Key parameters at a glance
- A radius of 13.60 Earth radii
- A mass of 476.74 Earth masses
- Surface gravity around 2.58 g
- An orbital period of 8,241.000 days
- Semi-major axis 8.0000 AU
- Distance from Earth 133.39 light-years
- Earth Similarity Index 0.341
- Travel time at Voyager 1 speed 2,352,418 years
1 sibling around HD 83443
HD 83443 c shares its host star with 1 other confirmed planet. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| HD 83443 b | Gas Giant | 14.10 | 127.77 | 2.986 | — | 2002 |
| HD 83443 c this | Gas Giant | 13.60 | 476.74 | 8,241.000 | — | 2022 |
HD 83443 c Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#609of 1771
top 34.3%
This planet
13.60R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | HD 83443 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 13.60 | 11.21 |
| Mass (M⊕) | 1.00 | 476.74 | 317.83 |
| Density (g/cm³) | 5.51 | 1.04 | 1.33 |
| Surface Gravity (g) | 1.00 | 2.58 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 476.743 M⊕ | Direct mass measurement (not derived). |
| Minimum mass (M sin i) | 429.068 M⊕ | Lower bound from radial-velocity fitting. |
Star Catalogue Identifiers
HD
HD 83443
HIP
HIP 47202
TIC
TIC 32820141
Gaia DR2
Gaia DR2 5424836719001215360
Gaia DR3
Gaia DR3 5424836719001215360
System
HD 83443
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts about 22.56 Earth years on a highly eccentric trajectory at a mean orbital distance of 8.0000 AU.
Eq. Temperature
—
Insolation (S⊕)
—
Earth = 1.00
Earth Similarity (ESI)
0.341
0 = alien, 1 = Earth-identical
Discovery Paper
Primary reference
Errico et al. 2022Instrument
Multiple Instruments
Publication
2022-06
Observation locale
Ground
Discovery cohort
Planets confirmed in 2022 at Multiple Observatories (12 shown).
Host System: HD 83443
Spectral Class
K-type orange
Effective Temperature
5,442 K — cooler than the Sun (5,778 K)
Estimated Age
2.64 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.940 R☉
Stellar Mass
1.000 M☉
Metallicity [Fe/H]
0.34
Extended Stellar Properties
Surface gravity (log g)
4.390 dex
Stellar density
1.320 g/cm³
Systemic radial velocity
28.89 km/s
Rotational v·sin i
1.30 km/s
Rotation period
35.30 days
Activity index (log R'HK)
-4.840
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
24.422 mas
Total Proper Motion
122.134 mas/yr
PM Right Ascension
21.74 mas/yr
PM Declination
-120.18 mas/yr
Galactic Cartesian (pc)
x = -0.591 · y = 0.425 · z = -0.685
Equatorial (J2000)
RA 144.29941° · Dec -43.27272°
Galactic ℓ, b
269.596° · 6.679°
Ecliptic λ, β
168.789° · -52.932°
HTM-20 index
280604857
Observation Record
Photometric series
1
RV measurements
5
Stellar spectra
1
Archive notes
1
Similar Worlds
HS Psc b
Gas Giant · K-type orange
Radius 13.60 R⊕ · 122.8 ly
HD 185283 b
Gas Giant · K-type orange
Radius 13.60 R⊕ · 102.4 ly
HD 331093 b
Gas Giant · K-type orange
Radius 13.60 R⊕ · 163.7 ly
HD 167042 b
Gas Giant · K-type orange
Radius 13.60 R⊕ · 162.0 ly
HD 10442 b
Gas Giant · K-type orange
Radius 13.60 R⊕ · 441.5 ly
HD 141399 c
Gas Giant · K-type orange
Radius 13.60 R⊕ · 120.7 ly