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CCD measurements of visual double stars made with the 74 cm and 50 cm refractors of the Nice Observatory (2nd series) We present 619 measurements of 606 visual double stars made by CCDimaging from 1996 to 1999 with the 74 cm and 50 cm refractors of theNice observatory. Angular separation, position angle and magnitudedifference are given. Magnitude differences estimated from CCD imagesare compared with magnitude differences given in the Hipparcos catalog.The residuals in angular separation and position angle are computed forbinaries with known orbit. Table 2 is only available in electronic format 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/378/954
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| Visual multiples. VIII - 1000 MK types A total of 1000 new classifications are given for stars brighter than B= 8.0 mag in the Aitken double star catalog. The classificationssupplement 865 classifications obtained in 1981 and 1984. Among thenewly discovered stars are 12 new Ap stars, eight Lambda Bootis stars,one Ba II star, and 60 Am stars. A detailed list of the newclassifications is given.
| Mikrometermessungen von Doppelsternen. V Not Available
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Osservazione e dati astrometrici
Costellazione: | Cigno |
Ascensione retta: | 19h28m37.71s |
Declinazione: | +37°11'18.8" |
Magnitudine apparente: | 8.274 |
Distanza: | 250 parsec |
Moto proprio RA: | 9 |
Moto proprio Dec: | -20.6 |
B-T magnitude: | 8.547 |
V-T magnitude: | 8.297 |
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