Key parameters at a glance

A radius of 13.90 Earth radii
A mass of 249.05 Earth masses
Surface gravity around 1.29 g
An orbital period of 75.220 days
Semi-major axis 0.3620 AU
Distance from Earth 221.09 light-years
Earth Similarity Index 0.290
Travel time at Voyager 1 speed 3,898,860 years

1 sibling around HD 163607

HD 163607 b 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 163607 b this	Gas Giant	13.90	249.05	75.220	—	2010
HD 163607 c	Gas Giant	13.30	699.54	1,272.000	—	2010

HD 163607 b Planet Profile

Physical Specs

Radius

13.90 R⊕

Radius (Jupiter)

1.240 R♃

Mass

249.05 M⊕

Mass (Jupiter)

0.784 M♃

Density

0.51 g/cm³

Surface Gravity

1.29 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.290

HZ Position Unknown

Controversial No

Discovery

Year 2010

Method Radial Velocity

Facility W. M. Keck Observatory

Telescope 10 m Keck I Telescope

Size rank in cohort

Rank by radius

#456of 1771

top 25.7%

This planet

13.90R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

24 Sex c 13.90 R⊕ HD 148156 b 13.90 R⊕ HD 134987 c 13.90 R⊕

Metric	Earth	HD 163607 b	Jupiter
Radius (R⊕)	1.00	13.90	11.21
Mass (M⊕)	1.00	249.05	317.83
Density (g/cm³)	5.51	0.51	1.33
Surface Gravity (g)	1.00	1.29	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Minimum mass (M sin i)	249.052 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD 163607

HIP

HIP 87601

TIC

TIC 232620788

Gaia DR2

Gaia DR2 1418519292895059840

Gaia DR3

Gaia DR3 1418519292895059840

System

HD 163607

Percentile among Gas Giant cohort

Radius 13.900 R⊕ · percentile 72 / cohort 1771

Mass 249.052 M⊕ · percentile 27 / cohort 1747

Orbital period 75.22 d · percentile 52 / cohort 1533

Distance 67.79 pc · percentile 27 / cohort 1759

ESI 0.290 · percentile 55 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

75.220 days

Semi-major axis

0.3620 AU

Eccentricity

0.744

Inclination

— °

Year Length

A year here lasts approximately 75.22 Earth days (20.6% of a terrestrial year) on a highly eccentric trajectory at a mean orbital distance of 0.3620 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.290

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Giguere et al. 2012

Instrument

HIRES Spectrometer

Publication

2012-01

Observation locale

Ground

Discovery cohort

Planets confirmed in 2010 at W. M. Keck Observatory (12 shown).

HD 156668 b · Super-Earth HD 1461 b · Sub-Neptune GJ 876 e · Sub-Neptune HAT-P-17 c · Gas Giant HD 97658 b · Sub-Neptune HD 163607 c · Gas Giant HD 177830 c · Neptune-like HD 218566 b · Neptune-like HD 102956 b · Gas Giant GJ 1148 b · Gas Giant HD 31253 b · Gas Giant HD 164509 b · Gas Giant

Host System: HD 163607

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,522 K — cooler than the Sun (5,778 K)

Estimated Age

8.60 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

1.760 R☉

Stellar Mass

1.120 M☉

Metallicity [Fe/H]

0.21

Extended Stellar Properties

Surface gravity (log g)

3.970 dex

Stellar density

0.248 g/cm³

Systemic radial velocity

-0.02 km/s

Rotational v·sin i

1.49 km/s

Metallicity ratio

[Fe/H]

Distance

67.79 parsec

Light-years 221.09 ly

V-band magnitude

8.00 mag

Voyager-speed travel 3,898,860 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

14.724 mas

Total Proper Motion

141.597 mas/yr

PM Right Ascension

-75.84 mas/yr

PM Declination

119.58 mas/yr

Galactic Cartesian (pc)

x = -0.015 · y = -0.553 · z = 0.833

Equatorial (J2000)

RA 268.41814° · Dec 56.39247°

Galactic ℓ, b

84.614° · 30.173°

Ecliptic λ, β

265.044° · 79.805°

HTM-20 index

224186326

Observation Record

Photometric series

RV measurements

Stellar spectra