Confirmed Exoplanet Discovered 2019

NSVS 14256825 b

A gas giant orbiting the o-type blue giant NSVS 14256825, located approximately 2,677.3 light-years from Earth.

Key parameters at a glance

  • A radius of 12.30 Earth radii
  • A mass of 4,497.29 Earth masses
  • Surface gravity around 29.73 g
  • An orbital period of 3,225.000 days
  • Semi-major axis 3.1200 AU
  • Distance from Earth 2,677.34 light-years
  • Earth Similarity Index 0.336
  • Travel time at Voyager 1 speed 47,214,881 years
brightness_6

Circumbinary planet

NSVS 14256825 b orbits a binary-star pair rather than a single host — a minority architecture in the confirmed catalogue.

NSVS 14256825 b Planet Profile

Physical Specs

Radius
12.30 R⊕
Radius (Jupiter)
1.100 R♃
Mass
4,497.29 M⊕
Mass (Jupiter)
14.150 M♃
Density
13.30 g/cm³
Surface Gravity
29.73 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.336
HZ Position Unknown
Controversial No

Discovery

Year 2019
Method Eclipse Timing Variations
Facility Multiple Observatories
Telescope Multiple Telescopes

Size rank in cohort

Rank by radius

#1349of 1771

top 76.1%

This planet

12.30R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HAT-P-13 c 12.30 R⊕ HD 22781 b 12.30 R⊕ CHXR 73 b 12.30 R⊕
Metric Earth NSVS 14256825 b Jupiter
Radius (R⊕)1.0012.3011.21
Mass (M⊕)1.004,497.29317.83
Density (g/cm³)5.5113.301.33
Surface Gravity (g)1.0029.732.53
Insolation (S⊕)1.00—0.037

Alternative Mass Estimates

Method Value Interpretation
Minimum mass (M sin i) 4,497.295 M⊕ Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

TIC

TIC 404635917

Gaia DR2

Gaia DR2 4245906369913936000

Gaia DR3

Gaia DR3 4245906369913936000

System

NSVS 14256825

Percentile among Gas Giant cohort

Radius 12.300 R⊕ · percentile 22 / cohort 1771
Mass 4,497.295 M⊕ · percentile 93 / cohort 1747
Orbital period 3,225.00 d · percentile 89 / cohort 1533
Distance 820.88 pc · percentile 84 / cohort 1759
ESI 0.336 · percentile 67 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period
3,225.000 days
Semi-major axis
3.1200 AU
Eccentricity
0.120
Inclination
— °

Year Length

A year here lasts about 8.83 Earth years on a mildly elliptical path at a mean orbital distance of 3.1200 AU.

Eq. Temperature

—

 

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.336

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Zhu et al. 2019

Instrument

Multiple Instruments

Publication

2019-09

Observation locale

Ground

Discovery cohort

Planets confirmed in 2019 at Multiple Observatories (8 shown).

Gl 49 b · Sub-Neptune GJ 357 c · Super-Earth GJ 357 d · Sub-Neptune HR 5183 b · Gas Giant 7 CMa c · Gas Giant HD 213885 c · Neptune-like USco1556 b · Gas Giant USco1621 b · Gas Giant

Host System: NSVS 14256825

Spectral Class

O-type blue giant

Effective Temperature

40,000 K — hotter than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

0.188 R☉

Stellar Mass

0.419 M☉

Metallicity [Fe/H]

—

Distance
820.88 parsec
Light-years 2,677.34 ly
V-band magnitude
13.30 mag
Voyager-speed travel 47,214,881 yr

Multi-band Host Photometry — 11 bands

8.514.113.09B13.30V13.25Gaia13.38TESS13.66J13.80H13.95K14.02W114.10W212.71W38.48W4

Astrometric Data

Parallax

1.193 mas

Total Proper Motion

8.142 mas/yr

PM Right Ascension

8.06 mas/yr

PM Declination

1.13 mas/yr

Galactic Cartesian (pc)

x = 0.572 · y = -0.816 · z = 0.081

Equatorial (J2000)

RA 305.00195° · Dec 4.63237°

Galactic ℓ, b

47.689° · -17.309°

Ecliptic λ, β

308.566° · 23.507°

HTM-20 index

-2020694280

Similar Worlds

NN Ser c

Gas Giant · O-type blue giant

Radius 12.60 R⊕ · 1,682.4 ly

NY Vir c

Gas Giant · O-type blue giant

Radius 12.80 R⊕ · 1,774.4 ly

NN Ser d

Gas Giant · O-type blue giant

Radius 13.30 R⊕ · 1,682.4 ly

NY Vir b

Gas Giant · O-type blue giant

Radius 13.30 R⊕ · 1,774.4 ly

Explore Related Categories

Gas Giant Planets Eclipse Timing Variations Discoveries Multiple Observatories Mission O-type blue giant Hosts