Key parameters at a glance
- A radius of 12.20 Earth radii
- A mass of 5,740.93 Earth masses
- Surface gravity around 38.57 g
- An orbital period of 26,472.446 days
- Semi-major axis 17.2500 AU
- Distance from Earth 94.45 light-years
- Earth Similarity Index 0.305
- Travel time at Voyager 1 speed 1,665,543 years
1 sibling around HD 111232
HD 111232 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 111232 b | Gas Giant | 12.60 | 2,531.50 | 1,169.132 | — | 2003 |
| HD 111232 c this | Gas Giant | 12.20 | 5,740.93 | 26,472.446 | — | 2022 |
HD 111232 c Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1410of 1771
top 79.6%
This planet
12.20R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | HD 111232 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 12.20 | 11.21 |
| Mass (M⊕) | 1.00 | 5,740.93 | 317.83 |
| Density (g/cm³) | 5.51 | 17.40 | 1.33 |
| Surface Gravity (g) | 1.00 | 38.57 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 5,740.935 M⊕ | Direct mass measurement (not derived). |
| Minimum mass (M sin i) | 6,293.002 M⊕ | Lower bound from radial-velocity fitting. |
Star Catalogue Identifiers
HD
HD 111232
HIP
HIP 62534
TIC
TIC 329649885
Gaia DR2
Gaia DR2 5855730584310531200
Gaia DR3
Gaia DR3 5855730584310531200
System
HD 111232
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts about 72.48 Earth years on a highly eccentric trajectory at a mean orbital distance of 17.2500 AU.
Eq. Temperature
—
Insolation (S⊕)
—
Earth = 1.00
Earth Similarity (ESI)
0.305
0 = alien, 1 = Earth-identical
Detection Signatures
Radial velocity
Stellar wobble has been measured spectroscopically.
Astrometry
Positional wobble of the host star was measured.
Discovery Paper
Primary reference
Feng et al. 2022Instrument
Multiple Instruments
Publication
2022-09
Observation locale
Ground
Discovery cohort
Planets confirmed in 2022 at Multiple Observatories (12 shown).
Host System: HD 111232
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,512 K — cooler than the Sun (5,778 K)
Estimated Age
5.20 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.900 R☉
Stellar Mass
0.960 M☉
Metallicity [Fe/H]
-0.36
Extended Stellar Properties
Surface gravity (log g)
4.450 dex
Stellar density
1.717 g/cm³
Systemic radial velocity
104.40 km/s
Rotational v·sin i
1.20 km/s
Activity index (log R'HK)
-4.980
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
34.505 mas
Total Proper Motion
115.683 mas/yr
PM Right Ascension
27.29 mas/yr
PM Declination
112.42 mas/yr
Galactic Cartesian (pc)
x = -0.359 · y = -0.078 · z = -0.930
Equatorial (J2000)
RA 192.21596° · Dec -68.42467°
Galactic ℓ, b
302.694° · -5.554°
Ecliptic λ, β
230.836° · -55.310°
HTM-20 index
-977698418
Observation Record
Photometric series
1
RV measurements
2
Archive notes
1
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