eq: Declination of the sun at the Equinox

In skyscapeR: Data Analysis and Visualization for Skyscape Archaeology

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

# Equinoctial geocentric declination:
eq()

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

skyscapeR documentation built on Oct. 30, 2021, 1:06 a.m.