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HD 142415: Difference between revisions

Coordinates: Sky map 15h 57m 40.7907s, −60° 12′ 00.926″
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{{Short description|Star in the constellation Norma}}
{{Starbox short

| name = [[Henry Draper catalogue|HD]] 142415
{{Starbox begin}}
| epoch = [[J2000.0]]
{{Starbox observe
| constell = [[Norma (constellation)|Norma]]
| epoch = J2000
| ra = 15h 57m 40.7907s
| constell = [[Norma (constellation)|Norma]]
| dec = −60º 12' 00.9256″
| ra = {{RA|15|57|40.79190}}<ref name=GaiaDR2/>
| spectral = G1V
| dec = {{DEC|−60|12|00.9228}}<ref name=GaiaDR2/>
| appmag_v = 7.34
| appmag_v = 7.33<ref name=Anderson2012/>
| absmag_v = 4.64
}}
| dist_ly = 113
{{Starbox character
| dist_pc = 34.6
| type =
| names = [[Hipparcos catalogue|HIP]] 78169, [[Smithsonian Astrophysical Observatory catalogue|SAO]] 253358
| class = G1V<ref name=Torres2006/>
| b-v = {{Val|0.621|0.002}}<ref name=Anderson2012/>
| u-b =
| variable =
}}
{{Starbox astrometry
| radial_v = {{val|−11.60|0.72}}<ref name=Anderson2012/>
| prop_mo_ra = {{val|−112.801|0.050}}<ref name=GaiaDR2/>
| prop_mo_dec = {{val|−101.835|0.051}}<ref name=GaiaDR2/>
| parallax = 28.1149
| p_error = 0.0328
| parallax_footnote = <ref name=GaiaDR2/>
| absmag_v = 4.66<ref name=Anderson2012/>
}}
{{Starbox detail
| source = <ref name=Bonfanti2016/>
| mass = {{Val|1.10|0.01}}
| radius = {{Val|1.04|0.01}}
| luminosity = {{Val|1.16|0.02}}
| gravity = {{Val|4.52|0.05}}<ref name=Sousa2018/>
| temperature = {{Val|5869|12|fmt=commas}}
| metal_fe = {{Val|0.17|0.02}}<ref name=Sousa2018/>
| rotational_velocity = {{Val|4.2|0.1}}<ref name=Torres2006/>
| age_gyr = {{Val|1.6|0.6}}
| rotation = {{val|9.6|ul=d}}<ref name="Mayor2004"/>
}}
{{Starbox catalog
| names = {{odlist | CPD=−59° 6464 | GC=21393 | HD=142415 | HIP=78169 | SAO=253358 }}<ref name=SIMBAD/>
}}
{{Starbox reference
| Simbad = HD+142415
| EPE = HD+142415
}}
}}
{{End}}
'''HD 142415''' is a 7th [[apparent magnitude|magnitude]] [[yellow dwarf|yellow]] [[main-sequence]] [[star]] 113 [[light year]]s from [[Earth]] in the [[southern hemisphere|southern]] [[constellation]] [[Norma (constellation)|Norma]]. This star dwarfs the [[Sun]] in terms of [[mass]] (1.09x), [[size]] (1.03x), [[luminosity]] (1.1x), [[temperature]] (1.01x), and [[metallicity]] (1.62x). The [[stellar evolution|age of the star]] is as young as 1.5 billion years.


'''HD 142415''' is a single<ref name="Mayor2004"/> [[star]] in the southern [[constellation]] of [[Norma (constellation)|Norma]], positioned next to the southern constellation border with [[Triangulum Australe]] and less than a degree to the west of [[NGC 6025]]. With an [[apparent visual magnitude]] of 7.33,<ref name=Anderson2012/> it is too faint to be visible to the naked eye. The distance to this star is 116&nbsp;[[light year]]s from the [[Sun]] based on [[stellar parallax|parallax]], but it is drifting closer with a [[radial velocity]] of −12&nbsp;km/s.<ref name=Anderson2012/> It is a candidate member of the [[NGC 1901]] [[open cluster]] of stars.<ref name=Murgas2013/>
The star currently has one [[planet]].

<div style="clear: both"></div>
This is an ordinary [[G-type main-sequence star]] with a [[stellar classification]] of G1V.<ref name=Torres2006/> It has been identified as a [[solar twin]] by Datson et al. (2012), which means its physical properties are very similar to the Sun.<ref name=Datson2012/> It has 10% more mass than the Sun but only a 3% larger radius. The star is estimated to be 1.6<ref name=Bonfanti2016/>&nbsp;billion years old and is spinning with a [[projected rotational velocity]] of 4.2&nbsp;km/s.<ref name=Torres2006/> It is radiating 1.16 times the [[luminosity of the Sun]] from its [[photosphere]] at an [[effective temperature]] of 5,869&nbsp;K.<ref name=Bonfanti2016/>
==HD 142415 b==

{{Planetbox begin
The star is currently known to have one [[planet]], designated [[HD 142415 b]]. This was detected via the [[radial velocity method]] and announced in 2004. The orbital period is just over a year, which made a determination of the [[orbital eccentricity]] more difficult due to undersampling over part of the orbit, in combination with jitter. The authors chose to pin the eccentricity value to 0.5, although solutions in the range 0.2–0.8 would be equally plausible.<ref name="Mayor2004"/>
| name = HD 142415 b

}}
{{OrbitboxPlanet begin
{{Planetbox orbit
| table_ref = <ref name="Mayor2004"/>
| semimajor = 1.07
| eccentricity = 0.5
| period = 386.3&plusmn;1.6
| ang_dist = 30.9
| long_peri = 255&plusmn;4
| t_peri = 2,451,519&plusmn;4
| semi-amp = 51.3&plusmn;2.3
}}
}}
{{OrbitboxPlanet
{{Planetbox character
| exoplanet = [[HD 142415 b|b]]
| mass = &gt;1.69
| mass = >1.62
}}
| period = 386.3 ± 1.6
{{Planetbox discovery
| semimajor = 1.05
| discovery_date = [[2003]]
| eccentricity = 0.5(fixed)
| discoverers = [[Michel Mayor|Mayor]] et al.
}}
| discovery_method = [[doppler spectroscopy]]
{{Orbitbox end}}
| discovery_site = [[California]], [[United States]]
| discovery_status=Published
}}
{{Planetbox end}}
'''HD 142415 b''' is an [[exoplanet]] with the semi-[[amplitude]] of 51.3&plusmn;2.3 [[meter per second|m/s]]. This indicates the [[minimum mass]] of 1.69 [[Jupiter mass]], an [[orbital period]] of 386.3 [[day]]s, and the [[semi-major axis]] of 1.07 [[astronomical unit]]s based from its stellar mass. The wild, oval pathed [[stellar wobble|wobble of the star]] used by [[Doppler spectrometer]] indicates that the orbit of the planet is highly eccentric at around 50%.


== See also ==
The planet was discovered in [[California]] of the [[United States]] in [[2003]] by [[Michel Mayor|Mayor]], who discovered [[51 Pegasi b]] orbiting around [[51 Pegasi]] back in [[1995]].
* [[HD 141937]]
<div style="clear: both"></div>
* [[HD 142022]]
* [[List of extrasolar planets]]


==References==
==References==
{{Reflist|refs=
* {{cite journal |url=http://adsabs.harvard.edu/abs/2004A%26A...415..391M |author=Mayor et al. |title=The CORALIE survey for southern extra-solar planets. XII. Orbital solutions for 16 extra-solar planets discovered with CORALIE |journal=Astron. & Astrophys. |year=2004 |volume=415 |pages=391–402 |accessdate=December 12 |accessyear=2007 |doi=10.1051/0004-6361:20034250}}


<ref name=GaiaDR2>{{Cite Gaia DR2|5833117718964892928}}</ref>
==External links==
* {{cite web |url=http://simbad.u-strasbg.fr/simbad/sim-id?protocol=html&Ident=HD+142415&NbIdent=1&Radius=2&Radius.unit=arcmin&submit=submit+id |title=HD 142415 -- Star |work=SIMBAD Astronomical Database |accessdate=December 12 |accessyear=2007}}
* {{cite web |url=http://simbad.u-strasbg.fr/simbad/sim-id?Ident=HD%20142415b |title=HD 142415b -- Extra-solar Planet Candidate |work=SIMBAD Astronomical Database |accessdate=December 12 |accessyear=2007}}
* {{cite web |url=http://exoplanet.eu/star.php?st=HD+142415 |title=Notes for star HD 142415 |work=The Extrasolar Planets Encyclopaedia |accessdate=December 12 |accessyear=2007}}
* {{cite web |url=http://exoplanet.eu/planet.php?p1=HD+142415&p2=b |title=Notes for planet HD 142415 b |work=The Extrasolar Planets Encyclopaedia |accessdate=December 12 |accessyear=2007}}
* {{cite web |url=http://www.extrasolar.net/startour.asp?StarCatID=normal&StarID=208 |title=HD 142415 -- Yellow Main Sequence |work=Extrasolar Visions |accessdate=December 12 |accessyear=2007}}
* {{cite web |url=http://www.extrasolar.net/planettour.asp?StarCatId=normal&PlanetId=249 |title=HD 142415 B -- Water Cloud Jovian, Eccentric |work=Extrasolar Visions |accessdate=December 12 |accessyear=2007}}
* {{cite web |url=http://www.exoplanets.org/stars.shtml |title=Star Table |work=Catalog of Nearby Exoplanets |accessdate=December 12 |accessyear=2007}}
*{{cite web |url=http://www.exoplanets.org/planets.shtml |title=Planet Table |work=Catalog of Nearby Exoplanet |accessdate=December 12 |accessyear=2007}}


<ref name=SIMBAD>{{cite simbad | title=HD 142415 | access-date=2018-07-23}}</ref>
{{main-star-stub}}


<ref name=Datson2012>{{cite journal
[[Category:G-type main sequence stars]]
| title=New solar twins and the metallicity and temperature scales of the Geneva-Copenhagen Survey
[[Category:Extrasolar planets]]
| display-authors=1 | last1=Datson | first1=Juliet
[[Category:Norma constellation]]
| last2=Flynn | first2=Chris | last3=Portinari | first3=Laura
[[Category:HD and HDE objects|142415]]
| journal=Monthly Notices of the Royal Astronomical Society
[[Category:HIP objects|78169]]
| volume=426 | issue=1 | pages=484–495 | date=October 2012
| doi=10.1111/j.1365-2966.2012.21730.x | doi-access=free | arxiv=1207.4610
| bibcode=2012MNRAS.426..484D | s2cid=118378819 }}</ref>

<ref name=Murgas2013>{{citation
| display-authors=1 | last1=Murgas | first1=F.
| last2=Jenkins | first2=J. S. | last3=Rojo | first3=P.
| last4=Jones | first4=H. R. A. | last5=Pinfield | first5=D. J.
| title=Stellar activity as a tracer of moving groups
| journal=Astronomy and Astrophysics
| volume=552 | page=A27 | date=April 2013
| bibcode=2013A&A...552A..27M | arxiv=1302.6935
| doi=10.1051/0004-6361/201219483 | s2cid=7621053 }}</ref>

<ref name=Bonfanti2016>{{cite journal
| title=Age consistency between exoplanet hosts and field stars
| display-authors=1 | last1=Bonfanti | first1=A.
| last2=Ortolani | first2=S. | last3=Nascimbeni | first3=V.
| journal=Astronomy & Astrophysics
| year=2016 | volume=585 | pages=A5, 14 pp
| arxiv=1511.01744 | bibcode=2016A&A...585A...5B
| doi=10.1051/0004-6361/201527297 | s2cid=53971692 }}</ref>

<ref name=Anderson2012>{{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 }}</ref>

<ref name=Torres2006>{{cite journal
| last1=Torres | first1=G. R. | last2=Quast | first2=G. R.
| last3=da Silva | first3=L. | last4=de La Reza | first4=R.
| last5=Melo | first5=C. H. F. | last6=Sterzik | first6=M.
| title=Search for associations containing young stars (SACY). I. Sample and searching method
| journal=Astronomy and Astrophysics
| volume=460 | issue=3 | pages=695–708 | date=December 2006
| doi=10.1051/0004-6361:20065602 | bibcode=2006A&A...460..695T
| arxiv=astro-ph/0609258 | s2cid=16080025 }}</ref>

<ref name="Mayor2004">{{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
}}</ref>

<ref name=Sousa2018>{{cite journal
| title=SWEET-Cat updated. New homogenous spectroscopic parameters
| display-authors=1 | last1=Sousa | first1=S. G.
| last2=Adibekyan | first2=V. | last3=Delgado-Mena | first3=E.
| last4=Santos | first4=N. C. | last5=Andreasen | first5=D. T.
| last6=Ferreira | first6=A. C. S. | last7=Tsantaki | first7=M.
| last8=Barros | first8=S. C. C. | last9=Demangeon | first9=O.
| last10=Israelian | first10=G. | last11=Faria | first11=J. P.
| last12=Figueira | first12=P. | last13=Mortier | first13=A.
| last14=Brandão | first14=I. | last15=Montalto | first15=M.
| last16=Rojas-Ayala | first16=B. | last17=Santerne | first17=A.
| journal=Astronomy & Astrophysics
| volume=620 | id=A58 | pages=13 | date=November 2018
| doi=10.1051/0004-6361/201833350 | arxiv=1810.08108
| bibcode=2018A&A...620A..58S | s2cid=119374557 }}</ref>

}}


{{Sky|15|57|40.7907|-|60|12|00.926|113}}
{{Stars of Norma}}


[[de:HD 142415 b]]
{{DEFAULTSORT:HD 142415}}
[[Category:G-type main-sequence stars]]
[[sk:HD 142415]]
[[Category:Planetary systems with one confirmed planet]]
[[Category:Norma (constellation)]]
[[Category:Durchmusterung objects]]
[[Category:Henry Draper Catalogue objects|142415]]
[[Category:Hipparcos objects|078169]]

Latest revision as of 02:27, 23 August 2024

HD 142415
Observation data
Epoch J2000      Equinox J2000
Constellation Norma
Right ascension 15h 57m 40.79190s[1]
Declination −60° 12′ 00.9228″[1]
Apparent magnitude (V) 7.33[2]
Characteristics
Spectral type G1V[3]
B−V color index 0.621±0.002[2]
Astrometry
Radial velocity (Rv)−11.60±0.72[2] km/s
Proper motion (μ) RA: −112.801±0.050[1] mas/yr
Dec.: −101.835±0.051[1] mas/yr
Parallax (π)28.1149 ± 0.0328 mas[1]
Distance116.0 ± 0.1 ly
(35.57 ± 0.04 pc)
Absolute magnitude (MV)4.66[2]
Details[4]
Mass1.10±0.01 M☉
Radius1.04±0.01 R☉
Luminosity1.16±0.02 L☉
Surface gravity (log g)4.52±0.05[5] cgs
Temperature5,869±12 K
Metallicity [Fe/H]0.17±0.02[5] dex
Rotation9.6 d[6]
Rotational velocity (v sin i)4.2±0.1[3] km/s
Age1.6±0.6 Gyr
Other designations
CPD−59° 6464, GC 21393, HD 142415, HIP 78169, SAO 253358[7]
Database references
SIMBADdata

HD 142415 is a single[6] star in the southern constellation of Norma, positioned next to the southern constellation border with Triangulum Australe and less than a degree to the west of NGC 6025. With an apparent visual magnitude of 7.33,[2] it is too faint to be visible to the naked eye. The distance to this star is 116 light years from the Sun based on parallax, but it is drifting closer with a radial velocity of −12 km/s.[2] It is a candidate member of the NGC 1901 open cluster of stars.[8]

This is an ordinary G-type main-sequence star with a stellar classification of G1V.[3] It has been identified as a solar twin by Datson et al. (2012), which means its physical properties are very similar to the Sun.[9] It has 10% more mass than the Sun but only a 3% larger radius. The star is estimated to be 1.6[4] billion years old and is spinning with a projected rotational velocity of 4.2 km/s.[3] It is radiating 1.16 times the luminosity of the Sun from its photosphere at an effective temperature of 5,869 K.[4]

The star is currently known to have one planet, designated HD 142415 b. This was detected via the radial velocity method and announced in 2004. The orbital period is just over a year, which made a determination of the orbital eccentricity more difficult due to undersampling over part of the orbit, in combination with jitter. The authors chose to pin the eccentricity value to 0.5, although solutions in the range 0.2–0.8 would be equally plausible.[6]

The HD 142415 planetary system[6]
Companion
(in order from star) 		Mass Semimajor axis
(AU) 		Orbital period
(days) 		Eccentricity Inclination Radius
b >1.62 MJ 1.05 386.3 ± 1.6 0.5(fixed) — —

See also

[edit]

References

[edit]
  1. ^ a b c d e Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  2. ^ a b c d e f Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. S2CID 119257644.
  3. ^ a b c d Torres, G. R.; Quast, G. R.; da Silva, L.; de La Reza, R.; Melo, C. H. F.; Sterzik, M. (December 2006). "Search for associations containing young stars (SACY). I. Sample and searching method". Astronomy and Astrophysics. 460 (3): 695–708. arXiv:astro-ph/0609258. Bibcode:2006A&A...460..695T. doi:10.1051/0004-6361:20065602. S2CID 16080025.
  4. ^ a b c Bonfanti, A.; et al. (2016). "Age consistency between exoplanet hosts and field stars". Astronomy & Astrophysics. 585: A5, 14 pp. arXiv:1511.01744. Bibcode:2016A&A...585A...5B. doi:10.1051/0004-6361/201527297. S2CID 53971692.
  5. ^ a b Sousa, S. G.; et al. (November 2018). "SWEET-Cat updated. New homogenous spectroscopic parameters". Astronomy & Astrophysics. 620: 13. arXiv:1810.08108. Bibcode:2018A&A...620A..58S. doi:10.1051/0004-6361/201833350. S2CID 119374557. A58.
  6. ^ a b c d Mayor, M.; et al. (2004). "The CORALIE survey for southern extra-solar planets XII. Orbital solutions for 16 extra-solar planets discovered with CORALIE". Astronomy and Astrophysics. 415 (1): 391–402. arXiv:astro-ph/0310316. Bibcode:2004A&A...415..391M. doi:10.1051/0004-6361:20034250. S2CID 5233877.
  7. ^ "HD 142415". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-07-23.
  8. ^ Murgas, F.; et al. (April 2013), "Stellar activity as a tracer of moving groups", Astronomy and Astrophysics, 552: A27, arXiv:1302.6935, Bibcode:2013A&A...552A..27M, doi:10.1051/0004-6361/201219483, S2CID 7621053
  9. ^ Datson, Juliet; et al. (October 2012). "New solar twins and the metallicity and temperature scales of the Geneva-Copenhagen Survey". Monthly Notices of the Royal Astronomical Society. 426 (1): 484–495. arXiv:1207.4610. Bibcode:2012MNRAS.426..484D. doi:10.1111/j.1365-2966.2012.21730.x. S2CID 118378819.


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