Home     Per cominciare     Sopravvivere Nell'Universo    
Inhabited Sky
    News@Sky     Astro Foto     La collezione     Forum     Blog New!     FAQ     Stampa     Login  

TYC 4383-1917-1


Contenuti

Immagini

Carica la tua immagine

DSS Images   Other Images


Articoli relazionati

Absolute stellar proper motions with reference to galaxies of the M81 group
We report on the measurement of absolute proper motions of stars ofmagnitude 7 to 14.5 in a 2 deg X 2 deg field in the region of the M81group of galaxies. This work is part of the Bonn program for theextragalactic link of Hipparcos. The proper motions were determined froma collection of photographic plates covering the time interval from 1894to 1994. The absolute reference system for the proper motions isrepresented by the galaxies M81, M81, and NGC3077, for which accurateoptical reference positions were obtained by means of an imagecross-correlation technique. For the majority of stars, the internalproper motion accuracy is better than 1 mas/a. The precision of therealization of the absolute system is found to be around 1 mas/a. Intotal, our measurements yield absolute proper motions for 24 Hipparcosstars and positions, proper motions and photometry for 330 additionalstars including a number of visual binaries and high proper motionstars. Among the latter one G-type sub-dwarf is identified. The resultsare relevant as a contribution to the Hipparcos link, but also as adatabase for kinematic investigations.

Sottometti un nuovo articolo


Link relazionati

  • - Nessun link trovato -
Sottometti un nuovo link


Membro dei seguenti gruppi:


Osservazione e dati astrometrici

Costellazione:Orsa Maggiore
Ascensione retta:09h57m13.67s
Declinazione:+67°45'47.3"
Magnitudine apparente:9.038
Moto proprio RA:-9.2
Moto proprio Dec:3.2
B-T magnitude:10.88
V-T magnitude:9.191

Cataloghi e designazioni:
Nomi esatti   (Edit)
TYCHO-2 2000TYC 4383-1917-1
USNO-A2.0USNO-A2 1575-03029035
HIPHIP 48803

→ Richiesta di ulteriori cataloghi da VizieR