Temperature
4909 K
4861 to 4925
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Stellar HostProfile
HD 33844
K0 III • 105.8 pc
Records
8
literature rows
Planets
2
system count
References
9
distinct source labels
TIC: TIC 169534187HD: HD 33844HIP: HIP 24275
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: Jenkins et al. 2025 • System source: TICv8
Mass
1.55 Msun
1.47 to 1.84
Radius
5.39 Rsun
5.29 to 5.51
Age
2.42 Gyr
1.88 to 2.42
Luminosity
1.17 log(Lsun)
1.15 to 1.18
Distance
105.8 pc
single adopted value
Spectral Type
K0 III
Multiple classifications reported
Planets
2
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 5.39 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
HD 33844
5.39 R☉
System Layout
Known planets
2 planets linked to this host
HD 33844 b
Radial Velocity
◌
Discovery
2015
Period
551.4 days
Radius
—
Mass
638.8 M⊕
Eq. Temp
—
HD 33844 c
Radial Velocity
◌
Discovery
2015
Period
916 days
Radius
—
Mass
556.2 M⊕
Eq. Temp
—
HD 33844 and Its Two Known Planets
HD 33844 is a star located 345 light-years away with two known planets. The host is a K0 III star with an age of 2.42 billion years, a mass of 1.55 solar masses, a radius of 5.39 solar radii, and a temperature of 4910 K. Its reported mass and radius estimates are larger than the Sun's, while its reported temperature is cooler than the Sun's.
Both planets were discovered in 2015 using the radial velocity method. This technique measures the wobble a planet's gravity induces in its star's motion, with repeated wobbles revealing the planet and its orbital period.
HD 33844 b has a minimum mass of 639 Earth masses and an orbital period of 551 days. Its minimum mass is larger than Earth's and roughly 2.01 times Jupiter's mass. Among the listed planets, HD 33844 b has the shortest year by reported estimates and the largest minimum mass.
HD 33844 c has a minimum mass of 556 Earth masses and an orbital period of 916 days. Its minimum mass is larger than Earth's and roughly 1.75 times Jupiter's mass. Among the listed planets, HD 33844 c has the longest year by reported estimates and the smallest minimum mass.
Provenance
Underlying measurements and references
Evidence Summary
Rows
8
Stellar refs
8
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 |
|---|---|---|---|---|---|---|---|---|
| 4861 | 1.84 | 5.39 | — | — | — | 105.8 | Stassun et al. 2017 | TICv8 |
| 4925 | — | 5.37 | — | — | — | 105.8 | TICv8 | TICv8 |
| — | 1.47 | 5.51 | — | 1.18 | — | 105.8 | Lin et al. 2024 | TICv8 |
| 4861 | 1.78 | 5.29 | 1.88 | 1.15 | K0 III | 105.8 | Wittenmyer et al. 2016 | TICv8 |
| 4888.1 | — | 5.38 | — | 1.17 | — | 105.8 | Gaia DR2 | TICv8 |
| 4909 | 1.55 | 5.39 | 2.42 | 1.17 | K0 III | 105.8 | Jenkins et al. 2025 | TICv8 |
| — | — | — | — | — | K0 III | 105.8 | Michigan Catalog, Vol. 4 | TICv8 |
| — | — | — | — | — | G5 | 105.8 | Cannon & Pickering 1918 | TICv8 |