HD 204521

From Wikipedia, the free encyclopedia
Jump to: navigation, search
HD 204521
The star is visually very close to β Cep (but not shown at this scale)

Observation data
Epoch J2000      Equinox J2000
Constellation Cepheus
Right ascension 21h 25m 16.798s[1]
Declination +70° 28′ 39.15″
Apparent magnitude (V) 7.3[1] (binoculars)
Spectral type G0V[2]
Radial velocity (Rv) -76.6[3] km/s
Parallax (π) 37.87[3] mas
Distance ~83.9 ly
(25.733 pc)
Other designations
BD+69 1169, GJ 4194, HIP 105766, HD 204521, TYC 4465-1133-1, SAO 10045[1]

HD 204521 is a potential Sun-like star (G5 spectral class) with an apparent magnitude of 7.3.[1] In the sky it is near the magnitude 3.2 star Beta Cephei (β Cep).

Bobylev's calculations from 2010 suggest that this star will pass about 2.20 parsecs (7.2 light-years) from the Sun in about 341 thousand years.[3]

See also[edit]


  1. ^ a b c d "HIP 105766". SIMBAD Astronomical Database. Retrieved 2010-03-22. 
  2. ^ Gray, R. O.; Corbally, C. J.; Garrison, R. F.; McFadden, M. T.; Robinson, P. E. (2003). "Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 Parsecs: The Northern Sample. I". The Astronomical Journal. 126 (4): 2048. arXiv:astro-ph/0308182Freely accessible. Bibcode:2003AJ....126.2048G. doi:10.1086/378365. 
  3. ^ a b c Bobylev, Vadim V. (March 2010). "Searching for Stars Closely Encountering with the Solar System". Astronomy Letters. 36 (3): 220–226. arXiv:1003.2160Freely accessible. Bibcode:2010AstL...36..220B. doi:10.1134/S1063773710030060. 

External links[edit]