Temperature
5741 K
5600 to 5842
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Stellar HostProfile
HD 195019
Unclassified star • 37.67 pc
Records
16
literature rows
Planets
1
system count
References
17
distinct source labels
HIP: HIP 100970TIC: TIC 210171104HD: HD 195019
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
1.05 Msun
0.98 to 1.21
Radius
1.48 Rsun
1.38 to 1.56
Age
8.50 Gyr
3.20 to 9.32
Luminosity
0.33 log(Lsun)
0.33 to 0.33
Distance
37.67 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 1.48 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
HD 195019
1.48 R☉
System Layout
Known planets
1 planets linked to this host
HD 195019 b
Radial Velocity
◌
Discovery
1998
Period
18.20 days
Radius
—
Mass
1265.0 M⊕
Eq. Temp
—
HD 195019 and Its Planet
HD 195019 is a star 123 light-years away with a spectral type of G3 V/IV. Its measured age is 8.5 billion years, its mass is 1.05 solar masses, its radius is 1.48 solar radii, and its temperature is 5740 K. The star's reported radius estimate is larger than the Sun's, and its reported temperature is cooler than the Sun's. One planet is known to orbit this host.
That planet, HD 195019 b, was discovered in 1998 by the radial velocity method, which detects the wobble a planet's gravity induces in its star's motion; repeated wobbles reveal the planet and its orbital period. Its minimum mass is 1260 Earth masses, a lower bound on its true mass that is larger than Earth's and roughly 3.98 times Jupiter's mass. HD 195019 b completes each orbit in 18.2 days.
Provenance
Underlying measurements and references
Evidence Summary
Rows
16
Stellar refs
16
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 |
|---|---|---|---|---|---|---|---|---|
| — | 1.02 | 1.38 | 9.32 | — | — | 37.67 | Takeda et al. 2007 | TICv8 |
| 5788 | 1.07 | — | — | — | — | 37.67 | Butler et al. 2006 | TICv8 |
| 5768.2 | — | 1.47 | — | 0.33 | — | 37.67 | Gaia DR2 | TICv8 |
| 5750 | 1.03 | 1.48 | — | 0.33 | — | 37.67 | TICv8 | TICv8 |
| — | — | — | — | — | — | 37.67 | Nordstrom et al. 2004 | TICv8 |
| 5746.6 | 1.05 | 1.56 | — | — | — | 37.67 | Rosenthal et al. 2021 | TICv8 |
| — | — | — | — | — | — | 37.67 | Wright et al. 2004 | TICv8 |
| 5600 | 0.98 | — | 3.20 | — | G3 V/IV | 37.67 | Fischer et al. 1999 | TICv8 |
| 5842 | 1.06 | — | — | — | G3 IV-V | 37.67 | Wittenmyer et al. 2007 | TICv8 |
| — | — | — | — | — | — | 37.67 | Nidever et al. 2002 | TICv8 |
| 5741 | 1.05 | 1.48 | 8.50 | 0.33 | — | 37.67 | Ghezzi et al. 2010 | TICv8 |
| — | — | — | — | — | — | 37.67 | Valenti & Fischer 2005 | TICv8 |
| 5751 | 1.21 | 1.48 | — | — | — | 37.67 | Stassun et al. 2017 | TICv8 |
| — | — | — | — | — | G5 | 37.67 | Cannon & Pickering 1918 | TICv8 |
| 5840 | 1.06 | — | — | — | — | 37.67 | Santos et al. 2003 | TICv8 |
| 5842 | 1.06 | — | — | — | — | 37.67 | Santos et al. 2004 | TICv8 |