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Coordinates: Sky map 00h 29m 59.87s, −05° 45′ 50.41″
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{{Short description|Hot-Jupiter exoplanet orbiting the star HD 2638}}
{{Planetbox begin
{{Infobox planet
| name = HD 2638 b
| name = HD 2638 b
<!-- DISCOVERY -->
⚫
| discoverer = [[C. Moutou|Moutou]], [[Michel Mayor|Mayor]],<br />[[F. Bouchy|Bouchy]] et al.
⚫
| discovery_site = [[Geneva Extrasolar Planet Search|Geneva]]
| discovered = 2005
⚫
| discovery_method = [[Radial velocity]]
<!-- DESIGNATIONS -->
<!-- ORBITAL -->
| apsis = astron
| semimajor = {{convert|0.044|AU|km|abbr=on}}
⚫
| eccentricity = 0
⚫
| period = 3.4442 ± 0.0002 [[day|d]]
⚫
| time_periastron = 2,453,323.206<br />± 0.002
⚫
| arg_peri = 0
⚫
| semi-amplitude = 67.4 ± 0.4
⚫
| star = [[HD 2638]]
<!-- PHYS CHARS -->
| mass = >0.48 {{Jupiter mass|link=y}}
<!-- ATMOSPHERE -->
<!-- NOTES -->
}}
}}
⚫
'''HD 2638 b''' is a planet of the star [[HD 2638]]. It is a typical "[[hot Jupiter]]", a planet that orbits its parent star in a very tight "torch orbit". The distance to the star is less than 1/20 [[Earth]]'s distance from the Sun. One orbital revolution lasts only about three and half [[day]]s.<ref name="Moutou2005"/>
{{Planetbox star
⚫
| star = [[HD 2638]]
| constell = [[Cetus]]
| ra = {{RA|00|29|59.873}}<ref name="van Leeuwen2007"/>
| dec = {{DEC|–05|45|50.40}}<ref name="van Leeuwen2007"/>
| dist_ly = 160 ± 10<ref name="van Leeuwen2007"/>
| dist_pc = 50 ± 4<ref name="van Leeuwen2007"/>
| class = G5V
}}
{{Planetbox orbit
| semimajor = 0.044
⚫
| eccentricity = 0
⚫
| period = 3.4442 ± 0.0002
| ang_dist = 0.819
⚫
| arg_peri = 0
⚫
| t_peri = 2,453,323.206<br />± 0.002
⚫
| semi-amp = 67.4 ± 0.4
}}
{{Planetbox character
| mass = >0.48
}}
{{Planetbox discovery
| discovery_date = 2005
⚫
| discovery_method = [[Radial velocity]]
⚫
| discovery_site = [[Geneva Extrasolar Planet Search|Geneva]]
⚫
| discoverers = [[C. Moutou|Moutou]], [[Michel Mayor|Mayor]],<br />[[F. Bouchy|Bouchy]] et al.
| discovery_status = Published
}}
{{Planetbox end}}


⚫
==References==
⚫
'''HD 2638 b''' is a planet of the star [[HD 2638]]. It is a typical "[[hot Jupiter]]", a planet that orbits its parent star in a very tight "torch orbit". Distance to the star is less than 1/20th [[Earth|Earth's]] distance from the Sun. One orbital revolution lasts only about three and half [[day]]s.<ref name="Moutou2005"/>
⚫
{{reflist|refs=


⚫
<ref name="Moutou2005">{{cite journal | title=The HARPS search for southern extra-solar planets IV. Three close-in planets around HD 2638, HD 27894 and HD 63454 | url=http://www.aanda.org/articles/aa/full/2005/31/aa2826-05/aa2826-05.html | last1=Moutou | first1=C. | last2=Mayor | first2=M. | last3=Bouchy | first3=F. | last4=Lovis | first4=C. | last5=Pepe | first5=F. | last6=Queloz | first6=D. | last7=Santos | first7=N. C. | last8=Udry | first8=S. | last9=Benz | first9=W. | display-authors=1 | journal=Astronomy and Astrophysics | volume=439 | issue=1 | pages=367–373 | year=2015 | bibcode=2005A&A...439..367M | doi=10.1051/0004-6361:20052826 | arxiv=1411.7048 }}</ref>
⚫
== References ==
⚫
{{reflist|30em|refs=

⚫
<ref name="Moutou2005">{{cite journal | title=The HARPS search for southern extra-solar planets IV. Three close-in planets around HD 2638, HD 27894 and HD 63454| url=http://www.aanda.org/articles/aa/full/2005/31/aa2826-05/aa2826-05.html | last1=Moutou | first1=C. | last2=Mayor | first2=M. | last3=Bouchy | first3=F. | last4=Lovis | first4=C. | last5=Pepe | first5=F. | last6=Queloz | first6=D. | last7=Santos | first7=N. C. | last8=Udry | first8=S. | last9=Benz | first9=W. | display-authors=1 | journal=Astronomy and Astrophysics | volume=439 | issue=1 | pages=367–373 | year=2005 | bibcode=2005A&A...439..367M | doi=10.1051/0004-6361:20052826 }}</ref>

<ref name="van Leeuwen2007">{{cite journal | title=Validation of the new Hipparcos reduction | url=http://www.aanda.org/index.php?option=com_article&access=bibcode&Itemid=129&bibcode=2007A%2526A...474..653VFUL | last1=van Leeuwen | first1=F. | journal=Astronomy and Astrophysics | volume=474 | issue=2 | pages=653–664 | year=2007 | arxiv=0708.1752 | bibcode=2007A&A...474..653V | doi=10.1051/0004-6361:20078357 }} [http://webviz.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=I/311/hip2&recno=2344 Vizier catalog entry ]</ref>


}}
}}


== External links ==
==External links==
* [http://simbad.u-strasbg.fr/Simbad SIMBAD] [http://simbad.u-strasbg.fr/sim-id.pl?protocol=html&Ident=HD+2638 entry]
* [http://simbad.u-strasbg.fr/Simbad SIMBAD] [http://simbad.u-strasbg.fr/sim-id.pl?protocol=html&Ident=HD+2638 entry]
* [http://exoplanet.eu/ The Extrasolar Planets Encyclopaedia] [http://exoplanet.eu/star.php?st=HD+2638 entry]
* [https://exoplanet.eu/home/ The Extrasolar Planets Encyclopaedia] [https://web.archive.org/web/20071106055751/http://exoplanet.eu/star.php?st=HD+2638 entry]

* [http://www.extrasolar.net Extrasolar Visions] [http://www.extrasolar.net/planettour.asp?StarCatId=normal&PlanetId=283 entry]
{{Sky|00|29|59.87|-|05|45|50.41|175.18}}
{{Sky|00|29|59.87|-|05|45|50.41|175.18}}


{{DEFAULTSORT:HD 2638 b}}
⚫
[[Category:Extrasolar planets]]
[[Category:Cetus (constellation)]]
[[Category:Cetus]]
[[Category:Exoplanets discovered in 2005]]
[[Category:Exoplanets discovered in 2005]]
[[Category:Gas giants]]
[[Category:Giant planets]]
⚫
[[Category:Hot Jupiters]]
[[Category:Exoplanets detected by radial velocity]]
[[Category:Exoplanets detected by radial velocity]]


Latest revision as of 19:29, 22 December 2023

HD 2638 b
Discovery
Discovered byMoutou, Mayor,
Bouchy et al.
Discovery siteGeneva
Discovery date2005
Radial velocity
Orbital characteristics
0.044 AU (6,600,000 km)
Eccentricity0
3.4442 ± 0.0002 d
2,453,323.206
± 0.002
0
Semi-amplitude67.4 ± 0.4
StarHD 2638
Physical characteristics
Mass>0.48 MJ

HD 2638 b is a planet of the star HD 2638. It is a typical "hot Jupiter", a planet that orbits its parent star in a very tight "torch orbit". The distance to the star is less than 1/20 Earth's distance from the Sun. One orbital revolution lasts only about three and half days.[1]

References

[edit]
  1. ^ Moutou, C.; et al. (2015). "The HARPS search for southern extra-solar planets IV. Three close-in planets around HD 2638, HD 27894 and HD 63454". Astronomy and Astrophysics. 439 (1): 367–373. arXiv:1411.7048. Bibcode:2005A&A...439..367M. doi:10.1051/0004-6361:20052826.
[edit]



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