Temperature
5542 K
5532.4 to 5582
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Stellar HostProfile
HD 100777
Unclassified star • 49.53 pc
Records
9
literature rows
Planets
1
system count
References
10
distinct source labels
HIP: HIP 56572HD: HD 100777TIC: TIC 49427341
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: Ghezzi et al. 2010 • System source: TICv8
Mass
1 Msun
0.83 to 1.08
Radius
1.03 Rsun
1.03 to 1.06
Age
5 Gyr
2 to 5.70
Luminosity
-0.05 log(Lsun)
-0.05 to 0.02
Distance
49.53 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 1.03 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
HD 100777
1.03 R☉
System Layout
Known planets
1 planets linked to this host
HD 100777 b
Radial Velocity
◌
Discovery
2007
Period
383 days
Radius
—
Mass
390.9 M⊕
Eq. Temp
—
HD 100777 and Its Single Known Planet
HD 100777 is a star located 162 light-years away. Its spectral type is G8 V, and the star is 5 billion years old, with a mass of 1 solar masses and a radius of 1.03 solar radii. Its temperature of 5540 K is cooler than the Sun's.
One planet is known to orbit this star. HD 100777 b was discovered in 2007 by the radial velocity method, which measures the wobble a planet's gravity induces in its star's motion. The planet has a mass of 391 Earth masses, larger than Earth's and roughly 1.23 times Jupiter's mass, and it completes one orbit every 383 days.
Provenance
Underlying measurements and references
Evidence Summary
Rows
9
Stellar refs
9
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 |
|---|---|---|---|---|---|---|---|---|
| — | 1.08 | — | 5.70 | — | G8 V | 49.53 | Philipot et al. 2023 | TICv8 |
| 5536 | 0.94 | — | — | 0.02 | — | 49.53 | Sousa et al. 2008 | TICv8 |
| 5532.9 | 0.97 | 1.06 | — | -0.03 | — | 49.53 | TICv8 | TICv8 |
| 5533 | 0.83 | 1.04 | — | — | — | 49.53 | Stassun et al. 2017 | TICv8 |
| 5582 | 1.01 | — | 2 | 0.02 | — | 49.53 | Naef et al. 2007 | TICv8 |
| — | — | — | — | — | G8 V | 49.53 | Michigan Catalog, Vol. 5 | TICv8 |
| 5542 | 1 | 1.03 | 5 | -0.05 | — | 49.53 | Ghezzi et al. 2010 | TICv8 |
| 5532.4 | — | 1.06 | — | -0.02 | — | 49.53 | Gaia DR2 | TICv8 |
| — | — | — | — | — | K0 | 49.53 | Cannon & Pickering 1918 | TICv8 |