TEVCAT ivo://nasa.heasarc/tevcat NASA/GSFC HEASARC Wakely, Horan 2026-06-12 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Star TeVCat (<a href="http://tevcat.org/">http://tevcat.org/</a>) is an online, interactive catalog for very-high-energy (VHE: energies, E >~ 50 GeV) gamma-ray astronomy. As VHE astronomy continues to grow, the usefulness of a one-stop clearing house for information on new sources is increasingly evident. TeVCat is intended to be such a resource. With sky maps, scientific information, visibility plotters and linked references available at the website, it will help the wider gamma-ray community stay up-to-date and informed on this exciting and rapidly developing field. This HEASARC database table provides the TeVCat list of VHE sources as well as links to the TeV source resource pages on the TeVCat website. The catalog and <a href="http://tevcat.org/">the website at the University of Chicago</a> are maintained by Scott Wakely and Deirdre Horan. This table was first ingested by the HEASARC in July 2017 based on the catalog of VHE gamma-ray sources available at <a href="http://tevcat.org/">http://tevcat.org/</a>. It is updated automatically within a few days of the catalog being updated on the University of Chicago website. This is a service provided by NASA HEASARC . 2008ICRC....3.1341W https://heasarc.gsfc.nasa.gov/W3Browse/all/tevcat.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=tevcat& GET text/xml 180 99999 true 81.19583333 -69.64722222 0.0833333333333333 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=tevcat GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_tevcat&Action=More+Options&Action=Parameter+Search&ConeAdd=1 GROUND-BASED 0.0833333333333333 Gamma-ray public tevcat TeV Gamma-Ray Source Catalog name Catalog Source Designation meta.id;meta.main char nullable alt_name Alternative Source Designation meta.id char nullable ra Right Ascension degree pos.eq.ra;meta.main double nullable dec Declination degree pos.eq.dec;meta.main double nullable source_type Type/Classification of Source src.class char nullable tevcat_url URL of TeVCat Source Information Web Page meta.ref.url char nullable spectral_index Spectral Index spect.index;em.gamma.hard double nullable flux Flux Crab phot.flux;em.gamma.hard double nullable redshift Redshift src.redshift double nullable lii Galactic Longitude degree pos.galactic.lon double nullable "distance" Distance to Source kpc pos.distance double nullable extended_flag Boolean Flag [01] Indicates Extended Source meta.code;src;phys.angSize short nullable bii Galactic Latitude degree pos.galactic.lat double nullable y_size Angular Size in Declination Direction degree phys.angSize double nullable source_sample Originating Sample for the Source: 1=Well-Established, 2=Newly Announced meta.ref;meta.table short nullable x_size Angular Size in Right Ascension Direction degree phys.angSize double nullable discovery_date Date of Discovery (YYYY-MM) time;obs char nullable source_number Sequential Identification Number for Each Source in Catalog meta.id;src short nullable "__x_ra_dec" System unit vector column double nullable "__y_ra_dec" System unit vector column double nullable "__z_ra_dec" System unit vector column double nullable "__row" System index column char nullable