Stellar HostProfile

Ross 458

Unclassified star • 11.51 pc

Records

literature rows

Planets

system count

References

distinct source labels

HIP: HIP 63510TIC: TIC 88138162

Approximate color

from effective temperature

Stellar source: TICv8 • System source: TICv8

Temperature

3646 K

3621 to 3965.4

3 values • 3 distinct

Mass

0.56 Msun

0.49 to 0.56

2 values • 2 distinct

Radius

0.56 Rsun

0.56 to 0.63

2 values • 2 distinct

Luminosity

-1.30 log(Lsun)

-1.30 to -1.22

2 values • 2 distinct

Distance

11.51 pc

single adopted value

8 values • 1 distinct

Planets

Stable across source rows

Sun

1.0 R☉ baseline

Ross 458

0.56 R☉

Discovery

2010

Period

—

Radius

14.01 R⊕

Mass

1907.0 M⊕

Eq. Temp

—

Ross 458 c: A Circumbinary Giant Around a Cool Red Dwarf

Ross 458 is a binary star system 37.5 light-years away, and its listed planets number one. The host star is an M0.5 dwarf, a small, cool red dwarf with a reported mass of 0.556 solar masses and a radius of 0.563 solar radii. Its temperature is 3650 K. This star's mass and radius are both smaller than the Sun's, and its temperature is cooler.

The sole planet orbiting this host is Ross 458 c, a Jupiter-like planet discovered by imaging in 2010. It is circumbinary, meaning it orbits both stars of the binary system rather than one star alone. Ross 458 c has a reported mass of 1910 Earth masses and a radius of 14 Earth radii. Both its mass and radius are larger than Earth's, and its mass is roughly 6 times Jupiter's. Its mean density is 3.82 g/cm³, 0.693 times Earth's. No orbital period is reported for Ross 458 c.

Evidence Summary

Rows

Stellar refs

System refs

Distancestable

8 values • 1 distinct

Parallaxstable

8 values • 1 distinct

Temperaturedisputed

3 values • 3 distinct

Massdisputed

2 values • 2 distinct

Radiusdisputed

2 values • 2 distinct

Agestable

1 values • 1 distinct

Luminositydisputed

2 values • 2 distinct

Surface Gravitystable

1 values • 1 distinct

Spectral Typedisputed

2 values • 2 distinct

ST TEFF	ST MASS	ST RAD	ST AGE	ST LUM	ST SPECTYPE	SY DIST	Stellar Ref	System Ref
—	—	—	—	—	—	11.51	Nidever et al. 2002	TICv8
3621	0.49	0.63	—	-1.22	M2	11.51	Turnbull 2015	TICv8
—	—	—	0.50	—	—	11.51	Burgasser et al. 2010	TICv8
—	—	—	—	—	—	11.51	Pizzolato et al. 2003	TICv8
—	—	—	—	—	M0.5	11.51	Hawley et al. 1996	TICv8
—	—	—	—	—	—	11.51	Duncan et al. 1991	TICv8
3965.4	—	—	—	—	—	11.51	Gaia DR2	TICv8
3646	0.56	0.56	—	-1.30	—	11.51	TICv8	TICv8

Ross 458

Adopted host values from one source row

Radius against the Sun

Known planets

Ross 458 c

Ross 458 c: A Circumbinary Giant Around a Cool Red Dwarf

Underlying measurements and references