Key parameters at a glance

A radius of 13.60 Earth radii
A mass of 432.25 Earth masses
Surface gravity around 2.34 g
An orbital period of 307.880 days
Semi-major axis 0.8300 AU
Distance from Earth 174.89 light-years
Earth Similarity Index 0.334
Travel time at Voyager 1 speed 3,084,209 years

BD+45 564 b Planet Profile

Physical Specs

Radius

13.60 R⊕

Radius (Jupiter)

1.210 R♃

Mass

432.25 M⊕

Mass (Jupiter)

1.360 M♃

Density

0.94 g/cm³

Surface Gravity

2.34 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.334

HZ Position Unknown

Controversial No

Discovery

Year 2021

Method Radial Velocity

Facility Haute-Provence Observatory

Telescope 1.93 m Telescope

Size rank in cohort

Rank by radius

#609of 1771

top 34.3%

This planet

13.60R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HD 19994 b 13.60 R⊕ HD 205739 b 13.60 R⊕ HD 79498 b 13.60 R⊕

Metric	Earth	BD+45 564 b	Jupiter
Radius (R⊕)	1.00	13.60	11.21
Mass (M⊕)	1.00	432.25	317.83
Density (g/cm³)	5.51	0.94	1.33
Surface Gravity (g)	1.00	2.34	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Minimum mass (M sin i)	432.247 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

TIC

TIC 292607437

Gaia DR2

Gaia DR2 353030751066772480

Gaia DR3

Gaia DR3 353030751066772480

System

BD+45 564

Percentile among Gas Giant cohort

Radius 13.600 R⊕ · percentile 63 / cohort 1771

Mass 432.247 M⊕ · percentile 44 / cohort 1747

Orbital period 307.88 d · percentile 61 / cohort 1533

Distance 53.62 pc · percentile 22 / cohort 1759

ESI 0.334 · percentile 66 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

307.880 days

Semi-major axis

0.8300 AU

Eccentricity

0.120

Inclination

2.58 °

Year Length

A year here lasts approximately 307.88 Earth days (84.3% of a terrestrial year) on a mildly elliptical path at a mean orbital distance of 0.8300 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.334

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Dalal et al. 2021

Instrument

SOPHIE Spectrograph

Publication

2021-07

Observation locale

Ground

Discovery cohort

Planets confirmed in 2021 at Haute-Provence Observatory (11 shown).

HD 27969 b · Gas Giant HD 109286 b · Gas Giant HD 211403 b · Gas Giant HD 80869 b · Gas Giant BD+63 1405 b · Gas Giant HD 331093 b · Gas Giant HD 95544 b · Gas Giant HD 115954 b · Gas Giant HD 124330 b · Gas Giant HD 155193 b · Gas Giant BD+55 362 b · Gas Giant

Host System: BD+45 564

Spectral Class

K-type orange

Effective Temperature

5,004 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

0.813 R☉

Stellar Mass

0.810 M☉

Metallicity [Fe/H]

-0.09

Extended Stellar Properties

Surface gravity (log g)

4.220 dex

Stellar density

2.230 g/cm³

Systemic radial velocity

-6.82 km/s

Rotational v·sin i

2.00 km/s

Metallicity ratio

[Fe/H]

Distance

53.62 parsec

Light-years 174.89 ly

V-band magnitude

9.67 mag

Voyager-speed travel 3,084,209 yr

Multi-band Host Photometry — 7 bands

Astrometric Data

Parallax

18.621 mas

Total Proper Motion

278.117 mas/yr

PM Right Ascension

278.02 mas/yr

PM Declination

-7.19 mas/yr

Galactic Cartesian (pc)

x = 0.584 · y = 0.378 · z = 0.718

Equatorial (J2000)

RA 32.94705° · Dec 45.92422°

Galactic ℓ, b

137.232° · -14.705°

Ecliptic λ, β

47.309° · 30.574°

HTM-20 index

-826687098

Similar Worlds

HS Psc b

Gas Giant · K-type orange

Radius 13.60 R⊕ · 122.8 ly

HD 185283 b

Gas Giant · K-type orange

Radius 13.60 R⊕ · 102.4 ly

HD 331093 b

Gas Giant · K-type orange

Radius 13.60 R⊕ · 163.7 ly

HD 167042 b

Gas Giant · K-type orange

Radius 13.60 R⊕ · 162.0 ly

HD 10442 b

Gas Giant · K-type orange

Radius 13.60 R⊕ · 441.5 ly

HD 83443 c

Gas Giant · K-type orange

Radius 13.60 R⊕ · 133.4 ly

Explore Related Categories

Gas Giant Planets Radial Velocity Discoveries Haute-Provence Observatory Mission K-type orange Hosts