Key parameters at a glance
- A radius of 12.30 Earth radii
- A mass of 4,068.20 Earth masses
- Surface gravity around 26.89 g
- An orbital period of 26,500.000 days
- Semi-major axis 18.2000 AU
- Distance from Earth 167.19 light-years
- Earth Similarity Index 0.349
- Travel time at Voyager 1 speed 2,948,410 years
2 siblings around HD 11506
HD 11506 d 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 11506 c | Gas Giant | 14.00 | 127.13 | 223.920 | — | 2008 |
| HD 11506 b | Gas Giant | 12.90 | 1,551.00 | 1,617.700 | — | 2007 |
| HD 11506 d this | Gas Giant | 12.30 | 4,068.20 | 26,500.000 | — | 2022 |
HD 11506 d Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1349of 1771
top 76.1%
This planet
12.30R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | HD 11506 d | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 12.30 | 11.21 |
| Mass (M⊕) | 1.00 | 4,068.20 | 317.83 |
| Density (g/cm³) | 5.51 | 12.00 | 1.33 |
| Surface Gravity (g) | 1.00 | 26.89 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 4,068.204 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
HD
HD 11506
HIP
HIP 8770
TIC
TIC 266680498
Gaia DR2
Gaia DR2 5137855525488932864
Gaia DR3
Gaia DR3 5137855525488932864
System
HD 11506
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts about 72.55 Earth years on a mildly elliptical path at a mean orbital distance of 18.2000 AU.
Extended Orbital Architecture
RV semi-amplitude (K)
56.066 m/s
Transit mid-time (BJD)
2,452,015.5000
Long. of periastron (ω)
111.00°
Angular separation (arcsec)
355.00000
Eq. Temperature
—
Insolation (S⊕)
—
Earth = 1.00
Earth Similarity (ESI)
0.349
0 = alien, 1 = Earth-identical
Detection Signatures
Radial velocity
Stellar wobble has been measured spectroscopically.
Astrometry
Positional wobble of the host star was measured.
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 11506
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
6,123 K — hotter than the Sun (5,778 K)
Estimated Age
2.50 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.240 R☉
Stellar Mass
1.220 M☉
Metallicity [Fe/H]
0.30
Extended Stellar Properties
Surface gravity (log g)
4.390 dex
Stellar density
0.641 g/cm³
Systemic radial velocity
-7.53 km/s
Rotational v·sin i
5.50 km/s
Rotation period
15.00 days
Activity index (log R'HK)
-5.060
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
19.479 mas
Total Proper Motion
100.159 mas/yr
PM Right Ascension
21.91 mas/yr
PM Declination
-97.73 mas/yr
Galactic Cartesian (pc)
x = 0.831 · y = 0.446 · z = -0.334
Equatorial (J2000)
RA 28.21066° · Dec -19.50740°
Galactic ℓ, b
187.759° · -73.995°
Ecliptic λ, β
18.376° · -28.922°
HTM-20 index
-891410030
Observation Record
Photometric series
1
RV measurements
1
Stellar spectra
3
Archive notes
2
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