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TYC 4763-627-1


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Far-ultraviolet stellar photometry: A field in Orion
Far-ultraviolet photometry for 625 objects in Orion is presented. Thesedata were extracted from electrographic camera images obtained duringsounding rocket flights in 1975 and 1982. The 1975 images were centeredclose to the belt of Orion while the 1982 images were centeredapproximately 9 deg further north. One hundred and fifty stars fell inthe overlapping region and were observed with both cameras. Sixty-eightpercent of the objects were tentatively identified with known starsusing the SIMBAD database while another 24% are blends of objects tooclose together to separate with our resolution. As in previous studies,the majority of the identified ultraviolet sources are early-type stars.However, there are a significant number for which no such identificationwas possible, and we suggest that these are interesting objects whichshould be further investigated. Seven stars were found which were brightin the ultraviolet but faint in the visible. We suggest that some ofthese are nearby white dwarfs.

UV survey of certain fields of the sky with the Glazar space telescope
The Glazar telescope, installed on the Kvant module of the Mir spacestation, started regular observations in August 1987. This paperpresents results of the photometry of 15 stars detected by the Glazartelescope at 1640 A in an area of about 28 sq deg at high Galacticlongitudes.

Walraven photometry of nearby southern OB associations
Homogeneous Walraven (VBLUW) photometry is presented for 5260 stars inthe regions of five nearby southern OB associations: Scorpio Centaurus(Sco OB2), Orion OB1, Canis Major OB1, Monoceros OB1, and Scutum OB2.Derived V and (B - V) in the Johnson system are included.

UVBY observations of A, F, G and K field stars
Photoelectric data in the uvby system have been obtained for about 800southern stars of the Hipparcos Input Catalog (Grenon, 1982, 1985). Mostof the stars are F and G main sequence and fall in the magnitude range V= 8-11.

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Наблюдательные данные и астрометрия

Созвездие:Орион
Прямое восхождение:05h14m29.25s
Склонение:-07°16'58.2"
Видимая звёздная величина:8.529
Расстояние:195.312 парсек
Собственное движение RA:-0.4
Собственное движение Dec:0.5
B-T magnitude:8.512
V-T magnitude:8.528

Каталоги и обозначения:
Собственные имена   (Edit)
TYCHO-2 2000TYC 4763-627-1
USNO-A2.0USNO-A2 0825-01387939
HIPHIP 24428

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