GC ivo://nasa.heasarc/globclust NASA/GSFC HEASARC Harris 2026-10-09 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Star Cluster This is the Catalog of Parameters for Milky Way Globular Clusters (December 2010 Version) that was compiled by William E. Harris of McMaster University. This is the first update since 2003 and the biggest single revision since the original version of the catalog published in 1996. The list now contains a total of 157 objects classified as globular clusters. Major upgrades have been made especially to the cluster coordinates, metallicities, and structural profile parameters, and the list of parameters now also includes the central velocity dispersion. This table contains basic parameters on distances, velocities, metallicities, luminosities, colors, and dynamical parameters for over 150 objects that are regarded as globular clusters in the Milky Way galaxy. Please acknowledge the use of this catalog in any published work you derive from it. The proper reference to the literature is the published paper (Harris, W.E. 1996, AJ, 112, 1487) which briefly describes the setup of the catalog. When you cite it in your text, please use "Harris 1996 (2010 edition)". The author would also greatly appreciate receiving any new information, in published or preprint form, which would help him to keep the list up to date (contact W. E. Harris at harris@physics.mcmaster.ca). A full discussion of the sources used in the creation of this catalog and of the parameters that it contains can be found in the file: <a href="http://physwww.mcmaster.ca/~harris/mwgc.ref">http://physwww.mcmaster.ca/~harris/mwgc.ref</a>. This table was originally ingested by the HEASARC circa 1995. It was last updated by the HEASARC in February 2014 based on an electronic version (dated December 2010) copied from the file <a href="http://physwww.mcmaster.ca/~harris/mwgc.dat">http://physwww.mcmaster.ca/~harris/mwgc.dat</a>. This is a service provided by NASA HEASARC . 1996AJ....112.1487H https://heasarc.gsfc.nasa.gov/W3Browse/all/globclust.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=globclust& GET text/xml 180 99999 true 225.076875 -82.21369444 0.25 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=globclust GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_globclust&Action=More+Options&Action=Parameter+Search&ConeAdd=1 STAR CATALOG 0.25 Optical public globclust Milky Way Globular Clusters Catalog (December 2010 Version) name Designation of Globular Cluster meta.id;meta.main char nullable alt_name Alternative Designation of Globular Cluster 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 vmag Integrated V Magnitude of the Cluster mag phot.mag;em.opt.V double nullable bv_color B-V Color Index (Uncorrected for Reddening) mag phot.color;em.opt.B;em.opt.V double nullable helio_distance Distance from the Sun kpc pos.distance double nullable metallicity Metallicity: Fe/H phys.abund.Fe 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 log_core_relaxtime Logarithm of Core Relaxation Time (in years) log(yr) time.relax double nullable half_light_radius Half-Light Radius (arcmin) arcmin phys.size.radius double nullable cent_surf_brightness Central Surface Brightness mag/arcsec^2 phot.mag.sb;em.opt.V double nullable z_distance Z Distance Component kpc pos.cartesian.z;pos.galactocentric double nullable galcen_distance Distance from the Center of the Milky Way Galaxy kpc pos.distance double nullable radial_velocity_error Observational (Internal) Uncertainty in Radial Velocity km/s stat.error;spect.dopplerVeloc double nullable lsr_radial_velocity Radial Velocity Relative to Solar Local Standard of Rest (km/s) km/s spect.dopplerVeloc;pos.heliocentric double nullable num_metallicity_measures Number of Measurements Used to Determine Mean Metallicity meta.number short nullable app_distance_mod Apparent Visual Distance Modulus mag phot.mag.distMod double nullable core_radius Core Radius (arcmin) arcmin phys.size.radius double nullable lii Galactic Longitude degree pos.galactic.lon double nullable log_hmr_relaxtime Logarithm of Half-Mass Radius Relaxation Time (in years) log(yr) time.relax double nullable ellipticity Ellipticity (1 - b/a), Projected Axial Ratio src.ellipticity double nullable hb_vmag V Magnitude Level of the Horizontal Branch (or RR Lyraes) mag phot.mag;em.opt.V double nullable bii Galactic Latitude degree pos.galactic.lat double nullable reddening Foreground Reddening mag phot.color.excess double nullable central_sigma_v Central Velocity Dispersion (km/s) km/s phys.veloc.dispersion double nullable central_sigma_v_error Uncertainty in Central Velocity Dispersion (km/s) km/s stat.error;phys.veloc.dispersion double nullable radial_velocity Heliocentric Radial Velocity (km/s) km/s spect.dopplerVeloc;pos.heliocentric double nullable y_distance Y Distance Component kpc pos.cartesian.y;pos.galactocentric double nullable core_collapse_flag Flag [c] Indicates a Core-Collapsed Cluster meta.code char nullable class Browse Object Classification src.class short nullable log_lum_density Logarithm of Central Luminosity Density (in units of Solar luminosity per pc^3) log(Solar_Luminosity/pc^3) phys.luminosity double nullable vi_color V-I Color Index (Uncorrected for Reddening) mag phot.color;em.opt.V;em.opt.I double nullable spect_type Integrated Spectral Type src.spType char nullable vr_color V-R Color Index (Uncorrected for Reddening) mag phot.color;em.opt.V;em.opt.R double nullable central_concentration King-Model Central Concentration: log(Tidal_Radius/Core_Radius) src.morph double nullable x_distance X Distance Component kpc pos.cartesian.x;pos.galactocentric double nullable ub_color U-B Color Index (Uncorrected for Reddening) mag phot.color;em.opt.U;em.opt.B double nullable abs_vmag Absolute Visual Magnitude (Cluster Luminosity) mag phys.magAbs;em.opt.V double nullable