Aludra - η Canis Majoris (eta Canis Majoris)
Aludra, also designated as η Canis Majoris (eta Canis Majoris), is a double supergiant star in the constellation of Canis Major.
Aludra visual magnitude is 2.45, making it the 88th brightest star in the sky. Thanks to its high brightness, Aludra 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 Aludra:
Celestial coordinates and finder chart of Aludra
Aludra is situated south of the celestial equator, as such, it is more easily visible from the southern emisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of Aludra are provided in the following table:
The simplified sky map below shows the position of Aludra in the sky:
Visibility of Aludra from your location
Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Today's Aludra - η Canis Majoris (eta Canis Majoris) 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 Aludra
The image below is a photograph of Aludra 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 Aludra is -0.004 arcsec per year in Right Ascension and 0.005 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.
Distance of Aludra from the Sun and relative movement
Aludra is distant 3,196.08 light years from the Sun and it is moving far from the Sun at the speed of 41 kilometers per second.
Spectral properties of Aludra
Aludra belongs to spectral class B5 and has a luminosity class of I corresponding to a supergiant star.
The red dot in the diagram below shows where Aludra is situated in the Hertzsprung–Russell diagram.
Aludra star system properties
Aludra is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the Aludra double sysyem: