Login
Login

HD 111232

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

{{Starbox begin}}

{{Starbox observe

| epoch = J2000

| constell = Musca

| ra = {{RA|12|48|51.75258}}

| dec = {{DEC|−68|25|30.5471}}

| appmag_v = 7.59

}}

{{Starbox character

| type =

| class = G8 V Fe-1.0

| b-v = {{Val|0.701|0.003}}

| u-b =

| variable =

}}

{{Starbox astrometry

| radial_v = {{val|104.53|0.13}}

| prop_mo_ra = {{val|27.283|0.021}}

| prop_mo_dec = {{val|112.918|0.024}}

| parallax = 34.6094

| p_error = 0.0239

| parallax_footnote = {{Cite Gaia DR3|5855730584310531200}}

| absmag_v = 5.25

}}

{{Starbox detail

| source =

| mass = {{Val|0.80|0.02}}

| radius = {{Val|0.88|0.01}}

| luminosity = {{Val|0.700|0.003}}

| gravity = {{Val|4.45|0.02}}

| temperature = {{Val|5648|30|fmt=commas}}

| metal_fe = −0.32

| rotational_velocity = 0.421

| age_gyr = {{Val|11.7|1.4}}

| rotation = {{val|30.7|ul=d}}

}}

{{Starbox catalog

| names = {{odlist | CPD=−67°2079 | HD=111232 | HIP=62534|2MASS=J12485177-6825304|Gaia DR2=5855730584310531200}}

}}

{{Starbox reference

| Simbad = HD+111232

}}

{{End}}

HD 111232 is a star in the southern constellation of Musca. It is too faint to be visible with the naked eye, having an apparent visual magnitude of 7.59. The distance to this star is 94.5 light years based on parallax. It is drifting away from the Sun with a radial velocity of +104 km/s, having come to within {{Convert|4.3279|pc|ly|1|disp=out|abbr=off}} some 264,700 years ago. The absolute magnitude of this star is 5.25, indicating it would have been visible to the naked eye at that time.

This is an ancient, thick disk population II star with an estimated age of twelve billion years. It is a G-type main-sequence star with a stellar classification of G8 V Fe-1.0, indicating an anomalous underabundance of iron in the stellar atmosphere. The star has 80% of the mass of the Sun and 88% of the Sun's radius. It is spinning slowly with a projected rotational velocity of 0.4 km/s. X-ray emission has not been detected, suggesting a low level of coronal activity. The star is radiating 70% of the luminosity of the Sun from its photosphere at an effective temperature of 5,648 K.

Planetary system

A superjovian planetary companion was detected by the CORALIE team, based on observations beginning in 2003. Planets around such metal-poor stars are rare (the only two known similar cases as of 2019 are HD 22781 and HD 181720).{{citation|arxiv=1902.04493|year=2019|doi=10.3390/geosciences9030105|last1=Adibekyan|first1=Vardan|title=Heavy Metal Rules. I. Exoplanet Incidence and Metallicity|journal=Geosciences|volume=9|issue=3|page=105|bibcode=2019Geosc...9..105A |s2cid=119089419|doi-access=free}} An astrometric measurement of the planet's inclination and true mass was published in 2022 as part of Gaia DR3. Later in 2022, these parameters were revised along with the detection of a second substellar companion, likely a brown dwarf.

{{OrbitboxPlanet begin

| table_ref =

| period_unit = year

}}

{{OrbitboxPlanet

| exoplanet = b

| mass = {{val|7.965|1.128|0.479}}

| period = {{val|3.201|0.002|0.001}}

| semimajor = {{val|2.148|0.088|0.097}}

| eccentricity = {{val|0.214|0.005|0.003}}

| inclination = {{val|93.521|16.622|18.063}}

}}

{{OrbitboxPlanet

| exoplanet = c

| mass = {{val|18.063|4.209|1.612}}

| period = {{val|72.478|14.115|12.341}}

| semimajor = {{val|17.250|2.158|2.151}}

| eccentricity = {{val|0.558|0.027|0.028}}

| inclination = {{val|87.902|13.916|22.591}}

}}

{{Orbitbox end}}

References

{{Reflist|refs=

{{Cite Gaia DR2|4794830231453653888}}

{{cite simbad | title=HD 111232 | access-date=2018-07-13}}

{{cite journal

| title=Low-Mass Companions for Five Solar-Type Stars From the Magellan Planet Search Program

| last1=Minniti | first1=Dante | last2=Butler | first2=R. Paul

| last3=López-Morales | first3=Mercedes | last4=Shectman | first4=Stephen A.

| last5=Adams | first5=Fred C. | last6=Arriagada | first6=Pamela

| last7=Boss | first7=Alan P. | last8=Chambers | first8=John E.

| display-authors=1 | journal=The Astrophysical Journal

| volume=693 | issue=2 | pages=1424–1430 | date=March 2009

| doi=10.1088/0004-637X/693/2/1424 | arxiv=0810.5348

| bibcode=2009ApJ...693.1424M | s2cid=119224845 }}

{{cite journal

| title=Coronal properties of planet-bearing stars

| display-authors=1 | last1=Poppenhaeger | first1=K.

| last2=Robrade | first2=J. | last3=Schmitt | first3=J. H. M. M.

| journal=Astronomy and Astrophysics

| volume=515 | id=A98 | pages=9 | date=June 2010

| doi=10.1051/0004-6361/201014245 | arxiv=1003.5802

| bibcode=2010A&A...515A..98P | s2cid=119260432 }}

{{cite journal

| title=On ancient solar-type stars

| last1=Fuhrmann | first1=Klaus | last2=Chini | first2=Rolf

| journal=Monthly Notices of the Royal Astronomical Society

| volume=482 | issue=1 | pages=471–489 | date=January 2019

| doi=10.1093/mnras/sty2660 | bibcode=2019MNRAS.482..471F | doi-access=free }}

{{cite journal

| last1=Bailer-Jones | first1=C.A.L. | last2=Rybizki | first2=J

| last3=Andrae | first3=R. | last4=Fouesnea | first4=M.

| title=New stellar encounters discovered in the second Gaia data release

| journal=Astronomy & Astrophysics

| volume=616 | pages=A37 | date=2018

| arxiv=1805.07581 | bibcode=2018A&A...616A..37B

| doi=10.1051/0004-6361/201833456 | s2cid=56269929 }}

{{cite journal

| title=XHIP: An extended hipparcos compilation

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

| journal=Astronomy Letters | arxiv=1108.4971

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

| bibcode=2012AstL...38..331A | doi=10.1134/S1063773712050015 | s2cid=119257644 }}

{{cite journal

| display-authors=1 | last1=Gray | first1=R. O.

| last2=Corbally | first2=C. J. | last3=Garrison | first3=R. F.

| last4=McFadden | first4=M. T. | last5=Robinson | first5=P. E.

| title=Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 Parsecs: The Northern Sample. I

| journal=The Astronomical Journal

| volume=126 | issue=4 | pages=2048 | year=2003

| arxiv=astro-ph/0308182 | doi=10.1086/378365

| bibcode=2003AJ....126.2048G | s2cid=119417105 }}

{{cite journal

| title=Spectroscopic Parameters and atmosphEric ChemIstriEs of Stars (SPECIES). I. Code description and dwarf stars catalogue

| last1=Soto | first1=M. G. | last2=Jenkins | first2=J. S.

| journal=Astronomy & Astrophysics

| volume=615 | id=A76 | pages=28 | date=July 2018

| arxiv=1801.09698 | bibcode=2018A&A...615A..76S

| doi=10.1051/0004-6361/201731533 | s2cid=119107228 }}

{{cite journal

| last1=Bonfanti | first1=A. | last2=Ortolani | first2=S.

| last3=Piotto | first3=G. | last4=Nascimbeni | first4=V.

| title=Revising the ages of planet-hosting stars

| journal=Astronomy and Astrophysics

| volume=575 | pages=A18 | year=2015

| bibcode=2015A&A...575A..18B | arxiv=1411.4302

| doi=10.1051/0004-6361/201424951 | s2cid=54555839 }}

{{cite journal

| url=http://www.aanda.org/articles/aa/full/2004/07/aa0250/aa0250.html

| title=The CORALIE survey for southern extra-solar planets XII. Orbital solutions for 16 extra-solar planets discovered with CORALIE

| last1=Mayor | first1=M. | last2=Udry | first2=S.

| last3=Naef | first3=D. | last4=Pepe | first4=F.

| last5=Queloz | first5=D. | last6=Santos | first6=N. C.

| last7=Burnet | first7=M. | display-authors=1

| journal=Astronomy and Astrophysics

| volume=415 | issue=1 | pages=391–402 | year=2004

| arxiv=astro-ph/0310316 | bibcode=2004A&A...415..391M

| doi=10.1051/0004-6361:20034250 | s2cid=5233877

}}

{{cite journal | arxiv = 2206.05595| last1 = Gaia Collaboration| last2 = Arenou| first2 = F.| last3 = Babusiaux| first3 = C.| last4 = Barstow| first4 = M. A.| last5 = Faigler| first5 = S.| last6 = Jorissen| first6 = A.| last7 = Kervella| first7 = P.| last8 = Mazeh| first8 = T.| last9 = Mowlavi| first9 = N.| last10 = Panuzzo| first10 = P.| last11 = Sahlmann| first11 = J.| last12 = Shahaf| first12 = S.| last13 = Sozzetti| first13 = A.| last14 = Bauchet| first14 = N.| last15 = Damerdji| first15 = Y.| last16 = Gavras| first16 = P.| last17 = Giacobbe| first17 = P.| last18 = Gosset| first18 = E.| last19 = Halbwachs| first19 = J. -L.| last20 = Holl| first20 = B.| last21 = Lattanzi| first21 = M. G.| last22 = Leclerc| first22 = N.| last23 = Morel| first23 = T.| last24 = Pourbaix| first24 = D.| last25 = Re Fiorentin| first25 = P.| last26 = Sadowski| first26 = G.| last27 = Ségransan| first27 = D.| last28 = Siopis| first28 = C.| last29 = Teyssier| first29 = D.| last30 = Zwitter| first30 = T.| title = Gaia Data Release 3| journal = Astronomy & Astrophysics| year = 2023| volume = 674| pages = A34| doi = 10.1051/0004-6361/202243782| s2cid = 249626026| display-authors = 1}}

{{cite journal |last1=Feng |first1=Fabo |last2=Butler |first2=R. Paul |display-authors=etal |date=August 2022 |title=3D Selection of 167 Substellar Companions to Nearby Stars |journal=The Astrophysical Journal Supplement Series |volume=262 |issue=21 |page=21 |doi=10.3847/1538-4365/ac7e57 |arxiv=2208.12720 |bibcode=2022ApJS..262...21F|s2cid=251864022 |doi-access=free }}

}}

{{Sky|12|48|51.7543|-|68|25|30.544|95}}

{{Stars of Musca}}

{{DEFAULTSORT:HD 111232}}

Category:G-type main-sequence stars

Category:Planetary systems with one confirmed planet

Category:Musca

Category:Durchmusterung objects

111232

062534

J12485177-6825304