Temperature
5071 K
4722 to 5076
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Stellar HostProfile
HD 28678
Unclassified star • 189.9 pc
Records
9
literature rows
Planets
1
system count
References
10
distinct source labels
HIP: HIP 21109TIC: TIC 449145115HD: HD 28678
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: Jofré et al. 2015 • System source: TICv8
Mass
1.41 Msun
1.41 to 3.16
Radius
3.71 Rsun
3.71 to 6.98
Age
2.88 Gyr
1.80 to 2.88
Luminosity
1.20 log(Lsun)
1.20 to 1.36
Distance
189.9 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 3.71 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
HD 28678
3.71 R☉
System Layout
Known planets
1 planets linked to this host
HD 28678 b
Radial Velocity
◌
Discovery
2011
Period
380.2 days
Radius
—
Mass
490.1 M⊕
Eq. Temp
—
HD 28678 and Its Planet
HD 28678 is a star 619 light-years away with a spectral type of G8 IV. It is 2.88 billion years old and has a mass of 1.41 solar masses, a radius of 3.71 solar radii, and a temperature of 5070 K. Its reported mass and radius estimates are larger than the Sun's, while its reported temperature is cooler than the Sun's. One planet orbits this host.
HD 28678 b was discovered in 2011 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 has a minimum mass of 490 Earth masses, a lower bound on its true mass, and an orbital period of 380 days. Its minimum mass is larger than Earth's and roughly 1.54 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 |
|---|---|---|---|---|---|---|---|---|
| — | — | — | — | — | G8 IV | 189.9 | Michigan Catalog, Vol. 5 | TICv8 |
| 5076 | 1.74 | 6.20 | 1.80 | 1.36 | — | 189.9 | Johnson et al. 2011 | TICv8 |
| 4972 | — | 6.86 | — | — | — | 189.9 | TICv8 | TICv8 |
| 4722 | 3.16 | 6.98 | — | — | — | 189.9 | Stassun et al. 2017 | TICv8 |
| — | — | — | — | — | K0 | 189.9 | Cannon & Pickering 1918 | TICv8 |
| 4972 | 1.53 | 6.48 | — | — | — | 189.9 | Luhn et al. 2019 | TICv8 |
| 5071 | 1.41 | 3.71 | 2.88 | 1.20 | — | 189.9 | Jofré et al. 2015 | TICv8 |
| 5052 | 2.03 | — | — | — | — | 189.9 | Mortier et al. 2013 | TICv8 |
| 4947.6 | — | 5.80 | — | 1.26 | — | 189.9 | Gaia DR2 | TICv8 |