Subject: astrometry / Publisher: The GAVO DC team / Validation Level: 2

ID:: ivo://org.gavo.dc/apfs/res/apfs_new/gdr3query
Title:: APFS Gaia DR3 Simple Query
Short Name:: apfs_gaiaquery
Date:: 27 Dec 2024 08:31:02
Publisher:: The GAVO DC team
Description:: This service is an extension of the Apparent Places of Fundamental Stars (APFS) computing exact geocentric positions in both the CIO and equinox systems to stars from the Gaia DR3 result catalogue.

ID:: ivo://org.gavo.dc/apfs/res/apfs_new/gdr2query
Title:: APFS Gaia DR2 Simple Query
Short Name:: apfs_gaiaquery
Date:: 27 Dec 2024 08:31:02
Publisher:: The GAVO DC team
Description:: This service is an extension of the Apparent Places of Fundamental Stars (APFS) computing exact geocentric positions in both the CIO and equinox systems to stars from the Gaia DR2 result catalogue.

ID:: ivo://org.gavo.dc/apfs/res/apfs_new/hipquery
Title:: APFS HIP Simple Query
Short Name:: apfs_hipquery
Date:: 27 Dec 2024 08:31:02
Publisher:: The GAVO DC team
Description:: This service is an extension of the Apparent Places of Fundamental Stars (APFS) computing exact geocentric positions in both the CIO and equinox systems to stars from the Hipparcos catalogue.

ID:: ivo://org.gavo.dc/apfs/res/apfs_new/catquery
Title:: APFS Simple Query Form
Short Name:: apfs_catquery
Date:: 27 Dec 2024 08:31:02
Publisher:: The GAVO DC team
Description:: The Apparent Places of Fundamental Stars (APFS) give exact geocentric positions for a selected set of FK6 stars.

ID:: ivo://org.gavo.dc/arigfh/q/cone
Title:: ARIGFH identified objects
Short Name:: arigfh scs
Date:: 27 Dec 2024 08:31:12
Publisher:: The GAVO DC team
Description:: 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 construct the FK* series of fundamental catalogs. About 7e6 published positions are included. In GAVO's DC, we provide tables of identified and non-identified stars together with the master catalog that objects were identified against.

ID:: ivo://org.gavo.dc/arigfh/q/gfhtables
Title:: ARIGFH object catalog
Date:: 06 Feb 2024 09:06:47
Publisher:: The GAVO DC team
Description:: 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 construct the FK* series of fundamental catalogs. About 7e6 published positions are included. In GAVO's DC, we provide tables of identified and non-identified stars together with the master catalog that objects were identified against.

ID:: ivo://org.gavo.dc/arihip/q/cone
Title:: ARIHIP astrometric catalogue
Short Name:: arihip cone
Date:: 27 Dec 2024 08:31:05
Publisher:: The GAVO DC team
Description:: 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 the FK6. It provides 'best data' for 90 842 stars with a typical mean error of 0.89 mas/year (about a factor of 1.3 better than Hipparcos for this sample of stars).

ID:: ivo://org.gavo.dc/apfs/times/q
Title:: Computation of GAST, GMST, and ERA
Short Name:: times_series
Date:: 27 Dec 2024 08:31:06
Publisher:: The GAVO DC team
Description:: Computation of Greenwich Apparent Sidereal Time, Greenwich Mean Sidereal Time, and the Earth Rotation Angle

ID:: ivo://org.gavo.dc/ucac3/q/corr
Title:: Corrections between UCAC3 and PPMXL
Short Name:: UCAC3 ICRS corr
Date:: 27 Dec 2024 08:31:13
Publisher:: The GAVO DC team
Description:: 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 all stars in a sqrt(2)/2-degrees environment around the gridpoint given. The corrections given here should bring UCAC3 based astrometry to the ICRS.

ID:: ivo://org.gavo.dc/ppmxl/q/corr
Title:: Corrections between USNO-B and PPMXL
Short Name:: PPMXL USNO corr
Date:: 27 Dec 2024 08:31:04
Publisher:: The GAVO DC team
Description:: 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 over all stars in a sqrt(2)/2-degrees environment around the gridpoint given. The corrections given here should bring USNO-B based astrometry to the ICRS.

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