Planet HD 79555 Cb

Detailed information about planet HD 79555 Cb and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name

HD 79555 Cb

Mass

62.0 (\pm 10.0)

M_J 1 publication

A Search for Binary Systems among the Nearest L Dwarfs

Mass*sin(i)

—

Semi-Major Axis

37.5 AU 2 publications

The Gaia ultracool dwarf sample - V: the ultracool dwarf companion catalogue
A Search for Binary Systems among the Nearest L Dwarfs

Orbital Period

—

Eccentricity

—

ω

—

T_peri

—

Radius

—

Inclination

—

Primary transit

—

Secondary transit

—

λ

—

Impact Parameter b

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Time V_r=0

—

Velocity Semiamplitude K

—

Calculated temperature

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Measured temperature

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Hottest point longitude

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Surface gravity log(g/g_H)

—

Data Source	Type	Result Value	Result Figure	Notes	Reference

Molecule	Data Source	Type	Result Value	Result Figure	Notes	Reference

16 Sep 2025: The brown dwarf has been identified as widely separated companion to binary star HD 79555 in 2018-2020, but its discovery as stand-alone substellar object of spectral type L6 dates back to 2006 by Reid et al., whom also found an equal-mass binary companion 2.11 arcseconds away (37.5 AUs at 17.8 pc). This makes HD 79555 (AB)b a circumbinary double brown dwarf.

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