τ1 Hydrae (tau1 Hydrae)
τ1 Hydrae is a double main-sequence star in the constellation of Hydra.
τ1 Hydrae visual magnitude is 4.6. Because of its moderate brightness, τ1 Hydrae 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 τ1 Hydrae:
Celestial coordinates and finder chart of τ1 Hydrae
τ1 Hydrae 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 τ1 Hydrae are provided in the following table:
The simplified sky map below shows the position of τ1 Hydrae in the sky:
Visibility of τ1 Hydrae from your location
Today's τ1 Hydrae (tau1 Hydrae) rise, transit and set times from Greenwich, United Kingdom are the following (all times relative to the local timezone Europe/London):
Digitized Sky Survey image of τ1 Hydrae
The image below is a photograph of τ1 Hydrae 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 τ1 Hydrae is 0.13 arcsec per year in Right Ascension and -0.015 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.
Distance of τ1 Hydrae from the Sun and relative movement
τ1 Hydrae is distant 55.75 light years from the Sun and it is moving far from the Sun at the speed of 10 kilometers per second.
Spectral properties of τ1 Hydrae
τ1 Hydrae belongs to spectral class F6 and has a luminosity class of V corresponding to a main-sequence star.
The red dot in the diagram below shows where τ1 Hydrae is situated in the Hertzsprung–Russell diagram.
τ1 Hydrae star system properties
τ1 Hydrae is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the τ1 Hydrae double sysyem: