Omega2 Cygni

Starbox begin
name=ω² Cyg AStarbox image


caption = Ruchba 1 e 2 Starbox observe
epoch=J2000
ra=20h 31m 18.8163s
dec=+49° 13' 13.07"'
appmag_v=5.468
constell=Cygnus Starbox character
class=M2III
b-v=?
u-b=?
variable=None Starbox astrometry
radial_v=-64.0
prop_mo_ra=8.79
prop_mo_dec= -31.28
parallax=8.07
p_error=0.49
absmag_v=7.036 Starbox detail
mass=?
radius=?
luminosity=?
temperature=?
metal=?
rotation=?
age=? Starbox visbin
name=ω² Cyg B
period=
axis=
eccentricity=
inclination=
node=
periastron= Starbox catalog
names= 46 Cyg, DO 38500, HR 7851, RAFGL 2598, GC 28569, IDS 20282+4853 A, SAO 49741, AG+49° 1686, GCRV 12835, IRAS 20297+4903, BD+48° 3154, TYC 3581-2030-1, BDS 10315 A, GSC 03581-02030, 2MASS J20311880+4913130, CCDM J20313+4914A, HD 195774, N30 4534, HIC 101243, NSV 13128, CSV 101996, HIP 101243 PPM 60073. Starbox reference
Simbad=Omega2+Cygni

Omega-2 Cygni (ω² Cyg / ω² Cygni) is a star in the constellation Cygnus. It also has the traditional name Ruchba.

It is a double star about 500 light years from Earth, consisting of a magnitude 5.44 star of spectral class M2 and a 6.6 magnitude star of spectral class A0. The stars are 256" apart and can be seen in binoculars. Because of the color contrast (red main star and blue companion), Ruchba is a beautiful object for amateur astronomers.

References

* http://skyatlas.rgbstore.com/index.jsp?rightAscension=20.522&declination=49.221&viewAngle=30