SNR(Green) ivo://nasa.heasarc/snrgreen NASA/GSFC HEASARC Green 2026-04-10 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov SNR This catalog of known Galactic supernova remnants (SNRs) is an updated version of the catalogs of Galactic SNRs presented in detail in Green (1984, 1988), in summary form in Green (1991, 1996, 2004, 2009), and on the Web (versions of 1995-July, 1996-August, 1998-September, 2000-August, 2001-December, 2004-January, 2006-April, 2009-March, and 2014-May). [Note that the version published in Green (1996) was produced in 1993.] This June 2017 version of the catalog contains 295 SNRs, and is based on results published in the literature up to the end of 2016. The basic summary data included in this catalog for each SNR are its designation, position, angular size (in arcminutes), type, flux density at 1 GHz, spectral index, and any other names by which it is known. Notes on these parameters, on possible remnants not included, and on questionable SNRs that are listed in this catalog, are given in the full version of the catalog on the Web at <a href="http://www.mrao.cam.ac.uk/surveys/snrs/snrs.info.html">http://www.mrao.cam.ac.uk/surveys/snrs/snrs.info.html</a> It should be noted that there are serious selection effects which apply to the identification of Galactic SNRs (e.g., Green 1991, 2004, 2005, 2009, 2014), so that care should be taken if these data are used in any statistical studies. This version of the Green Catalog of Galactic Supernova Remnants was ingested at the HEASARC in July 2017. It is based on the Catalogue of Galactic Supernova Remnants, 2017 June version, <a href="https://cdsarc.cds.unistra.fr/ftp/cats/VII/278">CDS Catalog VII/278</a>, file snrs.dat, obtained from the CDS at <a href="http://cdsarc.u-strasbg.fr/ftp/cats/VII/278/">http://cdsarc.u-strasbg.fr/ftp/cats/VII/278/</a>. This is a service provided by NASA HEASARC . 2017yCat.7278....0G https://heasarc.gsfc.nasa.gov/W3Browse/all/snrgreen.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=snrgreen& GET text/xml 180 99999 true 183.80416667 -65.5 1 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=snrgreen GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_snrgreen&Action=More+Options&Action=Parameter+Search&ConeAdd=1 NEBULA CATALOG 1 Optical Radio public snrgreen Green Catalog of Galactic SNRs (June 2017 Version) "__y_ra_dec" System unit vector column double nullable lii Galactic Longitude degree pos.galactic.lon double nullable flag_spectral_index Flag [?V] Indicates Uncertainty and/or Variability in Spectral Index meta.code;spect.index char nullable flux_1_ghz Flux Density at 1 GHz (mJy) mJy phot.flux.density;em.radio.750-1500MHz double nullable alt_names Other Designations Commonly Used meta.id char nullable limit_flux_1_ghz Limit Flag [>] for 1-GHz Flux Density meta.code;phot.flux.density;em.radio.750-1500MHz char nullable "__row" System index column char nullable flag_flux_1_ghz Flag [?] Indicates Uncertainty in 1-GHz Flux Density meta.code.error;phot.flux.density;em.radio.750-1500MHz char nullable "__x_ra_dec" System unit vector column double nullable ra Right Ascension degree pos.eq.ra;meta.main double nullable major_diameter Major Diameter or Angular Size of Remnant (arcmin) arcmin phys.angSize.smajAxis double nullable dec Declination degree pos.eq.dec;meta.main double nullable class Browse Object Classification src.class short nullable flag_major_diameter Flag [?] Indicates Uncertainty in Angular Size meta.code.error;phys.angSize char nullable minor_diameter Minor Diameter or Angular Size of Remnant (arcmin) arcmin phys.angSize.sminAxis double nullable type Flag [CFS?] Indicates Type of Remnant src.class char nullable name Supernova Remnant Designation meta.id;meta.main char nullable spectral_index Spectral Index of Integrated Radio Emission spect.index double nullable "__z_ra_dec" System unit vector column double nullable bii Galactic Latitude degree pos.galactic.lat double nullable