Key parameters at a glance
- A radius of 12.10 Earth radii
- A mass of 98.53 Earth masses
- Surface gravity around 0.67 g
- An orbital period of 286.600 days
- Semi-major axis 0.9400 AU
- Distance from Earth 198.30 light-years
- Earth Similarity Index 0.269
- Travel time at Voyager 1 speed 3,497,030 years
2 siblings around HD 184010
HD 184010 b shares its host star with 2 other confirmed planets. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| HD 184010 b this | Gas Giant | 12.10 | 98.53 | 286.600 | — | 2022 |
| HD 184010 c | Gas Giant | 11.80 | 95.35 | 484.300 | — | 2022 |
| HD 184010 d | Gas Giant | 14.30 | 143.02 | 836.400 | — | 2022 |
HD 184010 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1454of 1771
top 82.0%
This planet
12.10R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | HD 184010 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 12.10 | 11.21 |
| Mass (M⊕) | 1.00 | 98.53 | 317.83 |
| Density (g/cm³) | 5.51 | 0.31 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.67 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Minimum mass (M sin i) | 98.527 M⊕ | Lower bound from radial-velocity fitting. |
Star Catalogue Identifiers
HD
HD 184010
TIC
TIC 113329742
Gaia DR2
Gaia DR2 2024845946447691264
Gaia DR3
Gaia DR3 2024845946447691264
System
HD 184010
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 286.60 Earth days (78.5% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.9400 AU.
Extended Orbital Architecture
RV semi-amplitude (K)
7.700 m/s
Transit mid-time (BJD)
2,454,609.2000
Long. of periastron (ω)
0.00°
Angular separation (arcsec)
15.50000
Eq. Temperature
—
Insolation (S⊕)
—
Earth = 1.00
Earth Similarity (ESI)
0.269
0 = alien, 1 = Earth-identical
Discovery Paper
Primary reference
Teng et al. 2022Instrument
HIDES Echelle Spectrograph
Publication
2022-09
Observation locale
Ground
Discovery cohort
Planets confirmed in 2022 at Okayama Astrophysical Observatory (3 shown).
Host System: HD 184010
Spectral Class
K-type orange
Effective Temperature
4,971 K — cooler than the Sun (5,778 K)
Estimated Age
2.76 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
4.860 R☉
Stellar Mass
1.350 M☉
Metallicity [Fe/H]
-0.17
Extended Stellar Properties
Surface gravity (log g)
3.180 dex
Rotational v·sin i
1.34 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
16.419 mas
Total Proper Motion
27.417 mas/yr
PM Right Ascension
10.71 mas/yr
PM Declination
25.24 mas/yr
Galactic Cartesian (pc)
x = 0.347 · y = -0.824 · z = 0.448
Equatorial (J2000)
RA 292.84014° · Dec 26.61728°
Galactic ℓ, b
60.994° · 3.807°
Ecliptic λ, β
300.989° · 47.629°
HTM-20 index
-447197126
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