celestial coordinate system
(system for specifying position of celestial objects)
A celestial coordinate system is a coordinate system used to specify
the position of an object in the sky (celestial sphere). Spherical
polar coordinates are commonly used, but systems differ in
their orientation, i.e., the direction of their axes.
Some systems:
(Among these, the horizontal coordinate system indicates a point in the
viewed sky relative to the observer, while the others indicate such a point
relative to the stars.)
Beyond these general ideas, certain detailed specifications are necessary,
including exactly where the axes will fall within the celestial
sphere, and whether and how the changes in the position and location
of Earth will be accommodated. The International Celestial Reference System (ICRS) is a system
standardized by the International Astronomical Union and can be considered a particular
detailed-implementation of equatorial coordinates.
(coordinates,equatorial,celestial sphere)
Further reading:
https://en.wikipedia.org/wiki/Celestial_coordinate_system
https://astronomy.swin.edu.au/cosmos/C/Celestial+Coordinates
http://hyperphysics.phy-astr.gsu.edu/hbase/Astro/Obscoord.html
http://spiff.rit.edu/classes/phys301/lectures/coords/coords.html
https://ned.ipac.caltech.edu/coordinate_calculator
Referenced by pages:
aberration
angular distance
arcsecond (arcsec)
BeppoSAX
Catalog of Galaxies and Clusters of Galaxies (CGCG)
Catalogues of Fundamental Stars
celestial reference frame
celestial sphere
counterpart
Danjon astrolabe
DASCH
ecliptic
ecliptic coordinate system
epoch
epoch B1950.0
epoch J2000.0
equinox
Extended Groth Strip (EGS)
Gaia
Gaia Celestial Reference Frame (Gaia-CRF3)
galactic anticenter
galactic coordinate system (GCS)
galaxy power spectrum
Hipparcos Celestial Reference Frame (HCRF)
horizontal coordinate system
ICRF
International Celestial Reference System (ICRS)
LEDA
Luyten Half-second Catalog (LHS)
Lyman-alpha forest
NGC 2363
Perseus-Pisces Supercluster
phone number
plate measuring machine (APM)
positional astronomy
SIMBAD
slew survey
stellar kinematics
Index