Planet HIP 99770 b

Detailed information about planet HIP 99770 b and its parameters.

Planet parameters Publications Observability Predictor Exo3D

Planet

Name

HIP 99770 b

Planet Status

Confirmed

Discovered in

2022

Publication Status

—

Update

2025-12-03

Mass

17.0 (\pm 6.0)

M_J 3 publications

Orbit and atmosphere of HIP 99770 b through the eyes of VLTI/GRAVITY
Atmospheric characterization of the super-Jupiter HIP 99770 b with KPIC
Direct Imaging and Astrometric Discovery of a Superjovian Planet Orbiting an Accelerating Star

Mass*sin(i)

—

Semi-Major Axis

15.8 (\begin{matrix} + 1.7 \\ - 1.0 \end{matrix})

AU 2 publications

Orbit and atmosphere of HIP 99770 b through the eyes of VLTI/GRAVITY
Direct Imaging and Astrometric Discovery of a Superjovian Planet Orbiting an Accelerating Star

Orbital Period

—

Eccentricity

0.31 (\pm 0.12)

2 publications

Orbit and atmosphere of HIP 99770 b through the eyes of VLTI/GRAVITY
Direct Imaging and Astrometric Discovery of a Superjovian Planet Orbiting an Accelerating Star

Angular distance

—

ω

210.0 (\begin{matrix} + 90.0 \\ - 50.0 \end{matrix})

deg 1 publication

Orbit and atmosphere of HIP 99770 b through the eyes of VLTI/GRAVITY

T_peri

—

Radius

0.93 (\begin{matrix} + 0.22 \\ - 0.15 \end{matrix})

R_J 1 publication

Atmospheric characterization of the super-Jupiter HIP 99770 b with KPIC

Inclination

152.0 (\pm 10.0)

deg 2 publications

Orbit and atmosphere of HIP 99770 b through the eyes of VLTI/GRAVITY
Direct Imaging and Astrometric Discovery of a Superjovian Planet Orbiting an Accelerating Star

Detection Method

Imaging

Mass Meas. Method

Astrometry

Radius Meas. Method

—

Primary transit

—

Secondary transit

—

λ

—

Impact Parameter b

—

Time V_r=0

—

Velocity Semiamplitude K

—

Calculated temperature

—

Measured temperature

1400.0 K 1 publication

Direct Imaging and Astrometric Discovery of a Superjovian Planet Orbiting an Accelerating Star

Hottest point longitude

—

Geometric albedo

—

Surface gravity log(g/g_H)

—

Alternate Names

29 Cyg b, b3 Cyg b, HD 192640 b

Data Source	Type	Result Value	Result Figure	Notes	Reference

Molecule	Data Source	Type	Result Value	Result Figure	Notes	Reference

Winterhalder et al. (2025): Spectral type L8.

No link

Star

Name

HIP 99770

Distance

40.74 pc 1 publication

Direct Imaging and Astrometric Discovery of a Superjovian Planet Orbiting an Accelerating Star

Spectral type

A2V

Apparent magnitude V

4.99

Apparent magnitude I

—

Apparent magnitude J

—

Apparent magnitude H

—

Apparent magnitude K

—

Mass

1.9 (\pm 0.2)

M_Sun 2 publications

Direct Imaging and Astrometric Discovery of a Superjovian Planet Orbiting an Accelerating Star
Orbit and atmosphere of HIP 99770 b through the eyes of VLTI/GRAVITY

Age

0.028 (\begin{matrix} + 0.015 \\ - 0.014 \end{matrix})

Gyr 1 publication

Orbit and atmosphere of HIP 99770 b through the eyes of VLTI/GRAVITY

Effective temperature

8085.0 (\begin{matrix} + 33.0 \\ - 35.0 \end{matrix})

K 2 publications

Direct Imaging and Astrometric Discovery of a Superjovian Planet Orbiting an Accelerating Star
Orbit and atmosphere of HIP 99770 b through the eyes of VLTI/GRAVITY

Radius

1.96 (\pm 0.01)

R_Sun 1 publication

Orbit and atmosphere of HIP 99770 b through the eyes of VLTI/GRAVITY

Metallicity [Fe/H]

—

Detected Disc

—

Magnetic Field

—

RA₂₀₀₀

20:14:32.0

Dec₂₀₀₀

+36:48:23.0

Alternate Names

29 Cyg, b3 Cyg, V1644 Cyg, HD 192640

No remarks

No link

Simbad
Most recent references (ADS)

Planet HIP 99770 b

Planet

Basic informations 30 parameters

Atmospheric parameters : Temperatures 0 temperatures

Atmospheric parameters : Molecules 0 molecules

Remarks Some remarks

Other web pages No page

Star

Basic informations 17 parameters

Planetary system 1 planet

Remarks No remark

Other web pages No page

More data 2 references

Planet HIP 99770 b

Planet

Basic informations 30 parameters

Atmospheric parameters : Temperatures 0 temperatures

Atmospheric parameters : Molecules 0 molecules

Remarks Some remarks

Other web pages No page

Star

Basic informations 17 parameters

Planetary system 1 planet

Remarks No remark

Other web pages No page

More data 2 references

Related publications

Direct Images of CO2 Absorption in the Atmosphere of a Super-Jupiter: Enhanced Metallicity Suggestive of Formation in a Disk

Orbit and atmosphere of HIP 99770 b through the eyes of VLTI/GRAVITY

Multi-band Spectral and Astrometric Characterization of the HIP 99770 b Planet with SCExAO/CHARIS and Gaia

Atmospheric characterization of the super-Jupiter HIP 99770 b with KPIC

Direct Imaging and Astrometric Discovery of a Superjovian Planet Orbiting an Accelerating Star