CFHTWIR-Oph 98 b
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]
 Hubble image of Oph 98 AB | |
| Discovery | |
|---|---|
| Discovered by | Fontanive et al. |
| Discovery date | 2020 |
| Direct imaging | |
| Orbital characteristics | |
Semi-major axis | 200±6 AU (mean separation) |
| Star | CFHTWIR-Oph 98 A |
| Physical characteristics[lower-alpha 1] | |
Mean radius | 1.86±0.05 RJ |
| Mass | 7.8+0.7 −0.8 MJ |
| Temperature | 1800±40 K |
Spectral type | L2-L6 |
Formation
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
- List of exoplanets discovered in 2020
- Brown dwarf
- 2MASS J11193254–1137466 AB
Notes
- for age of 3 Gyr
References
- "The Extrasolar Planet Encyclopaedia — CFHTWIR-Oph 98 b". Extrasolar Planets Encyclopaedia. Retrieved 11 September 2023.
- 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.
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