Stellar HostProfile

WASP-177

K2 • 176.8 pc

Records

literature rows

Planets

system count

References

distinct source labels

TIC: TIC 439842788

Approximate color

from effective temperature

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

Temperature

5017 K

4970.9 to 5082

4 values • 3 distinct

Mass

0.88 Msun

0.85 to 0.88

2 values • 2 distinct

Radius

0.89 Rsun

0.84 to 0.89

4 values • 3 distinct

Age

9.70 Gyr

single adopted value

1 values • 1 distinct

Distance

176.8 pc

single adopted value

4 values • 1 distinct

Spectral Type

Consistent across records

K2 (1)

Planets

Stable across source rows

Sun

1.0 R☉ baseline

WASP-177

0.89 R☉

Discovery

2019

Period

3.07 days

Radius

17.71 R⊕

Mass

161.5 M⊕

Eq. Temp

1142 K

WASP-177 b: A Jupiter-like World in a Distant System

WASP-177 is a K2 star located 577 light-years away. It has a mass of 0.876 solar masses and a radius of 0.885 solar radii, making it both less massive and smaller than the Sun. Its temperature is 5020 K, cooler than the Sun's. The star is estimated to be 9.7 billion years old. One planet is known to orbit this host.

That planet is WASP-177 b, a Jupiter-like world discovered in 2019 by the transit method, in which a planet passing in front of its star causes a small dip in observed brightness. It completes an orbit every 3.07 days and has a radius of 17.7 Earth radii, larger than Earth's. Its mass is 161 Earth masses, also greater than Earth's. Its mean density is 0.16 g/cm³, which is 0.0291 times Earth's.

Evidence Summary

Rows

Stellar refs

System refs

Distancestable

4 values • 1 distinct

Parallaxstable

4 values • 1 distinct

Temperaturedisputed

4 values • 3 distinct

Massdisputed

2 values • 2 distinct

Radiusdisputed

4 values • 3 distinct

Agestable

1 values • 1 distinct

Luminositydisputed

2 values • 2 distinct

Surface Gravitydisputed

3 values • 2 distinct

Metallicitystable

1 values • 1 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
5082	—	0.85	—	—	—	176.8	ExoFOP	TICv8
5017	0.88	0.89	9.70	—	K2	176.8	Turner et al. 2019	TICv8
4970.9	—	0.84	—	-0.41	—	176.8	Gaia DR2	TICv8
5082	0.85	0.85	—	-0.36	—	176.8	TICv8	TICv8

WASP-177

Adopted host values from one source row

Radius against the Sun

Known planets

WASP-177 b

WASP-177 b: A Jupiter-like World in a Distant System

Underlying measurements and references