Stellar HostProfile

tau Cet

G8 V • 3.60 pc

Records

literature rows

Planets

system count

References

distinct source labels

HD: HD 10700TIC: TIC 419015728HIP: HIP 8102

Approximate color

from effective temperature

Canonical Summary

Adopted host values from all rows

Numeric fields use the median of non-null measurements. Disagreement stays visible through ranges, counts, and provenance.

Temperature

5321.5 K

5283 to 5375

4 values • 4 distinct

Mass

0.80 Msun

0.63 to 0.92

5 values • 5 distinct

Radius

0.83 Rsun

0.83 to 0.86

4 values • 3 distinct

Age

12.12 Gyr

single adopted value

1 values • 1 distinct

Luminosity

-0.29 log(Lsun)

-0.31 to -0.25

4 values • 4 distinct

Distance

3.60 pc

single adopted value

34 values • 1 distinct

Spectral Type

G8 V

Multiple classifications reported

G8 V (2), G8.5 V (1), G8.5V (1), K0 (1)

Planets

Stable across source rows

System Layout

Known planets

4 planets linked to this host

tau Cet e

Radial Velocity

◌

Discovery

2017

Period

162.9 days

Radius

—

Mass

3.93 M⊕

Eq. Temp

—

tau Cet g

Radial Velocity

◌

Discovery

2017

Period

20 days

Radius

—

Mass

1.75 M⊕

Eq. Temp

—

tau Cet f

Radial Velocity

◌

Discovery

2017

Period

636.1 days

Radius

—

Mass

3.93 M⊕

Eq. Temp

—

tau Cet h

Radial Velocity

◌

Discovery

2017

Period

49.41 days

Radius

—

Mass

1.83 M⊕

Eq. Temp

—

Provenance

Underlying measurements and references

Evidence Summary

Rows

Stellar refs

System refs

Distancestable

34 values • 1 distinct

Parallaxstable

34 values • 1 distinct

Temperaturedisputed

4 values • 4 distinct

Massdisputed

5 values • 5 distinct

Radiusdisputed

4 values • 3 distinct

Agestable

1 values • 1 distinct

Luminositydisputed

4 values • 4 distinct

Surface Gravitydisputed

4 values • 3 distinct

Metallicitydisputed

3 values • 2 distinct

Spectral Typedisputed

5 values • 4 distinct

ST TEFF	ST MASS	ST RAD	ST AGE	ST LUM	ST SPECTYPE	SY DIST	Stellar Ref	System Ref
—	—	—	—	—	—	3.60	Pizzolato et al. 2003	TICv8
—	—	—	—	—	—	3.60	Duncan et al. 1991	TICv8
—	—	—	—	—	—	3.60	Valenti & Fischer 2005	TICv8
—	—	—	—	—	—	3.60	Nordstrom et al. 2004	TICv8
5283	0.80	0.83	—	-0.28	G8.5V	3.60	Turnbull 2015	TICv8
—	—	—	—	—	—	3.60	Wright et al. 2004	TICv8
—	—	—	—	—	—	3.60	Duncan et al. 1991	TICv8
—	—	—	—	—	—	3.60	Henry et al. 1996	TICv8
—	—	—	—	—	—	3.60	Duncan et al. 1991	TICv8
—	—	—	—	—	G8 V	3.60	Garrison & Beattie 1998	TICv8
—	—	—	—	—	—	3.60	Reiners & Schmitt 2003a	TICv8
—	—	—	—	—	—	3.60	Henry et al. 1996	TICv8
5375	—	0.86	—	-0.25	—	3.60	Gaia DR2	TICv8
—	—	—	—	—	K0	3.60	Cannon & Pickering 1918	TICv8
—	0.78	—	—	—	—	3.60	Feng et al. 2017	TICv8
5333	0.92	0.83	—	-0.30	—	3.60	TICv8	TICv8
—	—	—	—	—	—	3.60	Duncan et al. 1991	TICv8
—	—	—	—	—	—	3.60	Duncan et al. 1991	TICv8
—	—	—	—	—	—	3.60	Duncan et al. 1991	TICv8
—	—	—	—	—	G8 V	3.60	Michigan Catalog, Vol. 4	TICv8
5310	0.63	—	—	-0.31	—	3.60	Sousa et al. 2008	TICv8
—	—	—	—	—	—	3.60	Duncan et al. 1991	TICv8
—	—	—	—	—	—	3.60	Duncan et al. 1991	TICv8
—	—	—	—	—	G8.5 V	3.60	Gray et al. 2006	TICv8
—	—	—	—	—	—	3.60	Duncan et al. 1991	TICv8
—	—	—	—	—	—	3.60	Duncan et al. 1991	TICv8
—	—	—	—	—	—	3.60	Duncan et al. 1991	TICv8
—	—	—	—	—	—	3.60	Duncan et al. 1991	TICv8
—	—	—	—	—	—	3.60	Duncan et al. 1991	TICv8
—	—	—	—	—	—	3.60	Duncan et al. 1991	TICv8
—	—	—	—	—	—	3.60	Nidever et al. 2002	TICv8
—	0.80	0.83	12.12	—	—	3.60	Takeda et al. 2007	TICv8
—	—	—	—	—	—	3.60	Duncan et al. 1991	TICv8
—	—	—	—	—	—	3.60	Duncan et al. 1991	TICv8