Key parameters at a glance

A radius of 13.70 Earth radii
A mass of 407.00 Earth masses
Surface gravity around 2.17 g
Semi-major axis 4.1800 AU
Distance from Earth 20,547.83 light-years
Earth Similarity Index 0.328
Travel time at Voyager 1 speed 362,360,927 years

UKIRT-2017-BLG-001L b Planet Profile

Physical Specs

Radius

13.70 R⊕

Radius (Jupiter)

1.220 R♃

Mass

407.00 M⊕

Mass (Jupiter)

1.280 M♃

Density

0.87 g/cm³

Surface Gravity

2.17 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.328

HZ Position Unknown

Controversial No

Discovery

Year 2018

Method Microlensing

Facility Mauna Kea Observatory

Telescope 3.8m United Kingdom Infrared Telescope (UKIRT)

Size rank in cohort

Rank by radius

#554of 1771

top 31.2%

This planet

13.70R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HD 148164 b 13.70 R⊕ HD 114783 b 13.70 R⊕ HD 159243 b 13.70 R⊕

Metric	Earth	UKIRT-2017-BLG-001L b	Jupiter
Radius (R⊕)	1.00	13.70	11.21
Mass (M⊕)	1.00	407.00	317.83
Density (g/cm³)	5.51	0.87	1.33
Surface Gravity (g)	1.00	2.17	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	407.000 M⊕	Direct mass measurement (not derived).

Percentile among Gas Giant cohort

Radius 13.700 R⊕ · percentile 66 / cohort 1771

Mass 407.000 M⊕ · percentile 43 / cohort 1747

Distance 6,300.00 pc · percentile 95 / cohort 1759

ESI 0.328 · percentile 65 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

— days

Semi-major axis

4.1800 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)

0.328

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Shvartzvald et al. 2018

Instrument

WFCAM

Publication

2018-04

Observation locale

Ground

Host System: UKIRT-2017-BLG-001L

Spectral Class

Unknown

Effective Temperature

—

Estimated Age

—

Stellar Radius

—

Stellar Mass

0.810 M☉

Metallicity [Fe/H]

—

Distance

6,300.00 parsec

Light-years 20,547.83 ly

V-band magnitude

— mag

Voyager-speed travel 362,360,927 yr

Similar Worlds

K2-2016-BLG-0005L b

Gas Giant · Unknown

Radius 13.70 R⊕ · 16,960.1 ly

KMT-2019-BLG-0578L b

Gas Giant · Unknown

Radius 13.70 R⊕ · 23,809.4 ly

KMT-2019-BLG-1339L b

Gas Giant · Unknown

Radius 13.70 R⊕ · 19,960.7 ly

KMT-2018-BLG-1996L b

Gas Giant · Unknown

Radius 13.70 R⊕ · 19,275.8 ly

KMT-2019-BLG-2783L b

Gas Giant · Unknown

Radius 13.70 R⊕ · 19,275.8 ly

KMT-2018-BLG-2602L b

Gas Giant · Unknown

Radius 13.70 R⊕ · 14,057.3 ly

Explore Related Categories

Gas Giant Planets Microlensing Discoveries Mauna Kea Observatory Mission