τ Librae (tau Librae)
τ Librae is a main-sequence star in the constellation of Libra.
τ Librae visual magnitude is 3.66. Because of its moderate brightness, τ Librae 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 τ Librae:
Celestial coordinates and finder chart of τ Librae
τ Librae 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 τ Librae are provided in the following table:
The simplified sky map below shows the position of τ Librae in the sky:
Visibility of τ Librae from your location
Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Today's τ Librae (tau Librae) 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 τ Librae
The image below is a photograph of τ Librae 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 τ Librae is -0.015 arcsec per year in Right Ascension and -0.03 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.
Distance of τ Librae from the Sun and relative movement
τ Librae is distant 444.75 light years from the Sun and it is moving far from the Sun at the speed of 3 kilometers per second.
Spectral properties of τ Librae
τ Librae belongs to spectral class B2 and has a luminosity class of V corresponding to a main-sequence star.
The red dot in the diagram below shows where τ Librae is situated in the Hertzsprung–Russell diagram.