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HD 4720


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Photometry of stars in the uvgr system
Photoelectric photometry is presented for over 400 stars using the uvgrsystem of Thuan and Gunn. Stars were selected to cover a wide range ofspectral type, luminosity class, and metallicity. A mean main sequenceis derived along with reddening curves and approximate transformationsto the UBVR system. The calibration of the standard-star sequence issignificantly improved.

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观测天体数据

星座:鯨魚座
右阿森松:00h49m17.84s
赤纬:-01°37'33.4"
视星:8.752
距离:198.807 天文距离
右阿森松适当运动:22.9
赤纬适当运动:23.9
B-T magnitude:9.156
V-T magnitude:8.786

目录:
适当名称
HD 1989HD 4720
TYCHO-2 2000TYC 4673-1066-1
USNO-A2.0USNO-A2 0825-00185369
HIPHIP 3842
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