The Astronomical Almanac is an
interactive utility that can calculate the position of
any astronomical object for any time, date and location
on Earth. It also provides details for the Sun, Moon and planets.
To calculate
the position of an astronomical object in the horizon system
(azimuth and elevation) the Astronomical
Almanac requires
the coordinates of the location of observation (latitude,
longitude and height), the date and time of the observation
and the coordinates (right ascension, declination and epoch)
of the object. The "Submit Request" will return the results
of the Astronomical Almanac. A full
description of the facility
is available. The user should refer to the description of the
Input Parameters
before use or read the short
instructions and
guidelines.
A full explanation of the Astronomical AlmanacOutput Parameters
is also available.
For convenience two pull-down menus are included. One
allows you to specify a location from a list of more than 200
of the world's
major cities. The other allows selection of an object from a list of
the 50 brightest stars. If you want to use another
location or object select "Use Inputs" from the location and/or
astronomical object menus and type your positions in the
text boxes below.
The information supplied by this facility should be regarded as
approximate only. The author accepts no responsibility for any failure
or inadequacies of the interface nor the calculations and
disavows any legal liability as a result of the use of this facility.
The facility has limited error checking capabilities but if you find
obvious errors please contact the
Webmaster.
