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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
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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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Osservazione e dati astrometrici

Costellazione:Eridano
Ascensione retta:04h33m16.19s
Declinazione:-21°08'07.1"
Magnitudine apparente:9.826
Moto proprio RA:-32.2
Moto proprio Dec:-185.9
B-T magnitude:10.618
V-T magnitude:9.892

Cataloghi e designazioni:
Nomi esatti
HD 1989HD 28995
TYCHO-2 2000TYC 5897-1556-1
USNO-A2.0USNO-A2 0675-01610854
HIPHIP 21232
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