Poчetna     Да почнемо     To Survive in the Universe    
Inhabited Sky
    News@Sky     Астро Фотографије     Колекција     Форум     Blog New!     FAQ(Често постављана питања     Штампа     Улогуј се  

HD 28995


Садржај

Слике

Уплоадјуј своје слике

DSS Images   Other Images


Везани чланци

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
Not Available

UBV Photometry of 500 Southern Stars [erratum: 1973MNSSA..32...48C]
Not Available

Photoelectric Three Colour Magnitudes for Southern Stars
Not Available

Додај нови чланак


Линкови у сродству са темом

  • - Нема линкова -
Додај нови линк


Чланови следећих група \:


Посматрања и Астрометриски подаци

Сазвежђа:Еридан
Ректацензија:04h33m16.19s
Deклинација:-21°08'07.1"
Apparent магнитуда:9.826
Proper motion RA:-32.2
Proper motion Dec:-185.9
B-T magnitude:10.618
V-T magnitude:9.892

Каталог и designations:
Proper имена   (Edit)
HD 1989HD 28995
TYCHO-2 2000TYC 5897-1556-1
USNO-A2.0USNO-A2 0675-01610854
HIPHIP 21232

→ Захтевај још каталога од VizieR