Planet LTT 9779 b

Detailed information about planet LTT 9779 b and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name

LTT 9779 b

Planet Status

Confirmed

Discovered in

2019

Update

2023-07-11

Mass

0.09225 (\begin{matrix} + 0.00245 \\ - 0.00255 \end{matrix})

M_J 2 publications

An ultrahot Neptune in the Neptune desert
A search for multi-planet systems with TESS using a Bayesian N-body retrieval and machine learning

Mass*sin(i)

—

Semi-Major Axis

0.01679 (\pm 0.00014)

Orbital Period

0.7920641 (\pm 1.4e-07)

day 3 publications

Characterising a World Within the Hot Neptune Desert: Transit Observations of LTT 9779 b with HST WFC3
An ultrahot Neptune in the Neptune desert
A search for multi-planet systems with TESS using a Bayesian N-body retrieval and machine learning

Eccentricity

— 1 publication

An ultrahot Neptune in the Neptune desert

ω

—

T_peri

—

Radius

0.4211 (\pm 0.0205)

R_J 2 publications

An ultrahot Neptune in the Neptune desert
A search for multi-planet systems with TESS using a Bayesian N-body retrieval and machine learning

Inclination

76.39 (\pm 0.43)

deg 2 publications

An ultrahot Neptune in the Neptune desert
A search for multi-planet systems with TESS using a Bayesian N-body retrieval and machine learning

Detection Method

Primary Transit

Mass Meas. Method

Radial Velocity

Radius Meas. Method

Primary Transit

Primary transit

2459043.31061 (\pm 9e-05)

JD 2 publications

Characterising a World Within the Hot Neptune Desert: Transit Observations of LTT 9779 b with HST WFC3
An ultrahot Neptune in the Neptune desert

Secondary transit

—

λ

—

Impact Parameter b

—

Time V_r=0

—

Velocity Semiamplitude K

19.65 (\pm 0.43)

m/s 1 publication

An ultrahot Neptune in the Neptune desert

Calculated temperature

2000.0 K 1 publication

A search for multi-planet systems with TESS using a Bayesian N-body retrieval and machine learning

Measured temperature

—

Hottest point longitude

—

Geometric albedo

0.8 (\begin{matrix} + 0.1 \\ - 0.17 \end{matrix})

Surface gravity log(g/g_H)

—

Alternate Names

TOI-193 b

Data Source	Type	Result Value	Result Figure	Notes	Reference

Molecule	Data Source	Type	Result Value	Result Figure	Notes	Reference

No remarks

No link

Star

Name

LTT 9779

Distance

80.6 (\pm 0.33)

pc 1 publication

An ultrahot Neptune in the Neptune desert

Spectral type

G8

Apparent magnitude V

9.76

Mass

1.0 (\pm 0.03)

M_Sun 1 publication

An ultrahot Neptune in the Neptune desert

Age

—

Effective temperature

5445.0 (\pm 84.0)

K 1 publication

An ultrahot Neptune in the Neptune desert

Radius

0.92 (\pm 0.01)

R_Sun 1 publication

An ultrahot Neptune in the Neptune desert

Metallicity [Fe/H]

0.25 (\pm 0.08)

1 publication

An ultrahot Neptune in the Neptune desert

Detected Disc

—

Magnetic Field

—

RA₂₀₀₀

23:54:40.0

Dec₂₀₀₀

-37:37:41.0

Alternate Names

—

No remarks

No link

Simbad
Most recent references (ADS)

Planet LTT 9779 b

Planet

Basic informations 28 parameters

Atmospheric parameters : Temperatures 0 temperatures

Atmospheric parameters : Molecules 0 molecules

Remarks No remark

Other web pages No page

Star

Basic informations 13 parameters

Planetary system 1 planet

Remarks No remark

Other web pages No page

More data 2 references

Planet LTT 9779 b

Planet

Basic informations 28 parameters

Atmospheric parameters : Temperatures 0 temperatures

Atmospheric parameters : Molecules 0 molecules

Remarks No remark

Other web pages No page

Star

Basic informations 13 parameters

Planetary system 1 planet

Remarks No remark

Other web pages No page

More data 2 references

Related publications

A High-Resolution Non-Detection of Escaping Helium In The Ultra-Hot Neptune LTT 9779b: Evidence for Weakened Evaporation

Survival in the Neptune desert: LTT 9779 b kept its atmosphere thanks to an unusually X-ray faint host star

Muted Features in the JWST NIRISS Transmission Spectrum of Hot Neptune LTT 9779b

Muted Features in the JWST NIRISS Transmission Spectrum of Hot-Neptune LTT 9779 b

Characterising a World Within the Hot Neptune Desert: Transit Observations of LTT 9779 b with HST WFC3

Converting the sub-Jovian desert of exoplanets to a savanna with TESS, PLATO and Ariel

The extremely high albedo of LTT 9779 b revealed by CHEOPS - An ultrahot Neptune with a highly metallic atmosphere

Empirical limb-darkening coefficients & transit parameters of known exoplanets from TESS

Phase Curves of Hot Neptune LTT 9779b Suggest a High-Metallicity Atmosphere

Spitzer Reveals Evidence of Molecular Absorption in the Atmosphere of the Hot Neptune LTT 9779b

An ultrahot Neptune in the Neptune desert

A search for multi-planet systems with TESS using a Bayesian N-body retrieval and machine learning