Confirmed Exoplanet Discovered 2022

KMT-2021-BLG-1077L c

A gas giant orbiting the m-type red dwarf KMT-2021-BLG-1077L, located approximately 26,875.3 light-years from Earth.

Key parameters at a glance

  • A radius of 10.60 Earth radii
  • A mass of 79.46 Earth masses
  • Surface gravity around 0.71 g
  • Semi-major axis 0.9300 AU
  • Distance from Earth 26,875.25 light-years
  • Earth Similarity Index 0.295
  • Travel time at Voyager 1 speed 473,945,085 years

1 sibling around KMT-2021-BLG-1077L

KMT-2021-BLG-1077L c 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
KMT-2021-BLG-1077L c this Gas Giant 10.60 79.46 — — 2022
KMT-2021-BLG-1077L b Neptune-like 9.86 69.92 — — 2022

KMT-2021-BLG-1077L c Planet Profile

Physical Specs

Radius
10.60 R⊕
Radius (Jupiter)
0.949 R♃
Mass
79.46 M⊕
Mass (Jupiter)
0.250 M♃
Density
0.37 g/cm³
Surface Gravity
0.71 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.295
HZ Position Unknown
Controversial No

Discovery

Year 2022
Method Microlensing
Facility KMTNet
Telescope 1.6 m wide-field telescope

Size rank in cohort

Rank by radius

#1714of 1771

top 96.7%

This planet

10.60R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HD 101930 b 10.60 R⊕ TOI-5344 b 10.60 R⊕ WASP-45 b 10.60 R⊕
Metric Earth KMT-2021-BLG-1077L c Jupiter
Radius (R⊕)1.0010.6011.21
Mass (M⊕)1.0079.46317.83
Density (g/cm³)5.510.371.33
Surface Gravity (g)1.000.712.53
Insolation (S⊕)1.00—0.037

Alternative Mass Estimates

Method Value Interpretation
Best measured mass 79.457 M⊕ Direct mass measurement (not derived).

Percentile among Gas Giant cohort

Radius 10.600 R⊕ · percentile 3 / cohort 1771
Mass 79.457 M⊕ · percentile 2 / cohort 1747
Distance 8,240.00 pc · percentile 100 / cohort 1759
ESI 0.295 · percentile 57 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period
— days
Semi-major axis
0.9300 AU
Eccentricity
—
Inclination
— °

Year Length

Orbital period for this planet has not yet been measured.

Eq. Temperature

—

 

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.295

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Han et al. 2022

Instrument

18k Mosaic CCD camera

Publication

2022-06

Observation locale

Ground

Discovery cohort

Planets confirmed in 2022 at KMTNet (12 shown).

KMT-2021-BLG-0912L b · Super-Earth KMT-2021-BLG-1391L b · Super-Earth KMT-2018-BLG-1988L b · Sub-Neptune KMT-2019-BLG-0253L b · Sub-Neptune KMT-2021-BLG-0171L b · Sub-Neptune KMT-2019-BLG-0953L b · Neptune-like OGLE-2018-BLG-1126L b · Neptune-like KMT-2021-BLG-1253L b · Neptune-like KMT-2021-BLG-2294L b · Neptune-like KMT-2021-BLG-0119L b · Gas Giant KMT-2019-BLG-0414L b · Gas Giant KMT-2019-BLG-1552L b · Gas Giant

Host System: KMT-2021-BLG-1077L

Spectral Class

M-type red dwarf

Effective Temperature

—

Estimated Age

—

Stellar Radius

—

Stellar Mass

0.140 M☉

Metallicity [Fe/H]

—

Distance
8,240.00 parsec
Light-years 26,875.25 ly
V-band magnitude
— mag
Voyager-speed travel 473,945,085 yr

Similar Worlds

OGLE-2007-BLG-349L AB c

Gas Giant · M-type red dwarf

Radius 10.70 R⊕ · 9,001.9 ly

Kepler-45 b

Gas Giant · M-type red dwarf

Radius 10.76 R⊕ · 1,245.7 ly

GJ 649 b

Gas Giant · M-type red dwarf

Radius 10.80 R⊕ · 33.9 ly

TOI-6330 b

Gas Giant · M-type red dwarf

Radius 10.89 R⊕ · 453.5 ly

TOI-5349 b

Gas Giant · M-type red dwarf

Radius 10.20 R⊕ · 614.3 ly

TOI-5007 b

Gas Giant · M-type red dwarf

Radius 11.07 R⊕ · 663.2 ly

Explore Related Categories

Gas Giant Planets Microlensing Discoveries KMTNet Mission M-type red dwarf Hosts