Theodosius, De diebus et noctibus Paul Kunitzsch and Richard Lorch Key Words: day (yawm; nah¯ ar ), ecliptic, equator, hemisphere (visible and invisible), horizon, meridian line, night, Qust.¯a b. L¯ uq¯a, spherical

Source URL: www.ub.edu

• Ancient Greek mathematicians
• Arabic language
• Gerard of Cremona
• Euclid
• Languages of Africa
• Languages of Asia
• Culture

B30 REDUCTION OF CELESTIAL COORDINATES Reduction for precession—approximate formulae (continued) The precessional constants p, m, etc. are as follows:

Source URL: asa.usno.navy.mil

• Rotational symmetry
• Spherical coordinate system
• Rotation
• Ecliptic coordinate system
• Conversion between quaternions and Euler angles
• Geometry
• Mathematics
• Algebra

Planetary Orbit Simulator – Student Guide

Source URL: astro.unl.edu

• Declination
• Equinox
• Longitude
• Solstice
• Latitude
• Plane of the ecliptic
• Equatorial coordinate system
• Subsolar point
• Celestial meridiator
• Astrology
• Celestial coordinate system
• Ecliptic

Spitzer Observatory Pocket Guide v2.0 (October[removed]For details and updated information, see the Spitzer Observer’s Manual at http://ssc.spitzer.caltech.edu or contact the Spitzer Helpdesk at

Source URL: irsa.ipac.caltech.edu

• Astronomy
• Infrared telescopes
• Celestial coordinate system
• Plane of the ecliptic
• Telescope
• European Space Agency
• Spitzer Space Telescope
• Spacecraft
• Spaceflight
• Space telescopes

FIGURE 3 Total Lunar Eclipse of 2014 Oct 08 Ecliptic Conjunction = 10:51:42.8 TD ( = 10:50:35.5 UT ) Greatest Eclipse = 10:55:43.6 TD ( = 10:54:36.2 UT ) Penumbral Magnitude = 2.1456

Source URL: eclipse.gsfc.nasa.gov

• Science
• October 2004 lunar eclipse
• November 2003 lunar eclipse
• Eclipses
• Lunar eclipse
• Observing the Moon

FIGURE 4 Partial Solar Eclipse of 2014 Oct 23 Ecliptic Conjunction = 21:57:46.8 TD ( = 21:56:39.5 UT ) Greatest Eclipse = 21:45:38.7 TD ( = 21:44:31.4 UT ) Eclipse Magnitude = 0.8114

Source URL: eclipse.gsfc.nasa.gov

• Solar eclipse of July 22
• 14120 Espenak
• Saros
• Astronomy
• Science
• Eclipses

USNO Circular 179 — Errata & Updates George H. Kaplan U.S. Naval Observatory 2006 September 1

Source URL: aa.usno.navy.mil

• Axial precession
• Precession
• Astrometry
• International Astronomical Union
• Ecliptic
• Ephemeris
• Astrology
• Celestial coordinate system
• Astronomy

GLOSSARY M1 aberration (of light): the relativistic apparent angular displacement of the observed position of a celestial object from its geometric position, caused by the motion of the observer in

Source URL: asa.usno.navy.mil

• Celestial mechanics
• Astrodynamics
• Astrometry
• Angle
• Ecliptic
• Sidereal time
• Longitude
• Epoch
• Equinox
• Astrology
• Measurement
• Celestial coordinate system

1 1.1 The Search Algorithm Local rectangular coordinates

Source URL: frank.harvard.edu

• Geometry
• Polar coordinate system
• Spherical coordinate system
• Trigonometric functions
• Vector space
• Centripetal force
• Ecliptic coordinate system
• Algebra
• Mathematics
• Coordinate systems

FIGURE 2 Partial Lunar Eclipse of 2010 Jun 26 Ecliptic Conjunction = 11:31:27.7 TD ( = 11:30:20.8 UT ) Greatest Eclipse = 11:39:33.7 TD ( = 11:38:26.8 UT ) Penumbral Magnitude = 1.5773

Source URL: eclipse.gsfc.nasa.gov