Planet Cha Ha 8 b

Detailed information about planet Cha Ha 8 b and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name

Cha Ha 8 b

Planet Status

Confirmed

Discovered in

2007

Update

2024-08-01

Mass

25.0 (\begin{matrix} + 7.0 \\ - 7.0 \end{matrix})

M_J 1 publication

Improved radial velocity orbit of the young binary brown dwarf candidate Cha Hα 8

Mass*sin(i)

25.0 (\begin{matrix} + 7.0 \\ - 7.0 \end{matrix})

M_J

Semi-Major Axis

1.02 (\pm 0.06)

AU 1 publication

Improved radial velocity orbit of the young binary brown dwarf candidate Cha Hα 8

Orbital Period

1895.0 (\pm 132.0)

day 1 publication

Improved radial velocity orbit of the young binary brown dwarf candidate Cha Hα 8

Eccentricity

0.59 (\pm 0.22)

1 publication

Improved radial velocity orbit of the young binary brown dwarf candidate Cha Hα 8

ω

106.0 (\pm 26.0)

deg 1 publication

Improved radial velocity orbit of the young binary brown dwarf candidate Cha Hα 8

T_peri

2453163.0 (\pm 214.0)

JD 1 publication

Improved radial velocity orbit of the young binary brown dwarf candidate Cha Hα 8

Radius

—

Inclination

—

Detection Method

Radial Velocity

Mass Meas. Method

Radial Velocity

Radius Meas. Method

—

Primary transit

—

Secondary transit

—

λ

—

Impact Parameter b

—

Time V_r=0

—

Velocity Semiamplitude K

2433.0 (\pm 440.0)

m/s 1 publication

Improved radial velocity orbit of the young binary brown dwarf candidate Cha Hα 8

Calculated temperature

—

Measured temperature

—

Hottest point longitude

—

Geometric albedo

—

Surface gravity log(g/g_H)

—

Alternate Names

Ass Cha T 1-15 Bb, FI Cha Bb, 2MASS J11074610-7740089 b

Data Source	Type	Result Value	Result Figure	Notes	Reference

Molecule	Data Source	Type	Result Value	Result Figure	Notes	Reference

15 Jun. 2010: New RV measurements exclude a planetary mass (Joergens et al. 2010)
15 Jun. 2010: Another possible solution for the mass and semi-major axis is M = 31 ± 8 M_J, a = 1.17 ± 0.07 AU (Joergens et al. 2010)

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Star

Name

Cha Ha 8

Distance

196.76 (\pm 5.68)

pc 1 publication

16-20 M_Jup Radial Velocity Companion Orbiting the Brown Dwarf Candidate Cha Hα 8

Spectral type

M6.5V

Apparent magnitude V

20.1

Mass

0.085 (\pm 0.015)

M_Sun 1 publication

16-20 M_Jup Radial Velocity Companion Orbiting the Brown Dwarf Candidate Cha Hα 8

Age

0.003 Gyr 1 publication

16-20 M_Jup Radial Velocity Companion Orbiting the Brown Dwarf Candidate Cha Hα 8

Effective temperature

2967.0 (\pm 57.0)

K 1 publication

16-20 M_Jup Radial Velocity Companion Orbiting the Brown Dwarf Candidate Cha Hα 8

Radius

—

Metallicity [Fe/H]

—

Detected Disc

—

Magnetic Field

—

RA₂₀₀₀

11:07:46.1

Dec₂₀₀₀

-77:40:08.9

Alternate Names

[NC98] Cha HA 8, Ass Cha T 1-15 B, FI Cha B, 2MASS J11074610-7740089

It is located in the nearby Cha I star-forming region as likely secondary component of a widely separated (a = 5666 AUs) binary system including late K to early M-type protostar FI Cha (Ass Cha T 1-15).

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