Pi Sculptoris

{{Starbox image

| image =

{{Location mark

|image=Sculptor constellation map.svg|alt=|float=center|width=280

|label=|position=right

|mark=Red circle.svg|mark_width=10|mark_link=Pi Sculptoris

|x=163|y=370

}}

| caption = Location of π Sculptoris (circled)

}}

{{Starbox observe

| epoch = J2000

| constell = Sculptor

| ra = {{RA|01|42|08.62230}}

| dec = {{DEC|−32|19|37.2862}}

| appmag_v = 5.25

}}

{{Starbox character

| type = horizontal branch

| class = K1II/III

| b-v = +1.05

| u-b = +0.79

| variable =

}}

{{Starbox astrometry

| radial_v = {{Val|+13.83|0.15}}

| prop_mo_ra = −76.714

| prop_mo_dec = +4.521

| parallax = 15.0534

| p_error = 0.1667

| parallax_footnote =

| absmag_v = 1.16

}}

{{Starbox detail

| mass = 1.52

| radius = {{Val|9.28|0.30|2.31}}

| temperature = {{Val|4800|737|75|fmt=commas}}

| luminosity = {{Val|41.173|0.53}}

| rotational_velocity = < 1.6

| gravity = 2.69

| metal_fe = −0.22

}}

{{Starbox catalog

| names = {{odlist | B=π Scl | CPD=−32°4292 | FK5=1048 | HD=10537 | HIP=7955 | HR=497 | SAO=193263 | GC=2085 | GSC=07003-02207 }}

}}

{{Starbox reference

| Simbad = Pi+Sculptoris

}}

π Sculptoris, Latinized as Pi Sculptoris, is candidate astrometric binary star system in the southern constellation Sculptor, positioned near the eastern constellation border with Fornax. It has an orange hue and is dimly visible to the naked eye with an apparent visual magnitude of 5.25. Based upon parallax measurements, the system is located at a distance of 66 light years from the Sun, and is drifting further away with a radial velocity of +14 km/s.

The visible component is an aging giant/bright giant star with a stellar classification of K1II/III. It is a red clump giant, which indicates it is on the horizontal branch and is generating energy through core helium fusion. The star has 1.5 times the mass of the Sun and 9.3 times the Sun's radius. It is radiating 41 times the luminosity of the Sun from its swollen photosphere at an effective temperature of 4,800 K.

References

{{reflist|refs=

{{cite journal

| 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

| bibcode=2008MNRAS.389..869E | arxiv=0806.2878

| doi=10.1111/j.1365-2966.2008.13596.x | doi-access=free | s2cid=14878976 }}

{{cite journal

| title=XHIP: An extended hipparcos compilation

| journal=Astronomy Letters

| volume=38 | issue=5 | pages=331 | year=2012

| last1=Anderson | first1=E. | last2=Francis | first2=Ch.

| bibcode=2012AstL...38..331A | arxiv=1108.4971

| doi=10.1134/S1063773712050015

| s2cid=119257644

}} [http://vizier.u-strasbg.fr/viz-bin/VizieR-4?-source=V/137D/XHIP&HIP=7955 Vizier catalog entry]

{{cite book

| last=Houk | first=N.

| title=Michigan Catalogue of Two-dimensional Spectral Types for the HD stars. Declinations -40_ƒ0 to -26_ƒ0

| volume=3 | year=1982

| bibcode=1982mcts.book.....H }}

{{cite journal

| last=Mermilliod | first=J. C.

| title=Homogeneous Means in the UBV System

| journal=VizieR On-line Data Catalog: II/168. Originally Published in: Institut d'Astronomie

| volume=2168 | year=2006

| bibcode=2006yCat.2168....0M

}}[http://vizier.u-strasbg.fr/viz-bin/VizieR-4?-source=II/168/ubvmeans&LID=%2B100010537 Vizier catalog entry]

{{cite journal

| display-authors=1 | last1=Liu | first1=Y. J.

| last2=Zhao | first2=G. | last3=Shi | first3=J. R.

| last4=Pietrzynski | first4=G. | last5=Gieren | first5=W.

| title=The abundances of nearby red clump giants

| journal=Monthly Notices of the Royal Astronomical Society

| volume=382 | issue=2 | pages=553 | year=2007

| doi=10.1111/j.1365-2966.2007.11852.x

| bibcode=2007MNRAS.382..553L | doi-access=free }}

{{cite journal

| last1=De Medeiros | first1=J. R. | last2=Alves | first2=S.

| last3=Udry | first3=S. | last4=Andersen | first4=J.

| last5=Nordström | first5=B. | last6=Mayor | first6=M.

| title=A catalog of rotational and radial velocities for evolved stars

| display-authors=1 | journal=Astronomy & Astrophysics

| volume=561 | pages=A126 | year=2014

| bibcode=2014A&A...561A.126D | arxiv=1312.3474

| doi=10.1051/0004-6361/201220762

| s2cid=54046583 }} [http://vizier.u-strasbg.fr/viz-bin/VizieR-4?-source=J/A%2bA/561/A126/table1&HD=10537 Vizier catalog entry]

}}

Category:K-type bright giants

Category:K-type giants

Category:Horizontal-branch stars

Category:Astrometric binaries

Category:Sculptor (constellation)