Mu Lyrae
Encyclopedia
Mu Lyrae is a star
in the constellation
Lyra. It has the traditional name Alathfar, from the Arabic
الأظفر al-’uz̧fur "the talons (of the swooping eagle)", a name it shares with Eta Lyrae
(though the latter is typically spelled Aladfar in English).
Mu Lyrae has apparent magnitude
5.12 and belongs to the spectral class
A3IVn.
Coordinates (equinox J2000):
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....
Lyra. It has the traditional name Alathfar, 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...
الأظفر al-’uz̧fur "the talons (of the swooping eagle)", a name it shares with Eta Lyrae
Eta Lyrae
Eta Lyrae is a star in the constellation Lyra. It has the traditional name Aladfar, from the Arabic الأظفر al-’uz̧fur "the talons ", a name it shares with Mu Lyrae .Eta Lyrae belongs to spectral class B2.5IV and has apparent magnitude of +4.39...
(though the latter is typically spelled Aladfar in English).
Mu Lyrae has 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...
5.12 and belongs to the 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...
A3IVn.
Coordinates (equinox J2000):
- 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:...
: 18h24m13.80s - 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...
: +39°30'26.0"