Bangert, John A. and Kaplan, George H. "NOVAS-C, Naval Observatory Vector Astrometry
Subroutines, C Version 2.0.1."
NOVAS provides the core routines for star, planet, sun, and moon positions. These
same routines are used in MICA and to produce the Nautical Almanac published by
the United States Naval Observatory.
 Standish, et al. "DE405: JPL Planetary and Lunar Ephemerides".
The latest JPL ephemeris, created in May-June, 1997. DE405 is based upon the International
Celestial Reference Frame (ICRF), the newly-adopted reference frame of the International
Astronomical Union (IAU). The frames of DE200 and DE405 differ by no more than about
 Hoffleit D., Warren Jr W.H., "The Bright Star Catalogue, 5th Revised Edition".
Astronomical Data Center, NSSDC/ADC (1991).
The Bright Star Catalogue (BSC) is widely used as a source of basic astronomical
and astrophysical data for stars brighter than magnitude 6.5. The catalog contains
the identifications of included stars in several other widely-used catalogs, double-
and multiple-star identifications, indication of variability and variable-star identifiers,
equatorial positions for B1900.0 and J2000.0, galactic coordinates, UBVRI photoelectric
photometric data when they exist, spectral types on the Morgan-Keenan (MK) classification
system, proper motions (J2000.0), parallax, radial- and rotational-velocity data,
and multiple-star information (number of components, separation, and magnitude differences)
for known nonsingle stars.
The BSC contains 9110 objects, of which 9096 are stars (14 objects catalogued in
the original compilation of 1908 are novae or extragalactic objects that have been
retained to preserve the numbering, but most of their data are omitted).
 Heafner, Paul J. "Fundamental Ephemeris Computations, For Use with JPL Data".
Willmann-Bell, Inc. 1999.
This book provided the keys to getting Novas and the JPL data to work together.
 United States Naval Observatory. "The Nautical Almanac for the year 2001", US
Government Printing Office.
The algorithms for sight reduction and fix computation come from the 2001 edition
of the Nautical Almanac.
 Meeus, Jean. "Astronomical Algorithms", Willmann-Bell, Inc. 2000.
Although Pocket Stars does not use the positional calculations found in this book,
it is invaluable as a general text on astronomical calculations.
 Duffett-Smith, Peter. "Practical Astronomy with your Calculator". Cambridge
University Press, 1988.
Not as comprehensive as Meeus, but valuable as an alternative approach which is
more methodical with step-by-step solutions to astronomical problems.
 NASA. "Planetary Fact Sheets",
All of the planetary data and images on the info page are from NASA.