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| 1 | #include "slalib.h"
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| 2 | #include "slamac.h"
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| 3 | double slaEpb ( double date )
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| 4 | /*
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| 5 | ** - - - - - - -
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| 6 | ** s l a E p b
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| 7 | ** - - - - - - -
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| 8 | **
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| 9 | ** Conversion of Modified Julian Date to Besselian epoch.
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| 10 | **
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| 11 | ** (double precision)
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| 12 | **
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| 13 | ** Given:
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| 14 | ** date double Modified Julian Date (JD - 2400000.5)
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| 15 | **
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| 16 | ** The result is the Besselian epoch.
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| 17 | **
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| 18 | ** Reference:
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| 19 | ** Lieske,J.H., 1979. Astron. Astrophys.,73,282.
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| 20 | **
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| 21 | ** Last revision: 31 October 1993
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| 22 | **
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| 23 | ** Copyright P.T.Wallace. All rights reserved.
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| 24 | */
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| 25 | {
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| 26 | return 1900.0 + ( date - 15019.81352 ) / 365.242198781;
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| 27 | }
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