Home     To Survive in the Universe    
Services
    Why to Inhabit     Top Contributors     Astro Photo     The Collection     Forum     Blog New!     FAQ     Login  
→ Adopt this star  

TYC 6994-28-1


Contents

Images

Upload your image

DSS Images   Other Images


Related articles

CCD photometry and astrometry for visual double and multiple stars of the HIPPARCOS catalogue III. CCD photometry and differential astrometry for 253 southern ``intermediate'' systems
We present new astrometric and photometric data for 253 visual doublestars of the ``intermediate'' class, i.e. with angular separations inthe range 1 to 15 arcsec. The multi-colour observations were obtained in1992-94 as part of the ESO Key Programme ``Visual Double Stars''performed at La Silla Observatory (Chile). Differential magnitudes andcolours have been secured in a systematic way while component magnitudesand colour indices have been determined in the V and I passbands of theCousins standard system in good photometric conditions only. Internaland mean external errors are smaller than respectively 0.01 mag and afew hundreths of a magnitude (typically less than 0.03 mag). Relativepositions are obtained as a by-product with internal errors of the orderof 0.006 arcsec in angular separation (corresponding to pixel width x0.02) and 0.07 degr in position angle. Final accuracies are thoroughlydiscussed: we illustrate the overall excellent quality of the data andestimate the quality degradation for angular separations barely largerthan the width of the seeing disk. Based on observations made at LaSilla (ESO, Chile, Key Programme 7-009-49K).

Submit a new article


Related links

  • - No Links Found -
Submit a new link


Member of following groups:


Observation and Astrometry data

Constellation:ちょうこくしつ座
Right ascension:00h31m03.13s
Declination:-32°37'55.0"
Apparent magnitude:10.317
Proper motion RA:34.7
Proper motion Dec:-47.7
B-T magnitude:10.864
V-T magnitude:10.363

Catalogs and designations:
Proper Names
TYCHO-2 2000TYC 6994-28-1
USNO-A2.0USNO-A2 0525-00200728
HIPHIP 2438

→ Request more catalogs and designations from VizieR