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HD 40837


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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.

VRI photometry of selected SAO stars
Johnson V, R, and I photoelectric photometry has been obtained for 199SAO stars in support of the Near Infrared Photographic Sky Survey. Thesedata are utilized in the calibration of survey photographs and arepresented here to assist other programs reliant upon access tophotometry in the photographic infrared.

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Observation and Astrometry data

Constellation:オリオン座
Right ascension:06h01m31.24s
Declination:+02°54'33.3"
Apparent magnitude:7.167
Distance:151.057 parsecs
Proper motion RA:-18
Proper motion Dec:-13.6
B-T magnitude:7.162
V-T magnitude:7.167

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 40837
TYCHO-2 2000TYC 134-1130-1
USNO-A2.0USNO-A2 0900-02178978
HIPHIP 28542

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