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

HD 187979


Contents

Images

Upload your image

DSS Images   Other Images


Related articles

CCD astrometry and components instrumental magnitude difference of 432 Hipparcos wide visual double stars
Context: We measured the angular separations, position angles, ΔV, Δ y and Δ I of wide visual double stars during the period2003-2005. At least one component of the double stars in our sample hasan entry in the Hipparcos catalogue. Aims: Our measurements are acontribution to the study of the nature of these double stars. Methods: The northern double stars of the project were observed with the1.2 m telescope of the Kryonerion observatory and the southern with the1.0 m SAAO. We performed multiple-exposure CCD imaging of our targetsand used the standard procedure of data reduction and astrometric CCDcalibrations. Results: We present measurements of 213 northern and 219southern wide binaries.Based on observations made at Kryonerion Observatory of the NationalObservatory of Athens, Greece, and the South African AstronomicalObservatory. Full Table 1 and Tables 2, 3 are only available inelectronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr(130.79.128.5) or viahttp://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/472/1055

Mesures d'etoiles doubles faites a Nice (5eme serie. Double star measurements made at Nice
We present the last observations from two lists: General program and MLRpairs, made with the 50~cm refractor of Nice Observatory.

A second list of wide visual binaries
Not Available

A second list of wide visual binaries
Not Available

Mesures d'étoiles doubles faites aux Observatoires Yerkes et McDonald
Not Available

Submit a new article


Related links

  • - No Links Found -
Submit a new link


Member of following groups:

Observation and Astrometry data

Constellation:Cygnus
Right ascension:19h50m07.53s
Declination:+54°39'06.5"
Apparent magnitude:7.994
Distance:325.733 parsecs
Proper motion RA:1
Proper motion Dec:1.8
B-T magnitude:10.151
V-T magnitude:8.173

Catalogs and designations:
Proper Names
HD 1989HD 187979
TYCHO-2 2000TYC 3939-1659-1
USNO-A2.0USNO-A2 1425-10019275
HIPHIP 97587
→ Request more catalogs and designations from VizieR