Key parameters at a glance

A radius of 13.70 Earth radii
A mass of 400.40 Earth masses
Surface gravity around 2.13 g
An orbital period of 1,311.000 days
Semi-major axis 2.5600 AU
Distance from Earth 107.58 light-years
Earth Similarity Index 0.327
Travel time at Voyager 1 speed 1,897,126 years

HD 216435 b Planet Profile

Physical Specs

Radius

13.70 R⊕

Radius (Jupiter)

1.220 R♃

Mass

400.40 M⊕

Mass (Jupiter)

1.260 M♃

Density

0.86 g/cm³

Surface Gravity

2.13 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.327

HZ Position Unknown

Controversial No

Discovery

Year 2002

Method Radial Velocity

Facility Anglo-Australian Telescope

Telescope 3.9 m Anglo-Australian Telescope

Size rank in cohort

Rank by radius

#554of 1771

top 31.2%

This planet

13.70R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HD 148164 b 13.70 R⊕ HD 114783 b 13.70 R⊕ HD 159243 b 13.70 R⊕

Metric	Earth	HD 216435 b	Jupiter
Radius (R⊕)	1.00	13.70	11.21
Mass (M⊕)	1.00	400.40	317.83
Density (g/cm³)	5.51	0.86	1.33
Surface Gravity (g)	1.00	2.13	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Minimum mass (M sin i)	400.400 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD 216435

HIP

HIP 113044

TIC

TIC 161314759

Gaia DR2

Gaia DR2 6515731817739456256

Gaia DR3

Gaia DR3 6515731817739456256

System

HD 216435

Percentile among Gas Giant cohort

Radius 13.700 R⊕ · percentile 66 / cohort 1771

Mass 400.400 M⊕ · percentile 42 / cohort 1747

Orbital period 1,311.00 d · percentile 81 / cohort 1533

Distance 32.98 pc · percentile 9 / cohort 1759

ESI 0.327 · percentile 65 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

1,311.000 days

Semi-major axis

2.5600 AU

Eccentricity

0.070

Inclination

— °

Year Length

A year here lasts about 3.59 Earth years on a nearly circular orbit at a mean orbital distance of 2.5600 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.327

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Jones et al. 2003

Instrument

UCLES Spectrograph

Publication

2003-05

Observation locale

Ground

Discovery cohort

Planets confirmed in 2002 at Anglo-Australian Telescope (5 shown).

HD 2039 b · Gas Giant HD 196050 b · Gas Giant HD 216437 b · Gas Giant HD 30177 b · Gas Giant HD 76700 b · Neptune-like

Host System: HD 216435

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,999 K — hotter than the Sun (5,778 K)

Estimated Age

3.00 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.800 R☉

Stellar Mass

1.300 M☉

Metallicity [Fe/H]

0.24

Extended Stellar Properties

Surface gravity (log g)

4.154 dex

Stellar density

0.284 g/cm³

Systemic radial velocity

-1.03 km/s

Rotational v·sin i

5.80 km/s

Activity index (log R'HK)

-5.000

Metallicity ratio

[Fe/H]

Distance

32.98 parsec

Light-years 107.58 ly

V-band magnitude

6.03 mag

Voyager-speed travel 1,897,126 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

30.290 mas

Total Proper Motion

232.563 mas/yr

PM Right Ascension

218.02 mas/yr

PM Declination

-80.96 mas/yr

Galactic Cartesian (pc)

x = 0.634 · y = -0.189 · z = -0.750

Equatorial (J2000)

RA 343.40947° · Dec -48.59863°

Galactic ℓ, b

341.692° · -58.711°

Ecliptic λ, β

323.343° · -37.813°

HTM-20 index

-709946528

Observation Record

Photometric series

RV measurements

Archive notes