Ecliptic to Equatorial SLA_ECLEQ
CALL sla_ECLEQ (DL, DB, DATE, DR, DD)| DL,DB | D | ecliptic longitude and latitude (mean of date, IAU 1980 theory, radians) |
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| DATE | D | TDB (formerly ET) as Modified Julian Date (JD2400000.5) |
| DR,DD | D | J2000.0 mean (radians) |