Planet Cha Ha 1

Detailed information about planet Cha Ha 1 and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name

Cha Ha 1

Planet Status

Confirmed

Discovered in

1998

Publication Status

Published in a refereed paper

Update

2025-08-08

Mass

45.0 (\pm 5.0)

M_J 2 publications

MINDS. Cha Hα 1, a brown dwarf with a hydrocarbon-rich disk
Probing the brown dwarf population of the Chamaeleon I star forming region

Mass*sin(i)

—

Semi-Major Axis

—

Orbital Period

—

Eccentricity

—

Angular distance

—

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

2770.0

K 1 publication

Probing the brown dwarf population of the Chamaeleon I star forming region

Hottest point longitude

—

Geometric albedo

—

Surface gravity log(g/g_H)

—

Alternate Names

ISO-ChaI 95, 2MASS J11071668-7735532

Data Source	Type	Result Value	Result Figure	Notes	Reference

Molecule	Data Source	Type	Result Value	Result Figure	Notes	Reference

Spectral type M7.5/8e. Age 2-8 Myr. Visual companion to young star HL Cha (131.14 arcseconds, 25,440 AUs at 194 pc if gravitationally bound).
The object is surrounded by a dust disk containing various hydrocarbons (C₆H₆ , C₃H₄, C₄H₂, C₂H₄, C₂H₆, CH₃, and CH₃), as well as CO₂, HCN, H₂ and H₂O. Two isotopologues (¹³CCH₂ and ¹³CO₂) have been detected too (Morales-Calderon et al. 2025).