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HD 31585


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Photometric and spectroscopic analysis of high Galactic latitude molecular clouds. I - Distances and extinctions of stars toward 25 selected regions
The paper presents new photoelectric photometry in the UBV, uvby, andH-beta systems for 320 stars at high Galactic latitudes, selected fortheir proximity to the densest portions of a variety of high Galacticlatitude atomic and molecular clouds. Low-resolution digital spectra areemployed to classify 115 of the stars. Several novel techniques aredeveloped for automatic digital spectral classification, and fordereddening Stromgren uvby-beta and Johnson UBV,H-beta photometry. Anempirical determination of the errors in the derived dereddened colors,and techniques for converting between the two photometric systems arepresented on the basis of the analysis of a statistically significantsample of 1480 stars with complete data sets in both photometric systemsand with an accurate MK spectral type. New constraints on the distancesto several clouds are presented.

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Observation and Astrometry data

Constellation:うさぎ座
Right ascension:04h56m26.27s
Declination:-15°22'50.7"
Apparent magnitude:7.652
Distance:194.553 parsecs
Proper motion RA:2.5
Proper motion Dec:12.2
B-T magnitude:8.001
V-T magnitude:7.681

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 31585
TYCHO-2 2000TYC 5900-215-1
USNO-A2.0USNO-A2 0675-01788596
HIPHIP 22962

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