Key parameters at a glance
- A radius of 13.00 Earth radii
- A mass of 111.24 Earth masses
- Surface gravity around 0.66 g
- An orbital period of 566.000 days
- Semi-major axis 1.3100 AU
- Distance from Earth 132.25 light-years
- Earth Similarity Index 0.256
- Travel time at Voyager 1 speed 2,332,155 years
1 sibling around HD 215497
HD 215497 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 215497 b | Unclassified | — | 1,588.82 | 3.934 | — | 2009 |
| HD 215497 c this | Gas Giant | 13.00 | 111.24 | 566.000 | — | 2009 |
HD 215497 c Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#960of 1771
top 54.2%
This planet
13.00R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | HD 215497 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 13.00 | 11.21 |
| Mass (M⊕) | 1.00 | 111.24 | 317.83 |
| Density (g/cm³) | 5.51 | 0.28 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.66 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 111.240 M⊕ | Direct mass measurement (not derived). |
| Minimum mass (M sin i) | 104.300 M⊕ | Lower bound from radial-velocity fitting. |
Star Catalogue Identifiers
HD
HD 215497
HIP
HIP 112441
TIC
TIC 469943599
Gaia DR2
Gaia DR2 6504232472302122624
Gaia DR3
Gaia DR3 6504232472302122624
System
HD 215497
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts about 1.55 Earth years on a highly eccentric trajectory at a mean orbital distance of 1.3100 AU.
Eq. Temperature
—
Insolation (S⊕)
—
Earth = 1.00
Earth Similarity (ESI)
0.256
0 = alien, 1 = Earth-identical
Discovery Paper
Primary reference
Lo Curto et al. 2010Instrument
HARPS Spectrograph
Publication
2010-03
Observation locale
Ground
Discovery cohort
Planets confirmed in 2009 at La Silla Observatory (12 shown).
Host System: HD 215497
Spectral Class
K-type orange
Effective Temperature
5,113 K — cooler than the Sun (5,778 K)
Estimated Age
5.80 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.850 R☉
Stellar Mass
0.920 M☉
Metallicity [Fe/H]
0.23
Extended Stellar Properties
Surface gravity (log g)
4.310 dex
Stellar density
1.978 g/cm³
Systemic radial velocity
49.31 km/s
Rotational v·sin i
1.67 km/s
Activity index (log R'HK)
-5.070
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
24.634 mas
Total Proper Motion
81.928 mas/yr
PM Right Ascension
-54.66 mas/yr
PM Declination
-61.03 mas/yr
Galactic Cartesian (pc)
x = 0.523 · y = -0.173 · z = -0.835
Equatorial (J2000)
RA 341.65271° · Dec -56.59980°
Galactic ℓ, b
331.295° · -53.102°
Ecliptic λ, β
316.773° · -44.189°
HTM-20 index
1493825013
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