Stellar HostProfile

HN Peg

G0V • 18.12 pc

Records

literature rows

Planets

system count

References

distinct source labels

TIC: TIC 301880196HIP: HIP 107350HD: HD 206860

Approximate color

from effective temperature

Stellar source: Turnbull 2015 • System source: TICv8

Temperature

5974 K

5927.1 to 6186

4 values • 4 distinct

Mass

1.10 Msun

1.08 to 1.10

2 values • 2 distinct

Radius

1.04 Rsun

1.01 to 1.04

3 values • 3 distinct

Age

3.10 Gyr

0.30 to 3.10

2 values • 2 distinct

Luminosity

0.07 log(Lsun)

0.06 to 0.07

3 values • 3 distinct

Distance

18.12 pc

single adopted value

32 values • 1 distinct

Spectral Type

G0V

Multiple classifications reported

G0 (1), G0 IV-V (1), G0 V (1), G0 V CH-0.5 (1), G0V (1)

Planets

Stable across source rows

Sun

1.0 R☉ baseline

HN Peg

1.04 R☉

Discovery

2006

Period

—

Radius

11.78 R⊕

Mass

6991.6 M⊕

Eq. Temp

—

HN Peg and Its Jupiter-Like Planet

HN Peg is a G0V star located 59.1 light-years away. Its spectral type marks it as a Sun-like, main-sequence dwarf. The star is estimated to be 3.1 billion years old, with a mass of 1.1 solar masses and a radius of 1.04 solar radii. Its temperature is 5970 K. One planet orbits this host: HN Peg b.

HN Peg b is a Jupiter-like planet, a class that exceeds 4 times Earth's radius. It was discovered in 2006 by imaging. Its reported mass estimate is 6990 Earth masses, roughly 22 times Jupiter's mass, and its radius estimate is 11.8 Earth radii. No orbital period is reported for HN Peg b. Its mean density is 23.6 g/cm³, 4.28 times Earth's.

Evidence Summary

Rows

Stellar refs

System refs

Distancestable

32 values • 1 distinct

Parallaxstable

32 values • 1 distinct

Temperaturedisputed

4 values • 4 distinct

Massdisputed

2 values • 2 distinct

Radiusdisputed

3 values • 3 distinct

Agedisputed

2 values • 2 distinct

Luminositydisputed

3 values • 3 distinct

Surface Gravitydisputed

3 values • 2 distinct

Metallicitydisputed

3 values • 3 distinct

Spectral Typedisputed

5 values • 5 distinct

ST TEFF	ST MASS	ST RAD	ST AGE	ST LUM	ST SPECTYPE	SY DIST	Stellar Ref	System Ref
5927.1	1.08	1.01	—	0.06	—	18.12	TICv8	TICv8
—	—	—	—	—	—	18.12	Nordstrom et al. 2004	TICv8
—	—	—	—	—	—	18.12	Duncan et al. 1991	TICv8
—	—	—	—	—	—	18.12	Duncan et al. 1991	TICv8
—	—	—	—	—	—	18.12	Duncan et al. 1991	TICv8
—	—	—	—	—	—	18.12	Duncan et al. 1991	TICv8
—	—	—	—	—	—	18.12	Pizzolato et al. 2003	TICv8
—	—	—	0.30	—	G0 V	18.12	Luhman et al. 2007	TICv8
5974	1.10	1.04	3.10	0.07	G0V	18.12	Turnbull 2015	TICv8
—	—	—	—	—	—	18.12	Duncan et al. 1991	TICv8
—	—	—	—	—	—	18.12	Valenti & Fischer 2005	TICv8
—	—	—	—	—	—	18.12	Duncan et al. 1991	TICv8
—	—	—	—	—	—	18.12	Duncan et al. 1991	TICv8
—	—	—	—	—	—	18.12	Duncan et al. 1991	TICv8
6186	—	—	—	—	—	18.12	Swastik et al. 2021	TICv8
—	—	—	—	—	—	18.12	Duncan et al. 1991	TICv8
—	—	—	—	—	—	18.12	Nidever et al. 2002	TICv8
—	—	—	—	—	—	18.12	Duncan et al. 1991	TICv8
—	—	—	—	—	G0 V CH-0.5	18.12	Gray et al. 2006	TICv8
—	—	—	—	—	G0	18.12	Cannon & Pickering 1918	TICv8
—	—	—	—	—	—	18.12	Duncan et al. 1991	TICv8
—	—	—	—	—	—	18.12	Duncan et al. 1991	TICv8
5955	—	1.01	—	0.06	—	18.12	Gaia DR2	TICv8
—	—	—	—	—	G0 IV-V	18.12	Gray et al. 2003	TICv8
—	—	—	—	—	—	18.12	Duncan et al. 1991	TICv8
—	—	—	—	—	—	18.12	Henry et al. 1996	TICv8
—	—	—	—	—	—	18.12	Duncan et al. 1991	TICv8
—	—	—	—	—	—	18.12	Duncan et al. 1991	TICv8
—	—	—	—	—	—	18.12	Reiners & Schmitt 2003a	TICv8
—	—	—	—	—	—	18.12	Duncan et al. 1991	TICv8
—	—	—	—	—	—	18.12	Duncan et al. 1991	TICv8
—	—	—	—	—	—	18.12	Duncan et al. 1991	TICv8

HN Peg

Adopted host values from one source row

Radius against the Sun

Known planets

HN Peg b

HN Peg and Its Jupiter-Like Planet

Underlying measurements and references