Iota Pictoris

{{Short description|Star in the constellation Pictor}}

{{Starbox begin}}

{{Starbox observe 2s

| epoch = J2000.0

| equinox = J2000.0 (ICRS)

| constell = Pictor

| component1 = ι Pic A

| ra1 = {{RA|04|50|55.32684}}

| dec1 = {{DEC|-53|27|41.2300}}

| appmag_v1 = 5.63

| component2 = ι Pic B

| ra2 = {{RA|04|50|56.49825}}

| dec2 = {{DEC|-53|27|34.9159}}

| appmag_v2 = 6.47

}}

{{Starbox character

| component1 = ι Pic A

| class = F0 V

| b-v = 0.32

| u-b = 0.06

| r-i =

| variable =

| component2 = ι Pic B

| class2 = F4 V

| b-v2 = 0.37

}}

{{Starbox astrometry

| component1 = ι Pic A

| radial_v = {{Val|8.6|3.4}}

| prop_mo_ra = −98.707

| prop_mo_dec = +80.769

| parallax = 24.9211

| p_error = 0.1559

| parallax_footnote =

| absmag_v = 2.50

| component2 = ι Pic B

| radial_v2 = {{Val|23.3|1.0}}

| prop_mo_ra2 = −98.707

| prop_mo_dec2 = +66.139

| parallax2 = 25.6610

| p_error2 = 0.4106

| parallax_footnote2 =

| absmag_v2 = 3.30

}}

{{Starbox detail

| source =

| component1 = ι Pic A

| mass = 1.51

| radius = {{Val|1.80|0.23|0.11}}

| gravity = {{Val|4.28|0.14}}

| metal_fe =

| age_myr = 696

| luminosity = {{Val|7.2|0.1}}

| temperature = {{Val|7331|249|fmt=commas}}

| rotational_velocity =

| component2 = ι Pic B

| mass2 = 2.76

| radius2 = {{Val|1.48|0.04|0.06}}

| gravity2 = {{Val|4.24|0.14}}

| metal_fe2 =

| age_myr2 = 516

| 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=

{{citation

| 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=. }}

{{citation

| 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=. }}

{{citation

| 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=. }}

{{citation

| 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 }}

{{citation

| 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=. }}

{{cite simbad

| title=iot Pic

| accessdate=2017-06-21 | postscript=. }}

  • {{cite simbad|title=* iot Pic A}}
  • {{cite simbad|title=* iot Pic B}}

{{cite DR2}}

}}

{{Stars of Pictor|state=collapsed}}

{{DEFAULTSORT:Iota Pictoris}}

Category:F-type main-sequence stars

Category:Binary stars

Category:Spectroscopic binaries

Category:Pictor

Pictoris, Iota

Category:Durchmusterung objects

31203 4

022531 4

1563 4