Temperature
3652 K
3552 to 3775.5
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Stellar HostProfile
GJ 3470
M1.5 • 29.42 pc
Records
10
literature rows
Planets
1
system count
References
11
distinct source labels
TIC: TIC 19028197
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: Kosiarek et al. 2019 • System source: TICv8
Mass
0.51 Msun
0.50 to 0.56
Radius
0.48 Rsun
0.48 to 0.57
Age
1.65 Gyr
1.65 to 2.50
Luminosity
-1.54 log(Lsun)
-1.54 to -1.45
Distance
29.42 pc
single adopted value
Spectral Type
M1.5
Consistent across records
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.48 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
GJ 3470
0.48 R☉
System Layout
Known planets
1 planets linked to this host
GJ 3470 b
Radial Velocity
◌
Discovery
2012
Period
3.34 days
Radius
4.57 R⊕
Mass
13.90 M⊕
Eq. Temp
593.5 K
GJ 3470 b: A Massive Planet Around a Small Red Dwarf
GJ 3470 is an M1.5 star located 96 light-years away. Its spectral type places it among the small, cool red dwarfs. The star has a mass of 0.51 solar masses, a radius of 0.48 solar radii, and a temperature of 3650 K. Its reported mass and radius are both smaller than the Sun's, and its temperature is cooler than the Sun's. GJ 3470 is 1.65 billion years old. One planet orbits this host.
That planet, GJ 3470 b, was discovered in 2012 by the radial velocity method, which detects the wobble a planet's gravity induces in its star's motion. It is a Jupiter-like planet, a class defined by a radius exceeding 4 times Earth's. GJ 3470 b has a radius of 4.57 Earth radii, larger than Earth's, and a mass of 13.9 Earth masses, also larger than Earth's. Its mean density is 0.802 g/cm³, 0.146 times Earth's. The planet completes an orbit every 3.34 days.
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 |
|---|---|---|---|---|---|---|---|---|
| 3600 | 0.54 | 0.57 | — | — | — | 29.42 | Demory et al. 2013 | TICv8 |
| — | — | — | — | — | M1.5 | 29.42 | Hawley et al. 1996 | TICv8 |
| 3652 | 0.51 | 0.48 | 2.50 | — | — | 29.42 | Biddle et al. 2014 | TICv8 |
| 3600 | 0.54 | 0.55 | — | — | — | 29.42 | Awiphan et al. 2016 | TICv8 |
| 3652 | 0.51 | 0.48 | 1.65 | -1.54 | M1.5 | 29.42 | Kosiarek et al. 2019 | TICv8 |
| 3552 | 0.50 | 0.50 | — | -1.45 | — | 29.42 | TICv8 | TICv8 |
| 3775.5 | — | — | — | — | — | 29.42 | Gaia DR2 | TICv8 |
| 3552 | — | 0.50 | — | — | — | 29.42 | ExoFOP | TICv8 |
| — | 0.56 | 0.53 | — | — | — | 29.42 | Fukui et al. 2013 | TICv8 |
| 3600 | 0.54 | 0.50 | 1.65 | -1.54 | M1.5 | 29.42 | Bonfils et al. 2012 | TICv8 |