Planet GJ 777 Ad

Detailed information about planet GJ 777 Ad and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name

GJ 777 Ad

Planet Status

Confirmed

Discovered in

2020

Publication Status

—

Update

2025-08-26

Mass

0.0362 (\begin{matrix} + 0.006 \\ - 0.0041 \end{matrix})

M_J 1 publication

The NEID Earth Twin Survey. IV. Confirming an 89 d, m sin i = 10 M_⊕ Planet Orbiting a Nearby Sun-like Star

Mass*sin(i)

0.03219 (\begin{matrix} + 0.00255 \\ - 0.0025 \end{matrix})

M_J 2 publications

The NEID Earth Twin Survey. IV. Confirming an 89 d, m sin i = 10 M_⊕ Planet Orbiting a Nearby Sun-like Star
Understanding the Impacts of Stellar Companions on Planet Formation and Evolution: A Survey of Stellar and Planetary Companions within 25 pc

Semi-Major Axis

0.3886 (\pm 0.0046)

AU 2 publications

The NEID Earth Twin Survey. IV. Confirming an 89 d, m sin i = 10 M_⊕ Planet Orbiting a Nearby Sun-like Star
Understanding the Impacts of Stellar Companions on Planet Formation and Evolution: A Survey of Stellar and Planetary Companions within 25 pc

Orbital Period

88.69 (\begin{matrix} + 0.051 \\ - 0.049 \end{matrix})

day 2 publications

The NEID Earth Twin Survey. IV. Confirming an 89 d, m sin i = 10 M_⊕ Planet Orbiting a Nearby Sun-like Star
Understanding the Impacts of Stellar Companions on Planet Formation and Evolution: A Survey of Stellar and Planetary Companions within 25 pc

Eccentricity

0.058 (\begin{matrix} + 0.062 \\ - 0.04 \end{matrix})

2 publications

The NEID Earth Twin Survey. IV. Confirming an 89 d, m sin i = 10 M_⊕ Planet Orbiting a Nearby Sun-like Star
Understanding the Impacts of Stellar Companions on Planet Formation and Evolution: A Survey of Stellar and Planetary Companions within 25 pc

Angular distance

0.029 arcsec

ω

160.0 (\begin{matrix} + 115.0 \\ - 100.0 \end{matrix})

deg 2 publications

The NEID Earth Twin Survey. IV. Confirming an 89 d, m sin i = 10 M_⊕ Planet Orbiting a Nearby Sun-like Star
Understanding the Impacts of Stellar Companions on Planet Formation and Evolution: A Survey of Stellar and Planetary Companions within 25 pc

T_peri

—

Radius

0.18 (\begin{matrix} + 0.134 \\ - 0.0223 \end{matrix})

R_J 1 publication

The NEID Earth Twin Survey. IV. Confirming an 89 d, m sin i = 10 M_⊕ Planet Orbiting a Nearby Sun-like Star

Inclination

88.0 (\begin{matrix} + 43.0 \\ - 41.0 \end{matrix})

deg 1 publication

The NEID Earth Twin Survey. IV. Confirming an 89 d, m sin i = 10 M_⊕ Planet Orbiting a Nearby Sun-like Star

Detection Method

Radial Velocity

Mass Meas. Method

Radial Velocity

Radius Meas. Method

Theoretical

Primary transit

—

Secondary transit

—

λ

50.3 (\begin{matrix} + 7.7 \\ - 7.9 \end{matrix})

deg 1 publication

The NEID Earth Twin Survey. IV. Confirming an 89 d, m sin i = 10 M_⊕ Planet Orbiting a Nearby Sun-like Star

Impact Parameter b

—

Time V_r=0

—

Velocity Semiamplitude K

1.48 (\pm 0.11)

m/s 2 publications

The NEID Earth Twin Survey. IV. Confirming an 89 d, m sin i = 10 M_⊕ Planet Orbiting a Nearby Sun-like Star
Understanding the Impacts of Stellar Companions on Planet Formation and Evolution: A Survey of Stellar and Planetary Companions within 25 pc

Calculated temperature

—

Measured temperature

—

Hottest point longitude

—

Geometric albedo

—

Surface gravity log(g/g_H)

—

Alternate Names

HD 190360 d

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

GJ 777 A

Distance

16.0069 (\pm 0.0159)

pc 1 publication

The Revised TESS Input Catalog and Candidate Target List

Spectral type

G5IV-V

Apparent magnitude V

5.74

Apparent magnitude I

—

Apparent magnitude J

—

Apparent magnitude H

—

Apparent magnitude K

—

Mass

0.98 (\pm 0.1197)

M_Sun 1 publication

The Revised TESS Input Catalog and Candidate Target List

Age

8.2 Gyr 1 publication

Five Decades of Chromospheric Activity in 59 Sun-like Stars and New Maunder Minimum Candidate HD 166620

Effective temperature

5549.0 (\pm 111.723)

K 2 publications

The Revised TESS Input Catalog and Candidate Target List
The Revised TESS Input Catalog and Candidate Target List

Radius

1.168 (\pm 0.0536)

R_Sun 1 publication

The Revised TESS Input Catalog and Candidate Target List

Metallicity [Fe/H]

0.19 (\pm 0.1)

1 publication

The Revised TESS Input Catalog and Candidate Target List

Detected Disc

—

Magnetic Field

—

RA₂₀₀₀

20:03:37.0

Dec₂₀₀₀

+29:53:48.0

Alternate Names

HR 7670, LAL 38380, LDS 6339 A, HD 190360

GJ 777 has a faint M dwarf companion star (G 125-55 or GJ 777 B, spT M4.5V) 2849 AUs away which in turn could be an unresolved binary with a similar companion (a ~70 AUs).

No link

Simbad
Most recent references (ADS)

Planet GJ 777 Ad

Planet

Basic informations 30 parameters

Atmospheric parameters : Temperatures 0 temperatures

Atmospheric parameters : Molecules 0 molecules

Remarks No remark

Other web pages No page

Star

Basic informations 17 parameters

Planetary system 3 planets

Remarks Some remarks

Other web pages No page

More data 2 references

Planet GJ 777 Ad

Planet

Basic informations 30 parameters

Atmospheric parameters : Temperatures 0 temperatures

Atmospheric parameters : Molecules 0 molecules

Remarks No remark

Other web pages No page

Star

Basic informations 17 parameters

Planetary system 3 planets

Remarks Some remarks

Other web pages No page

More data 2 references

Related publications

The NEID Earth Twin Survey. IV. Confirming an 89 d, m sin i = 10 M⊕ Planet Orbiting a Nearby Sun-like Star

Gaia Search for (sub)stellar Companions of Exoplanet Hosts

Multiplicity of stars with planets in the solar neighbourhood

Five Decades of Chromospheric Activity in 59 Sun-like Stars and New Maunder Minimum Candidate HD 166620

Understanding the Impacts of Stellar Companions on Planet Formation and Evolution: A Survey of Stellar and Planetary Companions within 25 pc

The Revised TESS Input Catalog and Candidate Target List

Eleven Exoplanet Host Star Angular Diameters from the Chara Array

Two Suns in The Sky: Stellar Multiplicity in Exoplanet Systems

HIPPARCOS age-metallicity relation of the solar neighbourhood disc stars

Catalogue of [Fe/H] of F, G, K stars

Nearby stars of the Galactic disk and halo

The NEID Earth Twin Survey. IV. Confirming an 89 d, m sin i = 10 M_⊕ Planet Orbiting a Nearby Sun-like Star