36 Ophiuchi: Difference between revisions
Content deleted Content added
astrometry update |
m robot interwiki standardization |
||
Line 59: | Line 59: | ||
[[Category:Triple star systems]] |
[[Category:Triple star systems]] |
||
[[Category:Flamsteed objects|Ophiuchi, 36]] |
[[Category:Flamsteed objects|Ophiuchi, 36]] |
||
⚫ | |||
[[sk:36 Ophiuchi]] |
[[sk:36 Ophiuchi]] |
||
⚫ |
Revision as of 16:31, 12 July 2006
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Ophiuchus |
Right ascension | AB: 17h 15m 21s C: 17h 16m 13.4s |
Declination | AB: -26° 36' 10" C: -26° 32' 46" |
Apparent magnitude (V) | 4.32/?/6.32 |
Characteristics | |
Spectral type | K0 Ve/K1 Ve/K5 V |
U−B color index | 0.51/?/1.04 |
B−V color index | 0.85/?/1.15 |
Variable type | ? |
Astrometry | |
Radial velocity (Rv) | +0.0/+0.5/-0.6 km/s |
Proper motion (μ) | RA: -473.69 mas/yr Dec.: -1143.93 mas/yr |
Parallax (π) | 167.51 ± 0.75 mas |
Distance | 19.47 ± 0.09 ly (5.97 ± 0.03 pc) |
Absolute magnitude (MV) | 5.44//7.44 |
Orbit | |
Companion | 36 Ophiuchi B |
Period (P) | 568.9 yr |
Semi-major axis (a) | 14.7″ |
Eccentricity (e) | 0.922 |
Inclination (i) | 99.6° |
Longitude of the node (Ω) | -83.6° |
Periastron epoch (T) | 1763.39 |
Details | |
Mass | 0.85/0.85/0.71 M☉ |
Radius | 0.81/0.81/0.72 R☉ |
Luminosity | 0.28/0.27/0.09 L☉ |
Temperature | ? K |
Metallicity | 50-98/120-250/46-100 |
Rotation | ? |
Age | ? years |
Other designations | |
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.
36 Ophiuchi in fiction
In Frank Herbert's Dune universe, the planet Giedi Prime orbits 36 Ophiuchi B.
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.
External links
- "36 Ophiuchi". SolStation. Retrieved November 3.
{{cite web}}
: Check date values in:|accessdate=
(help); Unknown parameter|accessyear=
ignored (|access-date=
suggested) (help)