Planet KPNO-Tau 1

Detailed information about planet KPNO-Tau 1 and its parameters.

Planet parameters Publications Observability Predictor Exo3D

Planet

Name

KPNO-Tau 1

Planet Status

Confirmed

Discovered in

2002

Publication Status

—

Update

2025-08-16

Mass

25.0 (\pm 5.0)

M_J 3 publications

Multiplicity of young isolated planetary mass objects in Taurus and Upper Scorpius
Towards Precise Ages and Masses of Free Floating Planetary Mass Brown Dwarfs
Multiplicity and Optical Excess across the Substellar Boundary in Taurus

Mass*sin(i)

—

Semi-Major Axis

56296.0 AU 1 publication

Multiplicity and clustering in Taurus star-forming region. I. Unexpected ultra-wide pairs of high-order multiplicity in Taurus

Orbital Period

—

Eccentricity

—

Angular distance

402.41 arcsec

ω

—

T_peri

—

Radius

2.7

R_J 1 publication

Multiplicity and Optical Excess across the Substellar Boundary in Taurus

Inclination

—

Detection Method

Imaging

Mass Meas. Method

Spectrum

Radius Meas. Method

Flux

Primary transit

—

Secondary transit

—

λ

—

Impact Parameter b

—

Time V_r=0

—

Velocity Semiamplitude K

—

Calculated temperature

2960.0 K

Measured temperature

—

Hottest point longitude

—

Geometric albedo

—

Surface gravity log(g/g_H)

—

Alternate Names

2MASS J04151471+2800096, XEST20-066 b, LkCa 3 Cb

Data Source	Type	Result Value	Result Figure	Notes	Reference

Molecule	Data Source	Type	Result Value	Result Figure	Notes	Reference

Spectral type M8.5e. L = 0.005 L_Sol. Member of Taurus-Auriga star-forming region. Age 1-2 Myr.
Joncour et al. (2017) deem KPNO-Tau 1 to be gravitationally bound to protostar XEST20-066 56,296 AUs away. Physical association to LkCa 3 binary 80,734 AUs away is likewise possible suggesting a higher degree multiplicity.

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Star

Name

XEST20-066

Distance

128.17 pc 1 publication

Stellar Properties for a Comprehensive Collection of Star-forming Regions in the SDSS APOGEE-2 Survey

Spectral type

M5.2

Apparent magnitude V

—

Apparent magnitude I

—

Apparent magnitude J

—

Apparent magnitude H

—

Apparent magnitude K

—

Mass

0.5 M_Sun 1 publication

Stellar Properties for a Comprehensive Collection of Star-forming Regions in the SDSS APOGEE-2 Survey

Age

—

Effective temperature

3388.0 K 1 publication

Stellar Properties for a Comprehensive Collection of Star-forming Regions in the SDSS APOGEE-2 Survey

Radius

1.2 R_Sun

Metallicity [Fe/H]

-0.08 1 publication

Stellar Properties for a Comprehensive Collection of Star-forming Regions in the SDSS APOGEE-2 Survey

Detected Disc

—

Magnetic Field

—

RA₂₀₀₀

04:14:47.4

Dec₂₀₀₀

+28:03:05.5

Alternate Names

2MASS J04144739+2803055, LkCa 3 C

L = 0.17 L_Sol (Román-Zúñiga et al. 2023). Likely bound to LkCa 3 binary system about 82,000 AUs away (Joncour et al. 2017). If so, XEST20-066 would be the tertiary component as "LkCa 3 C".

No link