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HD 31808


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Near-infrared photometry of stars
Results are presented of infrared photometric observations performed oncomparison stars during a monitoring of long-period variables. Theseobservations, spread over a lapse of about 5 years, are used to derivethe J, H, and K magnitudes of 54 stars in the photometric systemdescribed by Koornneef (1983). The 1950.0 coordinates, spectral types,visual magnitudes, average magnitudes, and the number of observationsare given for each object.

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观测天体数据

星座:波江座
右阿森松:04h58m11.48s
赤纬:-14°14'11.7"
视星:8.597
距离:529.101 天文距离
右阿森松适当运动:-1.5
赤纬适当运动:-11.6
B-T magnitude:10.315
V-T magnitude:8.739

目录:
适当名称   (Edit)
HD 1989HD 31808
TYCHO-2 2000TYC 5329-1840-1
USNO-A2.0USNO-A2 0750-01168743
HIPHIP 23095

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