· · · ·


Oculus Australis, Parilicium, Alpha Tauri, 87 Tauri

Proper NamesAldebaran, Oculus Australis, Paralicium
Bayer DesignationAlpha Tauri
Flamsteed Number87 Tauri
HR (BSC)1457
Right Ascension4h 35m 55s
Declination+16° 30' 33"
Distance67 light years
20 parsecs
MagnitudeApparent: +1.0
Absolute: -0.6
Spectral ClassK5III Orange Giant
Planets in this systemAlpha Tauri b (Aldebaran b), gas giant (hot Jupiter) (unconfirmed)
Optimum VisibilityDecember
NotesA vast giant star, more than forty times the diameter of the Sun, Aldebaran has appears to have a planetary system with at least one planet in orbit, designated Aldebaran b and belonging to the class known as 'hot Jupiters'.
Location of Aldebaran

Aldebaran is the unmistakable bright 'eye' in the face of Taurus the Bull. Most of the stars in this busy region belong to the cluster known as the Hyades, but orange Aldebaran does not: it is about 100 light years nearer to Earth than the stars of the Hyades cluster.

A prominent orange giant, the 'eye' of the constellation Taurus. Its name means 'the follower', because it follows the Pleiades across northern winter skies.

Orange Aldebaran, seen against the backdrop of the southern stars of the Hyades cluster. Aldebaran is not a member of the Hyades, but lies in the foreground on the same line of sight from Earth. Imagery provided by Aladin sky atlas


Related Entries