Stellar HostProfile

HD 217107

G8 IV • 20.06 pc

Records

literature rows

Planets

system count

References

distinct source labels

TIC: TIC 38271828HD: HD 217107HIP: HIP 113421

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

5646 K

5575 to 5704

10 values • 9 distinct

Mass

1.06 Msun

0.98 to 1.14

13 values • 11 distinct

Radius

1.14 Rsun

1.08 to 1.22

8 values • 7 distinct

Age

5.84 Gyr

4 to 15

5 values • 4 distinct

Luminosity

0.10 log(Lsun)

0.04 to 0.10

4 values • 4 distinct

Distance

20.06 pc

single adopted value

25 values • 1 distinct

Spectral Type

G8 IV

Multiple classifications reported

G8 IV (3), G (1), G5 (1), G8 IV-V (1), G8 IV/V (1), G8IV/V (1)

Planets

Stable across source rows

System Layout

Known planets

2 planets linked to this host

HD 217107 b

Radial Velocity

◌

Discovery

1998

Period

7.13 days

Radius

—

Mass

449.2 M⊕

Eq. Temp

—

HD 217107 c

Radial Velocity

◌

Discovery

2005

Period

5138.7 days

Radius

—

Mass

1388.9 M⊕

Eq. Temp

—

Provenance

Underlying measurements and references

Evidence Summary

Rows

Stellar refs

System refs

Distancestable

25 values • 1 distinct

Parallaxstable

25 values • 1 distinct

Temperaturedisputed

10 values • 9 distinct

Massdisputed

13 values • 11 distinct

Radiusdisputed

8 values • 7 distinct

Agedisputed

5 values • 4 distinct

Luminositydisputed

4 values • 4 distinct

Surface Gravitydisputed

9 values • 8 distinct

Metallicitydisputed

10 values • 7 distinct

Spectral Typedisputed

8 values • 6 distinct

ST TEFF	ST MASS	ST RAD	ST AGE	ST LUM	ST SPECTYPE	SY DIST	Stellar Ref	System Ref
5665	1.10	1.09	4	0.04	—	20.06	Ghezzi et al. 2010	TICv8
—	1.05	—	—	—	G8 IV	20.06	Vogt et al. 2005	TICv8
—	—	—	—	—	G8 IV	20.06	Baines et al. 2009	TICv8
5575	0.98	1.20	—	0.10	—	20.06	TICv8	TICv8
—	1.14	—	—	—	—	20.06	An et al. 2025	TICv8
—	—	—	—	—	—	20.06	Valenti & Fischer 2005	TICv8
—	—	—	—	—	—	20.06	Wright et al. 2004	TICv8
—	—	—	—	—	—	20.06	Nordstrom et al. 2004	TICv8
—	1.11	—	—	—	—	20.06	Bryan et al. 2016	TICv8
—	1.11	1.08	5.84	—	—	20.06	Takeda et al. 2007	TICv8
—	—	—	15	—	—	20.06	Sanz-Forcada et al. 2010	TICv8
—	—	—	—	—	G5	20.06	Cannon & Pickering 1918	TICv8
—	1.13	—	—	—	—	20.06	An et al. 2025	TICv8
5606.8	1.06	1.17	—	—	—	20.06	Rosenthal et al. 2021	TICv8
5704	1.11	1.08	5.84	0.09	G8IV/V	20.06	Turnbull 2015	TICv8
—	—	—	—	—	G8 IV-V	20.06	Gray et al. 2003	TICv8
5680	—	—	—	—	—	20.06	Maldonado et al. 2015	TICv8
5646	1.02	—	—	—	G8 IV	20.06	Wittenmyer et al. 2007	TICv8
—	1.04	1.22	11.90	—	G	20.06	Giovinazzi et al. 2025	TICv8
5622	1	1.11	—	—	—	20.06	Stassun et al. 2017	TICv8
—	—	—	—	—	—	20.06	Nidever et al. 2002	TICv8
5646	1.02	—	—	—	—	20.06	Santos et al. 2004	TICv8
5630	—	1.18	—	0.10	—	20.06	Gaia DR2	TICv8
—	—	—	—	—	G8 IV/V	20.06	Michigan Catalog, Vol. 5	TICv8
5679	—	—	—	—	—	20.06	Suárez-Andrés et al. 2016	TICv8