Temperature
5474 K
5474 to 5555.3
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Stellar HostProfile
HD 1397
Unclassified star • 79.57 pc
Records
7
literature rows
Planets
1
system count
References
8
distinct source labels
TIC: TIC 394137592HD: HD 1397HIP: HIP 1419
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: Brahm et al. 2019 • System source: TICv8
Mass
1.26 Msun
0.96 to 1.32
Radius
2.34 Rsun
2.27 to 2.49
Age
4.46 Gyr
4.46 to 4.51
Luminosity
0.64 log(Lsun)
0.64 to 0.66
Distance
79.57 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 2.34 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
HD 1397
2.34 R☉
System Layout
Known planets
1 planets linked to this host
HD 1397 b
Transit
◌
Discovery
2018
Period
11.54 days
Radius
11.50 R⊕
Mass
131.9 M⊕
Eq. Temp
1228.3 K
HD 1397 and Its Jupiter-Like Planet
HD 1397 is a G0 star located 260 light-years away. Its mass is 1.26 solar masses, its radius is 2.34 solar radii, and its temperature is 5470 K, cooler than the Sun's. The star is 4.46 billion years old. One planet orbits this host.
That planet is HD 1397 b, a Jupiter-like world discovered by transit in 2018. Its radius is 11.5 Earth radii, larger than Earth's, and its mass is 132 Earth masses, also larger than Earth's. It completes an orbit every 11.5 days, and its mean density is 0.478 g/cm³, 0.0867 times Earth's.
Provenance
Underlying measurements and references
Evidence Summary
Rows
7
Stellar refs
7
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 |
|---|---|---|---|---|---|---|---|---|
| 5479.3 | — | 2.49 | — | — | — | 79.57 | ExoFOP | TICv8 |
| 5479.3 | 0.96 | 2.34 | — | 0.65 | — | 79.57 | TICv8 | TICv8 |
| — | — | — | — | — | G0 | 79.57 | Cannon & Pickering 1918 | TICv8 |
| 5555.3 | — | 2.27 | — | 0.65 | — | 79.57 | Gaia DR2 | TICv8 |
| 5474 | 1.26 | 2.34 | 4.46 | 0.64 | — | 79.57 | Brahm et al. 2019 | TICv8 |
| — | — | — | — | — | G5 III/IV | 79.57 | Michigan Catalog, Vol. 1 | TICv8 |
| 5521 | 1.32 | 2.34 | 4.51 | 0.66 | — | 79.57 | Nielsen et al. 2019 | TICv8 |