36 Ophiuchi

Starbox begin
name=36 Ophiuchi A/B/C Starbox observe
epoch=J2000
constell=Ophiuchus
ra=A: RA|17|15|20.851
B: RA|17|15|20.978
C: RA|17|16|13.3626cite web
url=http://simbad.u-strasbg.fr/
title=SIMBAD Astronomical Database
publisher=Centre de Données astronomiques de Strasbourg
accessdate=2007-06-19

* A: [http://simbad.u-strasbg.fr/simbad/sim-id?Ident=HD%20155886 LHS 437 -- High proper-motion Star]
* B: [http://simbad.u-strasbg.fr/simbad/sim-id?Ident=HD%20155885 LHS 438 -- High proper-motion Star ]
* C: [http://simbad.u-strasbg.fr/simbad/sim-id?Ident=HD%20156026 V* V2215 Oph -- Variable of RS CVn type] ]
dec=A: DEC| -26|36|09.04
B: DEC| -26|36|10.18
C: DEC| -26|32|46.128
appmag_v=5.29/5.33/6.34 Starbox character
class=K0 V/K1 V/K5 V
b-v=0.86(AB)/1.15
u-b=0.51(AB)/1.04
variable=C: RS CV Starbox astrometry
radial_v=-0.6/0.0/-1.6
prop_mo_ra=-488.2/-473/-479.72
prop_mo_dec=-1156.0/-1143/-1123.37
parallax=167.56
p_error=1.06
parallax_footnote=
absmag_v= Starbox visbin
name=36 Ophiuchi B
period=568.9
axis=14.7
eccentricity=0.922
inclination=99.6
node=-83.6
periastron=1763.39 Starbox detail
age=?
metal=A: 50-98%Sun
B: 120-250%Sun
C: 46-100%Sun
mass=0.85/0.85/0.71
radius=0.81/0.81/0.72
rotation=?
luminosity=0.28/0.27/0.09 | temperature=5125/5100/4550 Starbox catalog
names=36 Oph, GJ 663 AB and 664, HR 6402/6401/-, CD CD-26°12026, HD 155886/155885/156026, GCTP 3908.00 AB/3913.00, LHS 437/438/439, SAO 185198/185199/185213, HIP 84405/84478.

36 Ophiuchi is a triple star system 19.5 light years away from Earth. It is in constellation Ophiuchus.

The primary and secondary stars are nearly identical orange main sequence dwarves of spectral type K0/K1 and the tertiary star is an orange main sequence dwarf of spectral type K5.

Star C is separated from the A-B pair by 700 arc seconds, compared to a minimum of 4.6 arcsec for A-B, so it has a negligible effect on the movements of the A-B pair. Both A and B have active chromospheres.

ee also

* 36 Ophiuchi in fiction

References

* A.W. Irwin "et al", "36 Ophiuchi AB: Incompatibility of the Orbit and Precise Radial Velocities", "Publications of the Astronomical Society of the Pacific", July, 1996.
* G. Cayrel de Strobel, Y. Lebreton, M.-N. Perrin, R. Cayrel, "A thorough spectroscopic study of the very nearby triple system - 36 Ophiuchi", "Astronomy and Astrophysics", vol. 225, no. 2, Nov. 1989, p. 369-380.

External links

* cite web
title=36 Ophiuchi | work=SolStation
url=http://www.solstation.com/stars/36ophiu3.htm
accessmonthday=3 November
accessyear=2005