Iota Pictoris
{{Short description|Star in the constellation Pictor}}
{{Starbox begin}}
{{Starbox observe 2s
| epoch = J2000.0
| constell = Pictor
| component1 = ι Pic A
| dec1 = {{DEC|-53|27|41.2300}}
| component2 = ι Pic B
| dec2 = {{DEC|-53|27|34.9159}}
}}
{{Starbox character
| component1 = ι Pic A
| r-i =
| variable =
| component2 = ι Pic B
}}
{{Starbox astrometry
| component1 = ι Pic A
| parallax = 24.9211
| p_error = 0.1559
| component2 = ι Pic B
| radial_v2 = {{Val|23.3|1.0}}
| parallax2 = 25.6610
| p_error2 = 0.4106
}}
{{Starbox detail
| source =
| component1 = ι Pic A
| radius = {{Val|1.80|0.23|0.11}}
| metal_fe =
| luminosity = {{Val|7.2|0.1}}
| temperature = {{Val|7331|249|fmt=commas}}
| rotational_velocity =
| component2 = ι Pic B
| radius2 = {{Val|1.48|0.04|0.06}}
| gravity2 = {{Val|4.24|0.14}}
| metal_fe2 =
| luminosity2 = {{Val|3.4|0.06}}
| temperature2 = {{Val|6435|219|fmt=commas}}
}}
{{Starbox catalog
| names = {{odlist | B=ι Pic | CPD=-53°760 | WDS=J04509-5328AB }}
| component1 = ι Pic A
| names1 = {{odlist | HD=31203 | HIP=22531 | HR=1563 | SAO=233709 }}
| component2 = ι Pic B
| names2 = {{odlist | HD=31204 | HIP=22534 | HR=1564 | SAO=233710 }}
}}
{{Starbox reference
| Simbad = iot+Pic
}}
{{starbox end}}
ι Pictoris, Latinized from Iota Pictoris, is a suspected multiple star system in the southern Pictor constellation. It is visible to the naked eye as a dim, yellow-white-hued point of light with a combined apparent visual magnitude of 5.28. The two resolvable components have an angular separation of {{Val|8.2|ul=arcseconds}}, equivalent to a physical projected separation of around {{Val|450|ul=AU}}. They are located at a distance of around 127–131 light-years from the Sun, based on parallax.
The two visible components appear as F-type main-sequence stars: the magnitude 5.63 component A has a stellar classification of F0 V, while the cooler, fainter secondary is of class F4 V. Both are themselves are suspected spectroscopic binary stars consisting of roughly equal components. Component B actually has a higher estimated mass than Component A, although the radius of B is smaller. They are both more luminous than the Sun, and have an estimated age of around 500–600 million years.
References
{{reflist|refs=
| last1=Eggleton | first1=P. P. | last2=Tokovinin | first2=A. A.
| title=A catalogue of multiplicity among bright stellar systems
| journal=Monthly Notices of the Royal Astronomical Society
| volume=389 | issue=2 | pages=869–879 | date=September 2008
| doi=10.1111/j.1365-2966.2008.13596.x | doi-access=free | bibcode=2008MNRAS.389..869E
| arxiv=0806.2878 | s2cid=14878976 | postscript=. }}
| last1=de Bruijne | first1=J. H. J. | last2=Eilers | first2=A.-C.
| title=Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project
| journal=Astronomy & Astrophysics
| volume=546 | id=A61 | pages=14 | date=October 2012
| doi=10.1051/0004-6361/201219219 | bibcode=2012A&A...546A..61D
| arxiv=1208.3048 | s2cid=59451347 | postscript=. }}
| last1=David | first1=Trevor J. | last2=Hillenbrand | first2=Lynne A.
| title=The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets
| journal=The Astrophysical Journal
| volume=804 | issue=2 | pages=146 | year=2015
| bibcode=2015ApJ...804..146D | doi=10.1088/0004-637X/804/2/146
| arxiv=1501.03154 | s2cid=33401607 | postscript=. }}
| title=Close visual binaries. I - MK classifications
| journal=Astrophysical Journal Supplement Series
| last1=Corbally | first1=C. J. | postscript=.
| volume=55 | pages=657 | year=1984
| bibcode=1984ApJS...55..657C | doi=10.1086/190973 }}
| display-authors=1 | last1=Tokovinin | first1=Andrei
| last2=Hartung | first2=Markus | last3=Hayward | first3=Thomas L
| title=Subsystems in Nearby Solar-type Wide Binaries
| journal=The Astronomical Journal
| volume=140 | issue=2 | pages=510–517 | date=August 2010
| bibcode=2010AJ....140..510T | doi=10.1088/0004-6256/140/2/510
| arxiv=1006.1253 | s2cid=73629363 | postscript=. }}
| title=iot Pic
| accessdate=2017-06-21 | postscript=. }}
- {{cite simbad|title=* iot Pic A}}
- {{cite simbad|title=* iot Pic B}}
}}
{{Stars of Pictor|state=collapsed}}
{{DEFAULTSORT:Iota Pictoris}}
Category:F-type main-sequence stars
Category:Spectroscopic binaries