Key parameters at a glance
- A radius of 3.00 Earth radii
- A mass of 379.00 Earth masses
- Surface gravity around 42.11 g
- An orbital period of 7.713 days
- Semi-major axis 0.0787 AU
- Equilibrium temperature 1,060 K (787 °C)
- Distance from Earth 190.85 light-years
- Earth Similarity Index 0.118
- Travel time at Voyager 1 speed 3,365,620 years
HIP 94235 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#521of 1978
top 26.3%
This planet
3.00R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | HIP 94235 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 3.00 | 11.21 |
| Mass (M⊕) | 1.00 | 379.00 | 317.83 |
| Density (g/cm³) | 5.51 | — | 1.33 |
| Surface Gravity (g) | 1.00 | 42.11 | 2.53 |
| Insolation (S⊕) | 1.00 | 219.28 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 379.000 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
HIP
HIP 94235
TIC
TIC 464646604
Gaia DR2
Gaia DR2 6632318361397624960
Gaia DR3
Gaia DR3 6632318361397624960
System
HIP 94235
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 7.71 Earth days (2.1% of a terrestrial year) on a highly eccentric trajectory at a mean orbital distance of 0.0787 AU.
Transit Fingerprint
Depth
0.073 %
Duration
2.470 h
Rp / R★
0.025300
Transit midpoint (BJD)
2,459,037.8704
Photometric dip
Transit produces a flux drop of 729 ppm lasting ≈ 2.47 h.
Extended Orbital Architecture
Planet / star radius ratio
0.025300
Semi-major axis / stellar radius
15.700
RV semi-amplitude (K)
150.000 m/s
Transit mid-time (BJD)
2,459,037.8704
Long. of periastron (ω)
17.00°
Angular separation (arcsec)
1.34000
Eq. Temperature
1,060K
(787 °C)
Insolation (S⊕)
219.28
Earth = 1.00
Earth Similarity (ESI)
0.118
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.
Discovery Paper
Primary reference
Zhou et al. 2022Instrument
TESS CCD Array
Publication
2022-04
Observation locale
Space
Discovery cohort
Planets confirmed in 2022 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: HIP 94235
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,991 K — hotter than the Sun (5,778 K)
Estimated Age
0.12 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.080 R☉
Stellar Mass
1.094 M☉
Metallicity [Fe/H]
0.00
Extended Stellar Properties
Surface gravity (log g)
4.460 dex
Stellar density
1.199 g/cm³
Rotational v·sin i
24.40 km/s
Rotation period
2.24 days
Metallicity ratio
[M/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
17.061 mas
Total Proper Motion
101.410 mas/yr
PM Right Ascension
11.57 mas/yr
PM Declination
-100.75 mas/yr
Galactic Cartesian (pc)
x = 0.151 · y = -0.472 · z = -0.868
Equatorial (J2000)
RA 287.74114° · Dec -60.27264°
Galactic ℓ, b
336.181° · -25.692°
Ecliptic λ, β
280.977° · -37.508°
HTM-20 index
-1283257462
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