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CFHTWIR-Oph 98 b

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CFHTWIR-Oph 98 B
Hubble image of Oph 98 AB
Discovery
Discovered byFontanive et al.
Discovery date2020
Direct imaging
Orbital characteristics
200±6 AU (mean separation)
StarCFHTWIR-Oph 98 A
Physical characteristics[a]
1.86±0.05 RJ
Mass7.8+0.7
−0.8
MJ
Temperature1800±40 K
Spectral type
L2-L6

CFHTWIR-Oph 98 B is a substellar object, either an exoplanet or a sub-brown dwarf that orbits CFHTWIR-Oph 98 A, a M-type brown dwarf.[1] The pair form a binary system.[2]

Formation

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It orbits a star but its formation as an exoplanet is challenging or impossible.[2] If its formation scenario is known, it may explain the formation of Planet Nine. Planetary migration may explain its formation, or it may be a brown dwarf.

See also

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Notes

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  1. ^ for age of 3 Myr

References

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  1. ^ "The Extrasolar Planet Encyclopaedia — CFHTWIR-Oph 98 b". Extrasolar Planets Encyclopaedia. Retrieved 11 September 2023.
  2. ^ a b Fontanive, Clémence; Allers, Katelyn N.; Pantoja, Blake; Biller, Beth; Dubber, Sophie; Zhang, Zhoujian; Dupuy, Trent; Liu, Michael C.; Albert, Loïc (2020-12-01). "A Wide Planetary-mass Companion to a Young Low-mass Brown Dwarf in Ophiuchus". The Astrophysical Journal. 905 (2): L14. arXiv:2011.08871. Bibcode:2020ApJ...905L..14F. doi:10.3847/2041-8213/abcaf8. ISSN 0004-637X.