Principal     To Survive in the Universe    
Services
    Why to Inhabit     Top Contributors     Astrofotografía     La Colección     Foro     Blog New!     FAQ     Login  
→ Adopt this star  

HD 688


Contenidos

Imágenes

Subir su imagen

DSS Images   Other Images


Artículos relacionados

Occultations of stars by solar system objects. IX - Occultations of catalog stars by steroids, planets, and major satellites in 1992 and 1993
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1992AJ....103.2079W&db_key=AST

The Perkins catalog of revised MK types for the cooler stars
A catalog is presented listing the spectral types of the G, K, M, and Sstars that have been classified at the Perkins Observatory in therevised MK system. Extensive comparisons have been made to ensureconsistency between the MK spectral types of stars in the Northern andSouthern Hemispheres. Different classification spectrograms have beengradually improved in spite of some inherent limitations. In thecatalog, the full subclasses used are the following: G0, G5, G8, K0, K1,K2, K3, K4, K5, M0, M1, M2, M3, M4, M5, M6, M7, and M8. Theirregularities are the price paid for keeping the general scheme of theoriginal Henry Draper classification.

The absolute magnitudes of G5-M3 stars near the giant branch
The absolute magnitudes of stars on the red giant branch (G-K-M) havebeen determined using both trigonometric and statistical parallaxes,from a sample of 212 stars classified in the Revised MK System (Keenanand Pitts, 1980). The results of both methods are summarized in a table.A good agreement is found and the difference between trigonometric andstatistical parallaxes is found not to be greater than + or - 0.002. Thecomputed absolute magnitudes and space motions are tabulated.

Revised MK spectral types for G, K, and M stars
A catalog of spectral types of 552 G, K, and M stars is presented, whichis classified on the revised MK system. Stellar representatives of thehalo, disk, and arm populations in all parts of the sky are included.Photoelectric V magnitudes are given, as are intensity estimates of anyfeatures which make the spectrum appear peculiar as compared to thespectrum of a similar normal star. Abundance indices are also providedin the following lines or bands: CN, barium, Fe, calcium, and CH.

MK classifications for F-and G-type stars. 3.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1974AJ.....79..682H&db_key=AST

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:00h11m09.65s
Declinación:-03°19'17.0"
Magnitud Aparente:6.746
Distancia:257.732 parsecs
Movimiento Propio en Ascensión Recta:27.6
Movimiento Propio en Declinación:-11.5
B-T magnitude:8.05
V-T magnitude:6.854

Catálogos y designaciones:
Nombres Propios
HD 1989HD 688
TYCHO-2 2000TYC 4667-1064-1
USNO-A2.0USNO-A2 0825-00046128
HIPHIP 906

→ Solicitar más catálogos y designaciones a VizieR