Einstein2E ivo://nasa.heasarc/einstein2e NASA/GSFC HEASARC Harris et al. 2026-10-09 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Survey Source This is the Einstein Observatory 2E Catalog of Imaging Proportional Counter (IPC) X-Ray Sources which was created by the HEASARC from the CDS Catalog IX/13. This latter catalog was prepared by the CDS in October 1996 based on the Einline version. It is similar to the HEASARC's IPC source catalog which the HEASARC created in the early 1990s directly based on Einstein Observatory Source Catalog tables obtained from the then-extant Astrophysics Data System distributed data archive. The IPC Catalog contains 6816 entries compared to 5948 entries in this catalog, notice. This catalog contains sources with signal-to-noise values of 3.5 and greater from Einstein IPC observations. Note that a single source may have more than one entry in this catalog. This catalog was created by the HEASARC in November 2000 based on the <a href="https://cdsarc.cds.unistra.fr/ftp/cats/IX/13">CDS Catalog IX/13</a> file 2e.dat. This is a service provided by NASA HEASARC . https://heasarc.gsfc.nasa.gov/W3Browse/all/einstein2e.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=einstein2e& GET text/xml 180 99999 true 283.67072083 -78.89371724 0.0333333333333333 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=einstein2e GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_einstein2e&Action=More+Options&Action=Parameter+Search&ConeAdd=1 EINSTEIN 0.0333333333333333 X-ray public einstein2e Einstein Observatory 2E Catalog of IPC X-Ray Sources name 2E Catalog Designation Based on 1950 Coordinates meta.id 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 Corrected Count Rate (ct/s) ct/s phot.count;em.X-ray double nullable count_rate_error Error in Count Rate (ct/s) ct/s stat.error;phot.count;em.X-ray double nullable error_radius Positional Uncertainty (arcsec) arcsec stat.error;pos short 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 rib_edge_code Ribs and Edges Code (RECO) meta.code short nullable source_flags Source Flags [ABHLEI] meta.code char nullable bii Galactic Latitude degree pos.galactic.lat double nullable live_time Field Center Live Time (sec) s time.duration;obs.exposure double nullable sequence_number Einstein Sequence Number (ESN) meta.id;obs.field int nullable lii Galactic Longitude degree pos.galactic.lon double nullable reference_flag Reference and Identification Flag meta.code char nullable snr Signal to Noise Ratio for the Detection stat.snr float nullable off_axis Distance Between Source and Field Center (arcmin) arcmin instr.offset float nullable size_corr Size Correction Factor arith.factor;phys.angSize double nullable alt_name Alternative 2E Catalog Designation meta.id char nullable catalog_number 2E Catalog Number of the Source meta.id;meta.main short nullable field_number Field Number within Sequence meta.id;obs.field short nullable background_counts Background Counts in the Detect Cell ct phot.count;instr.background double nullable net_counts Net Counts in the Detect Cell ct phot.count;em.X-ray double nullable