RASS2RXS ivo://nasa.heasarc/rass2rxs NASA/GSFC HEASARC Boller et al. 2026-10-09 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Survey Source This database table contains the Second ROSAT All-Sky Survey Point Source Catalog (2RXS). This is the second publicly released ROSAT catalog of point-like sources obtained from the ROSAT All-Sky Survey (RASS) observations performed with the Position-Sensitive Proportional Counter (PSPC) between June 1990 and August 1991. It is an extended, revised, and combined version of the RASS <a href="/W3Browse/rosat/rassbsc.html">Bright</a> and <a href="/W3Browse/rosat/rassfsc.html">Faint Source Catalog</a>s. Utilizing the latest RASS processing, this catalog includes more than 135,000 X-ray detections in the 0.1-2.4 keV energy band down to a likelihood threshold of 6.5. Additional information can be found at <a href="http://www.mpe.mpg.de/ROSAT/2RXS/">http://www.mpe.mpg.de/ROSAT/2RXS/</a>. This table was created by the HEASARC in March, 2017, based on <a href="https://cdsarc.cds.unistra.fr/ftp/cats/J/A+A/588/A103">CDS Catalog J/A+A/588/A103</a> file cat2rxs.dat.gz. This is a service provided by NASA HEASARC . 2016A&A...588A.103B https://heasarc.gsfc.nasa.gov/W3Browse/all/rass2rxs.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=rass2rxs& GET text/xml 180 99999 true 183.50287 87.19713 0.0166666666666667 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=rass2rxs GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_rass2rxs&Action=More+Options&Action=Parameter+Search&ConeAdd=1 ROSAT 0.0166666666666667 X-ray public rass2rxs Second ROSAT All-Sky Survey Point Source Catalog (2RXS) name IAU 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 count_rate Source Count Rate ct/s phot.count;em.X-ray double nullable count_rate_error Error in Source Count Rate ct/s stat.error;phot.count;em.X-ray double nullable exposure Source Exposure Time s time.duration;obs.exposure double nullable source_extent Source Extent pixel phys.angSize;arith.ratio double nullable source_extent_prob Probability of the Source Extent stat.likelihood double nullable source_quality_flag Source Quality Flag (0=Good) meta.code short nullable hardness_ratio_1 Hardness Ratio 1 phot.flux;arith.ratio;em.X-ray double nullable hardness_ratio_2 Hardness Ratio 2 phot.flux;arith.ratio;em.X-ray 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 sdss_lambda SDSS Ecliptic Longitude degree pos.ecliptic.lat double nullable band_a_counts Source Counts in Band A ct phot.count;em.X-ray double nullable bb_dof Number of Degrees of Freedom in the Black-Body Fit meta.number short nullable flem_number_ctrprts Number of Counterparts in the Flemming Catalog of White Dwarfs within 60 arcsec meta.number short nullable tworxs_dec 2RXS Declination degree pos.eq.dec double nullable flem_nearest Source Number of Nearest Flemming Counterpart meta.id short nullable wdcat_ra WD Right Ascension degree pos.eq.ra double nullable sdss_nearest Source Number of SDSS Nearest Counterpart meta.id short nullable wdcat_number_ctrprts Number of Counterparts in the Catalog of White Dwarfs within 60 arcsec meta.number short nullable bb_chi2 Chi^2 for the Black-Body Fit stat.fit.chi2 double nullable onerxh_number_ctrprts Number of Counterparts in the 1RXH Catalog within 120 arcsec meta.number short nullable onesxps_source_number Source Number in 1SXPS Catalog meta.id int nullable tycho2_tyc3_number TYC3 Source Number meta.id short nullable remarks Remarks Concerning Nearby Source Originating from ML-Detection meta.note char nullable flem_separation Distance to Nearest Flemming Counterpart arcsec pos.angDistance;src.orbital double nullable x_sky_pixel X Sky Coordinates (0.5 arcsec) pixel pos.cartesian.x;instr.det double nullable unique_flag Unique Flag meta.code short nullable wdcat_vsphot WD V Multichannel Spectrophotometry Magnitude mag phot.mag;em.opt.V double nullable tycho2_number_ctrprts Number of Counterparts in the Tyc2 Catalog meta.number short nullable hardness_ratio_1_error Error in Hardness Ratio 1 stat.error;phot.flux;arith.ratio;em.X-ray double nullable bsc_source_number BSC Catalog Source Number meta.id short nullable excess_variance Normalized Excess Variance stat.variance double nullable number_pts_gtrthan_6s Number of Data Points with Exposure Times Greater Than 6s meta.number short nullable atnf_nearest Source Number of Nearest ATNF Counterpart meta.id short nullable mekal_flux Absorption-Corrected Flux Mekal Fit erg/s/cm^2 phot.flux;em.X-ray double nullable mekal_temperature_error Error in Temperature of the Mekal Fit stat.error double nullable plaw_nh_error Error in Neutral Hydrogen Density of PL Fit cm^-2 stat.error double nullable fuhr_source_number FUH Object Number meta.id char nullable flem_type Flemming Object Type src.class char nullable lmxb_ra LMXBCAT Right Ascension degree pos.eq.ra double nullable onerxh_nearest Source Number of Nearest 1RXH Counterpart meta.id int nullable onerxs_bkg_count_rate Background Count Rate from 1RXS ct/s/arcmin^2 arith.rate;instr.background double nullable max_count_rate_6s_error Error in Maximum Count Rate for Light curves with Exposures of Less Than 6s ct/s stat.error double nullable "time" Start Time of Exposure When Source Is within FOV and Detector on mjd time.start;obs double nullable number_pts_lessthan_6s Number of Data Points with Exposure Times Less Than 6s meta.number short nullable tycho2_ra Tyc2 Right Ascension degree pos.eq.ra double nullable max_count_rate Maximum Count Rate ct/s phot.count;em.X-ray double nullable tworxp_count_rate_error 2RXP Count Rate Error ct/s stat.error double nullable extended_region_flag Flag Indicates Extended Emission Regions (0=yes 1=no) (Masked) meta.code short nullable onesxps_det_flag 1SXPS Total (0.3-10keV) Band Detection Flag meta.code short nullable lmxb_name LMXBCAT Source Designation meta.id char nullable plaw_norm Normalization for PL Fit stat.fit.param double nullable band_d_tot_counts Counts in Band D ct phot.count;em.X-ray double nullable onesxps_nearest Source Number of Nearest 1SXPS Counterpart meta.id int nullable onerxs_hr_2_error Error in HR2 in 1RXS stat.error double nullable onesxps_medium_det_flag 1SXPS Medium (2-2keV) Band Detection Flag meta.code short nullable beta Ecliptic Latitutde degree pos.ecliptic.lon double nullable mekal_nh Neutral Hydrogen Density for the Mekal Fit cm^-2 phys.columnDensity double nullable wdcat_separation Distance to Nearest WD Counterpart arcsec pos.angDistance;src.orbital double nullable x_pixel_error 1-Sigma Error in X Image Coordinate pixel stat.error;pos.cartesian.x;instr.pixel double nullable hmxb_alt_name HMXBCAT Alternative Source Designation meta.id char nullable tworxs_nearby_flag Nearby Flag of 2RXS Nearest Counterpart (0=Best) meta.code short nullable band_b_counts Source Counts in Band B ct phot.count;em.X-ray double nullable bsc_ra BSC Right Ascension degree pos.eq.ra double nullable atnf_number_ctrprts Number of Counterparts in the Pulsar Catalog (ATNF) within 60 arcsec meta.number short nullable flem_dec Flemming Declination degree pos.eq.dec double nullable veron_name VV10 Source Designation meta.id char nullable threexmm_count_rate_err 3XMM EP8 Count Rate Error ct/s stat.error double nullable tworxs_y_pixel_sky_bkg1 Y Sky Coordinate of Background Center 1 pixel pos.cartesian.y;instr.det double nullable tworxs_skyfield_number Number of Sky Field of 2RXS Nearest Counterpart meta.id;obs.field int nullable flem_wfc_detection_flag Flag [YN] Indicates Flemming Wide Field Camera Detection meta.code char nullable hmxb_ra HMXBCAT Right Ascension degree pos.eq.ra double nullable flem_ra Flemming Right Ascension degree pos.eq.ra double nullable band_b_bkg_counts Background Band B with Other Catalog Entries Excised ct instr.background;em.opt.B;meta.table double nullable lmxb_separation Distance to Nearest LMXBCAT Counterpart arcsec pos.angDistance;src.orbital double nullable tworxs_y_pixel_sky_bkg2 Y Sky Coordinate of Background Center 2 pixel pos.cartesian.y;instr.det double nullable mekal_nh_error Error in Neutral Hydrogen Density for the Mekal Fit cm^-2 stat.error double nullable plaw_flux Absorption-Corrected Flux of PL Fit erg/s/cm^2 phot.flux;em.X-ray double nullable skyfield_number Sky Field Number (SEQ_ID) meta.id;obs int nullable y_pixel Y Image Coordinate (45 arcsec) pixel pos.cartesian.y;instr.pixel double nullable tworxs_skyfield_src_num Field Detection Number of 2RXS Nearest Counterpart meta.id;obs.field short nullable atnf_pulse_period ATNF Pulsar Period s time.period char nullable veron_type Flag [BAQ] Indicates VV10 Object Type src.class char nullable fuhr_name FUH Source Designation meta.id char nullable number_pts_in_lc Number of Data Points in the Light Curve meta.number short nullable tycho2_separation Distance to Nearest Tyc2 Counterpart arcsec pos.angDistance;src.orbital double nullable excess_var_6s_error Uncertainty in Excess Variance for Light Curves with Less Than 6s Exposure stat.error double nullable lmxb_nearest Source Number of Nearest LMXBCAT Counterpart meta.id short nullable tworxp_nearest Source Number of Nearest Counterpart in the 2RXP Catalog meta.id int nullable onerxs_name Source Designation in the 1RXS Catalog meta.id char nullable tworxs_selected_bkg 2RXS Selected Background meta.code short nullable tycho2_vmag Tyc2 VT Magnitude mag phot.mag;em.opt.V double nullable lc_counts Number of Counts Calculated from the Light Curve Analysis ct phot.count double nullable count_rate_6s Count Rate for Light Curve with Less Than 6s Exposure ct/s phot.count;em.X-ray double nullable xmmsl1_sb_count_rate XMMSL1 Count Rate, Energy Band 0.5-2keV c/s phot.count;em.X-ray double nullable extraction_radius_frac Analyzed Fraction of Cut Radius stat.fit.param double nullable hmxb_name HMXBCAT Source Designation meta.id char nullable bii Galactic Latitude degree pos.galactic.lat double nullable onerxs_exposure Source Exposure Time in 1RXS s time.duration;obs.exposure int nullable max_count_rate_6s Maximum Count Rate for Light curves with Exposures of Less Than 6s ct/s phot.count;em.X-ray double nullable sdss_ra SDSS Right Ascension degree pos.eq.ra double nullable onesxps_count_rate Swift Total (0.3-10 keV)-Band Count Rate ct/s phot.count;em.X-ray double nullable veron_number_ctrprts Number of Counterparts in the VV10 Catalog within 60 arcsec meta.number short nullable hmxb_separation Distance of Nearest HMXBCAT Counterpart arcsec pos.angDistance;src.orbital double nullable hmxb_nearest Source Number of Nearest HMXBCAT Counterpart meta.id short nullable plaw_nh Neutral Hydrogen Density of PL Fit cm^-2 phys.columnDensity double nullable threexmm_flux_error 3XMM Flux Error erg/s/cm^2 stat.error double nullable min_count_rate_6s_error Error in Minimum Count Rate for Light Curves with Exposures of Less Than 6s ct/s stat.error double nullable excess_variance_error 1-Sigma Uncertainty in Normalized Excess Variance stat.error double nullable wdcat_dec WD Declination degree pos.eq.dec double nullable min_count_rate Minimum Count Rate ct/s phot.count;em.X-ray double nullable veron_redshift VV10 Redshift src.redshift;pos.heliocentric double nullable sdss_dec SDSS Declination degree pos.eq.dec double nullable xmmsl1_sb_count_rate_err XMMSL1 Count Rate Error, 0.5-2keV c/s stat.error double nullable tycho2_bmag Tyc2 BT Magnitude mag phot.mag;em.opt.B double nullable atnf_name ATNF Pulsar Designation meta.id char nullable threexmm_number_ctrprts Number of 3XMM Counterparts within 60 arcsec meta.number short nullable tycho2_tyc1_number TYC1 Source Number meta.id short nullable xmmsl1_name Source Designation in the XMM Slew Survey meta.id char nullable hmxb_vmag HMXBCAT V Magnitude mag phot.mag;em.opt.V double nullable excess_var_6s Excess Variance for Light Curves with Less Than 6s Exposure stat.variance double nullable veron_ra VV10 Right Ascension degree pos.eq.ra double nullable onesxps_exposure 1SXPS Source Exposure Time s time.duration;obs.exposure int nullable counts_error Error in the Source Counts ct stat.error;phot;em.X-ray double nullable band_a_bkg_counts Background Band A with Other Catalog Entries Excised ct instr.background;meta.table double nullable atnf_ra ATNF Right Ascension degree pos.eq.ra double nullable mekal_norm Normalization for the Mekal Fit stat.fit.param double nullable mean_count_rate Mean Count Rate ct/s phot.count;em.X-ray double nullable onesxps_hard_det_flag 1SXPS Hard (2-10keV) Band Detection Flag meta.code short nullable mekal_chi2 Chi^2 for the Mekal Fit stat.fit.chi2 double nullable spect_plot_flag Flag [01] Indicates Graphical Illustration of Spectral Fit Available meta.code short nullable extraction_radius Source Extraction Radius in Sky Pixels pixel phys.angSize short nullable threexmm_name Source Designation in the 3XMM Catalog meta.id char nullable onerxh_count_rate_error Error in 1RXH Source Count Rate ct/s stat.error double nullable onerxs_hr_1 1RXS Hardness Ratio 1 phot.flux;arith.ratio double nullable onerxh_count_rate 1RXH Source Count Rate ct/s phot.count;em.X-ray double nullable threexmm_ra 3XMM Right Ascension degree pos.eq.ra double nullable excess_var_lessthan_6 Excess Variance for Light Curves with Exposures of Less Than 6s stat.variance double nullable atnf_dec ATNF Declination degree pos.eq.dec double nullable veron_source_number VV10 Running Catalog Source Number meta.id int nullable lmxb_dec LMXBCAT Declination degree pos.eq.dec double nullable mean_count_rate_error Standard Deviation of Mean Count Rate ct/s stat.error double nullable number_pts_lessthan_1s Number of Data Points with Exposure Times Less Than 1s meta.number short nullable tworxs_nearest_src_index Index of the Nearest 2RXS Counterpart meta.id int nullable fuhr_separation Distance to Nearest FUH Counterpart arcsec pos.angDistance;src.orbital double nullable onesxps_separation Distance to Nearest 1SXPS Counterparts arcsec pos.angDistance;src.orbital double nullable plaw_count_rate Count Rate Obtained from the PL Fit ct/s phot.count;em.X-ray double nullable tycho2_tyc2_number TYC2 Source Number meta.id int nullable entry_number Sequential Identification Number for Each Entry in Catalog meta.id int nullable bsc_vmag BSC V Magnitude mag phot.mag;em.opt.V double nullable fuhr_number_ctrprts Number of Counterparts in Fuhrmeister and Schmitt Catalog within 60 arcsec meta.number short nullable bsc_separation Distance to Nearest BSC Counterpart arcsec pos.angDistance;src.orbital double nullable plaw_dof Number of Degrees of Freedom in the PL Fit meta.number short nullable tworxs_bkg_count_rate Background Count Rate from 2RXS ct/s/arcmin^2 arith.rate;instr.background double nullable bsc_number_ctrprts Number of Counterparts in the Catalog of Bright Stars (BSC) within 300 arcsec meta.number short nullable plaw_number_data_pts Number of Data Points Used in the PL Fit meta.number short nullable tworxs_x_pixel_sky_bkg1 X Sky Coordinate of Background Center 1 pixel pos.cartesian.x;instr.det double nullable band_a_tot_counts Counts in Band A ct phot.count;em.X-ray double nullable band_d_counts Source Counts in Band D ct phot.count;em.X-ray double nullable onerxs_ra 1RXS Right Ascension degree pos.eq.ra double nullable excess_variance_sigma Excess Variance sigma stat.variance double nullable veron_dec VV10 Declination degree pos.eq.dec double nullable hd_source_number Henry Draper Catalog Source Number meta.id int nullable max_amplitude Maximum Amplitude Variability src.var.amplitude double nullable onerxh_ra 1RXH Right Ascension degree pos.eq.ra double nullable onerxh_dec 1RXH Declination degree pos.eq.dec double nullable lmxb_alt_name LMXBCAT Alternative Source Designation meta.id char nullable remaining_bkg_area Remaining Background Area arcmin^2 instr.background double nullable flem_count_rate_error Error in the Flemming Count Rate ct/s stat.error double nullable onerxs_count_rate Source Count Rate in 1RXS ct/s phot.count;em.X-ray double nullable wdcat_vmag WD V Magnitude mag phot.mag;em.opt.V double nullable total_photons Total Number of Photons Read from PET and Analyzed by Max. Likelihood Algorithm phot.count;em.X-ray short nullable mekal_number_data_pts Number of Data Points Used in Mekal Fit meta.number short nullable xmmsl1_ra XMMSL1 Right Ascension degree pos.eq.ra double nullable tworxs_x_pixel_sky_bkg2 X Sky Coordinate of Background Center 2 pixel pos.cartesian.x;instr.det double nullable onesxps_dec 1SXPS Declination degree pos.eq.dec double nullable sum_count_rate_sigma Sum of Count Rate and Standard Deviation stat.fit.param double nullable band_b_tot_counts Counts in Band B ct phot.count;em.X-ray double nullable nh_gal Galactic Neutral Hydrogen Density cm^-2 phys.columnDensity double nullable mekal_norm_error Error in Normalization for the Mekal Fit stat.error double nullable onerxh_exposure 1RXH Source Exposure Time s time.duration;obs.exposure int nullable mekal_temperature Temperature of the Mekal Fit phys.temperature double nullable y_sky_pixel Y Sky Coordinates (0.5 arcsec) pixel pos.cartesian.y;instr.det double nullable bb_nh Neutral Hydrogen Density for the Black-Body Fit cm^-2 phys.columnDensity double nullable tworxp_exposure 2RXP Source Exposure Time s time.duration;obs.exposure int nullable onerxh_name 1RXH Source Designation meta.id char nullable hardness_ratio_2_error Error in Hardness Ratio 2 stat.error;phot.flux;arith.ratio;em.X-ray double nullable xmmsl1_number_ctrprts Number of Counterparts in the XMM Slew Survey within 60 arcsec meta.number short nullable onerxh_separation Distance to Nearest 1RXH Counterpart arcsec pos.angDistance;src.orbital double nullable tycho2_source_number Tyc2 Catalog Source Number meta.id int nullable fuhr_nearest Source Number of Nearest FUH Counterpart meta.id short nullable mekal_dof Number of Degrees of Freedom in Mekal Fit meta.number short nullable onerxs_separation Distance to Nearest 1RXS Counterpart arcsec pos.angDistance;src.orbital double nullable lc_chi2 Chi^2 from the LC Analysis stat.fit.chi2 double nullable end_time End Time of Exposure When Source Is within FOV and Detector on mjd time.end;obs double nullable skyfield_source_number Source Number in the Specified Sky Field meta.id;src short nullable lambda Ecliptic Longitude degree pos.ecliptic.lat double nullable tycho2_dec Tyc2 Declination degree pos.eq.dec double nullable threexmm_flux 3XMM Flux erg/s/cm^2 phot.flux;em.X-ray double nullable plaw_chi2 Chi^2 of the PL Fit stat.fit.chi2 double nullable bsc_spect_type BSC Spectral Type src.spType char nullable var_flag Variability Flag (0=Good, 1=Background) meta.code;src.var short nullable tworxs_subfield_det_cell Sub-Field Detection Cell of 2RXS Nearest Counterpart meta.code short nullable onesxps_count_rate_error Error in Swift Total (0.3-10 keV)-Band Count Rate ct/s stat.error double nullable onerxs_counts_error Error in Background-Corrected Source Counts in 1RXS stat.error double nullable sdss_number_ctrprts Source Number of the Nearest Counterpart in the Sloan Catalog meta.number short nullable onerxs_dec 1RXS Declination degree pos.eq.dec double nullable xmmsl1_dec XMMSL1 Declination degree pos.eq.dec double nullable sdss_name SDSS Object Designation meta.id char nullable tworxs_number_ctrprts Number of Counterparts in the 2RXS Catalog within 60 arcsec meta.number short nullable tworxs_nearest_src_num Source Number of 2RXS Counterpart meta.id int nullable sdss_beta SDSS Ecliptic Latitude degree pos.ecliptic.lon double nullable onerxs_det_likelihood Detection Likelihood in 1RXS stat.likelihood short nullable onesxps_number_ctrprts Number of Counterparts in Swift 1SXPS Catalog within 120 arcsec meta.number short nullable veron_nearest Source Number of VV10 Nearest Counterpart meta.id int nullable vignetting_factor Vignetting Correction Factor instr.param double nullable count_rate_6s_error Standard Deviation of Light Curves with Less Than 6s Exposure ct/s stat.error double nullable mekal_count_rate Count Rate Obtained from the Mekal Fit ct/s phot.count;em.X-ray double nullable max_count_rate_error Error in Maximum Count Rate ct/s stat.error double nullable bb_number_data_pts Number of Data Points Used in the Black-Body Fit meta.number short nullable nearby_src_det_flag Detection Flag of Nearby Sources (0=Best) meta.code short nullable bb_flux Absorption-Corrected Flux from the Black-Body Fit erg/s/cm^2 phot.flux;em.X-ray double nullable tworxs_separation Distance to 2RXS Counterpart arcsec pos.angDistance;src.orbital double nullable threexmm_separation Distance of Nearest 3XMM Counterpart arcsec pos.angDistance;src.orbital double nullable source_extent_error Error in the Source Extent pixel stat.error double nullable tworxp_count_rate 2RXP Count Rate ct/s phot.count;em.X-ray double nullable onerxh_snr 1RXH Signal-to-Noise Ratio stat.snr double nullable fuhr_dec FUH Declination degree pos.eq.dec double nullable bb_nh_error Error in Neutral Hydrogen Density for the Black-Body Fit cm^-2 stat.error double nullable tworxs_count_rate Source Count Rate of 2RXS Nearest Counterpart ct/s phot.count;em.X-ray double nullable onerxs_count_rate_error Error in Source Count Rate in 1RXS ct/s stat.error double nullable band_c_counts Source Counts in Band C ct phot.count;em.X-ray double nullable bsc_dec BSC Declination degree pos.eq.dec double nullable onerxs_hr_1_error Error in HR1 in 1RXS stat.error double nullable lc_plot_flag Flag [01] Indicates Graphical Illustration of Light Curve Available meta.code short nullable onerxs_hr_2 1RXS Hardness Ratio 2 phot.flux;arith.ratio double nullable hmxb_dec HMXBCAT Declination degree pos.eq.dec double nullable hmxb_number_ctrprts Number of Counterparts in High Mass X-Ray Binaries (HMXBCAT) within 60 arcsec meta.number short nullable veron_vmag VV10 V Magnitude mag phot.mag;em.opt.V double nullable clock_time Clock Start Time of Exposure When Source Is within FOV and Detector on s time.start;obs.exposure double nullable band_d_bkg_counts Background Band D with Other Catalog Entries Excised ct instr.background;meta.table double nullable threexmm_nearest Source Number of Nearest Counterpart in the 3XMM Catalog meta.id int nullable counts Background-Corrected Source Counts ct phot;em.X-ray double nullable plaw_photon_index_error Error in Photon Index for PL Fit stat.error double nullable lii Galactic Longitude degree pos.galactic.lon double nullable onerxs_counts Background-Corrected Source Counts in 1RXS phot.count;em.X-ray double nullable xmmsl1_nearest Source Number of Nearest Counterpart in the XMM Slew Survey meta.id int nullable onesxps_ra 1SXPS Right Ascension degree pos.eq.ra double nullable wdcat_name WD Catalog Source Designation meta.id char nullable min_count_rate_error Error in Minimum Count Rate ct/s stat.error double nullable atnf_pulsar_type ATNF Pulsar Type src.class char nullable tworxp_obsid Field Number of 2RXP Counterpart meta.id;obs char nullable xmmsl1_bb_count_rate_err XMMSL1 Broad-Band Count Rate Error ct/s stat.error double nullable bkg_in_extr_reg Background in Source Extraction Region pixel^-1 instr.background double nullable wdcat_nearest Source Number of Nearest WD Counterpart meta.id int nullable counts_notused_6 Number of Counts for Light Curves with Exposures of Less Than 6s Not Used ct phot.count double nullable bb_norm_error Error in Normalization for the Black-Body Fit stat.error double nullable band_c_bkg_counts Background Band C with Other Catalog Entries Excised ct instr.background;meta.table double nullable lmxb_number_ctrprts Number of Counterparts in LMXBCAT within 60 arcsec meta.number short nullable flem_name Source Designation in the Flemming Catalog meta.id char nullable bsc_nearest Source Number of Nearest BSC Counterpart meta.id short nullable veron_separation Distance to Nearest VV10 Counterpart arcsec pos.angDistance;src.orbital double nullable clock_end_time Clock End Time of Exposure When Source Is within FOV and Detector on s time.end;obs.exposure double nullable bb_count_rate Count Rate for the Black-Body Fit ct/s phot.count;em.X-ray double nullable tworxp_dec 2RXP Declination degree pos.eq.dec double nullable bb_temperature_error Error in Temperature of the Black-Body Fit stat.error double nullable lmxb_vmag LMXBCAT V Magnitude mag phot.mag;em.opt.V double nullable min_count_rate_6s Minimum Count Rate for Light Curves with Exposures of Less Than 6s ct/s phot.count;em.X-ray double nullable xmmsl1_separation Distance of Nearest XMMSL1 Counterpart arcsec pos.angDistance;src.orbital double nullable threexmm_dec 3XMM Declination degree pos.eq.dec double nullable flem_count_rate Flemming Count Rate ct/s phot.count;em.X-ray double nullable tworxs_ra 2RXS Right Ascension degree pos.eq.ra double nullable detection_likelihood Detection Likelihood stat.likelihood;em.X-ray double nullable tworxp_separation Distance of 2RXP Nearest Counterpart arcsec pos.angDistance;src.orbital double nullable threexmm_count_rate 3XMM EP8 Count Rate ct/s phot.count;em.X-ray double nullable bb_temperature Temperature of the Black-Body Fit phys.temperature double nullable plaw_norm_error Error in Normalization for PL Fit stat.error double nullable onesxps_total_det_flag 1SXPS Total (0.3-10keV) Band Detection Flag meta.code short nullable tycho2_nearest Source Number of Nearest Tyc2 Counterpart meta.id int nullable onerxs_nearest Source Number of Nearest Counterpart in the 1RXS Catalog meta.id int nullable plaw_chi2_reduced Reduced Chi^2 of the PL Fit stat.fit.chi2 double nullable tworxp_ra 2RXP Right Ascension degree pos.eq.ra double nullable tworxp_number_ctrprts Number of 2RXP Counterparts within 300 arcsec meta.number short nullable sdss_separation Distance to Nearest SDSS Counterpart arcsec pos.angDistance;src.orbital double nullable plaw_photon_index Photon Index for PL Fit spect.index double nullable tworxs_det_likelihood Detection Likelihood of 2RXS Nearest Counterpart stat.likelihood double nullable y_pixel_error 1-Sigma Error in Y Image Coordinate pixel stat.error;pos.cartesian.y;instr.pixel double nullable onerxs_number_ctrprts Number of 1RXS Counterparts within 60 arcsec meta.number short nullable bb_norm Normalization for the Black-Body Fit stat.fit.param double nullable x_pixel X Image Coordinate (45 arcsec) pixel pos.cartesian.x;instr.pixel double nullable fuhr_ra FUH Right Ascension degree pos.eq.ra double nullable xmmsl1_bb_count_rate XMMSL1 Broad-Band Count Rate ct/s phot.count;em.X-ray double nullable onesxps_soft_det_flag 1SXPS Soft (0.3-1keV) Band Detection Flag meta.code short nullable tworxp_name Source Designation in the 2RXP meta.id char nullable mekal_chi2_reduced Reduced Chi^2 for Mekal Fit stat.fit.chi2 double nullable band_c_tot_counts Counts in Band C ct phot.count;em.X-ray double nullable atnf_separation Distance to Nearest ATNF Counterpart arcsec pos.angDistance;src.orbital double nullable bb_chi2_reduced Reduced Chi^2 for the Black-Body Fit stat.fit.chi2 double nullable