SUMSS ivo://nasa.heasarc/sumss NASA/GSFC HEASARC Bock, Large, Sadler; Mauch et al. 2026-10-09 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Survey Source The Sydney University Molonglo Sky Survey (SUMSS) is a radio imaging survey of the sky south of declination, delta = -30 degrees (a total area of 8100 square degrees) carried out with the Molonglo Observatory Synthesis Telescope (MOST) operating at 843 MHz. The survey consists of 629 4.3 degrees by 4.3 degrees mosaic images with a resolution of 45" by 45" x cosec delta, and a limiting peak brightness of 6 mJy/beam at declinations delta <= 50 degrees, and 10 mJy/beam at delta > 50 degrees. The SUMSS is therefore similar in sensitivity and resolution to the northern NRAO VLA Sky Survey (NVSS). This table based on the latest version of the SUMSS Source Catalog of radio sources (which uses all of the released mosaics). Sources were found by fitting two-dimensional Gaussians to SUMSS mosaics. Positions in the catalog are accurate to within 1-2" for sources with peak brightness >= 20 mJy/beam, and are always better than 10". The internal flux density scale is accurate to within 3%. Image artifacts were classified using a decision tree, which correctly identified and rejected spurious sources in over 96% of cases. Analysis of the catalog shows that it is highly uniform and is complete to 8 mJy at delta <= -50 degrees, and to 18 mJy at delta > -50 degrees. This HEASARC table was initially created in August 2005. It is updated automatically within a week of any detected change to the SUMSS Source Catalog as obtained from the SUMSS Website at the following URL: <pre> <a href="https://web.archive.org/web/20241228020055/">https://web.archive.org/web/20241228020055/</a><a href="http://www.astrop.physics.usyd.edu.au/sumsscat/update">http://www.astrop.physics.usyd.edu.au/sumsscat/update</a> </pre> This is a service provided by NASA HEASARC . 2003MNRAS.342.1117M https://heasarc.gsfc.nasa.gov/W3Browse/all/sumss.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=sumss& GET text/xml 180 99999 true 266.30679167 -89.88188889 0.0833333333333333 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=sumss GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_sumss&Action=More+Options&Action=Parameter+Search&ConeAdd=1 RADIO CATALOG 0.0833333333333333 Radio public sumss Sydney University Molonglo Sky Survey (SUMSS) Source Catalog name Source Designation meta.id;meta.main char nullable ra Right Ascension degree pos.eq.ra;meta.main double nullable dec Declination degree pos.eq.dec;meta.main double nullable int_flux_36_cm Integrated 36-cm Flux Density (mJy) mJy phot.flux.density;em.radio.750-1500MHz float nullable int_flux_36_cm_error Error in Integrated 36-cm Flux Density (mJy) mJy stat.error;phot.flux.density;em.radio.750-1500MHz float nullable flux_36_cm_error Error in 36-cm Flux Density (mJy/beam) mJy/beam stat.error;phot.flux.density;em.radio.750-1500MHz float nullable fit_position_angle Fitted Position Angle (degree) degree pos.posAng float nullable fit_major_axis Fitted Major Axis (arcsec) arcsec phys.size.smajAxis float nullable flux_36_cm Flux Density at 36 cm (mJy/beam) mJy/beam phot.flux.density;em.radio.750-1500MHz float nullable minor_axis Minor Axis (arcsec) arcsec phys.size.sminAxis float nullable position_angle Position Angle (degree) degree pos.posAng float nullable fit_minor_axis Fitted Minor Axis (arcsec) arcsec phys.size.sminAxis float nullable ra_error Error in Right Ascension (arcsec) arcsec stat.error;pos.eq.ra float nullable x_pixel X Position of Pixel pos.cartesian.x;instr.pixel float nullable major_axis Major Axis (arcsec) arcsec phys.size.smajAxis float nullable dec_error Error in Declination (arcsec) arcsec stat.error;pos.eq.dec float nullable y_pixel Y Position of Pixel pos.cartesian.y;instr.pixel float nullable lii Galactic Longitude degree pos.galactic.lon double nullable number_mosaics Number of Mosaics meta.number;obs.image short nullable mosaic_name Mosaic Name meta.id;obs.image char nullable bii Galactic Latitude degree pos.galactic.lat double 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