eq: Declination of the sun at the Equinox

In f-silva-archaeo/skyscapeR: Data Analysis and Visualization for Skyscape Archaeology

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

# Equinoctial geocentric declination:
eq()

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

f-silva-archaeo/skyscapeR documentation built on Sept. 25, 2024, 7:50 p.m.