Key parameters at a glance
- A radius of 2.11 Earth radii
- A mass of 10.50 Earth masses
- Surface gravity around 2.35 g
- An orbital period of 6.744 days
- Semi-major axis 0.0680 AU
- Equilibrium temperature 990 K (717 °C)
- Distance from Earth 346.73 light-years
- Earth Similarity Index 0.280
- Travel time at Voyager 1 speed 6,114,524 years
1 sibling around HD 110113
HD 110113 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 110113 b | Sub-Neptune | 2.05 | 4.55 | 2.541 | 1,371 | 2021 |
| HD 110113 c this | Sub-Neptune | 2.11 | 10.50 | 6.744 | 990 | 2021 |
HD 110113 c Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#1805of 1978
top 91.2%
This planet
2.11R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | HD 110113 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.11 | 11.21 |
| Mass (M⊕) | 1.00 | 10.50 | 317.83 |
| Density (g/cm³) | 5.51 | 6.11 | 1.33 |
| Surface Gravity (g) | 1.00 | 2.35 | 2.53 |
| Insolation (S⊕) | 1.00 | 199.90 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Minimum mass (M sin i) | 10.500 M⊕ | Lower bound from radial-velocity fitting. |
Star Catalogue Identifiers
HD
HD 110113
HIP
HIP 61820
TIC
TIC 73228647
Gaia DR2
Gaia DR2 6133384959942131968
Gaia DR3
Gaia DR3 6133384959942131968
System
HD 110113
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 6.74 Earth days (1.8% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0680 AU.
Transit Fingerprint
Depth
0.045 %
Duration
1.371 h
Transit midpoint (BJD)
2,458,576.1593
Photometric dip
Transit produces a flux drop of 451 ppm lasting ≈ 1.37 h.
Eq. Temperature
990K
(717 °C)
Insolation (S⊕)
199.90
Earth = 1.00
Earth Similarity (ESI)
0.280
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water.
Detection Signatures
Transit photometry
A transit dip has been observed from at least one telescope.
Radial velocity
Stellar wobble has been measured spectroscopically.
Discovery Paper
Primary reference
Osborn et al. 2021Instrument
HARPS Spectrograph
Publication
2021-04
Observation locale
Ground
Discovery cohort
Planets confirmed in 2021 at La Silla Observatory (12 shown).
Host System: HD 110113
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,732 K — cooler than the Sun (5,778 K)
Estimated Age
4.00 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.968 R☉
Stellar Mass
0.997 M☉
Metallicity [Fe/H]
0.14
Extended Stellar Properties
Surface gravity (log g)
4.460 dex
Stellar density
1.512 g/cm³
Systemic radial velocity
17.13 km/s
Rotational v·sin i
1.74 km/s
Rotation period
20.80 days
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
9.379 mas
Total Proper Motion
14.182 mas/yr
PM Right Ascension
-3.72 mas/yr
PM Declination
-13.68 mas/yr
Galactic Cartesian (pc)
x = -0.705 · y = -0.125 · z = -0.699
Equatorial (J2000)
RA 190.03656° · Dec -44.31208°
Galactic ℓ, b
300.802° · 18.513°
Ecliptic λ, β
209.103° · -36.251°
HTM-20 index
-843181424
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