UNUKALHAI (Alpha Serpentis). Seemingly a true tongue-twister, Unukalhai (oo-nook-ul-high), at bright third magnitude (2.65), is the brightest star as well as the Alpha star of Serpens, the Serpent, ...
Unukalhai is an orange K2IIIbCN1 giant star having about 38 times the luminosity of the sun.
Other Designations For This Star
Flamsteed ...
UNUKALHAI (Alpha Ser)
Alya (Theta 1 Ser)
Messier Objects
M5 (globular cluster)
M16 part of the Eagle Nebula (open cluster) ...
ICRS 2000.0) of Constellation Libra, the Scales -- northeast of Delta Librae, north of Gamma Librae and Graffias (Beta Scorpii), and southwest of Epsilon (Yed Posterior) and Delta (Yed Prior) Ophiuchi, and Mu, Epsilon, and Alpha (Unukalhai) Serpentis.
The star Alpha Serpentis is called Unukalhai from the Arabic meaning ‘the serpent's neck', where it is located. The tip of the serpent's tail is marked by Theta Serpentis, called Alya, an Arabic word that actually refers to a sheep's tail.
It is a multiple star also known as Unukalhai ("the neck of the snake") and Cor Serpentis ("the heart of the snake"). Unukalhai is part of Serpens Caput and lies 73.2 light-years from Earth.
The brightest star, alpha Serpentis, is called Unukalhai, meaning "Neck of the Snake". It is 67 light years away, and is approximately ten times the size of the sun.
Double stars: ...
Only one of the stars in Serpens is brighter than third magnitude, so the constellation is not easy to perceive. α Serpentis, named Unukalhai, is in the head part. δ Serpentis, also in the head, is a double star only 27 light-years from Earth.
The main named stars in Serpens Caput and Serpens Cauda are: (Greek alphabet)
Alya (θ Ser), Leiolepidotus (μ Ser), Unukalhai (α Ser).
Constellations adjoining Serpens Cauda:
Aquila, Hercules, Ophiuchus, Sagittarius, Scutum, ...
 See also: Star, Serpens, Constellation, Serpens Caput, Ophiuchus
|
