Key parameters at a glance
- A radius of 2.59 Earth radii
- A mass of 7.22 Earth masses
- Surface gravity around 1.08 g
- An orbital period of 13.900 days
- Equilibrium temperature 757 K (484 °C)
- Distance from Earth 259.48 light-years
- Earth Similarity Index 0.330
- Travel time at Voyager 1 speed 4,575,877 years
1 sibling around HD 109833
HD 109833 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 109833 b | Sub-Neptune | 2.89 | 8.69 | 9.189 | 786 | 2022 |
| HD 109833 c this | Sub-Neptune | 2.59 | 7.22 | 13.900 | 757 | 2022 |
HD 109833 c Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#1043of 1978
top 52.7%
This planet
2.59R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | HD 109833 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.59 | 11.21 |
| Mass (M⊕) | 1.00 | 7.22 | 317.83 |
| Density (g/cm³) | 5.51 | 2.28 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.08 | 2.53 |
| Insolation (S⊕) | 1.00 | 77.48 | 0.037 |
Star Catalogue Identifiers
HD
HD 109833
HIP
HIP 61723
TIC
TIC 360630575
Gaia DR2
Gaia DR2 5838450865699668736
Gaia DR3
Gaia DR3 5838450865699668736
System
HD 109833
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 13.90 Earth days (3.8% of a terrestrial year) on a highly eccentric trajectory.
Transit Fingerprint
Depth
0.065 %
Duration
2.126 h
Impact parameter b
0.730
Rp / R★
0.023700
Transit midpoint (BJD)
2,456,440.7567
Photometric dip
Transit produces a flux drop of 647 ppm lasting ≈ 2.13 h.
Extended Orbital Architecture
Planet / star radius ratio
0.023700
Semi-major axis / stellar radius
29.400
Impact parameter (b)
0.730
Transit mid-time (BJD)
2,456,440.7567
Eq. Temperature
757K
(484 °C)
Insolation (S⊕)
77.48
Earth = 1.00
Earth Similarity (ESI)
0.330
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water.
Discovery Paper
Primary reference
Wood et al. 2022Instrument
TESS CCD Array
Publication
2022-12
Observation locale
Space
Discovery cohort
Planets confirmed in 2022 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: HD 109833
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,881 K — hotter than the Sun (5,778 K)
Estimated Age
0.03 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.000 R☉
Stellar Mass
1.080 M☉
Metallicity [Fe/H]
-0.07
Extended Stellar Properties
Surface gravity (log g)
4.450 dex
Stellar density
1.523 g/cm³
Rotational v·sin i
10.50 km/s
Rotation period
5.11 days
Metallicity ratio
[M/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
12.541 mas
Total Proper Motion
50.825 mas/yr
PM Right Ascension
-50.36 mas/yr
PM Declination
-6.87 mas/yr
Galactic Cartesian (pc)
x = -0.262 · y = -0.045 · z = -0.964
Equatorial (J2000)
RA 189.77586° · Dec -74.57402°
Galactic ℓ, b
302.095° · -11.722°
Ecliptic λ, β
238.324° · -60.050°
HTM-20 index
-1769214977
Similar Worlds
Kepler-604 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.59 R⊕ · 3,348.0 ly
Kepler-265 e
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.59 R⊕ · 4,175.6 ly
Kepler-843 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.59 R⊕ · 3,801.9 ly
Kepler-1821 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.59 R⊕ · 2,608.3 ly
TOI-669 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.59 R⊕ · 466.0 ly
Kepler-1886 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.58 R⊕ · 3,455.7 ly