Key parameters at a glance
- A radius of 12.50 Earth radii
- A mass of 3,279.67 Earth masses
- Surface gravity around 20.99 g
- An orbital period of 15,319.225 days
- Semi-major axis 11.3640 AU
- Distance from Earth 35.82 light-years
- Earth Similarity Index 0.380
- Travel time at Voyager 1 speed 631,635 years
1 sibling around HD 115404 A
HD 115404 A c shares its host star with 1 other confirmed planet. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| HD 115404 A b | Neptune-like | 6.09 | 30.83 | 10.495 | — | 2022 |
| HD 115404 A c this | Gas Giant | 12.50 | 3,279.67 | 15,319.225 | — | 2022 |
HD 115404 A c Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1235of 1771
top 69.7%
This planet
12.50R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | HD 115404 A c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 12.50 | 11.21 |
| Mass (M⊕) | 1.00 | 3,279.67 | 317.83 |
| Density (g/cm³) | 5.51 | 9.23 | 1.33 |
| Surface Gravity (g) | 1.00 | 20.99 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 3,279.671 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
HD
HD 115404 A
HIP
HIP 64797 A
TIC
TIC 373765355
Gaia DR2
Gaia DR2 3936909723803146368
Gaia DR3
Gaia DR3 3936909723803146368
System
HIP 64797 A
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts about 41.94 Earth years on a mildly elliptical path at a mean orbital distance of 11.3640 AU.
Eq. Temperature
—
Insolation (S⊕)
—
Earth = 1.00
Earth Similarity (ESI)
0.380
0 = alien, 1 = Earth-identical
Discovery Paper
Primary reference
Feng et al. 2022Instrument
Multiple Instruments
Publication
2022-09
Observation locale
Ground
Discovery cohort
Planets confirmed in 2022 at Multiple Observatories (12 shown).
Host System: HD 115404 A
Spectral Class
K-type orange
Effective Temperature
5,019 K — cooler than the Sun (5,778 K)
Estimated Age
—
Stellar Radius
0.727 R☉
Stellar Mass
0.830 M☉
Metallicity [Fe/H]
-0.16
Extended Stellar Properties
Surface gravity (log g)
4.634 dex
Stellar density
3.045 g/cm³
Rotation period
19.00 days
Metallicity ratio
[M/H]
Multi-band Host Photometry — 7 bands
Astrometric Data
Parallax
91.033 mas
Total Proper Motion
688.892 mas/yr
PM Right Ascension
636.03 mas/yr
PM Declination
-264.64 mas/yr
Galactic Cartesian (pc)
x = -0.903 · y = -0.315 · z = 0.293
Equatorial (J2000)
RA 199.21558° · Dec 17.01604°
Galactic ℓ, b
334.410° · 78.303°
Ecliptic λ, β
190.802° · 23.184°
HTM-20 index
1316573270
Observation Record
Photometric series
1
Stellar spectra
1
Archive notes
1
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