HD 13189
{{Short description|Orange-hued star in the constellation Triangulum}}
{{Starbox begin
| name = HD 13189
}}
{{Starbox image
| image = 200px
| caption = HD 13189 as portrayed in Celestia.
| credit =
}}
{{Starbox observe
| epoch = J2000.0
| constell = Triangulum
}}
{{Starbox character
| u-b =
| variable =
}}
{{Starbox astrometry
| prop_mo_ra = 2.306{{±|0.024}}
| prop_mo_dec = 4.935{{±|0.022}}
| parallax = 2.0450
| p_error = 0.0240
}}
{{Starbox detail
}}
{{Starbox catalog
| names = {{odlist | BD=+31°370 | HIP=10085 | SAO=55309 }}
}}
{{Starbox reference
| Simbad = HD+13189
}}
{{Starbox end}}
HD 13189 is a star with an orbiting companion in the northern constellation of Triangulum constellation. With an apparent visual magnitude of +7.57, it is too faint to be visible to the normal human eye. The distance to this system is approximately 1,590 light years based on parallax measurements, and it is drifting further away with a radial velocity of 25.39 km/s. In 2005, a planetary companion or brown dwarf was announced in orbit around this star.
It has a spectral classification of K1II-III, making it a giant star that has evolved away from the main sequence after exhausting the hydrogen at its core. The mass is 1.2 times the Sun's, while measurements of the star's radius give estimates of {{solar radius|38|link=y}}. The atmosphere of the star displays short period radial velocity variations with a primary period of 4.89 days. This behavior is typical for giant K-type stars such as this and it is not the result of a close-orbit planetary companion.
HD 13189 b
{{Infobox planet
| name = HD 13189 b
| image = HD 13189 b planet.png
| caption = HD 13189 b as rendered in Celestia
| discoverer = Hatzes et al.
| discovery_site = Tautenburg, Germany
| discovered = 2005
| discovery_method = Radial Velocity
| apsis = astron
| semimajor = {{convert|1.85|±|0.35|AU|km|abbr=on}}
| eccentricity = 0.28 ± 0.06
| period = 471.6 ± 6 d
| time_periastron = 2452327.9 ± 20.2
| arg_peri = 160.7 ± 12
| semi-amplitude = 6.8 ± 1.5
| mass = >14 ± 6 {{Jupiter mass|link=y}}
}}
HD 13189 b is an exoplanet or brown dwarf with mass ranges from 8 to 20 Jupiter mass. This object is located at a mean distance of 277 Gm (1.85 AU) from the star, taking 472 days to make one elliptical orbit.
This object was discovered in Tautenburg, Germany in 2005.[http://austral.as.utexas.edu/planets/hd13189/hd13189.html A Giant Planet Around The Massive Giant Star HD 13189 ] {{webarchive|url=https://web.archive.org/web/20150720062004/http://austral.as.utexas.edu/planets/hd13189/hd13189.html |date=2015-07-20 }}
{{Clear}}
References
{{Reflist|refs=
{{cite journal | display-authors=1 | last1=Hatzes | first1=A. P. | last2=Guenther | first2=E. W. | last3=Endl | first3=M. | last4=Cochran | first4=W. D. | last5=Döllinger | first5=M. P. | last6=Bedalov | first6=A. | title=A giant planet around the massive giant star HD 13189 | journal=Astronomy and Astrophysics | date=2005 | volume=437 | issue=2 | pages=743–751 | doi=10.1051/0004-6361:20052850 | bibcode=2005A&A...437..743H| doi-access=free }}
{{Cite Gaia DR3|325494788018024576}}
| last1=Anderson | first1=E. | last2=Francis | first2=Ch.
| title=XHIP: An extended hipparcos compilation
| journal=Astronomy Letters
| volume=38 | issue=5 | pages=331 | year=2012
| bibcode=2012AstL...38..331A | arxiv=1108.4971
| doi=10.1134/S1063773712050015 | s2cid=119257644 }}
}}
External links
- {{cite web |url=http://simbad.u-strasbg.fr/simbad/sim-id?protocol=html&Ident=HD+13189&NbIdent=1&Radius=2&Radius.unit=arcmin&submit=submit+id |title=HD 13189 -- Star |work=SIMBAD |access-date=December 21, 2007 }}
- {{cite web |url=http://simbad.u-strasbg.fr/simbad/sim-id?Ident=HD+13189+b |title=HD 13189 b -- Extra-solar Planet Candidate |work=SIMBAD |access-date=December 21, 2007 }}
{{Sky|02|09|40.1717|+|32|18|59.1690|1000000000}}
{{Stars of Triangulum}}
{{DEFAULTSORT:HD 13189}}