Home     Sopravvivere Nell'Universo    
Services
    Perché adottare     Donatori     Astro Foto     La collezione     Forum     Blog New!     FAQ     Login  
→ Adopt this star  

HD 76525


Contenuti

Immagini

Carica la tua immagine

DSS Images   Other Images


Articoli relazionati

New periodic variables from the Hipparcos epoch photometry
Two selection statistics are used to extract new candidate periodicvariables from the epoch photometry of the Hipparcos catalogue. Theprimary selection criterion is a signal-to-noise ratio. The dependenceof this statistic on the number of observations is calibrated usingabout 30000 randomly permuted Hipparcos data sets. A significance levelof 0.1 per cent is used to extract a first batch of candidate variables.The second criterion requires that the optimal frequency be unaffectedif the data are de-trended by low-order polynomials. We find 2675 newcandidate periodic variables, of which the majority (2082) are from theHipparcos`unsolved' variables. Potential problems with theinterpretation of the data (e.g. aliasing) are discussed.

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.

Lichtelektrische UBV-Photometrie von Standardsternen und in vier Sternfeldern am Äquator
Not Available

Sottometti un nuovo articolo


Link relazionati

  • - Nessun link trovato -
Sottometti un nuovo link


Membro dei seguenti gruppi:


Osservazione e dati astrometrici

Costellazione:Idra
Ascensione retta:08h56m45.50s
Declinazione:+00°23'24.5"
Magnitudine apparente:8.075
Distanza:446.429 parsec
Moto proprio RA:-11.7
Moto proprio Dec:6.3
B-T magnitude:9.919
V-T magnitude:8.228

Cataloghi e designazioni:
Nomi esatti
HD 1989HD 76525
TYCHO-2 2000TYC 213-871-1
USNO-A2.0USNO-A2 0900-06220051
HIPHIP 43913

→ Richiesta di ulteriori cataloghi da VizieR