Temperature
5332 K
5167.9 to 5350
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Stellar HostProfile
XO-2 N
Unclassified star • 154.3 pc
Records
18
literature rows
Planets
4
system count
References
19
distinct source labels
TIC: TIC 356473034
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: Damasso et al. 2015 • System source: TICv8
Mass
0.97 Msun
0.90 to 1.08
Radius
1.01 Rsun
0.96 to 1.48
Age
7.90 Gyr
1.90 to 7.90
Luminosity
-0.15 log(Lsun)
-0.16 to -0.09
Distance
154.3 pc
single adopted value
Planets
4
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 1.01 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
XO-2 N
1.01 R☉
System Layout
Known planets
1 planets linked to this host
XO-2 N b
Transit
◌
Discovery
2007
Period
2.62 days
Radius
—
Mass
188.8 M⊕
Eq. Temp
—
XO-2 N and Its Transiting Planet
XO-2 N is a G8 V star located 503 light-years away. Such a spectral type marks a main-sequence dwarf, and this one is cooler than the Sun at a temperature of 5330 K. Its other measured properties include an age of 7.9 billion years, a mass of 0.97 solar masses, and a radius of 1.01 solar radii. One known planet orbits this host.
That planet is XO-2 N b, discovered by the transit method in 2007, when it was detected as it passed in front of its star and dimmed its light slightly. It circles its star every 2.62 days. Its minimum mass is 189 Earth masses, meaning the true mass is at least this large, and its minimum mass is larger than Earth's.
Provenance
Underlying measurements and references
Evidence Summary
Rows
18
Stellar refs
18
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Agedisputed
Luminositydisputed
Surface Gravitydisputed
Metallicitydisputed
Spectral Typedisputed
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| 5267 | — | 1.08 | — | — | — | 154.3 | ExoFOP | TICv8 |
| 5340 | 0.92 | 0.96 | 6.50 | — | — | 154.3 | Southworth 2012 | TICv8 |
| 5340 | 0.95 | 0.97 | 1.90 | — | — | 154.3 | Southworth 2010 | TICv8 |
| 5343 | — | — | — | — | — | 154.3 | Teske et al. 2013 | TICv8 |
| 5332 | 0.96 | 1.00 | 7.80 | — | — | 154.3 | Bonomo et al. 2017 | TICv8 |
| 5267 | 0.90 | 1.08 | — | -0.09 | — | 154.3 | TICv8 | TICv8 |
| 5167.9 | — | 1.10 | — | -0.11 | — | 154.3 | Gaia DR2 | TICv8 |
| — | 0.98 | — | — | — | — | 154.3 | Knutson et al. 2014 | TICv8 |
| 5290 | 0.96 | 1.00 | — | — | G8 V | 154.3 | Ruggieri et al. 2024 | TICv8 |
| 5332 | 0.97 | 1.01 | 7.90 | -0.15 | — | 154.3 | Damasso et al. 2015 | TICv8 |
| 5350 | 1.08 | 1.48 | — | — | — | 154.3 | Mortier et al. 2013 | TICv8 |
| 5340 | — | — | — | -0.16 | — | 154.3 | Torres et al. 2008 | TICv8 |
| 5340 | — | — | — | — | — | 154.3 | Yalçınkaya et al. 2024 | TICv8 |
| 5343 | — | 0.96 | — | — | — | 154.3 | Zellem et al. 2015 | TICv8 |
| — | — | — | — | — | K0 V | 154.3 | Burke et al. 2007 | TICv8 |
| 5307 | — | — | — | — | — | 154.3 | Ramírez et al. 2015 | TICv8 |
| — | 0.97 | 0.99 | — | — | — | 154.3 | Crouzet et al. 2012 | TICv8 |
| — | 0.97 | 0.98 | — | — | — | 154.3 | Fernandez et al. 2009 | TICv8 |