MACS ivo://nasa.heasarc/macs NASA/GSFC HEASARC Tucholke, de Boer, Seitter 2026-04-03 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Star The Magellanic Catalogue of Stars (MACS) is based on scans of ESO Schmidt plates and contains about 244,000 stars covering large areas around the Large Magellanic Cloud (LMC) and the Small Magellanic Cloud (SMC). The positions refer to the FK5 system via the PPM Catalog. A comparison of positions from different plates shows internal errors at a level of 0.15 to o.23 arcseconds; the positional accuracy is estimated to be better than 0.5 arcseconds for 99% of the stars. The limiting blue magnitude of the MACS is less than 16.5 magnitudes, but the catalog is not complete to this level, as only those stars are included which are undisturbed by close neighbors as verified by visual (interactive) screening (in order to obtain a clean astrometric reference). This database table was created at the HEASARC in June 1998 based on the ADC/<a href="https://cdsarc.cds.unistra.fr/ftp/cats/I/221">CDS Catalog I/221</a>. This is a service provided by NASA HEASARC . 1996A&AS..119...91T https://heasarc.gsfc.nasa.gov/W3Browse/all/macs.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=macs& GET text/xml 180 99999 true 83.1461 -77.4447 0.0166666666666667 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=macs GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_macs&Action=More+Options&Action=Parameter+Search&ConeAdd=1 STAR CATALOG 0.0166666666666667 Optical public macs Magellanic Catalog of Stars num_pos Number of Positions Used meta.number;pos short nullable class Browse Object Classification src.class short nullable position_flag Flag Indicates Size of Error in Position meta.code;pos short nullable "__x_ra_dec" System unit vector column double nullable "__y_ra_dec" System unit vector column double nullable "__row" System index column char nullable int_mag Internal Magnitude phot.mag float nullable macs_part Flag Indicates Which Magellanic Cloud (LMC or SMC) meta.code char nullable dec Declination degree pos.eq.dec;meta.main double nullable int_mag_flag Flag Indicates Size of Error in Magnitude meta.code;phot.mag short nullable name Object Designation meta.id;meta.main char nullable bii Galactic Latitude degree pos.galactic.lat double nullable lii Galactic Longitude degree pos.galactic.lon double nullable "__z_ra_dec" System unit vector column double nullable ra Right Ascension degree pos.eq.ra;meta.main double nullable