Temperature
5700 K
5700 to 6526.7
←Back to Stellar Hosts
Stellar HostProfile
XO-4
F5 V • 272.7 pc
Records
10
literature rows
Planets
1
system count
References
11
distinct source labels
TIC: TIC 51234631
Approximate color
from effective temperature
Canonical Summary
Adopted host values from one source row
Values come from the row with the most populated summary measurements. Missing values stay missing. Ranges and counts describe all source rows.
Stellar source: McCullough et al. 2008 • System source: TICv8
Mass
1.32 Msun
1.10 to 1.32
Radius
1.55 Rsun
1.45 to 1.62
Age
2.10 Gyr
2.10 to 2.70
Distance
272.7 pc
single adopted value
Spectral Type
F5 V
Consistent across records
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 1.55 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
XO-4
1.55 R☉
System Layout
Known planets
1 planets linked to this host
XO-4 b
Transit
◌
Discovery
2010
Period
4.13 days
Radius
14.01 R⊕
Mass
451.3 M⊕
Eq. Temp
—
XO-4 and Its Lone Planet
XO-4 is an F5 V star, a main-sequence dwarf, located 889 light-years away. It is 2.1 billion years old and has a mass of 1.32 solar masses, a radius of 1.55 solar radii, and a temperature of 5700 K. Its reported mass and radius estimates are larger than the Sun's, while its temperature is cooler. One planet orbits this star.
That planet, XO-4 b, is a Jupiter-like world discovered by transit in 2010. It completes an orbit in 4.13 days. Its radius is 14 Earth radii, larger than Earth's, and its mass is 451 Earth masses, also larger than Earth's and roughly 1.42 times Jupiter's mass. Its mean density is 0.904 g/cm³, 0.164 times Earth's.
Provenance
Underlying measurements and references
Evidence Summary
Rows
10
Stellar refs
10
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Agedisputed
Luminositydisputed
Surface Gravitydisputed
Metallicitydisputed
Spectral Typestable
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| — | 1.32 | — | — | — | — | 272.7 | Knutson et al. 2014 | TICv8 |
| 6526.7 | — | 1.45 | — | 0.54 | — | 272.7 | Gaia DR2 | TICv8 |
| 6304 | — | 1.62 | — | — | — | 272.7 | ExoFOP | TICv8 |
| — | — | — | — | — | — | 272.7 | Narita et al. 2010 | TICv8 |
| 6304 | 1.24 | 1.62 | — | 0.57 | — | 272.7 | TICv8 | TICv8 |
| 6397 | 1.28 | 1.53 | 2.70 | — | — | 272.7 | Southworth 2011 | TICv8 |
| 6397 | 1.10 | 1.45 | — | — | — | 272.7 | Stassun et al. 2017 | TICv8 |
| 5700 | 1.32 | 1.55 | 2.10 | — | F5 V | 272.7 | McCullough et al. 2008 | TICv8 |
| 6400 | 1.32 | 1.56 | 2.10 | — | — | 272.7 | Bonomo et al. 2017 | TICv8 |
| 6397 | 1.28 | 1.53 | 2.70 | — | — | 272.7 | Southworth 2010 | TICv8 |