USco1621 b

A confirmed exoplanet orbiting USco1621 A.

Compared with Earth

Mass
About 5,085 times Earth's mass.
Temperature
About 1,997 °C (3,626 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.

Planet

Radius
Unknown
Mass
5,085 × Earth
Density
Unknown
Equilibrium temperature
2,270 K
Starlight received
Unknown
Orbital period
Unknown
Average distance from its star
2,880 AU

Star

Host star
USco1621 A
Spectral class
M — red dwarf
Surface temperature
3,460 K
Radius
Unknown
Mass
0.36 × Sun
Age
0.0075 billion years

System

Distance from Earth
449.8 light-years (137.9 parsecs)
Stars in system
1
Known planets
1

Discovery

Year
2019
Method
Imaging
Facility
Multiple Observatories

Data from the NASA Exoplanet Archive, synced October 14, 2026.