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HD 210728


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UBV photometry of faint southern blue stars
UBV photometry of 79 faint southern blue stars is reported. Theseobjects were taken primarily from the lists of Jaidee and Lynga and ofChavira. From their positions in the two-color diagrams, a table ofprobable white dwarfs is derived. The colors of additional peculiarsources, including the X-ray quasar 2A2251 - 179, two Fairall galaxies,and the Glass-Zuiderwijk optical identification of the X-ray source2S1702 - 363 and white dwarfs are also given.

Photometry of faint blue stars - III. Hbeta photometry of some southern stars.
Abstract image available at:http://adsabs.harvard.edu/abs/1977MNRAS.178..369K

Photometry of faint blue stars. II - A second list of southern stars
Photometry in the uvby system is given for 61 faint blue stars. Thestars are classified by means of the Stroemgren indices, usingpreviously described criteria.

A search for flare stars in the Orion Nebula region
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Observation and Astrometry data

Constellation:Octant
Right ascension:22h18m47.05s
Declination:-80°58'46.7"
Apparent magnitude:9.596
Proper motion RA:10.7
Proper motion Dec:-4
B-T magnitude:10.18
V-T magnitude:9.645

Catalogs and designations:
Proper Names
HD 1989HD 210728
TYCHO-2 2000TYC 9487-432-1
USNO-A2.0USNO-A2 0075-06930912
HIPHIP 110158
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