Planet 2MASS J0019-6226

Detailed information about planet 2MASS J0019-6226 and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name

2MASS J0019-6226

Planet Status

Confirmed

Discovered in

2015

Update

2024-12-17

Mass

14.88 (\pm 4.51)

M_J 1 publication

Population Properties of Brown Dwarf Analogs to Exoplanets

Mass*sin(i)

—

Semi-Major Axis

—

Orbital Period

—

Eccentricity

—

ω

—

T_peri

—

Radius

—

Inclination

—

Detection Method

Imaging

Mass Meas. Method

—

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

2MASS J00191296-6226005, HIP 1481 (ABC)b

Data Source	Type	Result Value	Result Figure	Notes	Reference

Molecule	Data Source	Type	Result Value	Result Figure	Notes	Reference

2MASS J00191296-6226005 was identified as candidate standalone L-type brown dwarf (spT L1) 21 pc away but parallax measurements actually show farther distance and common proper motion with exoplanet host star HIP 1481, about 3772 arcseconds away (0.75 pc or 154,650 AUs at 41 pc).
Faherty et al. (2016) provide a mass estimate of about 15 M_Jup for the companion, well within planetary range, hence this should be regarded as far-flung circumbinary planet, possibly coorbital or resonant with companion star 1RXS J001528.8-641501 or HIP 1481 C, which lies 3016 arcseconds away (0.6 pc or 123,650 AUs at 41 pc) in 4:5 resonance.

No link

Star

Name

HIP 1481 A

Distance

40.82 pc 1 publication

Constraining masses and separations of unseen companions to five accelerating nearby stars

Spectral type

F8V

Apparent magnitude V

7.46

Mass

1.17 (\pm 0.16)

M_Sun 1 publication

The Revised TESS Input Catalog and Candidate Target List

Age

0.045 Gyr 1 publication

Constraining masses and separations of unseen companions to five accelerating nearby stars

Effective temperature

6147.0 (\pm 126.66)

K 1 publication

The Revised TESS Input Catalog and Candidate Target List

Radius

1.11 (\pm 0.05)

R_Sun 1 publication

The Revised TESS Input Catalog and Candidate Target List

Metallicity [Fe/H]

—

Detected Disc

—

Magnetic Field

—

RA₂₀₀₀

00:18:26.0

Dec₂₀₀₀

-63:28:39.0

Alternate Names

HD 1466

HIP 1481 is part of a multiple system including a pair of M dwarfs (spT M5.5V and M1.8V) located 1817 and 3023 arcseconds away (74,500 and 124,000 AUs at 41 pc) and an L-type substellar/planetary companion 3772 arcseconds away (154,650 AUs at 41 pc), in likely 4:5 resonance with companion star "C".

No link