either “+” or “-” is
required as a separator. For the format of hour
quantities, see Section 3.4, “Specifying hours on command lines”; for
the format of the declination, see Section 3.2, “Specifying angles on command lines”.
lat lonThe next two arguments are the observer's latitude and longitude, respectively; see Section 3.3, “Specifying latitude and longitude on command lines” for the syntax of these arguments.
dtThe date and time of the observation, using the syntax described in Section 3.1, “Specifying dates and times on command lines”.