skyscapeR (version 1.0.0)

eq: Declination of the sun at the Equinox

Description

This function calculates the declination of the sun at the astronomical equinox with corrected average parallax.

Usage

eq(loc = FALSE, parallax = 0.00224, altitude = 0, verbose = TRUE)

Arguments

loc

(Optional) This can be either the latitude of the location, or a skyscapeR.horizon object. If missing or FALSE, function will output geocentric declination.

parallax

(Optional) Average parallax value for the sun. Defaults to 0.00224.

altitude

(Optional) Altitude of the sun. Defaults to 0 degrees.

verbose

(Optional) Boolean to control output of warnings and messages. Defaults to TRUE.

See Also

obliquity, jS, eq, zenith, antizenith, spatial.equinox, parallax.corr

Examples

# NOT RUN {
# Equinoctial geocentric declination:
eq()

# Topocentric declination for same year and latitude of 50 degrees N:
eq(loc=50)
# }