Temperature
5645 K
5491 to 5645
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Stellar HostProfile
HD 168443
Unclassified star • 39.62 pc
Records
19
literature rows
Planets
2
system count
References
19
distinct source labels
HIP: HIP 89844TIC: TIC 16465196HD: HD 168443
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
0.96 to 1.06
Radius
1.39 Rsun
1.39 to 1.71
Age
9 Gyr
9 to 11.08
Luminosity
0.25 log(Lsun)
0.25 to 0.38
Distance
39.62 pc
single adopted value
Planets
2
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 1.39 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
HD 168443
1.39 R☉
System Layout
Known planets
2 planets linked to this host
HD 168443 b
Radial Velocity
◌
Discovery
1998
Period
58.11 days
Radius
—
Mass
2424.4 M⊕
Eq. Temp
—
HD 168443 c
Radial Velocity
◌
Discovery
2000
Period
1753.1 days
Radius
—
Mass
5500.3 M⊕
Eq. Temp
—
HD 168443: A Sun-Like Star and Its Two Known Planets
HD 168443 is a G5 star located 129 light-years away. The star is 1.05 solar masses and 1.39 solar radii, placing its radius above the Sun's, and its temperature of 5650 K is cooler than the Sun's. It also has an age of 9 billion years. Two planets are known to orbit this host.
Both planets were found using the radial velocity method, which measures the gravitational wobble a planet induces in its star's motion over repeated orbits. HD 168443 b was discovered in 1998 and has a minimum mass of 2420 Earth masses, roughly 7.63 times Jupiter's mass. Its minimum mass exceeds Earth's. HD 168443 b completes an orbit in 58.1 days, the shortest reported year among the listed planets.
HD 168443 c was discovered in 2000 and has a mass of 5500 Earth masses, roughly 17.3 times Jupiter's mass, which is larger than Earth's. It takes 1750 days to complete one orbit, the longest reported year among the listed planets.
Provenance
Underlying measurements and references
Evidence Summary
Rows
19
Stellar refs
18
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 |
|---|---|---|---|---|---|---|---|---|
| 5530.0 | 1.04 | 1.71 | — | — | — | 39.62 | Rosenthal et al. 2021 | TICv8 |
| 5551 | 0.98 | 1.68 | — | 0.38 | — | 39.62 | TICv8 | TICv8 |
| — | — | — | — | — | — | 39.62 | Valenti & Fischer 2005 | TICv8 |
| — | 1.06 | — | — | — | — | 39.62 | An et al. 2025 | TICv8 |
| — | — | — | — | — | — | 39.62 | Wright et al. 2004 | TICv8 |
| — | 1.06 | — | — | — | — | 39.62 | An et al. 2025 | TICv8 |
| — | — | — | — | — | G6 V | 39.62 | Michigan Catalog, Vol. 5 | TICv8 |
| 5617 | 0.96 | — | — | — | — | 39.62 | Santos et al. 2004 | TICv8 |
| — | — | — | — | — | — | 39.62 | Nidever et al. 2002 | TICv8 |
| — | — | — | — | — | — | 39.62 | Nordstrom et al. 2004 | TICv8 |
| — | — | — | — | — | G6 V | 39.62 | Gray et al. 2006 | TICv8 |
| — | — | — | — | — | G5 | 39.62 | Wittenmyer et al. 2007 | TICv8 |
| 5600 | 0.96 | — | — | — | — | 39.62 | Santos et al. 2003 | TICv8 |
| 5491 | 0.99 | 1.51 | — | — | G5 | 39.62 | Pilyavsky et al. 2011 | TICv8 |
| — | 1.01 | 1.52 | 11.08 | — | — | 39.62 | Takeda et al. 2007 | TICv8 |
| 5578 | — | 1.66 | — | 0.38 | — | 39.62 | Gaia DR2 | TICv8 |
| — | 0.98 | — | — | — | — | 39.62 | Feng et al. 2022 | TICv8 |
| 5645 | 1.05 | 1.39 | 9 | 0.25 | — | 39.62 | Ghezzi et al. 2010 | TICv8 |
| — | — | — | — | — | G5 | 39.62 | Cannon & Pickering 1918 | TICv8 |