IRASSSC ivo://nasa.heasarc/irasssc NASA/GSFC HEASARC Kleinmann et al. 2026-10-09 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Survey Source The Infrared Astronomical Satellite (IRAS) Serendipitous Survey Catalog (SSC) is a catalog of 12, 25, 60 and 100 micron photometric observations of 43,866 point-like sources detected fortuitiously in the IRAS Pointed Observation program. The main objective was to take advantage of the longer-than-nominal integration time per source to extend the detection threshold relative to that of the IRAS Point Source Catalog (PSC); about three-fourths of the SSC sources do not appear in the PSC. From 1813 Pointed Observation fields, the effective sky coverage is 1108 square degrees. Relative to the PSC, the SSC is characterized by: enhanced sensitivity (by a factor of about 4) in all four wavelength bands; excellent reliability in uncrowded fields; uneven sky coverage and completeness; reduced positional accuracy; improved photometric accuracy; much greater depth in crowded fields at the expense of reliability and accuracy. More information about the SSC data processing, the catalog format, and an analysis are given in the Explanatory Supplement to the IRAS Serendipitous Survey Catalog. This Browse table was created by the HEASARC in December 2006 based on CDS table II/126, the file sources.dat. More information, e.g., on counterparts in other catalogs to the SSC sources, is available in other files in the directory <a href="https://cdsarc.cds.unistra.fr/ftp/cats/II/126/">https://cdsarc.cds.unistra.fr/ftp/cats/II/126/</a> This is a service provided by NASA HEASARC . 1986SSC...C......0K https://heasarc.gsfc.nasa.gov/W3Browse/all/irasssc.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=irasssc& GET text/xml 180 99999 true 180.88957206 -85.8068186 0.25 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=irasssc GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_irasssc&Action=More+Options&Action=Parameter+Search&ConeAdd=1 IRAS 0.25 Infrared public irasssc IRAS Serendipitous Survey Catalog name IRAS/SSC 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 flux_12um Averaged Non-Color-Corrected Flux Density, 12um (Jy) Jy phot.flux.density;em.IR.8-15um double nullable flux_25um Averaged Non-Color-Corrected Flux Density, 25um (Jy) Jy phot.flux.density;em.IR.15-30um double nullable flux_60um Averaged Non-Color-Corrected Flux Density, 60um (Jy) Jy phot.flux.density;em.IR.30-60um double nullable flux_100um Averaged Non-Color-Corrected Flux Density, 100um (Jy) Jy phot.flux.density;em.IR.60-100um double nullable confusion_flag_25um Number of Sources in Confusion Window, 25um meta.code short nullable flux_ratio_100um Ratio of Confirmed Flux Density to Reference Flux Density, 100um phot.flux.density;em.IR.60-100um;arith.ratio float nullable delta_ra_100um Right Ascension Offset of Source at 100um (arcsec) arcsec pos.angDistance;em.IR.60-100um short nullable flux_ratio_12um Ratio of Confirmed Flux Density to Reference Flux Density, 12um phot.flux.density;em.IR.8-15um;arith.ratio float nullable rel_error_flux_60um Percent Relative Flux Density Uncertainty, 60um percent stat.error;phot.flux.density;em.IR.30-60um short nullable rel_error_flux_100um Percent Relative Flux Density Uncertainty, 100um percent stat.error;phot.flux.density;em.IR.60-100um short nullable rel_error_flux_25um Percent Relative Flux Density Uncertainty, 25um percent stat.error;phot.flux.density;em.IR.15-30um short nullable delta_dec_25um Declination Offset of Source at 25um (arcsec) arcsec pos.angDistance;em.IR.15-30um short nullable local_snr_100um Local Signal-to-Noise Ratio, 100um stat.snr;em.IR.60-100um float nullable rel_error_flux_12um Percent Relative Flux Density Uncertainty, 12um percent stat.error;phot.flux.density;em.IR.8-15um short nullable corr_coeff_60um Point Source Correlation Coefficient, 60um stat.correlation;em.IR.30-60um char nullable corr_coeff_12um Point Source Correlation Coefficient, 12um stat.correlation;em.IR.8-15um char nullable corr_coeff_100um Point Source Correlation Coefficient, 100um stat.correlation;em.IR.60-100um char nullable local_snr_12um Local Signal-to-Noise Ratio, 12um stat.snr;em.IR.8-15um float nullable delta_dec_100um Declination Offset of Source at 100um (arcsec) arcsec pos.angDistance;em.IR.60-100um short nullable number_id Number of Positional Associations short nullable pa_error_ellipse Uncertainty Ellipse Position Angle (degree, East of North) degree stat.error;pos.posAng short nullable quality_flag_25um Flux Density Quality, 25um meta.code.qual;phot.flux.density;em.IR.15-30um short nullable confusion_flag_12um Number of Sources in Confusion Window, 12um meta.code short nullable delta_dec_12um Declination Offset of Source at 12um (arcsec) arcsec pos.angDistance;em.IR.8-15um short nullable bii Galactic Latitude degree pos.galactic.lat double nullable corr_coeff_25um Point Source Correlation Coefficient, 25um stat.correlation;em.IR.15-30um char nullable delta_ra_12um Right Ascension Delta, 12um (arcsec) arcsec pos.angDistance;em.IR.8-15um short nullable confusion_flag_100um Number of Sources in Confusion Window, 100um meta.code short nullable quality_flag_12um Flux Density Quality, 12um meta.code.qual;phot.flux.density;em.IR.8-15um short nullable quality_flag_60um Flux Density Quality, 60um meta.code.qual;phot.flux.density;em.IR.30-60um short nullable ref_grid_number Reference Grid Number int nullable delta_dec_60um Declination Offset of Source at 60um (arcsec) arcsec pos.angDistance;em.IR.30-60um short nullable quality_flag_100um Flux Density Quality, 100um meta.code.qual;phot.flux.density;em.IR.60-100um short nullable delta_ra_60um Right Ascension Offset of Source at 60um (arcsec) arcsec pos.angDistance;em.IR.30-60um short nullable local_snr_60um Local Signal-to-Noise Ratio, 60um stat.snr;em.IR.30-60um float nullable id_type Type of Object src.class short nullable local_snr_25um Local Signal-to-Noise Ratio, 25um stat.snr;em.IR.15-30um float nullable flux_ratio_25um Ratio of Confirmed Flux Density to Reference Flux Density, 25um phot.flux.density;em.IR.15-30um;arith.ratio float nullable flux_ratio_60um Ratio of Confirmed Flux Density to Reference Flux Density, 60um phot.flux.density;em.IR.30-60um;arith.ratio float nullable confusion_flag_60um Number of Sources in Confusion Window, 60um meta.code short nullable delta_ra_25um Right Ascension Offset of Source at 25um (arcsec) arcsec pos.angDistance;em.IR.15-30um short nullable lii Galactic Longitude degree pos.galactic.lon 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