Planet BD-21 397 b

Detailed information about planet BD-21 397 b and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name

BD-21 397 b

Planet Status

Unconfirmed

Discovered in

2023

Publication Status

—

Update

2025-08-13

Mass

—

Mass*sin(i)

0.7 (\pm 0.1)

M_J 1 publication

The HARPS search for southern extra-solar planets. XLVII. Five Jupiter-mass planets in long-period orbits, one highly irradiated Neptune, one brown dwarf, and five stellar binaries

Semi-Major Axis

2.63 (\begin{matrix} + 0.06 \\ - 0.05 \end{matrix})

AU 1 publication

The HARPS search for southern extra-solar planets. XLVII. Five Jupiter-mass planets in long-period orbits, one highly irradiated Neptune, one brown dwarf, and five stellar binaries

Orbital Period

1891.0 (\begin{matrix} + 56.0 \\ - 48.0 \end{matrix})

day 1 publication

The HARPS search for southern extra-solar planets. XLVII. Five Jupiter-mass planets in long-period orbits, one highly irradiated Neptune, one brown dwarf, and five stellar binaries

Eccentricity

0.1 (\pm 0.1)

1 publication

The HARPS search for southern extra-solar planets. XLVII. Five Jupiter-mass planets in long-period orbits, one highly irradiated Neptune, one brown dwarf, and five stellar binaries

Angular distance

—

ω

-55.0 (\begin{matrix} + 61.0 \\ - 39.0 \end{matrix})

deg 1 publication

The HARPS search for southern extra-solar planets. XLVII. Five Jupiter-mass planets in long-period orbits, one highly irradiated Neptune, one brown dwarf, and five stellar binaries

T_peri

56490.0 (\begin{matrix} + 255.0 \\ - 372.0 \end{matrix})

JD 1 publication

The HARPS search for southern extra-solar planets. XLVII. Five Jupiter-mass planets in long-period orbits, one highly irradiated Neptune, one brown dwarf, and five stellar binaries

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

14.0 (\pm 2.0)

m/s 1 publication

The HARPS search for southern extra-solar planets. XLVII. Five Jupiter-mass planets in long-period orbits, one highly irradiated Neptune, one brown dwarf, and five stellar binaries

Calculated temperature

—

Measured temperature

—

Hottest point longitude

—

Geometric albedo

—

Surface gravity log(g/g_H)

—

Alternate Names

GJ 1044 b, HIP 10337 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

BD-21 397

Distance

23.74 (\pm 0.009)

pc 1 publication

The GAPS programme at TNG. XLVI. Deep search for low-mass planets in late-dwarf systems hosting cold Jupiters

Spectral type

K7V

Apparent magnitude V

9.8

Apparent magnitude I

—

Apparent magnitude J

—

Apparent magnitude H

—

Apparent magnitude K

—

Mass

0.679 (\pm 0.017)

M_Sun 1 publication

The GAPS programme at TNG. XLVI. Deep search for low-mass planets in late-dwarf systems hosting cold Jupiters

Age

6.2 (\pm 4.7)

Gyr 1 publication

The GAPS programme at TNG. XLVI. Deep search for low-mass planets in late-dwarf systems hosting cold Jupiters

Effective temperature

4051.0 (\pm 239.0)

K 1 publication

The GAPS programme at TNG. XLVI. Deep search for low-mass planets in late-dwarf systems hosting cold Jupiters

Radius

0.747 (\pm 0.088)

R_Sun 1 publication

The GAPS programme at TNG. XLVI. Deep search for low-mass planets in late-dwarf systems hosting cold Jupiters

Metallicity [Fe/H]

0.12 (\pm 0.1)

1 publication

The GAPS programme at TNG. XLVI. Deep search for low-mass planets in late-dwarf systems hosting cold Jupiters

Detected Disc

—

Magnetic Field

—

RA₂₀₀₀

02:13:12.0

Dec₂₀₀₀

-21:11:47.0

Alternate Names

GJ 1044, HIP 10337

No remarks

No link

Simbad
Most recent references (ADS)

Planet BD-21 397 b

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 1 planet

Remarks No remark

Other web pages No page

More data 2 references

Planet BD-21 397 b

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 1 planet

Remarks No remark

Other web pages No page

More data 2 references

Related publications

Orbits and Masses for 156 Companions from Combined Astrometry and Radial Velocities, and A Validation of Gaia Non-Single Star Solutions

The HARPS search for southern extra-solar planets. XLVII. Five Jupiter-mass planets in long-period orbits, one highly irradiated Neptune, one brown dwarf, and five stellar binaries

The GAPS programme at TNG. XLVI. Deep search for low-mass planets in late-dwarf systems hosting cold Jupiters