Temperature
4832 K
4829.9 to 4952
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Stellar HostProfile
HD 27894
Unclassified star • 43.82 pc
Records
14
literature rows
Planets
3
system count
References
14
distinct source labels
TIC: TIC 396697266HD: HD 27894HIP: HIP 20277
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
0.80 Msun
0.72 to 0.87
Radius
0.85 Rsun
0.85 to 0.89
Age
13 Gyr
3.90 to 13
Luminosity
-0.45 log(Lsun)
-0.47 to -0.41
Distance
43.82 pc
single adopted value
Planets
3
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.85 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
HD 27894
0.85 R☉
System Layout
Known planets
3 planets linked to this host
HD 27894 b
Radial Velocity
◌
Discovery
2005
Period
18.02 days
Radius
—
Mass
196.7 M⊕
Eq. Temp
—
HD 27894 c
Radial Velocity
◌
Discovery
2017
Period
36.07 days
Radius
—
Mass
51.49 M⊕
Eq. Temp
—
HD 27894 d
Radial Velocity
◌
Discovery
2017
Period
5019.5 days
Radius
—
Mass
2063.7 M⊕
Eq. Temp
—
HD 27894 and Its Three Planets
HD 27894 is a K2 star 143 light-years away with three known planets. Its reported mass is 0.8 solar masses and its reported radius is 0.85 solar radii, both smaller than the Sun's corresponding values. The star's reported temperature is 4830 K, cooler than the Sun's, and its age is a reported lower limit of 13 billion years.
All three planets were found 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. HD 27894 b was discovered in 2005, and HD 27894 c and HD 27894 d were both discovered in 2017.
HD 27894 b has a minimum mass of 197 Earth masses, larger than Earth's. A minimum mass is a lower bound on a planet's true mass, not an exact value. Its orbital period is 18 days. Among the listed planets, HD 27894 b has the shortest year by reported estimates.
HD 27894 c has a minimum mass of 51.5 Earth masses, also larger than Earth's, and an orbital period of 36.1 days. Among the listed planets, HD 27894 c has the second-shortest year by reported estimates.
HD 27894 d has a reported mass of 2060 Earth masses, larger than Earth's and roughly 6.49 times Jupiter's mass. Its orbital period is 5020 days. Among the listed planets, HD 27894 d has the longest year by reported estimates.
Provenance
Underlying measurements and references
Evidence Summary
Rows
14
Stellar refs
13
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 |
|---|---|---|---|---|---|---|---|---|
| 4829.9 | — | 0.89 | — | -0.41 | — | 43.82 | Gaia DR2 | TICv8 |
| — | 0.81 | — | — | — | — | 43.82 | Feng et al. 2022 | TICv8 |
| — | 0.87 | — | — | — | — | 43.82 | An et al. 2025 | TICv8 |
| — | 0.87 | — | — | — | — | 43.82 | An et al. 2025 | TICv8 |
| 4894 | — | — | — | — | — | 43.82 | Tsantaki et al. 2014 | TICv8 |
| — | 0.80 | — | — | — | K2 V | 43.82 | Trifonov et al. 2017 | TICv8 |
| 4875 | 0.80 | — | 3.90 | -0.45 | K2 V | 43.82 | Moutou et al. 2005 | TICv8 |
| 4833 | — | — | — | — | — | 43.82 | Suárez-Andrés et al. 2016 | TICv8 |
| — | — | — | — | — | K2 V | 43.82 | Michigan Catalog, Vol. 1 | TICv8 |
| 4832 | 0.80 | 0.85 | 13 | -0.45 | — | 43.82 | Ghezzi et al. 2010 | TICv8 |
| — | — | — | — | — | — | 43.82 | Kürster et al. 2015 | TICv8 |
| 4952 | 0.72 | — | — | -0.47 | — | 43.82 | Sousa et al. 2008 | TICv8 |
| 4912.2 | 0.81 | 0.85 | — | -0.42 | — | 43.82 | TICv8 | TICv8 |
| — | — | — | — | — | K2 | 43.82 | Cannon & Pickering 1918 | TICv8 |