Temperature
4393 K
4360.7 to 4445
โBack to Stellar Hosts
Stellar HostProfile
HD 1690
K1 III โข 752.6 pc
Records
9
literature rows
Planets
1
system count
References
10
distinct source labels
TIC: TIC 37763102HIP: HIP 1692HD: HD 1690
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: Moutou et al. 2011 โข System source: TICv8
Mass
1.09 Msun
1.02 to 1.86
Radius
16.70 Rsun
16.70 to 24.30
Age
6.70 Gyr
6.70 to 8.37
Luminosity
1.52 log(Lsun)
1.52 to 2.26
Distance
752.6 pc
single adopted value
Spectral Type
K1 III
Multiple classifications reported
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 16.70 Rโ (circles scaled linearly by radius)
Sun
1.0 Rโ baseline
HD 1690
16.70 Rโ
System Layout
Known planets
1 planets linked to this host
HD 1690 b
Radial Velocity
โ
Discovery
2010
Period
533 days
Radius
โ
Mass
2793.7 Mโ
Eq. Temp
โ
HD 1690 and Its Planet
HD 1690 is a K1 III star 2450 light-years from Earth. It is 6.7 billion years old and has 1.09 solar masses, 16.7 solar radii, and a temperature of 4390 K. Its radius is larger than the Sun's, and its temperature is cooler. One planet orbits this host.
HD 1690 b was discovered in 2010 by the radial velocity method, which measures the wobble a planet's gravity induces in its star's motion; repeated wobbles reveal the planet and its orbital period. The planet completes an orbit in 533 days. Its minimum mass - a lower bound on its true mass - is 2790 Earth masses, larger than Earth's and roughly 8.79 times Jupiter's mass.
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 |
|---|---|---|---|---|---|---|---|---|
| โ | โ | โ | โ | โ | K2 | 752.6 | Cannon & Pickering 1918 | TICv8 |
| 4406 | 1.02 | 19.60 | 8.37 | 1.53 | โ | 752.6 | Jofré et al. 2015 | TICv8 |
| 4360.7 | โ | 24.30 | โ | โ | โ | 752.6 | TICv8 | TICv8 |
| 4393 | 1.09 | 16.70 | 6.70 | 1.52 | K1 III | 752.6 | Moutou et al. 2011 | TICv8 |
| 4374 | 1.86 | 21.66 | โ | โ | โ | 752.6 | Stassun et al. 2017 | TICv8 |
| โ | โ | โ | โ | โ | K2 III | 752.6 | Gray et al. 2003 | TICv8 |
| 4364 | 1.18 | โ | โ | โ | โ | 752.6 | Mortier et al. 2013 | TICv8 |
| โ | โ | โ | โ | โ | K1 (III) | 752.6 | Michigan Catalog, Vol. 5 | TICv8 |
| 4445 | โ | 22.82 | โ | 2.26 | โ | 752.6 | Gaia DR2 | TICv8 |