Planet WISPIT 1 (AB)b

Detailed information about planet WISPIT 1 (AB)b and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name

WISPIT 1 (AB)b

Planet Status

Confirmed

Discovered in

2025

Publication Status

Published in a refereed paper

Update

2025-08-27

Mass

10.4 (\begin{matrix} + 0.7 \\ - 0.8 \end{matrix})

M_J 1 publication

WIde Separation Planets In Time (WISPIT): Two directly imaged exoplanets around the Sun-like stellar binary WISPIT 1

Mass*sin(i)

—

Semi-Major Axis

338.0 AU 1 publication

WIde Separation Planets In Time (WISPIT): Two directly imaged exoplanets around the Sun-like stellar binary WISPIT 1

Orbital Period

—

Eccentricity

—

Angular distance

—

ω

—

T_peri

—

Radius

—

Inclination

—

Detection Method

Imaging

Mass Meas. Method

Spectrum

Radius Meas. Method

—

Primary transit

—

Secondary transit

—

λ

—

Impact Parameter b

—

Time V_r=0

—

Velocity Semiamplitude K

—

Calculated temperature

—

Measured temperature

—

Hottest point longitude

—

Geometric albedo

—

Surface gravity log(g/g_H)

—

Alternate Names

—

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

WISPIT 1 (AB)

Distance

228.85 (\begin{matrix} + 0.59 \\ - 0.68 \end{matrix})

pc 1 publication

WIde Separation Planets In Time (WISPIT): Two directly imaged exoplanets around the Sun-like stellar binary WISPIT 1

Spectral type

K4V+M5.5V

Apparent magnitude V

13.1

Apparent magnitude I

—

Apparent magnitude J

—

Apparent magnitude H

—

Apparent magnitude K

—

Mass

2.5 M_Sun 1 publication

WIde Separation Planets In Time (WISPIT): Two directly imaged exoplanets around the Sun-like stellar binary WISPIT 1

Age

0.0156 (\begin{matrix} + 0.0014 \\ - 0.0037 \end{matrix})

Gyr 1 publication

WIde Separation Planets In Time (WISPIT): Two directly imaged exoplanets around the Sun-like stellar binary WISPIT 1

Effective temperature

4670.0 (\begin{matrix} + 990.0 \\ - 540.0 \end{matrix})

K 1 publication

WIde Separation Planets In Time (WISPIT): Two directly imaged exoplanets around the Sun-like stellar binary WISPIT 1

Radius

0.95 R_Sun

Metallicity [Fe/H]

—

Detected Disc

—

Magnetic Field

—

RA₂₀₀₀

07:51:11.7

Dec₂₀₀₀

-50:08:15.7

Alternate Names

TIC 268764100, 2MASS J07511168-5008158, WISE J075111.66-500815.8

Van Capelleveen et al. (2025): Binary system (m_Tot = 2.5 M_Sol) including an M dwarf companion (Teff = 3300 K, L_B = 0.09 L_Sol) about 10.5 AUs away. The system is likely triple if nearby star 2MASS J07512310-5008109 is bound (109.88 arcseconds, 25,147 AUs at 229 pc). If so, the latter star would be the actual primary component of the system and WISPIT1 A and B the secondary ones.

No link