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Spectral types for early-type stars observed by SKYLAB
MK spectral types are presented for 246 early-type stars observed withthe S-019 ultraviolet stellar astronomy experiment on Skylab. K-linetypes are also given where applicable, and various peculiar stars areidentified. The peculiar stars include five silicon stars, a shell star,a helium-rich star, a silicon-strontium star, a chromium-europium star,and two marginal metallic-line stars.
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Observation and Astrometry data
| Constellation: | Cygnus |
| Right ascension: | 21h42m21.09s |
| Declination: | +50°51'28.9" |
| Apparent magnitude: | 7.227 |
| Distance: | 420.168 parsecs |
| Proper motion RA: | 1.8 |
| Proper motion Dec: | -0.9 |
| B-T magnitude: | 7.165 |
| V-T magnitude: | 7.222 |
Catalogs and designations:
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