Principal     Comenzar     To Survive in the Universe    
Inhabited Sky
    News@Sky     Astrofotografía     La Colección     Foro     Blog New!     FAQ     Prensa     Login  

HD 9957


Contenidos

Imágenes

Subir su imagen

DSS Images   Other Images


Artículos relacionados

The Calar Alto lunar occultation program: update and new results
We present an update of the lunar occultation program which is routinelycarried out in the near-IR at the Calar Alto Observatory. A total of 350events were recorded since our last report (Fors et al. 2004, A&A,419, 285). In the course of eight runs we have observed, among others,late-type giants, T-Tauri stars, and infrared sources. Noteworthy was apassage of the Moon close to the galactic center, which produced a largenumber of events during just a few hours in July 2004. Results includethe determinations of the angular diameter of RZ Ari,and the projected separations and brightness ratios for one triple and13 binary stars, almost all of which representing first time detections.Projected separations range from 0farcs09 to 0farcs007. We provide aquantitative analysis of the performance achieved in our observations interms of angular resolution and sensitivity, which reach about 0farcs003and K ≈8.5 mag, respectively. We also present a statisticaldiscussion of our sample, and in particular of the frequency ofdetection of binaries among field stars.

Enviar un nuevo artículo


Enlaces relacionados

  • - No se han encontrado enlaces -
En viar un nuevo enlace


Miembro de los siguientes grupos:


Datos observacionales y astrométricos

Constelación:Piscis, Peces
Ascensión Recta:01h37m24.52s
Declinación:+09°35'38.6"
Magnitud Aparente:8.461
Distancia:418.41 parsecs
Movimiento Propio en Ascensión Recta:1
Movimiento Propio en Declinación:-10.7
B-T magnitude:10.132
V-T magnitude:8.599

Catálogos y designaciones:
Nombres Propios   (Edit)
HD 1989HD 9957
TYCHO-2 2000TYC 621-207-1
USNO-A2.0USNO-A2 0975-00367251
HIPHIP 7561

→ Solicitar más catálogos y designaciones a VizieR