Mirach - β Andromedae (beta Andromedae)
Mirach, also designated as β Andromedae (beta Andromedae), is a variable and multiple hypergiant star in the constellation of Andromeda.
Mirach visual magnitude is 2.06, making it the 56th brightest star in the sky. Thanks to its high brightness, Mirach is clearly visible when observed from locations with dark skyes, and should be also quite easily visible from light polluted areas.
The table below summarizes the key facts about Mirach:
Celestial coordinates and finder chart of Mirach
Mirach is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of Mirach are provided in the following table:
The simplified sky map below shows the position of Mirach in the sky:
Visibility of Mirach from your location
Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Today's Mirach - β Andromedae (beta Andromedae) rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):
Digitized Sky Survey image of Mirach
The image below is a photograph of Mirach 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 Mirach is 0.178 arcsec per year in Right Ascension and -0.114 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.
Distance of Mirach from the Sun and relative movement
Mirach is distant 199.27 light years from the Sun and it is moving far from the Sun at the speed of 3 kilometers per second.
Spectral properties of Mirach
Mirach belongs to spectral class M0 and has a luminosity class of III corresponding to a hypergiant star.
The red dot in the diagram below shows where Mirach is situated in the Hertzsprung–Russell diagram.
Mirach star system properties
Mirach is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the Mirach double sysyem: