Key parameters at a glance
- A radius of 3.20 Earth radii
- A mass of 10.30 Earth masses
- Surface gravity around 1.01 g
- An orbital period of 10.183 days
- Semi-major axis 0.1130 AU
- Equilibrium temperature 957 K (684 °C)
- Distance from Earth 342.78 light-years
- Earth Similarity Index 0.238
- Travel time at Voyager 1 speed 6,044,870 years
HD 110082 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#348of 1978
top 17.5%
This planet
3.20R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | HD 110082 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 3.20 | 11.21 |
| Mass (M⊕) | 1.00 | 10.30 | 317.83 |
| Density (g/cm³) | 5.51 | 1.73 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.01 | 2.53 |
| Insolation (S⊕) | 1.00 | 198.39 | 0.037 |
Star Catalogue Identifiers
HD
HD 110082
HIP
HIP 62662
TIC
TIC 383390264
Gaia DR2
Gaia DR2 5765748511163751936
Gaia DR3
Gaia DR3 5765748511163751936
System
HD 110082
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 10.18 Earth days (2.8% of a terrestrial year) on a mildly elliptical path at a mean orbital distance of 0.1130 AU.
Transit Fingerprint
Depth
0.067 %
Duration
2.910 h
Impact parameter b
0.500
Rp / R★
0.025000
Transit midpoint (BJD)
2,458,629.9090
Photometric dip
Transit produces a flux drop of 668 ppm lasting ≈ 2.91 h.
Extended Orbital Architecture
Planet / star radius ratio
0.025000
Semi-major axis / stellar radius
20.000
Impact parameter (b)
0.500
Transit mid-time (BJD)
2,458,629.9090
Long. of periastron (ω)
138.00°
Angular separation (arcsec)
1.08000
Eq. Temperature
957K
(684 °C)
Insolation (S⊕)
198.39
Earth = 1.00
Earth Similarity (ESI)
0.238
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
Tofflemire et al. 2021Instrument
TESS CCD Array
Publication
2021-04
Observation locale
Space
Discovery cohort
Planets confirmed in 2021 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: HD 110082
Spectral Class
F-type yellow-white
Effective Temperature
6,200 K — hotter than the Sun (5,778 K)
Estimated Age
0.25 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.190 R☉
Stellar Mass
1.210 M☉
Metallicity [Fe/H]
0.08
Extended Stellar Properties
Surface gravity (log g)
4.200 dex
Stellar density
1.000 g/cm³
Systemic radial velocity
3.63 km/s
Rotational v·sin i
25.30 km/s
Rotation period
2.34 days
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
9.486 mas
Total Proper Motion
26.070 mas/yr
PM Right Ascension
-18.78 mas/yr
PM Declination
-18.09 mas/yr
Galactic Cartesian (pc)
x = -0.032 · y = -0.007 · z = -0.999
Equatorial (J2000)
RA 192.58929° · Dec -88.12111°
Galactic ℓ, b
302.922° · -25.249°
Ecliptic λ, β
265.469° · -66.085°
HTM-20 index
795962701
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