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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.
| Photometric and astrometric observations of close visual binaries
The first photoelectric sequence for the magnitude differences of 215close visual binaries in the Johnson UBV and Stromgren uvby systems havebeen established. In addition, the position angle and the separation of140 stars were measured. Finally, for 134 stars, new photoelectricmeasurements of the combined integral brightness of both components inthe UBV and Stromgren systems were made. The measurements were carriedout using the area scanning technique.
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Observation and Astrometry data
| Constellation: | Petit Renard |
| Right ascension: | 20h41m51.69s |
| Declination: | +20°42'50.5" |
| Apparent magnitude: | 7.438 |
| Distance: | 105.152 parsecs |
| Proper motion RA: | -0.1 |
| Proper motion Dec: | -56.9 |
| B-T magnitude: | 7.746 |
| V-T magnitude: | 7.464 |
Catalogs and designations:
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