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Use the MPC ObsCodes list for observatory locations #22

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Merged
ijiraq merged 1 commit into from
Oct 6, 2026
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Use the MPC ObsCodes list for observatory locations #22

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14 changes: 8 additions & 6 deletions orbfit/README
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Expand Up @@ -46,10 +46,12 @@ put them in the binary format using some programs I acquired. I have
put these together into a separate tar file, called DE405C.tar.gz.

Also included is a file "observatories.dat" which contains locations
of various observatories and their standard MPC codes. The format
should be pretty obvious if you need to add more. There is now a
facility for specifying orbiting observatories, see update.tex for
more information.
of various observatories and their standard MPC codes. It is a copy
of the MPC list at https://minorplanetcenter.net/iau/lists/ObsCodes.html
and can be refreshed by saving that page as text. Space observatories
(e.g. 250, Hubble) have no longitude or parallax constants; their
positions must be supplied with each observation (MPC two-line
satellite records), otherwise the geocenter is used.

By default, the programs will look for the observatory and ephemeris
data files under the names "observatories.dat" and "binEphem.405" in
Expand Down Expand Up @@ -118,8 +120,8 @@ Here you can use as many digits as you like in each field, you just
need to insure that your RA & Dec don't have any spaces in them.
ERROR is the uncertainty (in arcseconds) in each the RA & Dec of this
observation.
OBSCODE is the observatory code, as used by the MPC. The code must
be in the "observatories.dat" file in order to be used.
OBSCODE is the observatory code, as used by the MPC (e.g. 568 or T14).
The code must be in the "observatories.dat" file in order to be used.

(c) enter using a date:
YYYY MM DD.DDDDD HH:MM:SS.SS +DD:MM:SS.SS ERROR OBSCODE
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