Xi Persei

from Wikipedia, the free encyclopedia
Star
ξ Persei (Menkib)
AladinLite
Observation
dates equinox :  J2000.0 , epoch : J2000.0
Constellation Perseus
Right ascension 3 h 58 m 57.9 s
declination + 35 ° 47 ′ 27.7 ″
Apparent brightness 4.1 mag
Typing
B − V color index +0.01 
U − B color index −0.92 
R − I index −0.01 
Spectral class O7.5 IIIe
Astrometry
Radial velocity (+70 ± 2) km / s
parallax (2.62 ± 0.51)  mas
distance (1250 ± 250)  ly
(380 ± 70)  pc  
Proper movement 
Rec. Share: (+3.62 ± 0.61)  mas / a
Dec. portion: (+1.74 ± 0.50)  mas / a
Physical Properties
Other names
and catalog entries
Bayer name ξ Persei
Flamsteed name 46 Persei
Bonn survey BD + 35 ° 775
Bright Star Catalog HR 1228 [1]
Henry Draper Catalog HD 24912 [2]
Hipparcos catalog HIP 18614 [3]
SAO catalog SAO 56856 [4]
Tycho catalog TYC 2369-2273-1 [5]
Other names FK5  148 • 2E 916 • 2MASS J03585791 + 3547276 • GCRV 2275 • GSC 02369 + 01642 • GSC 02369 + 02273 • IRAS 03557 + 3538 • WDS J03590 + 3547

ξ Persei ( Xi Persei ), proper name Menkib , also transcribed as Menkhib or Menchib , comes from Arabic منكب, "shoulder", is a star of the spectral class O7.5 with an apparent magnitude of 4.1 mag. This makes it one of the few O stars in the sky that can be observed with the naked eye. Ξ Persei is believed to be a runaway star of the Perseus OB2 Association and is responsible for the ionization of NGC 1499 (the California Nebula).

swell

  1. ↑ a b c SIMBAD database
  2. ↑ a b c d Hipparchus catalog
  3. ↑ a b c Bright Star Catalog