Planet HD 79555 Cb

Detailed information about planet HD 79555 Cb and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name

HD 79555 Cb

Planet Status

Confirmed

Discovered in

2006

Publication Status

—

Update

2025-09-16

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

—

Angular distance

2.11 arcsec

ω

—

T_peri

—

Radius

—

Inclination

—

Detection Method

Imaging

Mass Meas. Method

Spectrum

Radius Meas. Method

—

Primary transit

—

Secondary transit

—

λ

—

Impact Parameter b

—

Time V_r=0

—

Velocity Semiamplitude K

—

Calculated temperature

—

Measured temperature

—

Hottest point longitude

—

Geometric albedo

—

Surface gravity log(g/g_H)

—

Alternate Names

RED 17 B, 2MASS J09153413+0422045 B

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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