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

HD 21807


Contenidos

Imágenes

Subir su imagen

DSS Images   Other Images


Artículos relacionados

Measurements of 258 radial velocities in two fields near Alpha Per
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1987A&AS...68..515F&db_key=AST

Identification of the optical counterpart of the X-ray source V0332 + 53
The optical counterpart of the X-ray transient V0332 + 53 is a star ofmagnitudes V = 15.13 and B - V = 2.31. The line H-alpha has a P-Cygniprofile with the absorption component at -1400 km/s. The possibility ofa 2.198 s optical periodicity, at 3.4 sigma level, is investigated.

A spectrophotometric survey of stars along the Milky Way. IV
In the present paper a catalogue of spectrophotometric quantities,spectral types, monochromatic magnitudes and colour equivalents is givenfor all stars brighter than the magnitude m4400 = 10.5 in aregion of the Milky Way in Perseus. No absorption is found for starscloser than about r = 100 pc. The absorbing clouds are situated atdistances closer than 1 kpc and at about 2.5 kpc in the local arm andthe Perseus arm, respectively. The space between the two arms is freefrom absorption. It is also concluded that the Perseus arm continuesbeyond l = 140 deg, containing not only hydrogen gas but also dust to atleast l = 150 deg), while the content of OB stars decreases abruptly atl = 140 deg.

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:Jirafa
Ascensión Recta:03h33m22.69s
Declinación:+52°57'09.4"
Magnitud Aparente:8.936
Distancia:211.416 parsecs
Movimiento Propio en Ascensión Recta:-5.9
Movimiento Propio en Declinación:-11.3
B-T magnitude:9.275
V-T magnitude:8.964

Catálogos y designaciones:
Nombres Propios   (Edit)
HD 1989HD 21807
TYCHO-2 2000TYC 3716-319-1
USNO-A2.0USNO-A2 1425-04389260
HIPHIP 16575

→ Solicitar más catálogos y designaciones a VizieR