Key parameters at a glance

A radius of 12.60 Earth radii
A mass of 2,510.53 Earth masses
Surface gravity around 15.81 g
An orbital period of 32,669.222 days
Semi-major axis 20.2470 AU
Distance from Earth 127.10 light-years
Earth Similarity Index 0.415
Travel time at Voyager 1 speed 2,241,340 years

HD 11505 b Planet Profile

Physical Specs

Radius

12.60 R⊕

Radius (Jupiter)

1.120 R♃

Mass

2,510.53 M⊕

Mass (Jupiter)

7.899 M♃

Density

6.90 g/cm³

Surface Gravity

15.81 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.415

HZ Position Unknown

Controversial No

Discovery

Year 2022

Method Radial Velocity

Facility Multiple Observatories

Telescope Multiple Telescopes

Size rank in cohort

Rank by radius

#1179of 1771

top 66.5%

This planet

12.60R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

Kepler-419 c 12.60 R⊕ 2MASS J04414489+2301513 b 12.60 R⊕ HD 47536 b 12.60 R⊕

Metric	Earth	HD 11505 b	Jupiter
Radius (R⊕)	1.00	12.60	11.21
Mass (M⊕)	1.00	2,510.53	317.83
Density (g/cm³)	5.51	6.90	1.33
Surface Gravity (g)	1.00	15.81	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	2,510.527 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

HD 11505

TIC

TIC 328159699

Gaia DR2

Gaia DR2 2505825177666430592

Gaia DR3

Gaia DR3 2505825177666430592

System

HD 11505

Percentile among Gas Giant cohort

Radius 12.600 R⊕ · percentile 31 / cohort 1771

Mass 2,510.527 M⊕ · percentile 83 / cohort 1747

Orbital period 32,669.22 d · percentile 99 / cohort 1533

Distance 38.97 pc · percentile 13 / cohort 1759

ESI 0.415 · percentile 90 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

32,669.222 days

Semi-major axis

20.2470 AU

Eccentricity

0.144

Inclination

87.51 °

Year Length

A year here lasts about 89.44 Earth years on a mildly elliptical path at a mean orbital distance of 20.2470 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.415

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Feng et al. 2022

Instrument

Multiple Instruments

Publication

2022-09

Observation locale

Ground

Discovery cohort

Planets confirmed in 2022 at Multiple Observatories (12 shown).

Kepler-138 e · Rocky Terrestrial HD 93351 b · Super-Earth GJ 1002 b · Rocky Terrestrial GJ 2030 b · Sub-Neptune GJ 3929 c · Sub-Neptune HD 217786 c · Sub-Neptune GJ 1002 c · Rocky Terrestrial HD 155918 b · Sub-Neptune HD 213519 b · Sub-Neptune HD 191939 g · Sub-Neptune GJ 514 b · Sub-Neptune HD 12235 b · Sub-Neptune

Host System: HD 11505

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,757 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

1.196 R☉

Stellar Mass

1.030 M☉

Metallicity [Fe/H]

-0.22

Extended Stellar Properties

Surface gravity (log g)

4.296 dex

Stellar density

0.849 g/cm³

Metallicity ratio

[M/H]

Distance

38.97 parsec

Light-years 127.10 ly

V-band magnitude

7.43 mag

Voyager-speed travel 2,241,340 yr

Multi-band Host Photometry — 7 bands

Astrometric Data

Parallax

25.634 mas

Total Proper Motion

395.142 mas/yr

PM Right Ascension

-186.34 mas/yr

PM Declination

-348.45 mas/yr

Galactic Cartesian (pc)

x = 0.880 · y = 0.474 · z = -0.023

Equatorial (J2000)

RA 28.27503° · Dec -1.32844°

Galactic ℓ, b

155.327° · -60.263°

Ecliptic λ, β

25.778° · -12.102°

HTM-20 index

1222948458