Key parameters at a glance
- A radius of 12.70 Earth radii
- A mass of 2,097.67 Earth masses
- Surface gravity around 13.01 g
- An orbital period of 490.000 days
- Semi-major axis 1.3000 AU
- Distance from Earth 682.67 light-years
- Earth Similarity Index 0.440
- Travel time at Voyager 1 speed 12,038,953 years
Context from the literature
HD 36384 is a star with an orbiting exoplanet companion in the northern constellation Camelopardalis. It is dimly visible to the naked eye with an apparent visual magnitude of 6.19. The distance to this system is approximately 693 light-years based on parallax measurements, but is drifting closer with a heliocentric radial velocity of −5 km/s.
Excerpted from Wikipedia · full article
HD 36384 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1130of 1771
top 63.7%
This planet
12.70R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | HD 36384 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 12.70 | 11.21 |
| Mass (M⊕) | 1.00 | 2,097.67 | 317.83 |
| Density (g/cm³) | 5.51 | 5.63 | 1.33 |
| Surface Gravity (g) | 1.00 | 13.01 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Minimum mass (M sin i) | 2,097.667 M⊕ | Lower bound from radial-velocity fitting. |
Star Catalogue Identifiers
HD
HD 36384
HIP
HIP 26638
TIC
TIC 418343111
Gaia DR2
Gaia DR2 502835190261902464
Gaia DR3
Gaia DR3 502835190261902464
System
HD 36384
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts about 1.34 Earth years on a mildly elliptical path at a mean orbital distance of 1.3000 AU.
Eq. Temperature
—
Insolation (S⊕)
—
Earth = 1.00
Earth Similarity (ESI)
0.440
0 = alien, 1 = Earth-identical
Discovery Paper
Primary reference
Lee et al. 2023Instrument
BOES Echelle Spectrograph
Publication
2023-08
Observation locale
Ground
Discovery cohort
Planets confirmed in 2023 at Bohyunsan Optical Astronomical Observatory (3 shown).
Host System: HD 36384
Spectral Class
M-type red dwarf
Effective Temperature
3,940 K — cooler than the Sun (5,778 K)
Estimated Age
0.11 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
38.400 R☉
Stellar Mass
1.140 M☉
Metallicity [Fe/H]
-0.16
Extended Stellar Properties
Surface gravity (log g)
1.100 dex
Rotational v·sin i
4.50 km/s
Rotation period
440.00 days
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
4.751 mas
Total Proper Motion
27.230 mas/yr
PM Right Ascension
-6.71 mas/yr
PM Declination
26.39 mas/yr
Galactic Cartesian (pc)
x = 0.023 · y = 0.257 · z = 0.966
Equatorial (J2000)
RA 84.93200° · Dec 75.04399°
Galactic ℓ, b
138.256° · 21.706°
Ecliptic λ, β
87.891° · 51.642°
HTM-20 index
-1103288870
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