Key parameters at a glance
- A radius of 16.14 Earth radii
- A mass of 263.80 Earth masses
- Surface gravity around 1.01 g
- An orbital period of 2.811 days
- Semi-major axis 0.0419 AU
- Equilibrium temperature 1,630 K (1357 °C)
- Distance from Earth 697.92 light-years
- Earth Similarity Index 0.064
- Travel time at Voyager 1 speed 12,307,905 years
HAT-P-30 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#146of 1771
top 8.2%
This planet
16.14R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | HAT-P-30 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 16.14 | 11.21 |
| Mass (M⊕) | 1.00 | 263.80 | 317.83 |
| Density (g/cm³) | 5.51 | 0.31 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.01 | 2.53 |
| Insolation (S⊕) | 1.00 | 1,467.96 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 263.799 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 455135327
Gaia DR2
Gaia DR2 3096441729861716224
Gaia DR3
Gaia DR3 3096441729861716224
System
HAT-P-30
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 2.81 Earth days (0.8% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0419 AU.
Transit Fingerprint
Depth
1.300 %
Duration
2.250 h
Impact parameter b
0.854
Rp / R★
0.110900
Transit midpoint (BJD)
2,457,775.2128
Photometric dip
Transit produces a flux drop of 13,000 ppm lasting ≈ 2.25 h.
Extended Orbital Architecture
Planet / star radius ratio
0.110900
Semi-major axis / stellar radius
7.430
Impact parameter (b)
0.854
RV semi-amplitude (K)
88.100 m/s
Transit mid-time (BJD)
2,457,775.2128
Long. of periastron (ω)
252.00°
Sky-projected obliquity (λ)
73.50°
Angular separation (arcsec)
0.19600
Eq. Temperature
1,630K
(1357 °C)
Insolation (S⊕)
1,467.96
Earth = 1.00
Earth Similarity (ESI)
0.064
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.
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
Johnson et al. 2011Instrument
2K CCD Sensor
Publication
2011-07
Observation locale
Ground
Discovery cohort
Planets confirmed in 2011 at HATNet (10 shown).
Host System: HAT-P-30
Spectral Class
F-type yellow-white
Effective Temperature
6,304 K — hotter than the Sun (5,778 K)
Estimated Age
1.00 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.310 R☉
Stellar Mass
1.550 M☉
Metallicity [Fe/H]
0.13
Extended Stellar Properties
Surface gravity (log g)
4.360 dex
Stellar density
0.980 g/cm³
Systemic radial velocity
45.51 km/s
Rotational v·sin i
2.20 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
4.645 mas
Total Proper Motion
29.537 mas/yr
PM Right Ascension
-17.52 mas/yr
PM Declination
23.78 mas/yr
Galactic Cartesian (pc)
x = -0.556 · y = 0.825 · z = 0.102
Equatorial (J2000)
RA 123.94984° · Dec 5.83687°
Galactic ℓ, b
217.412° · 21.405°
Ecliptic λ, β
124.856° · -13.589°
HTM-20 index
1207903535
Observation Record
RV measurements
2
Emission spectra
5
Archive notes
3
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