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Sottometti un nuovo articolo| Photometry of stars in the uvgr system Photoelectric photometry is presented for over 400 stars using the uvgrsystem of Thuan and Gunn. Stars were selected to cover a wide range ofspectral type, luminosity class, and metallicity. A mean main sequenceis derived along with reddening curves and approximate transformationsto the UBVR system. The calibration of the standard-star sequence issignificantly improved.
 
 
 |  | Mean absolute magnitude of the blue stars at high galactic latitude. Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1962AJ.....67..740K&db_key=AST
 
 
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 Osservazione e dati astrometrici
| Costellazione: | Balena |  | Ascensione retta: | 00h39m44.01s |  | Declinazione: | -00°31'56.6" |  | Magnitudine apparente: | 10.607 |  | Moto proprio RA: | 13.6 |  | Moto proprio Dec: | -1.7 |  | B-T magnitude: | 10.884 |  | V-T magnitude: | 10.63 |  Cataloghi e designazioni:
 
 
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