OpenCluster ivo://nasa.heasarc/openclust NASA/GSFC HEASARC Dias, Alessi, Moitinho, Lepine 2026-10-09 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Star Cluster This is a new catalog of open clusters in the Galaxy which updates the previous catalogs of Lynga (1987, <a href="https://cdsarc.cds.unistra.fr/ftp/cats/VII/92A">CDS Cat. VII/92A</a>, the HEASARC table now called <a href="lyngaclust.html">LYNGACLUST</a>) and of Mermilliod (1995, in Information and On-Line Data in Astronomy, ed. D. Egret & M. A. Albrecht (Dordrecht: Kluwer), 127). New objects and new data, in particular, data on kinematics (proper motions) that were not present in the old catalogs, have been included. Virtually all of the clusters presently known are included, which represents a large increase in the number of objects (almost 1,000) relative to the Lynga Catalog. In total, 99.7% of the objects have estimates of their apparent diameters, and 74.5% have distance, E(B-V) and age determinations. Concerning the data on kinematics, 54.7% have their mean proper motions listed, 25% their mean radial velocities, and 24.2% have both information simultaneously. Acknowledgments: Extensive use has been made by the authors of the SIMBAD and WEBDA databases. This project is supported by FAPESP (grant number 03/12813-4) and CAPES (CAPES-GRICES grant number 040/2008). This database table was originally created by the HEASARC in September 2002 based on the CDS version of the catalog. In March 2006, the HEASARC updated the table to use instead the following file obtained from the authors' web site at the time (www.astro.iag.usp.br/ocdb/file/clusters.txt). In August 2017, the HEASARC reverted to using the CDS version of this catalog, available as the file clusters.dat at <a href="https://cdsarc.cds.unistra.fr/ftp/cats/B/ocl/">https://cdsarc.cds.unistra.fr/ftp/cats/B/ocl/</a>. This is a service provided by NASA HEASARC . 2002A&A...389..871D https://heasarc.gsfc.nasa.gov/W3Browse/all/openclust.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=openclust& GET text/xml 180 99999 true 223.8 -83.42333333 0.5 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=openclust GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_openclust&Action=More+Options&Action=Parameter+Search&ConeAdd=1 STAR CATALOG 0.5 Optical public openclust New Optically Visible Open Clusters and Candidates Catalog name Cluster 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 apparent_diameter Angular Apparent Diameter (arcmin) arcmin phys.angSize double nullable "distance" Heliocentric Distance According to WEBDA Database (pc) pc pos.distance;pos.heliocentric int nullable log_age Logarithm of the Age (in years) of the Cluster log(yr) time.age double nullable metallicity Cluster Metallicity [Fe/H] (Solar units) Solar phys.abund.Fe double nullable metallicity_error Error in Cluster Metallicity Solar stat.error;phys.abund.Fe double nullable trumpler_type Trumpler Type Determined in the DSS Inspection src.class char nullable pm_ra_error Standard Deviation in the Right Ascension Proper Motion (mas/yr) mas/yr stat.error;pos.pm;pos.eq.ra double nullable pm_ra Mean Proper Motion of the Cluster in Right Ascension (mas/yr) mas/yr pos.pm;pos.eq.ra double nullable type_flag Cluster Classification Flag meta.code.qual char nullable ref_rad_vel Source of the Mean Radial Velocity Determination (See References) meta.bib;phys.veloc;pos.heliocentric char nullable lii Galactic Longitude degree pos.galactic.lon double nullable pm_dec Mean Proper Motion of the Cluster in Declination (mas/yr) mas/yr pos.pm;pos.eq.dec double nullable e_bv Color Excess or Reddening of the Cluster (mag) mag phot.color.excess;em.opt.B;em.opt.V double nullable bii Galactic Latitude degree pos.galactic.lat double nullable pm_dec_error Standard Deviation in the Declination Proper Motion (mas/yr) mas/yr stat.error;pos.pm;pos.eq.dec double nullable rad_vel_error Error in Radial Velocity (km/s) km/s stat.error;phys.veloc;pos.heliocentric double nullable num_metallicity_stars Number of Stars Used to Determine Metallicity meta.number;phys.abund.Fe short nullable num_cluster_stars Estimated Number of Cluster Members meta.number short nullable num_rad_vel_stars Number of Stars Used to Determine RV meta.number;phys.veloc short nullable rad_vel Radial Velocity (km/s) km/s phys.veloc;pos.heliocentric double nullable ref_pm Source of the Mean Proper Motion Determination (See References) meta.bib;pos.pm char 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