HD 106252

{{Starbox observe

| epoch = J2000

| constell = Virgo

| ra = {{RA|12|13|29.510}}

| dec = {{DEC|+10|02|29.88}}

| appmag_v = 7.41

}}

{{Starbox character

| type =

| class = G0V

| b-v = 0.635{{±|0.007}}

| u-b =

| variable =

}}

{{Starbox astrometry

| radial_v = 15.44{{±|0.11}}

| prop_mo_ra = 22.863

| prop_mo_dec = −280.009

| pm_footnote =

| parallax = 15.533

| p_error = 0.0048

| parallax_footnote =

| absmag_v = 4.53

}}

{{Starbox detail

| source =

| mass = 1.05{{±|0.02}}

| radius = 1.096

| luminosity = 1.328{{±|0.030}}

| gravity = 4.40{{±|0.15}}

| temperature = 5,890{{±|50}}

| metal_fe = −0.06{{±|0.04}}

| rotation = 22.8 d

| rotational_velocity = 1.74{{±|0.25}}

| age_gyr = {{val|3.00|0.8|0.6}}

}}

{{Starbox catalog

| names = {{odlist | HD=106252 | BD=+10°2392 | HIP=59610 | LTT=13402 | NLTT=30020 | SAO=99998 }}

}}

{{Starbox reference

| Simbad = HD+106252

| NSTED = HD+106252

}}

HD 106252 is a star with a brown dwarf companion in the constellation Virgo. An apparent visual magnitude of 7.41 means this star is too faint to be visible to the naked eye. It is located at a distance of 210 light years from the Sun based on parallax measurements, and is receding with a radial velocity of 15 km/s.

The stellar classification of HD 106252 is G0V, matching an ordinary G-type main-sequence star. It has 5% more mass than the Sun and 10% greater in girth. This star is about three billion years old with a low level of magnetic activity and is spinning with a projected rotational velocity of 2 km/s. It is radiating 1.3 times the luminosity of the Sun from its photosphere at an effective temperature of 5,890 K.

In 2001, a massive sub-stellar companion was announced orbiting the star by the European Southern Observatory. The discovery was confirmed by a different team using the Lick Telescope. Astrometric observations from Hipparcos in 2011 suggested that its true mass is likely around {{Jupiter mass|30.6|link=y}}, in the brown dwarf range. More accurate astrometry from Gaia in 2021 revealed a smaller true mass of {{Jupiter mass|10.0|link=y}}.

{{OrbitboxPlanet begin

| table_ref =

| period_unit = year

}}

{{OrbitboxPlanet

| exoplanet = b

| mass = {{val|10.00|0.78|0.73}}

| period = {{val|4.202|0.011|0.010}}

| semimajor = {{val|2.655|0.017}}

| eccentricity = {{val|0.480|0.010}}

| inclination = {{val|46.0|4.9|4.1}}

}}

References

{{Reflist|refs=

{{cite journal

| title=Radial Velocities for 889 Late-Type Stars

| last1=Nidever | first1=David L. | last2=Marcy | first2=Geoffrey W.

| last3=Butler | first3=R. Paul | last4=Fischer | first4=Debra A.

| last5=Vogt | first5=Steven S. | last6=McGahee | first6=C. E.

| last7=O'Donoghue | first7=A. A. | last8=Knox | first8=E. R.

| journal=The Astrophysical Journal Supplement Series

| volume=141 | issue=2 | pages=503–522 | year=2002

| arxiv=astro-ph/0112477 | doi=10.1086/340570

| bibcode=2002ApJS..141..503N | s2cid=51814894 }}

{{cite journal

| 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 }}

{{cite journal

| title=Mass constraints on substellar companion candidates from the re-reduced Hipparcos intermediate astrometric data: nine confirmed planets and two confirmed brown dwarfs

| last1=Reffert | first1=S. | last2=Quirrenbach | first2=A.

| journal=Astronomy & Astrophysics

| volume=527 | id=A140 | pages=22

| date=March 2011 | doi=10.1051/0004-6361/201015861

| arxiv=1101.2227 | bibcode=2011A&A...527A.140R | s2cid=54986291 }}

{{cite journal

| title=Precise Masses and Orbits for Nine Radial-velocity Exoplanets

| display-authors=1 | last1=Li | first1=Yiting

| last2=Brandt | first2=Timothy D. | last3=Brandt | first3=G. Mirek

| last4=Dupuy | first4=Trent J. | last5=Michalik | first5=Daniel

| last6=Jensen-Clem | first6=Rebecca | last7=Zeng | first7=Yunlin

| last8=Faherty | first8=Jacqueline | last9=Mitra | first9=Elena L.

| journal=The Astronomical Journal

| volume=162 | issue=6 | page=266 | year=2021

| arxiv=2109.10422 | bibcode=2021AJ....162..266L

| doi=10.3847/1538-3881/ac27ab | s2cid=237592581 | doi-access=free }}

{{cite press release

| title=Exoplanets: The Hunt Continues!

| publisher=European Southern Observatory

| date=April 4, 2001 | location=Garching, Germany

| url=http://www.eso.org/public/news/eso0114/

| access-date=December 27, 2012 }}

{{cite journal

| title=Planetary Companions to HD 136118, HD 50554, and HD 106252

| last1=Fischer | first1=Debra A. | last2=Marcy | first2=Geoffrey W.

| last3=Butler | first3=R. Paul | last4=Vogt | first4=Steven S.

| last5=Walp | first5=Bernie | last6=Apps | first6=Kevin

| display-authors=1 | journal=Publications of the Astronomical Society of the Pacific

| volume=114 | issue=795 | pages=529–535 | year=2002

| bibcode=2002PASP..114..529F | doi=10.1086/341677 | doi-access=free }}

{{cite journal

| title=The ELODIE survey for northern extra-solar planets. I. Six new extra-solar planet candidates

| last1=Perrier | first1=C. | last2=Sivan | first2=J.-P.

| last3=Naef | first3=D. | last4=Beuzit | first4=J. L.

| last5=Mayor | first5=M. | last6=Queloz | first6=D.

| last7=Udry | first7=S. | display-authors=1

| journal=Astronomy and Astrophysics

| volume=410 | issue=3 | pages=1039–1049 | year=2003

| arxiv=astro-ph/0308281 | bibcode=2003A&A...410.1039P

| doi=10.1051/0004-6361:20031340 | s2cid=6946291 }}

}}

External links

Category:G-type main-sequence stars

Category:Planetary systems with one confirmed planet

Category:Virgo (constellation)

Category:Durchmusterung objects

106252

059610