בית     To Survive in the Universe    
Services
    Why to Inhabit     Top Contributors     תמונת אסטרו     האוסף     קבוצת דיון     Blog New!     שאלות נפוצות     כניסה  
→ Adopt this star  

HD 8431


תוכן

תמונות

הוסף תמונה שלך

DSS Images   Other Images


מאמרים קשורים

The Tokyo PMC catalog 90-93: Catalog of positions of 6649 stars observed in 1990 through 1993 with Tokyo photoelectric meridian circle
The sixth annual catalog of the Tokyo Photoelectric Meridian Circle(PMC) is presented for 6649 stars which were observed at least two timesin January 1990 through March 1993. The mean positions of the starsobserved are given in the catalog at the corresponding mean epochs ofobservations of individual stars. The coordinates of the catalog arebased on the FK5 system, and referred to the equinox and equator ofJ2000.0. The mean local deviations of the observed positions from theFK5 catalog positions are constructed for the basic FK5 stars to comparewith those of the Tokyo PMC Catalog 89 and preliminary Hipparcos resultsof H30.

Intermediate band photometry of late-type stars. II - Some stellar groups
Observations on the (R, I) system and a modified Stromgren system ofmembers of six stellar groups are used to demonstrate the chemicalhomogeneity of some 70% or 80% of the members assigned to the groups onthe basis of kinematics. The groups discussed are the Hyades, Wolf 630,Arcturus, Groombridge 1830, and Kapteyn's Star Groups as well as ananonymous group of a half dozen subdwarfs with (U, V) near (-150, -320)km/s. Standards for a previously described photometric system areextended, and additional F- and G-type standards for the (R, I) systemare presented. A simple relation is derived for computing the Fe/Habundance ratio for most stars in the corrected (R-I) interval from +0.2to +0.45 magnitude.

הכנס מאמר חדש


לינקים קשורים

  • - לא נמצאו לינקים -
הכנס לינק חדש


משמש של הקבוצה הבאה


תצפית ומידע אסטרומטרי

קבוצת-כוכבים:דגים
התרוממות ימנית:01h23m40.19s
סירוב:+08°11'21.5"
גודל גלוי:8.326
מרחק:154.56 פארסק
תנועה נכונה:-10.4
תנועה נכונה:-8.7
B-T magnitude:8.685
V-T magnitude:8.356

קטלוגים וכינוים:
שם עצם פרטי
HD 1989HD 8431
TYCHO-2 2000TYC 614-1016-1
USNO-A2.0USNO-A2 0975-00315112
HIPHIP 6513

→ הזמן עוד קטלוגים וכינוים מוזיר