Stellar HostProfile

CI Tau

K7 • 158.0 pc

Records

literature rows

Planets

system count

References

distinct source labels

TIC: TIC 61230756

Approximate color

from effective temperature

Stellar source: Flagg et al. 2019 • System source: TICv8

Mass

0.90 Msun

single adopted value

1 values • 1 distinct

Age

2.50e-3 Gyr

single adopted value

1 values • 1 distinct

Luminosity

-0.11 log(Lsun)

-0.25 to -0.11

2 values • 2 distinct

Distance

158.0 pc

single adopted value

3 values • 1 distinct

Spectral Type

Consistent across records

K7 (1)

Planets

Stable across source rows

Discovery

2024

Period

25.20 days

Radius

—

Mass

1144.2 M⊕

Eq. Temp

—

CI Tau: A Very Young Star With a Massive Minimum-Mass Planet

CI Tau is a K7 star located 515 light-years away. It is very young, with an age of 0.0025 billion years, and its mass is 0.9 solar masses, a figure smaller than the Sun's. One planet orbits this host.

That planet is CI Tau c, discovered in 2024 by the radial velocity method, which tracks the wobble a planet's gravity induces in its star's motion. Its minimum mass is 1140 Earth masses, a lower bound on its true mass and larger than Earth's. That minimum mass is roughly 3.6 times Jupiter's mass. CI Tau c completes an orbit in 25.2 days.

Evidence Summary

Rows

Stellar refs

System refs

Distancestable

3 values • 1 distinct

Parallaxstable

3 values • 1 distinct

Temperaturedisputed

2 values • 2 distinct

Massstable

1 values • 1 distinct

Radiusdisputed

2 values • 2 distinct

Agestable

1 values • 1 distinct

Luminositydisputed

2 values • 2 distinct

Spectral Typestable

1 values • 1 distinct

ST TEFF	ST MASS	ST RAD	ST AGE	ST LUM	ST SPECTYPE	SY DIST	Stellar Ref	System Ref
3807	—	1.68	—	—	—	158.0	TICv8	TICv8
3635	—	1.88	—	-0.25	—	158.0	Gaia DR2	TICv8
—	0.90	—	2.50e-3	-0.11	K7	158.0	Flagg et al. 2019	TICv8

CI Tau

Adopted host values from one source row

Known planets

CI Tau c

CI Tau: A Very Young Star With a Massive Minimum-Mass Planet

Underlying measurements and references