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TYC 3645-1370-1


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Absolute proper motions of open clusters. I. Observational data
Mean proper motions and parallaxes of 205 open clusters were determinedfrom their member stars found in the Hipparcos Catalogue. 360 clusterswere searched for possible members, excluding nearby clusters withdistances D < 200 pc. Members were selected using ground basedinformation (photometry, radial velocity, proper motion, distance fromthe cluster centre) and information provided by Hipparcos (propermotion, parallax). Altogether 630 certain and 100 possible members werefound. A comparison of the Hipparcos parallaxes with photometricdistances of open clusters shows good agreement. The Hipparcos dataconfirm or reject the membership of several Cepheids in the studiedclusters. Tables 1 and 2 are only available in electronic form at theCDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or viahttp://cdsweb.u-strasbg.fr/Abstract.html

The Perkins catalog of revised MK types for the cooler stars
A catalog is presented listing the spectral types of the G, K, M, and Sstars that have been classified at the Perkins Observatory in therevised MK system. Extensive comparisons have been made to ensureconsistency between the MK spectral types of stars in the Northern andSouthern Hemispheres. Different classification spectrograms have beengradually improved in spite of some inherent limitations. In thecatalog, the full subclasses used are the following: G0, G5, G8, K0, K1,K2, K3, K4, K5, M0, M1, M2, M3, M4, M5, M6, M7, and M8. Theirregularities are the price paid for keeping the general scheme of theoriginal Henry Draper classification.

Seven-colour photoelectric photometry of the open cluster NGC 7686.
Not Available

Photoelectric observations of classical cepheids.
Not Available

Spectral Classification in Some Open Clusters.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1961ApJ...134..612S&db_key=AST

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Gözlemler ve gökölçümü verileri

Takýmyýldýz:Zincirli Prenses
Sað Açýklýk:23h30m03.96s
Yükselim:+49°03'04.2"
Görünürdeki Parlaklýk:10.169
özdevim Sað Açýklýk:8.7
özdevim Yükselim:-3.8
B-T magnitude:10.668
V-T magnitude:10.211

Kataloglar ve belirtme:
Özgün isimleri   (Edit)
TYCHO-2 2000TYC 3645-1370-1
USNO-A2.0USNO-A2 1350-18350469
HIPHIP 115993

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