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A second list of wide visual binaries
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| A second list of wide visual binaries
Not Available
| Visual multiples. VII - MK classifications
Classifications are given for 865 components of visual multiples; theyshow no systematic differences from the MK system, and the random errorsare one subclass in type and two-thirds of a luminosity class. It isfound that at least 1% of the F-type IV and V stars are weak-lined, 32%of the A4-F1 IV and V stars are Am, and 5% of the A0-A3 IV and V starsare early-type Am. Attention is called to the large fraction (55%) ofthe A3-A9 III-V stars that are of luminosity classes III or IV, unlikethe percentage (16%) at neighboring types.
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Посматрања и Астрометриски подаци
| Сазвежђа: | Гавран |
| Ректацензија: | 12h43m47.69s |
| Deклинација: | -12°00'51.2" |
| Apparent магнитуда: | 6.624 |
| Даљина: | 166.389 parsecs |
| Proper motion RA: | 42.3 |
| Proper motion Dec: | -21.1 |
| B-T magnitude: | 8.359 |
| V-T magnitude: | 6.768 |
Каталог и designations:
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