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 133031


תוכן

תמונות

הוסף תמונה שלך

DSS Images   Other Images


מאמרים קשורים

CCD astrometry and instrumental Delta-V photometry of wide visual double stars. III - Differential measurements of often observed southern pairs
We present accurate relative positions and instrumental visual (BesselV) magnitude differences of southern wide star components. The meanaccuracy of the angular separation is 0.02 arcsecs, which corresponds to1.5 micron on the CCD chip, and of magnitude difference 0.007mag/exposure. The program pairs are targets of the HIPPARCOS mission andthey have been observed at least four times in the last 150 yrs.

A photometric study of wide visual double stars with significant relative proper motion
Photometric observations and uvby H-beta indices of 142 wide visualdouble stars are presented. Calibrations of the indices are used toderive MK class, color excess, absolute magnitude, effectivetemperature, and distance. The results are used to check candidatesdouble stars for the Hipparcos mission for opticity.

Space motions of low-mass stars.
Radial-velocity measures are presented for 225 stars, most of which aredwarf K and M stars. The data were obtained with the CfA digitalspeedometer, whose uncertainty is less than 1 km/s. Calibrations ofthree earlier radial-velocity studies and comparisons with three othercontemporary ones lead to the evaluation of the standard error for anindividual star as determined in each investigation. The data from twomasks, matching solar type and M type stars, form a ratio that measuresstellar surface temperature quite closely and appear to be useful indetecting the presence of unseen companions. A few previouslyunrecognized binaries have been detected; those with most certaintyinclude stars nos. 366B, 453, and 46A of the McCormick lists of dwarfstars.

Parallaxes and proper motions.
Abstract image available at:http://adsabs.harvard.edu/abs/1972AJ.....77..875T

הכנס מאמר חדש


לינקים קשורים

  • - לא נמצאו לינקים -
הכנס לינק חדש


משמש של הקבוצה הבאה


תצפית ומידע אסטרומטרי

קבוצת-כוכבים:שומר הדובים
התרוממות ימנית:15h01m52.27s
סירוב:+15°47'18.2"
גודל גלוי:8.896
מרחק:398.406 פארסק
תנועה נכונה:11.1
תנועה נכונה:-36
B-T magnitude:10.03
V-T magnitude:8.99

קטלוגים וכינוים:
שם עצם פרטי
HD 1989HD 133031
TYCHO-2 2000TYC 1485-383-1
USNO-A2.0USNO-A2 1050-07371230
HIPHIP 73543

→ הזמן עוד קטלוגים וכינוים מוזיר