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Stellar HostProfile

HD 217107

G8 IV • 20.06 pc

Records

25

literature rows

Planets

2

system count

References

25

distinct source labels

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

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

2

Stable across source rows

2

Scale Comparison

Radius against the Sun

Current adopted radius: 1.14 R☉ • circles scaled linearly by radius

Sun

1.0 R☉ baseline

HD 217107

1.14 R☉

System Layout

Known planets

2 planets linked to this host

HD 217107 b

Radial Velocity

◌

Discovery

1998

Period

7.13 days

Radius

—

Mass

440.2 M⊕

Eq. Temp

—

HD 217107 c

Radial Velocity

◌

Discovery

2005

Period

5141 days

Radius

—

Mass

1369.8 M⊕

Eq. Temp

—

Provenance

Underlying measurements and references

Evidence Summary

Rows

25

Stellar refs

24

System refs

1

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 TEFFST MASSST RADST AGEST LUMST SPECTYPESY DISTStellar RefSystem Ref
5606.81.061.17———20.06Rosenthal et al. 2021TICv8
—————G8 IV-V20.06Gray et al. 2003TICv8
—————G520.06Cannon & Pickering 1918TICv8
—1.14————20.06An et al. 2025TICv8
——————20.06Nordstrom et al. 2004TICv8
56461.02———G8 IV20.06Wittenmyer et al. 2007TICv8
5630—1.18—0.10—20.06Gaia DR2TICv8
56461.02————20.06Santos et al. 2004TICv8
—1.13————20.06An et al. 2025TICv8
56651.101.0940.04—20.06Ghezzi et al. 2010TICv8
—1.05———G8 IV20.06Vogt et al. 2005TICv8
—————G8 IV/V20.06Michigan Catalog, Vol. 5TICv8
—1.041.2211.90—G20.06Giovinazzi et al. 2025TICv8
—————G8 IV20.06Baines et al. 2009TICv8
—1.11————20.06Bryan et al. 2016TICv8
562211.11———20.06Stassun et al. 2017TICv8
——————20.06Nidever et al. 2002TICv8
55750.981.20—0.10—20.06TICv8TICv8
——————20.06Wright et al. 2004TICv8
5679—————20.06Suárez-Andrés et al. 2016TICv8
—1.111.085.84——20.06Takeda et al. 2007TICv8
57041.111.085.840.09G8IV/V20.06Turnbull 2015TICv8
——————20.06Valenti & Fischer 2005TICv8
———15——20.06Sanz-Forcada et al. 2010TICv8
5680—————20.06Maldonado et al. 2015TICv8