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HD 28995


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Absolute magnitudes for late-type dwarf stars for Sloan photometry
We present a new formula for absolute magnitude determination forlate-type dwarf stars as a function of (g-r) and (r-i) for Sloanphotometry. The absolute magnitudes estimated by this approach arebrighter than those estimated by colour-magnitude diagrams, and theyreduce the luminosity function rather close to the luminosity functionof Hipparcos.

The u'g'r'i'z' Standard-Star System
We present the 158 standard stars that define the u'g'r'i'z' photometricsystem. These stars form the basis for the photometric calibration ofthe Sloan Digital Sky Survey. The defining instrument system andfilters, the observing process, the reduction techniques, and thesoftware used to create the stellar network are all described. Webriefly discuss the history of the star selection process, thederivation of a set of transformation equations for theUBVRCIC system, and plans for future work.

Selection of standard stars for photometric observations with the 91-cm reflector at Okayama
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UBV Photometry of 500 Southern Stars [erratum: 1973MNSSA..32...48C]
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Photoelectric Three Colour Magnitudes for Southern Stars
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观测天体数据

星座:波江座
右阿森松:04h33m16.19s
赤纬:-21°08'07.1"
视星:9.826
右阿森松适当运动:-32.2
赤纬适当运动:-185.9
B-T magnitude:10.618
V-T magnitude:9.892

目录:
适当名称   (Edit)
HD 1989HD 28995
TYCHO-2 2000TYC 5897-1556-1
USNO-A2.0USNO-A2 0675-01610854
HIPHIP 21232

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