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UKIRT Hemisphere Survey L, T & Y dwarfs catalog
We present the positions, proper motions, and near-infrared photometry for 966 known objects with spectral types later than M that were observed as part of the the UKIRT... -
Position and photometric variability
The stability of the International Celestial Reference Frame (ICRF), realized through geodetic very long baseline interferometry (VLBI) positions of thousands of extragalactic... -
Spatiotemporal technosignature candidate targets
Spatiotemporal techniques for signal coordination with actively transmitting extraterrestrial civilizations, without the need for prior communication, can constrain... -
Gaia DR3 source catalogue "light"
This is gaia_source from the Gaia Data Release 3, stripped to just enough columns to enable basic science (but therefore a bit faster and simpler to deal with than the full... -
Gaia DR3 Lite Cone Search
This schema contains data re-published from the official Gaia mirrors (such as ivo://uni-heidelberg.de/gaia/tap) either to support combining its data with local tables (the... -
The LIFE Target Star Database LIFETD
The LIFE Target Star Database contains information useful for the planned LIFE mission_ (mid-ir, nulling interferometer in space). It characterizes possible target systems... -
LIFE Target Database Cone Search
The LIFE Target Star Database contains information useful for the planned LIFE mission_ (mid-ir, nulling interferometer in space). It characterizes possible target systems... -
UCAC3 nocross
The UCAC3 all-sky CCD astrograph catalogue, minus the fields from 2MASS and SuperCosmos and matching/object flags (which can be recovered with a local crossmatch). -
Corrections between UCAC3 and PPMXL
Differences between UCAC3 and PPMXL in positions and proper motions, on an all-sky one-degree grid. At each gridpoint we give the differences X(PPMXL)- X(UCAC3) averaged over... -
ARIGFH object catalog
ARI's "Geschichte des Fixsternhimmels" is an attempt to collect all astrometrically useful observations from before ca. 1970 in a way comparable to what has been done to... -
ARIGFH identified objects
ARI's "Geschichte des Fixsternhimmels" is an attempt to collect all astrometrically useful observations from before ca. 1970 in a way comparable to what has been done to... -
The fourth U.S. Naval Observatory CCD Astrograph Catalog (UCAC4)
UCAC4 is a compiled, all-sky star catalog covering mainly the 8 to 16 magnitude range in a single bandpass between V and R. Positional errors are about 15 to 20 mas for stars in... -
Computation of GAST, GMST, and ERA
Computation of Greenwich Apparent Sidereal Time, Greenwich Mean Sidereal Time, and the Earth Rotation Angle -
The HSOY Catalog
HSOY is a catalog of 583'001'653 objects with precise astrometry based on PPMXL and Gaia DR1. Typical formal errors at mean epoch in proper motion are below 1 mas/yr for... -
The Lepine-Shara Catalog of High Proper Motion Stars
The LSPM catalog is a comprehensive list of 61,977 stars north of the J2000 celestial equator that have proper motions larger than 0.15"/yr (local-background-stars frame).... -
ARIHIP astrometric catalogue
The catalogue ARIHIP has been constructed by selecting the 'best data' for a given star from combinations of HIPPARCOS data with Boss' GC and/or the Tycho-2 catalogue as well as... -
TGAS catalogue
This table is a subset of GaiaSource comprising those stars in the Hipparcos and Tycho-2 Catalogues for which a full 5-parameter astrometric solution has been possible in Gaia... -
Gaia eDR3 Autocorrelation
This is a table that simply gives, for each object in Gaia eDR3, the identifier of its closest neighbour together with the distance of the pair. -
The PPMXL Catalog
PPMXL is a catalog of positions, proper motions, 2MASS- and optical photometry of 900 million stars and galaxies, aiming to be complete down to about V=20 full-sky. It is the... -
Corrections between USNO-B and PPMXL
Differences between USNO-B and PPMXL in positions and proper motions, on an all-sky one-degree grid. At each gridpoint we give the differences X(PPMXL)- X(USNO-B1.0) averaged...
