Planet WISE J1217+1626 b

Detailed information about planet WISE J1217+1626 b and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name

WISE J1217+1626 b

Planet Status

Confirmed

Discovered in

2012

Update

2024-06-24

Mass

22.0 (\begin{matrix} + 2.0 \\ - 2.0 \end{matrix})

M_J 1 publication

Resolved Spectroscopy of the T8.5 and Y0-0.5 Binary WISEPC J121756.91+162640.2AB

Mass*sin(i)

—

Semi-Major Axis

7.6 AU 1 publication

Resolved Spectroscopy of the T8.5 and Y0-0.5 Binary WISEPC J121756.91+162640.2AB

Orbital Period

47400.0 (\begin{matrix} + 80000.0 \\ - 11000.0 \end{matrix})

day 1 publication

Two Extraordinary Substellar Binaries at the T/Y Transition and the Y-band Fluxes of the Coolest Brown Dwarfs

Eccentricity

—

ω

—

T_peri

—

Radius

0.96 (\begin{matrix} + 0.03 \\ - 0.03 \end{matrix})

R_J 1 publication

Resolved Spectroscopy of the T8.5 and Y0-0.5 Binary WISEPC J121756.91+162640.2AB

Inclination

—

Detection Method

Imaging

Mass Meas. Method

—

Radius Meas. Method

—

Primary transit

—

Secondary transit

—

λ

—

Impact Parameter b

—

Time V_r=0

—

Velocity Semiamplitude K

—

Calculated temperature

—

Measured temperature

450.0

K 1 publication

Resolved Spectroscopy of the T8.5 and Y0-0.5 Binary WISEPC J121756.91+162640.2AB

Hottest point longitude

—

Geometric albedo

—

Surface gravity log(g/g_H)

4.8

1 publication

Resolved Spectroscopy of the T8.5 and Y0-0.5 Binary WISEPC J121756.91+162640.2AB

Alternate Names

WISEP J121756.91+162640.2 b, WISE J121756.90+162640.8 b, LIM 4 b, WDS J12179+1627 b

Data Source	Type	Result Value	Result Figure	Notes	Reference

Molecule	Data Source	Type	Reference
CH4
CH4	Measurements	Detected	2014 - LEGGETT S.
H2
H2	Measurements	Detected	2014 - LEGGETT S.
H2O
H2O	Measurements	Detected	2014 - LEGGETT S.

Binary brown dwarf.

(Leggett et al. 2014): Spectral type Y0-0.5, with related molecules (in addition to those indicated above, NH₃ absorption detected).

(Leggett et al. 2014): very thin or no chloride/sulfide cloud layers, with a sedimentation parameter fsed > 5. Age 6 ± 2 Gyrs.

No link

System without star

Distance

10.0 (\pm 2.0)

RA₂₀₀₀

12:17:57.0

Dec₂₀₀₀

+16:26:40.0

Planet WISE J1217+1626 b

Planet

Basic informations 28 parameters

Atmospheric parameters : Temperatures 0 temperatures

Atmospheric parameters : Molecules 3 molecules

Remarks Some remarks

Other web pages No page

System without star

System informations 3 parameters

Planet WISE J1217+1626 b

Planet

Basic informations 28 parameters

Atmospheric parameters : Temperatures 0 temperatures

Atmospheric parameters : Molecules 3 molecules

Remarks Some remarks

Other web pages No page

System without star

System informations 3 parameters

Related publications

WISE 2150-7520AB: A Very Low-mass, Wide Comoving Brown Dwarf System Discovered through the Citizen Science Project Backyard Worlds: Planet 9

Imaging Extrasolar Giant Planets

Resolved Spectroscopy of the T8.5 and Y0-0.5 Binary WISEPC J121756.91+162640.2AB

Distances, Luminosities, and Temperatures of the Coldest Known Substellar Objects

Two Extraordinary Substellar Binaries at the T/Y Transition and the Y-band Fluxes of the Coolest Brown Dwarfs