Secunda Hyadum - δ1 Tauri (delta1 Tauri)
Secunda Hyadum, also designated as δ1 Tauri (delta1 Tauri), is a variable and multiple hypergiant star in the constellation of Taurus.
Secunda Hyadum visual magnitude is 3.76. Because of its moderate brightness, Secunda Hyadum 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 Secunda Hyadum:
Celestial coordinates and finder chart of Secunda Hyadum
Secunda Hyadum 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 Secunda Hyadum are provided in the following table:
The simplified sky map below shows the position of Secunda Hyadum in the sky:
Visibility of Secunda Hyadum from your location
Digitized Sky Survey image of Secunda Hyadum
The image below is a photograph of Secunda Hyadum 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 Secunda Hyadum is 0.107 arcsec per year in Right Ascension and -0.03 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.
Distance of Secunda Hyadum from the Sun and relative movement
Secunda Hyadum is distant 153.12 light years from the Sun and it is moving far from the Sun at the speed of 39 kilometers per second.
Spectral properties of Secunda Hyadum
Secunda Hyadum belongs to spectral class K0 and has a luminosity class of III corresponding to a hypergiant star.
The red dot in the diagram below shows where Secunda Hyadum is situated in the Hertzsprung–Russell diagram.
Secunda Hyadum star system properties
Secunda Hyadum 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 Secunda Hyadum double sysyem: