Temperature
5750 K
5517.7 to 5754
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Stellar HostProfile
XO-1
G1 V • 163.6 pc
Records
13
literature rows
Planets
1
system count
References
14
distinct source labels
TIC: TIC 236312126
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. 2006 • System source: TICv8
Mass
1 Msun
0.88 to 1.04
Radius
1 Rsun
0.82 to 1
Age
4.74 Gyr
0.90 to 4.74
Distance
163.6 pc
single adopted value
Spectral Type
G1 V
Consistent across records
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 1 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
XO-1
1 R☉
System Layout
Known planets
1 planets linked to this host
XO-1 b
Transit
◌
Discovery
2006
Period
3.94 days
Radius
12.78 R⊕
Mass
263.8 M⊕
Eq. Temp
—
XO-1 and Its Jupiter-Like Planet
XO-1 is a G1 V star located 533 light-years away. This Sun-like dwarf has a mass of 1 solar masses, a radius of 1 solar radii, and a temperature of 5750 K, which is cooler than the Sun's. It is 4.74 billion years old. One planet orbits this host.
That planet, XO-1 b, is a Jupiter-like world discovered by transit in 2006. Its radius of 12.8 Earth radii places it well above the Jupiter-like threshold of four times Earth's radius, making its reported radius estimate larger than Earth's. It completes an orbit every 3.94 days.
XO-1 b has a mass of 264 Earth masses, also larger than Earth's, and a mean density of 0.697 g/cm³, which is 0.126 times Earth's.
Provenance
Underlying measurements and references
Evidence Summary
Rows
13
Stellar refs
13
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 |
|---|---|---|---|---|---|---|---|---|
| 5729 | — | 0.92 | — | — | — | 163.6 | ExoFOP | TICv8 |
| 5750 | — | — | — | — | — | 163.6 | Caceres et al. 2009 | TICv8 |
| 5750 | 0.88 | 0.88 | — | — | — | 163.6 | Stassun et al. 2017 | TICv8 |
| 5750 | 1.03 | 0.93 | 1 | — | — | 163.6 | Bonomo et al. 2017 | TICv8 |
| 5729 | 1.02 | 0.92 | — | -0.09 | — | 163.6 | TICv8 | TICv8 |
| 5750 | 1.04 | 0.94 | 0.90 | — | — | 163.6 | Southworth 2010 | TICv8 |
| 5750 | 1.03 | 0.94 | — | — | — | 163.6 | Burke et al. 2010 | TICv8 |
| 5517.7 | — | 0.99 | — | -0.09 | — | 163.6 | Gaia DR2 | TICv8 |
| — | — | 1 | — | — | — | 163.6 | Wilson et al. 2006 | TICv8 |
| 5750 | 1 | 1 | 4.74 | — | G1 V | 163.6 | McCullough et al. 2006 | TICv8 |
| 5754 | 0.93 | 0.82 | — | — | — | 163.6 | Mortier et al. 2013 | TICv8 |
| — | 1 | 0.93 | — | — | — | 163.6 | Holman et al. 2006 | TICv8 |
| — | — | — | — | -0.07 | — | 163.6 | Torres et al. 2008 | TICv8 |