Inici     Començant     Sobreviure a l'Univers    
Inhabited Sky
    News@Sky     Astro Fotografia     La Col·lecció     Fòrum     Blog New!     FAQ     Premsa     Login  

HD 104147


Contingut

Imatges

Carregar la teva Imatge

DSS Images   Other Images


Articles Relacionats

A preliminary compilation of DS-programme star positions
A catalog is presented of the double-star-program (DS-program) starpositions, listing right ascensions for 930 DSs and declinations for1225 DSs of the program. The positions were compiled from the observedvalues obtained between 1980 and 1987 with the meridian circles of sixUSSR observatories (the Moscow, Kazan', Kiev, Khar'kov, Odessa, andTashkent Observatories) and the Belgrade Observatory. The measurementsand the treatment of the observational material were performed using therelative method, and the FK-4 system stars were used as reference stars.

Visual multiples. VII - MK classifications
Classifications are given for 865 components of visual multiples; theyshow no systematic differences from the MK system, and the random errorsare one subclass in type and two-thirds of a luminosity class. It isfound that at least 1% of the F-type IV and V stars are weak-lined, 32%of the A4-F1 IV and V stars are Am, and 5% of the A0-A3 IV and V starsare early-type Am. Attention is called to the large fraction (55%) ofthe A3-A9 III-V stars that are of luminosity classes III or IV, unlikethe percentage (16%) at neighboring types.

Enviar un nou article


Enllaços Relacionats

  • - No s'ha trobat enllaços -
Enviar un nou enllaç


Membre dels grups següents:


Dades d'Observació i Astrometria

Constel·lació:Ursa Minor
Ascensió Recta:12h00m10.43s
Declinació:+86°59'40.0"
Magnitud Aparent:8.092
Distancia:263.852 parsecs
Moviment propi RA:-36.5
Moviment propi Dec:-5.2
B-T magnitude:8.237
V-T magnitude:8.104

Catàlegs i designacions:
Noms Propis   (Edit)
HD 1989HD 104147
TYCHO-2 2000TYC 4641-697-1
USNO-A2.0USNO-A2 1725-00423684
HIPHIP 58531

→ Sol·licitar més catàlegs i designacions de VizieR