XMMOMSUSS ivo://nasa.heasarc/xmmomsuss NASA/GSFC HEASARC MSSL/ESA 2026-06-19 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Survey Source The 2023 release of the XMM OM Serendipitous Ultraviolet Source Survey (XMM-SUSS6.1) Catalog, a catalog of optical/UV sources detected by the Optical Monitor (OM) on-board the European Space Agency's (ESA's) XMM-Newton observatory, spans the period of observations from 2000 to November 2022. The data processing was performed at the European Space Astronomy Centre (ESAC, Madrid, Spain) using the XMM Science Analysis Software system (SAS) versions 18 and 19. In addition to covering a larger observation period, this sixth release reflects a change in philosophy with regard to the origin of the incorporated data. In previous releases, the data were generated via a bespoke processing of the OM Observation Data Files (ODFs) while in this new release, the catalog has been guided by the XMM user community and the authors have sought to harmonize the contents of the catalog with those of the OM data in the XMM-Newton Science Archive (XSA), which derive from the standard XMM-Newton pipeline processing system. While the bespoke processing and pipeline systems are fundamentally very similar, they are not identical and the differences lead to some differences in the output. The number of observations (OBSIDs) included in the catalog is 12,057. The total number of entries in this release is 9,920,390. They correspond to 6,659,554 unique sources, of which 1,225,117 have multiple entries in the source table, corresponding to different observations. For each entry, positional and photometric data (count rate, magnitude and flux) and quality flags for each measurement are provided. The description of the previous release of the catalog can be found in Page M.J. et al. (2012, MNRAS, 426, 903). U, B, V, UVW2, UVM2 and UVW1 refer to the filter bandpasses defined in the Source Properties: Filter Set section of the MSSL documentation for this catalog: <a href="http://www.mssl.ucl.ac.uk/www_astro/XMM-OM-SUSS/SourcePropertiesFilters.shtml">http://www.mssl.ucl.ac.uk/www_astro/XMM-OM-SUSS/SourcePropertiesFilters.shtml</a>. There is a second, related table which gives a summary of the observations from which the XMM-SUSS6.1 sources listed in this table have been detected and measured. That summary table is available at the HEASARC as the <a href="/W3Browse/xmm-newton/xmmomsuob.html">XMMOMSUOB table</a>. This HEASARC database table contains the sixth release of the XMM-OM SUSS catalog, XMM-SUSS6.1, released by ESA in October 2023, obtained from the XMM-Newton Science Archive (<a href="http://xmm.esac.esa.int/xsa">http://xmm.esac.esa.int/xsa</a>), and ingested into the HEASARC database in October 2023. It is also available at the HEASARC as the gzipped FITS file <a href="https://heasarc.gsfc.nasa.gov/FTP/xmm/data/catalogues/XMM-OM-SUSS6-1.1.fits.gz">https://heasarc.gsfc.nasa.gov/FTP/xmm/data/catalogues/XMM-OM-SUSS6-1.1.fits.gz</a>. This is a service provided by NASA HEASARC . 2012MNRAS.426..903P https://heasarc.gsfc.nasa.gov/W3Browse/all/xmmomsuss.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=xmmomsuss& GET text/xml 180 99999 true 4.95740272202795e-05 -60.3382187752467 0.0166666666666667 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=xmmomsuss GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_xmmomsuss&Action=More+Options&Action=Parameter+Search&ConeAdd=1 XMM-NEWTON 0.0166666666666667 Optical UV public xmmomsuss XMM-Newton Optical Monitor Serendipitous UV Source Survey Catalo name IAU-Style Source Designation meta.id;meta.main char nullable src_num Source Number in the Individual Source List for This Observation meta.id int nullable ra Corrected Right Ascension of the Source degree pos.eq.ra;meta.main double nullable dec Corrected Declination of the Source degree pos.eq.dec;meta.main double nullable error_radius Statistical Positional Uncertainty arcsec stat.error;pos double nullable bmag_ab AB Magnitude in B Band mag phot.mag;em.opt.B double nullable bmag_ab_error Uncertainty in AB Magnitude in B Band mag stat.error;phot.mag;em.opt.B double nullable umag_ab AB Magnitude in U Band mag phot.mag;em.opt.U double nullable umag_ab_error Uncertainty in AB Magnitude in U Band mag stat.error;phot.mag;em.opt.U 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 uvw2_srcdist Distance of Source from Nearest Neighbor in UVW2 Band arcsec phys.angSize;em.UV.200-300nm double nullable v_flux_error Uncertainty in Flux in V Band erg/cm^2/s/Angstrom stat.error;phot.flux.density;em.opt.V double nullable uvm2_rate_error Uncertainty in UVM2 Band Count Rate ct/s stat.error;phot.count;em.UV.200-300nm double nullable uvw2_flux Flux in UVW2 Band erg/cm^2/s/Angstrom phot.flux.density;em.UV.200-300nm double nullable v_srcdist Distance of Source from Nearest Neighbor in V Band arcsec phys.angSize;em.opt.V double nullable uvm2_flux Flux in UVM2 Band erg/cm^2/s/Angstrom phot.flux.density;em.UV.200-300nm double nullable uvm2_rate UVM2 Band Count Rate ct/s phot.count;em.UV.200-300nm double nullable v_snr Significance of Source Detection in V Band sigma stat.snr;em.opt.V double nullable uvm2_position_angle Position Angle of UVM2-Band Source Major Axis degree pos.posAng;em.UV.200-300nm double nullable v_flux Flux in V Band erg/cm^2/s/Angstrom phot.flux.density;em.opt.V double nullable uvm2_quality_flags String of Quality Flags for Source in UVM2 Band meta.code.qual;em.UV.200-300nm char nullable uvw1_sky_image Flag [1] Indicates Derived from Summed UVW1 Exposure from Stacked Sky Images meta.code;em.UV.200-300nm short nullable uvw1_rate_error Uncertainty in UVW1 Band Count Rate ct/s stat.error;phot.count;em.UV.200-300nm double nullable umag_vega Vega (Johnson) Magnitude in U Band mag phot.mag;em.opt.U double nullable u_rate_error Uncertainty in U Band Count Rate ct/s stat.error;phot.count;em.opt.U double nullable uvm2mag_ab_error Uncertainty in AB Magnitude in UVM2 Band mag stat.error;phot.mag;em.UV.200-300nm double nullable uvm2mag_ab AB Magnitude in UVM2 Band mag phot.mag;em.UV.200-300nm double nullable u_sky_image Flag [1] Indicates Derived from Summed U Exposure from Stacked Sky Images meta.code;em.opt.U short nullable vmag_ab_error Uncertainty in AB Magnitude in V Band mag stat.error;phot.mag;em.opt.V double nullable uvw1_extended_flag Flag [1] Indicates Extended Source in UVW1 Band meta.code;src;phys.angSize;em.UV.200-300nm short nullable entry_number Sequential Identification Number for Each Entry in Catalog meta.id int nullable uvw2_position_angle Position Angle of UVW2-Band Source Major Axis degree pos.posAng;em.UV.200-300nm double nullable b_sky_image Flag [1] Indicates Derived from Summed B Exposure from Stacked Sky Images meta.code;em.opt.B short nullable uvw1mag_ab_error Uncertainty in AB Magnitude in UVW1 Band mag stat.error;phot.mag;em.UV.200-300nm double nullable b_rate B Band Count Rate ct/s phot.count;em.opt.B double nullable uvw1_flux Flux in UVW1 Band erg/cm^2/s/Angstrom phot.flux.density;em.UV.200-300nm double nullable v_position_angle Position Angle of V-Band Source Major Axis degree pos.posAng;em.opt.V double nullable u_position_angle Position Angle of U-Band Source Major Axis degree pos.posAng;em.opt.U double nullable vmag_vega_error Uncertainty in Vega (Johnson) Magnitude in V Band mag stat.error;phot.mag;em.opt.V double nullable uvw2mag_vega_error Uncertainty in Vega (Johnson) Magnitude in UVW2 Band mag stat.error;phot.mag;em.UV.200-300nm double nullable u_extended_flag Flag [1] Indicates Extended Source in U Band meta.code;src;phys.angSize;em.opt.U short nullable b_srcdist Distance of Source from Nearest Neighbor in B Band arcsec phys.angSize;em.opt.B double nullable uvw1_position_angle Position Angle of UVW1-Band Source Major Axis degree pos.posAng;em.UV.200-300nm double nullable uvw2_minor_axis FWHM of UVW2-Band Source along Minor Axis arcsec phys.angSize.sminAxis;em.UV.200-300nm double nullable v_major_axis FWHM of V-Band Source along Major Axis arcsec phys.angSize.smajAxis;em.opt.V double nullable b_position_angle Position Angle of B-Band Source Major Axis degree pos.posAng;em.opt.B double nullable u_srcdist Distance of Source from Nearest Neighbor in U Band arcsec phys.angSize;em.opt.U double nullable u_quality_flags String of Quality Flags for Source in U Band meta.code.qual;em.opt.U char nullable v_minor_axis FWHM of V-Band Source along Minor Axis arcsec phys.angSize.sminAxis;em.opt.V double nullable uvm2mag_vega_error Uncertainty in Vega (Johnson) Magnitude in UVM2 Band mag stat.error;phot.mag;em.UV.200-300nm double nullable uvw2_rate_error Uncertainty in UVW2 Band Count Rate ct/s stat.error;phot.count;em.UV.200-300nm double nullable b_snr Significance of Source Detection in B Band sigma stat.snr;em.opt.B double nullable uvw1_minor_axis FWHM of UVW1-Band Source along Minor Axis arcsec phys.angSize.sminAxis;em.UV.200-300nm double nullable u_rate U Band Count Rate ct/s phot.count;em.opt.U double nullable uvw1_major_axis FWHM of UVW1-Band Source along Major Axis arcsec phys.angSize.smajAxis;em.UV.200-300nm double nullable bmag_vega (Vega (Johnson) Magnitude in B Band mag) mag phot.mag;em.opt.B double nullable lii Corrected Galactic Longitude of the Source degree pos.galactic.lon double nullable uvw1_quality_flags String of Quality Flags for Source in UVW1 Band meta.code.qual;em.UV.200-300nm char nullable uvw1mag_vega_error Uncertainty in Vega (Johnson) Magnitude in UVW1 Band mag stat.error;phot.mag;em.UV.200-300nm double nullable bii Corrected Galactic Latitude of the Source degree pos.galactic.lat double nullable uvw2mag_ab AB Magnitude in UVW2 Band mag phot.mag;em.UV.200-300nm double nullable b_major_axis FWHM of B-Band Source along Major Axis arcsec phys.angSize.smajAxis;em.opt.B double nullable uvw1_srcdist Distance of Source from Nearest Neighbor in UVW1 Band arcsec phys.angSize;em.UV.200-300nm double nullable b_quality_flags String of Quality Flags for Source in B Band meta.code.qual;em.opt.B char nullable uvw2mag_ab_error Uncertainty in AB Magnitude in UVW2 Band mag stat.error;phot.mag;em.UV.200-300nm double nullable uvw1_snr Significance of Source Detection in UVW1 Band sigma stat.snr;em.UV.200-300nm double nullable u_flux Flux in U Band erg/cm^2/s/Angstrom phot.flux.density;em.opt.U double nullable v_sky_image Flag [1] Indicates Derived from Summed V Exposure from Stacked Sky Images meta.code;em.opt.V short nullable uvw1_rate UVW1 Band Count Rate ct/s phot.count;em.UV.200-300nm double nullable uvm2_minor_axis FWHM of UVM2-Band Source along Minor Axis arcsec phys.angSize.sminAxis;em.UV.200-300nm double nullable uvw2_flux_error Uncertainty in Flux in UVW2 Band erg/cm^2/s/Angstrom stat.error;phot.flux.density;em.UV.200-300nm double nullable uvm2_flux_error Uncertainty in Flux in UVM2 Band erg/cm^2/s/Angstrom stat.error;phot.flux.density;em.UV.200-300nm double nullable uvm2_srcdist Distance of Source from Nearest Neighbor in UVM2 Band arcsec phys.angSize;em.UV.200-300nm double nullable u_major_axis FWHM of U-Band Source along Major Axis arcsec phys.angSize.smajAxis;em.opt.U double nullable b_rate_error Uncertainty in B Band Count Rate ct/s stat.error;phot.count;em.opt.B double nullable uvw1mag_ab AB Magnitude in UVW1 Band mag phot.mag;em.UV.200-300nm double nullable uvw2_quality_flags String of Quality Flags for Source in UVW2 Band meta.code.qual;em.UV.200-300nm char nullable b_flux Flux in B Band erg/cm^2/s/Angstrom phot.flux.density;em.opt.B double nullable uvw1_flux_error Uncertainty in Flux in UVW1 Band erg/cm^2/s/Angstrom stat.error;phot.flux.density;em.UV.200-300nm double nullable uvm2_extended_flag Flag [1] Indicates Extended Source in UVM2 Band meta.code;src;phys.angSize;em.UV.200-300nm short nullable umag_vega_error Uncertainty in Vega (Johnson) Magnitude in U Band mag stat.error;phot.mag;em.opt.U double nullable obsid Unique Observation Identifier meta.id;obs char nullable v_extended_flag Flag [1] Indicates Extended Source in V Band meta.code;src;phys.angSize;em.opt.V short nullable vmag_vega Vega (Johnson) Magnitude in V Band mag phot.mag;em.opt.V double nullable uvm2_snr Significance of Source Detection in UVM2 Band sigma stat.snr;em.UV.200-300nm double nullable uvw2_major_axis FWHM of UVW2-Band Source along Major Axis arcsec phys.angSize.smajAxis;em.UV.200-300nm double nullable u_snr Significance of Source Detection in U Band sigma stat.snr;em.opt.U double nullable uvw1mag_vega Vega (Johnson) Magnitude in UVW1 Band mag phot.mag;em.UV.200-300nm double nullable uvw2_rate UVW2 Band Count Rate ct/s phot.count;em.UV.200-300nm double nullable uvw2mag_vega Vega (Johnson) Magnitude in UVW2 Band mag phot.mag;em.UV.200-300nm double nullable u_flux_error Uncertainty in Flux in U Band erg/cm^2/s/Angstrom stat.error;phot.flux.density;em.opt.U double nullable v_quality_flags String of Quality Flags for Source in V Band meta.code.qual;em.opt.V char nullable n_summary Unique Observation ID Reference Number meta.code int nullable bmag_vega_error Uncertainty in Vega (Johnson) Magnitude in B Band mag stat.error;phot.mag;em.opt.B double nullable uvw2_snr Significance of Source Detection in UVW2 Band sigma stat.snr;em.UV.200-300nm double nullable v_rate V Band Count Rate ct/s phot.count;em.opt.V double nullable uvm2_major_axis FWHM of UVM2-Band Source along Major Axis arcsec phys.angSize.smajAxis;em.UV.200-300nm double nullable b_minor_axis FWHM of B-Band Source along Major Axis arcsec phys.angSize.sminAxis;em.opt.B double nullable u_minor_axis FWHM of U-Band Source along Minor Axis arcsec phys.angSize.sminAxis;em.opt.U double nullable vmag_ab AB Magnitude in V Band mag phot.mag;em.opt.V double nullable n_obsid Number of Separate Detections of Source meta.number;obs int nullable v_rate_error Uncertainty in V Band Count Rate ct/s stat.error;phot.count;em.opt.V double nullable b_extended_flag Flag [1] Indicates Extended Source in B Band meta.code;src;phys.angSize;em.opt.B short nullable uvw2_sky_image Flag [1] Indicates Derived from Summed UVW2 Exposure from Stacked Sky Images meta.code;em.UV.200-300nm short nullable uvw2_extended_flag Flag [1] Indicates Extended Source in UVW2 Band meta.code;src;phys.angSize;em.UV.200-300nm short nullable uvm2_sky_image Flag [1] Indicates Derived from Summed UVM2 Exposure from Stacked Sky Images meta.code;em.UV.200-300nm short nullable uvm2mag_vega Vega (Johnson) Magnitude in UVM2 Band mag phot.mag;em.UV.200-300nm double nullable b_flux_error Uncertainty in Flux in B Band erg/cm^2/s/Angstrom stat.error;phot.flux.density;em.opt.B double nullable