Temperature
4395 K
4330 to 4428
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Stellar HostProfile
gam1 Leo
Unclassified star • 39.89 pc
Records
6
literature rows
Planets
1
system count
References
7
distinct source labels
HIP: HIP 50583 ATIC: TIC 95431294HD: HD 89484
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: Sousa et al. 2015 • System source: TICv8
Mass
1.46 Msun
1.23 to 1.57
Radius
28.39 Rsun
28.39 to 31.88
Age
2.41 Gyr
single adopted value
Distance
39.89 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 28.39 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
gam1 Leo
28.39 R☉
System Layout
Known planets
1 planets linked to this host
gam1 Leo b
Radial Velocity
◌
Discovery
2009
Period
428.5 days
Radius
—
Mass
2790.4 M⊕
Eq. Temp
—
gam1 Leo and Its Planet
gam1 Leo is a binary star system 130 light-years away. Its host star has spectral type K0 and is 2.41 billion years old. The star's reported mass estimate is 1.46 solar masses, larger than the Sun's, and its reported radius estimate is 28.4 solar radii, also larger than the Sun's. Its temperature is 4400 K, cooler than the Sun's.
One planet is known to orbit this host. gam1 Leo b was discovered in 2009 by the radial velocity method, which measures the wobble a planet's gravity induces in its star's motion. Its minimum mass is 2790 Earth masses, a lower bound on its true mass and larger than Earth's, or roughly 8.78 times Jupiter's mass. The planet completes an orbit in 429 days.
Provenance
Underlying measurements and references
Evidence Summary
Rows
6
Stellar refs
6
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Agestable
Surface Gravitydisputed
Metallicitydisputed
Spectral Typedisputed
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| — | — | — | — | — | K1 IIIb Fe-0.5 | 39.89 | Garrison & Beattie 1998 | TICv8 |
| 4366.4 | — | — | — | — | — | 39.89 | TICv8 | TICv8 |
| — | — | — | — | — | K0 | 39.89 | Cannon & Pickering 1918 | TICv8 |
| 4428 | 1.57 | — | — | — | — | 39.89 | Mortier et al. 2013 | TICv8 |
| 4395 | 1.46 | 28.39 | 2.41 | — | — | 39.89 | Sousa et al. 2015 | TICv8 |
| 4330 | 1.23 | 31.88 | — | — | — | 39.89 | Han et al. 2010 | TICv8 |