Astronomy:BD−17 63 b

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Short description: Extrasolar planet in the constellation Cetus
BD-17°63 b / Finlay
Discovery[1]
Discovered byMoutou et al.
Discovery siteLa Silla Observatory
Discovery dateOctober 26, 2008
Doppler spectroscopy
(HARPS)
Designations
Finlay
Orbital characteristics[2]
1.361±0.021 astronomical unit|AU
Eccentricity0.5455±0.0025
Orbital period655.641+0.070
−0.076 d
Inclination82.4°+2.8°
−2.0°
Longitude of ascending node127.0°+5.1°
−3.6°
astron|astron|helion}}2,457,249.6+0.36
−0.32 JD
112.41°±0.43°
Semi-amplitude173.35+0.76
−0.69 m/s
StarBD−17 63
Physical characteristics[2]
Mass5.325±0.036 Jupiter mass


BD-17°63 b, formally named Finlay, is an exoplanet located approximately 112.5 light-years away in the constellation of Cetus, orbiting the 10th magnitude K-type main sequence star BD−17 63. This planet has a minimum mass of 5.1 MJ and orbits at a distance of 1.34 astronomical units from the star. The distance ranges from 0.62 AU to 2.06 AU, corresponding to the eccentricity of 0.54. One revolution takes about 656 days.[1]

This planet was discovered on October 26, 2008 by Moutou et al. using the HARPS spectrograph on ESO’s 3.6 meter telescope installed at La Silla Observatory in Atacama desert, Chile .

The planet BD-17 63 b is named Finlay. The name was selected in the NameExoWorlds campaign by Cuba, during the 100th anniversary of the IAU. Carlos Juan Finlay (1833–1915) was an epidemiologist recognized as a pioneer in the research of yellow fever.[3][4]

An astrometric measurement of the planet's inclination and true mass was published in 2022 as part of Gaia DR3,[5][6] with another astrometric orbital solution published in 2023.[2]

See also

References

  1. ↑ 1.0 1.1 Moutou, C. et al. (2009). "The HARPS search for southern extra-solar planets XVII. Six long-period giant planets around BD -17 0063, HD 20868, HD 73267, HD 131664, HD 145377, HD 153950". Astronomy and Astrophysics 496 (2): 513–519. doi:10.1051/0004-6361:200810941. Bibcode: 2009A&A...496..513M. http://www.aanda.org/articles/aa/full_html/2009/11/aa10941-08/aa10941-08.html. 
  2. ↑ 2.0 2.1 2.2 Unger, N. et al. (December 2023). "Exploring the brown dwarf desert with precision radial velocities and Gaia DR3 astrometric orbits". Astronomy & Astrophysics 680: A16. doi:10.1051/0004-6361/202347578. Bibcode: 2023A&A...680A..16U. 
  3. ↑ "Approved names" (in en). http://www.nameexoworlds.iau.org/final-results. 
  4. ↑ "International Astronomical Union | IAU". https://www.iau.org/news/pressreleases/detail/iau1912/. 
  5. ↑ Gaia Collaboration et al. (June 2023). "Gaia Data Release 3: Stellar multiplicity, a teaser for the hidden treasure". Astronomy & Astrophysics 674: A34. doi:10.1051/0004-6361/202243782. Bibcode: 2023A&A...674A..34G. 
  6. ↑ Winn, Joshua N. (September 2022). "Joint Constraints on Exoplanetary Orbits from Gaia DR3 and Doppler Data". The Astronomical Journal 164 (5): 196. doi:10.3847/1538-3881/ac9126. Bibcode: 2022AJ....164..196W. 

External links

Coordinates: Sky map 00h 28m 34.3061s, −16° 13′ 34.839″



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