Astronomy:TOI-677 b

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TOI-677 b
Discovery
Discovery siteTransiting Exoplanet Survey Satellite[1]
Discovery date2019[1]
Transit method[1]
Orbital characteristics
0.1038 AU (15,530,000 km)
Orbital period11.24 d[1]
Inclination87.63
StarTOI-677
Physical characteristics
Mean radius1.170 |♃|J}}}}}}[1]
Mass1.236 |♃|J}}}}}}
Physics1,252 K (979 °C; 1,794 °F)[1]


TOI-677 b (TOI-677b) is a warm super-Jupiter type exoplanet orbiting the F-type main sequence star TOI-677 in the constellation of Ophiuchus[2] about 466 ly (143 pc) away from Earth.[3][4][5] The mass of the planet has been found to be 1.252 Jupiter masses and the radius of the planet is 1.179 Jupiter radii. It has a temperature of 1,252 K (979 °C; 1,794 °F). It orbits the star once every 11.24 days in an eccentric orbit (e=0.435).[1] The eccentricity of TOI-677b is possibly due to interactions between the protoplanetary disk and the planet itself. If the claims of an outer brown dwarf object in the TOI-677 system are true, then the brown dwarf may have had a role in the planets high eccentricity.[6]

It is part of a emerging class of exoplanets called tidally detached gas giants that exhibits high eccentricities but low stellar obliquity. It is also part of a class of planetary systems with eccentric super-Jupiters orbiting stars hotter than 6100 Kelvin.[6]

Discovery

The planet was discovered by NASA's Transiting Exoplanet Survey Satellite (TESS) using the transit method, in which the dimming effect that a planet causes as it crosses in front of its star is measured. Discovery of the exoplanet was announced on 13 November 2019.[1][3][4][5]

See also

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 Jordán, Andrés (2020). "TOI-677 b: A Warm Jupiter (P=11.2d) on an eccentric orbit transiting a late F-type star". The Astronomical Journal 159 (4): 145. doi:10.3847/1538-3881/ab6f67. Bibcode: 2020AJ....159..145J. 
  2. ↑ Staff (2 August 2008). "Finding the constellation which contains given sky coordinates". DJM.cc. http://djm.cc/constellation.html. Retrieved 26 November 2019. 
  3. ↑ 3.0 3.1 Nowakowski, Tomasz (21 November 2019). "New 'warm Jupiter' exoplanet discovered". Phys.org. https://phys.org/news/2019-11-jupiter-exoplanet.html. Retrieved 26 November 2019. 
  4. ↑ 4.0 4.1 Wehner, Mike (21 November 2019). "Astronomers spot steamy new exoplanet". Boy Genius Report. https://bgr.com/2019/11/21/space-news-new-exoplanet-warm-jupiter/. Retrieved 26 November 2019. 
  5. ↑ 5.0 5.1 Gullett, Melanie J. (25 November 2019). "New "Warm Jupiter" Exoplanet Has Been Discovered". UpLoadComet.com. https://uploadcomet.com/new-warm-jupiter-exoplanet-has-been-discovered/4367/. Retrieved 26 November 2019. 
  6. ↑ 6.0 6.1 Hu, Qingru; Rice, Malena; Wang, Xian-Yu; Wang, Songhu; Shporer, Avi; Teske, Johanna K.; Yee, Samuel W.; Butler, R. Paul et al. (March 2024). "The PFS View of TOI-677 b: A Spin–Orbit Aligned Warm Jupiter in a Dynamically Hot System*" (in en). The Astronomical Journal 167 (4): 175. doi:10.3847/1538-3881/ad2855. ISSN 1538-3881. Bibcode: 2024AJ....167..175H. 

Coordinates: Sky map 16h 32m 18.0s, −22° 21′ 30″



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