Confirmed Exoplanet Discovered 2009

BD+14 4559 b

A gas giant orbiting the k-type orange BD+14 4559, located approximately 161.0 light-years from Earth.

Key parameters at a glance

  • A radius of 13.80 Earth radii
  • A mass of 330.54 Earth masses
  • Surface gravity around 1.74 g
  • An orbital period of 268.940 days
  • Semi-major axis 0.7800 AU
  • Distance from Earth 160.96 light-years
  • Earth Similarity Index 0.311
  • Travel time at Voyager 1 speed 2,838,609 years

BD+14 4559 b Planet Profile

Physical Specs

Radius
13.80 R⊕
Radius (Jupiter)
1.230 R♃
Mass
330.54 M⊕
Mass (Jupiter)
1.040 M♃
Density
0.69 g/cm³
Surface Gravity
1.74 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.311
HZ Position Unknown
Controversial No

Discovery

Year 2009
Method Radial Velocity
Facility McDonald Observatory
Telescope 9.2 m Hobby-Eberly Telescope

Size rank in cohort

Rank by radius

#510of 1771

top 28.7%

This planet

13.80R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

GJ 179 b 13.80 R⊕ GJ 832 b 13.80 R⊕ HD 219415 b 13.80 R⊕
Metric Earth BD+14 4559 b Jupiter
Radius (R⊕)1.0013.8011.21
Mass (M⊕)1.00330.54317.83
Density (g/cm³)5.510.691.33
Surface Gravity (g)1.001.742.53
Insolation (S⊕)1.00—0.037

Alternative Mass Estimates

Method Value Interpretation
Minimum mass (M sin i) 330.543 M⊕ Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HIP

HIP 104780

TIC

TIC 230183006

Gaia DR2

Gaia DR2 1759623813132980864

Gaia DR3

Gaia DR3 1759623813132980864

System

BD+14 4559

Percentile among Gas Giant cohort

Radius 13.800 R⊕ · percentile 70 / cohort 1771
Mass 330.543 M⊕ · percentile 36 / cohort 1747
Orbital period 268.94 d · percentile 59 / cohort 1533
Distance 49.35 pc · percentile 19 / cohort 1759
ESI 0.311 · percentile 61 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period
268.940 days
Semi-major axis
0.7800 AU
Eccentricity
0.290
Inclination
— °

Year Length

A year here lasts approximately 268.94 Earth days (73.6% of a terrestrial year) on a mildly elliptical path at a mean orbital distance of 0.7800 AU.

Eq. Temperature

—

 

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.311

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Niedzielski et al. 2009

Instrument

High Resolution Spectrograph

Publication

2009-12

Observation locale

Ground

Discovery cohort

Planets confirmed in 2009 at McDonald Observatory (3 shown).

HD 240210 b · Gas Giant BD+20 2457 c · Gas Giant BD+20 2457 b · Gas Giant

Host System: BD+14 4559

Spectral Class

K-type orange

Effective Temperature

4,864 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

0.860 R☉

Stellar Mass

0.490 M☉

Metallicity [Fe/H]

0.17

Extended Stellar Properties

Surface gravity (log g)

4.260 dex

Stellar density

1.731 g/cm³

Systemic radial velocity

-44.30 km/s

Rotational v·sin i

2.50 km/s

Metallicity ratio

[Fe/H]

Distance
49.35 parsec
Light-years 160.96 ly
V-band magnitude
9.78 mag
Voyager-speed travel 2,838,609 yr

Multi-band Host Photometry — 12 bands

7.210.610.58B9.78V9.35Gaia8.75TESS8.62Ic7.88J7.46H7.34K7.21W17.35W27.29W37.18W4

Astrometric Data

Parallax

20.234 mas

Total Proper Motion

233.993 mas/yr

PM Right Ascension

233.99 mas/yr

PM Declination

-0.28 mas/yr

Galactic Cartesian (pc)

x = 0.723 · y = -0.642 · z = 0.254

Equatorial (J2000)

RA 318.40100° · Dec 14.68938°

Galactic ℓ, b

64.418° · -22.632°

Ecliptic λ, β

325.973° · 29.217°

HTM-20 index

-985203869

Similar Worlds

HD 285507 b

Gas Giant · K-type orange

Radius 13.80 R⊕ · 146.9 ly

HD 216536 b

Gas Giant · K-type orange

Radius 13.80 R⊕ · 1,227.1 ly

OGLE-2014-BLG-1760L b

Gas Giant · K-type orange

Radius 13.80 R⊕ · 23,013.6 ly

HD 99283 b

Gas Giant · K-type orange

Radius 13.80 R⊕ · 362.3 ly

Kepler-48 f

Gas Giant · K-type orange

Radius 13.80 R⊕ · 1,000.4 ly

HD 113538 c

Gas Giant · K-type orange

Radius 13.80 R⊕ · 53.1 ly

Explore Related Categories

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