Markab

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Star
α Pegasi
AladinLite
Observation
dates equinox :  J2000.0 , epoch : J2000.0
Constellation Pegasus
Right ascension 23 h 04 m 45.7 s
declination + 15 ° 12 ′ 19 ″
Apparent brightness 2.49 likes
Typing
B − V color index −0.04 
U − B color index −0.05 
R − I index −0.03 
Spectral class B9.5 III
Astrometry
Radial velocity (−2.7 ± 0.8) km / s
parallax (24.46 ± 0.19)  mas
distance (133.3 ± 1.0)  Lj
(40.88 ± 0.32)  pc  
Visual absolute brightness M vis approx. −0.6 mag
Proper movement 
Rec. Share: (+60.40 ± 0.17)  mas / a
Dec. portion: (−41.30 ± 0.16)  mas / a
Physical Properties
Other names
and catalog entries
Bayer name α pegasi
Flamsteed name 54 pegasi
Bonn survey BD + 14 ° 4926
Bright Star Catalog HR 8781 [1]
Henry Draper Catalog HD 218045 [2]
Hipparcos catalog HIP 113963 [3]
SAO catalog SAO 108378 [4]
Tycho catalog TYC 1711-2475-1 [5]
2MASS catalog 2MASS J23044565 + 1512191 [6]
Other names Markab, FK5  871
annotation
  1. ↑ estimated from apparent brightness and distance

Alpha Pegasi is a star in the constellation Pegasus . It is about 133 light years away and has an apparent visual magnitude of 2.5 mag.

The star bears the proper name Markab (or "Mirfak", Arabic "shoulder"). The name Markab originally comes from Arabic مركب, DMG Markab  'horse saddle', through incorrect transcription it became Mankib , which is derived from Arabic منكب الفرس, DMG Mankib al-Faras  'shoulder (of Pegasus)'.

See also

Web links

Individual evidence

  1. ↑ a b c Hipparcos catalog (ESA 1997)
  2. ↑ a b c Bright Star Catalog
  3. ↑ Pulkovo radial velocities for 35493 HIP stars
  4. ↑ a b c Hipparcos, the New Reduction (van Leeuwen, 2007)