CFHTWIR-Oph 98 b

CFHTWIR-Oph 98 b Image

Description: 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. The pair form a binary system. The primary is a M9–L1 dwarf and the secondary is an L dwarf with a spectral type of L2–L6. Both spectral types are estimated from photometry. The pair is separated by 200 astronomical units and has a low gravitational binding energy. The primary Oph 98A has a spectrum taken in 2012 with VLT/ISAAC, matching a spectral type of M9.75 and from Spitzer photometry and near-infrared photometry it is surrounded by a class II disk. This disk has a mass of 0.135 MJ according to a study using SED-modelling.

Physical Properties

Mass (Jupiter mass): 7.8 MJ

Radius (Jupiter radius): 1.86 RJ

Density: 1.5 g/cm³

Equilibrium Temperature: 1800.0 K

Orbital Parameters

Orbital Period: 8040000.0 days

Semi-major Axis: 200.0 AU

Eccentricity: Unknown

Inclination: Unknown

Host Star Properties

Host Star: CFHTWIR-Oph 98 A

Spectral Type: M9-L1

Temperature: 2320.0 K

Stellar Mass: 0.01 M☉

Stellar Radius: 0.24 R☉

Discovery Information

Planet Letter: b

Object ID: 3.12705

Host ID: 2.572913

Discovery Date: 2020-12

Discovery Year: 2021

Discovery Method: Imaging

Discovery Locale: Space

Discovery Facility: Hubble Space Telescope

Discovery Instrument: WFC3 Camera

Back to List