Lambda Leonis
Encyclopedia
Lambda Leonis is a star
in the constellation
Leo
. It has the traditional name Alterf, from the Arabic
الطرف "the view (of the lion)".
This star, along with ξ Cnc
, were the Persian Nahn, "the Nose", and the Coptic Piautos, "the Eye", both lunar asterisms. .
Lambda Leonis is of spectral class
K5 and apparent magnitude
+4.32. It is approximately 336 light years from Earth
.
Coordinates:
Star
A star is a massive, luminous sphere of plasma held together by gravity. At the end of its lifetime, a star can also contain a proportion of degenerate matter. The nearest star to Earth is the Sun, which is the source of most of the energy on Earth...
in the constellation
Constellation
In modern astronomy, a constellation is an internationally defined area of the celestial sphere. These areas are grouped around asterisms, patterns formed by prominent stars within apparent proximity to one another on Earth's night sky....
Leo
Leo (constellation)
Leo is one of the constellations of the zodiac. Its name is Latin for lion. Its symbol is . Leo lies between dim Cancer to the west and Virgo to the east.-Stars:...
. It has the traditional name Alterf, from the Arabic
Arabic language
Arabic is a name applied to the descendants of the Classical Arabic language of the 6th century AD, used most prominently in the Quran, the Islamic Holy Book...
الطرف "the view (of the lion)".
This star, along with ξ Cnc
Xi Cancri
Xi Cancri is a spectroscopic binary in the constellation Cancer. It is approximately 381 light years from Earth.-Name:This star, along with λ Leo , were the Persian Nahn, "the Nose", and the Coptic Piautos, "the Eye", both lunar asterisms..Nahn was the title of this star in the catalogue of stars...
, were the Persian Nahn, "the Nose", and the Coptic Piautos, "the Eye", both lunar asterisms. .
Lambda Leonis is of spectral class
Stellar classification
In astronomy, stellar classification is a classification of stars based on their spectral characteristics. The spectral class of a star is a designated class of a star describing the ionization of its chromosphere, what atomic excitations are most prominent in the light, giving an objective measure...
K5 and apparent magnitude
Apparent magnitude
The apparent magnitude of a celestial body is a measure of its brightness as seen by an observer on Earth, adjusted to the value it would have in the absence of the atmosphere...
+4.32. It is approximately 336 light years from Earth
Earth
Earth is the third planet from the Sun, and the densest and fifth-largest of the eight planets in the Solar System. It is also the largest of the Solar System's four terrestrial planets...
.
Coordinates:
- Right ascensionRight ascensionRight ascension is the astronomical term for one of the two coordinates of a point on the celestial sphere when using the equatorial coordinate system. The other coordinate is the declination.-Explanation:...
: 09h 31min 43.240s - DeclinationDeclinationIn astronomy, declination is one of the two coordinates of the equatorial coordinate system, the other being either right ascension or hour angle. Declination in astronomy is comparable to geographic latitude, but projected onto the celestial sphere. Declination is measured in degrees north and...
: +22° 58' 05.036"