| Contenidos
 
 ImágenesSubir su imagen
 DSS Images   Other Images
 
 
 
 Artículos relacionados
Enviar un nuevo artículo| The Henry Draper Extension Charts: A catalogue of accurate positions, proper motions, magnitudes and spectral types of 86933 stars The Henry Draper Extension Charts (HDEC), published in the form offinding charts, provide spectral classification for some 87000 starsmostly between 10th and 11th magnitude. This data, being highlyvaluable, as yet was practically unusable for modern computer-basedastronomy. An earlier pilot project (Roeser et al. 1991) demonstrated apossibility to convert this into a star catalogue, using measurements ofcartesian coordinates of stars on the charts and positions of theAstrographic Catalogue (AC) for subsequent identification. We presenthere a final HDEC catalogue comprising accurate positions, propermotions, magnitudes and spectral classes for 86933 stars of the HenryDraper Extension Charts.
 
 
 |  | Catalog of BV magnitudes and spectral classes of 6000 stars The present catalog, compiled at the Abastumani Observatory, contains BVmagnitudes and spectral classes of about 6000 stars up to V(lim) = 13.0min five circular areas of 18 sq deg located near the salactic-equatorplane. The catalog is intended for star-statistics studies ofstar-formation regions.
 
 
 |  | Peculiar stars in the association Per OB2. Not Available
 
 
 |  | Spectroscopic studies of stars in Per OB2. Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1977AJ.....82..598G&db_key=AST
 
 
 |  | A Study of the II Persei Association. Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1960ApJ...132...58S&db_key=AST
 
 
 |  
 
 
 Enlaces relacionados
En viar un nuevo enlace- No se han encontrado enlaces - 
 
 
 Miembro de los siguientes grupos: | 
 
 Datos observacionales y astrométricos
| Constelación: | Perseo |  | Ascensión Recta: | 04h03m02.29s |  | Declinación: | +34°37'31.9" |  | Magnitud Aparente: | 10.053 |  | Movimiento Propio en Ascensión Recta: | 8.5 |  | Movimiento Propio en Declinación: | -0.9 |  | B-T magnitude: | 10.329 |  | V-T magnitude: | 10.076 |  Catálogos y designaciones:
 
 
 |