Alpherg - η Piscium (eta Piscium)
Alpherg, also designated as η Piscium (eta Piscium), is a variable and double giant star in the constellation of Pisces.
Alpherg visual magnitude is 3.62. Because of its moderate brightness, Alpherg should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.
The table below summarizes the key facts about Alpherg:
Celestial coordinates and finder chart of Alpherg
Alpherg is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of Alpherg are provided in the following table:
The simplified sky map below shows the position of Alpherg in the sky:
Visibility of Alpherg from your location
Digitized Sky Survey image of Alpherg
The image below is a photograph of Alpherg from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of Alpherg is 0.028 arcsec per year in Right Ascension and -0.006 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.
Distance of Alpherg from the Sun and relative movement
Alpherg is distant 293.96 light years from the Sun and it is moving far from the Sun at the speed of 15 kilometers per second.
Spectral properties of Alpherg
Alpherg belongs to spectral class G7 and has a luminosity class of III corresponding to a giant star.
The red dot in the diagram below shows where Alpherg is situated in the Hertzsprung–Russell diagram.
Alpherg star system properties
Alpherg is a visual double star which can be observed with the help of large telescopes. The table below shows key information about the Alpherg double sysyem: