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NGC 3036


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Astrophysical parameters of Galactic open clusters
We present a catalogue of astrophysical data for 520 Galactic openclusters. These are the clusters for which at least three most probablemembers (18 on average) could be identified in the ASCC-2.5, a catalogueof stars based on the Tycho-2 observations from the Hipparcos mission.We applied homogeneous methods and algorithms to determine angular sizesof cluster cores and coronae, heliocentric distances, mean propermotions, mean radial velocities, and ages. For the first time we derivedistances for 200 clusters, radial velocities for 94 clusters, and agesof 196 clusters. This homogeneous new parameter set is compared withearlier determinations, where we find, in particular, that the angularsizes were systematically underestimated in the literature.

New catalogue of optically visible open clusters and candidates
We have compiled a new catalogue of open clusters in the Galaxy whichupdates the previous catalogues of Lyngå (\cite{Lynga1987}) and ofMermilliod (\cite{Mermilliod1995}) (included in the WEBDA database). Newobjects and new data, in particular, data on kinematics (proper motions)that were not present in the old catalogues, have been included.Virtually all the clusters (1537) presently known were included, whichrepresents an increment of about 347 objects relative to the Lyngå(\cite{Lynga1987}) catalogue. The catalogue is presented in a singletable containing all the important data, which makes it easy to use. Thecatalogue can be accessed on line either athttp://www.astro.iag.usp.br/~wilton/ or as an electronic table whichwill be made available at the CDS. Tables 1a, 1b, 2 and 3 are onlyavailable in electronic form at http://www.astro.iag.usp.br/wilton/, orat the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) orvia http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/389/871

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별자리:용골자리
적경:09h49m12.00s
적위:-62°40'00.0"
가시등급:99.9

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