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HD 202312


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Pulkovo compilation of radial velocities for 35495 stars in a common system.
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E. W. Fick Observatory stellar radial velocity measurements. I - 1976-1984
Stellar radial velocity observations made with the large vacuumhigh-dispersion photoelectric radial velocity spectrometer at FickObservatory are reported. This includes nearly 2000 late-type starsobserved during 585 nights. Gradual modifications to this instrumentover its first eight years of operation have reduced the observationalerror for high-quality dip observations to + or - 0.8 km/s.

New UBVRI photometry for 900 supergiants
A description is presented of the results obtained in connection with asystematic program of supergiant photometry on the Johnson UBVRI system.During the eight years after the start of the program, almost 1000 starshave been observed, about 400 three or more times each. The originalselection of stars used the spectral type catalog of Jaschek et al.(1964) to choose supergiants. Since observations were possible from bothChile and Canada, no declination limits were imposed, and no particularselection criteria were imposed other than to eliminate carbon stars.These are so red as to require enormous extrapolations of thetransformation equations.

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Membro dei seguenti gruppi:

Osservazione e dati astrometrici

Costellazione:Cigno
Ascensione retta:21h13m36.10s
Declinazione:+45°10'07.5"
Magnitudine apparente:7.333
Distanza:373.134 parsec
Moto proprio RA:0.7
Moto proprio Dec:-5.2
B-T magnitude:8.42
V-T magnitude:7.423

Cataloghi e designazioni:
Nomi esatti
HD 1989HD 202312
TYCHO-2 2000TYC 3589-6583-1
USNO-A2.0USNO-A2 1350-13678835
HIPHIP 104781
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