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- Path: sparky!uunet!dtix!darwin.sura.net!Sirius.dfn.de!chx400!bernina!lips
- From: lips@bernina.ethz.ch (Emil Lips)
- Newsgroups: sci.astro
- Subject: Calculating Planet Positions
- Keywords: Calculation Error
- Message-ID: <1992Aug20.131425.7141@bernina.ethz.ch>
- Date: 20 Aug 92 13:14:25 GMT
- Organization: Swiss Federal Institute of Technology (ETH), Zurich, CH
- Lines: 17
-
- Help!
-
- I+ve a problem with the book "Astronomie & Ordinateur" written by
- Guy Serane (Paris, Dunod, 1987)
-
- I am using the routines described in that book to calculate the
- position of the planets. Now I have encountered a difference between
- the results the program gives and the ephemerids provided by NASA
- (which I belief to be more accurate). The error is below 1 degree
- but bigger than 1/2 a degree over the range of the next 100 years.
- I get the worst results for Pluto and Neptun, but Jupiter and Saturn
- do also give errors in the range of 1/5 degree.
-
- So if you have had the same problems with these routines or know of
- a more accurate one, I would be glad if you could drop me a note.
-
- Yours Milo
-