EPIC 201841433 b
EPIC 201841433 b is a terrestrial planet orbiting EPIC 201841433 in the constellation Virgo. It lies about 1,424 light-years from Earth and was discovered in 2019 using the transit method.
How Big Is EPIC 201841433 b?
EPIC 201841433 b has a radius of 1.04 times that of Earth.
Is EPIC 201841433 b in the Habitable Zone?
EPIC 201841433 b orbits inside the inner edge of the habitable zone of EPIC 201841433. So close to its star, surface conditions are far too hot for liquid water.
Habitable zone of EPIC 201841433: 0.376–0.906 AU (conservative: 0.476–0.859 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.
See the full interactive habitable-zone view in the Exoplanet Explorer app ›
Orbit and Year Length
A year on EPIC 201841433 b — one full orbit around EPIC 201841433 — lasts 4.17 Earth days, shorter than Mercury's 88-day year. It orbits at an average distance of 0.035 AU — closer to its star than Mercury is to the Sun.
How Was EPIC 201841433 b Discovered?
EPIC 201841433 b was discovered in 2019 using the transit method, with observations from K2.
The transit method watches a star for the tiny, regular dip in brightness that occurs when a planet crosses in front of it. The depth and timing of these dips reveal the planet's size and orbital period.
How Far Away Is EPIC 201841433 b?
EPIC 201841433 b is 1,423.6 light-years (436.5 parsecs) from Earth. Light arriving here tonight left the planet about 1,424 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 25,055,360 years to make the journey.
Earth Similarity Index
The Earth Similarity Index (ESI) scores how physically similar a planet is to Earth, from 0 to 1, based on radius, density, escape velocity and surface temperature. EPIC 201841433 b scores 0.30, ranking #1,371 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: EPIC 201841433
EPIC 201841433
- Surface temperature
- 5,053 K (Sun: 5,772 K)
- Mass
- 0.80 M☉
- Radius
- 0.63 R☉
Planetary System
EPIC 201841433 b is the only planet known to orbit EPIC 201841433 so far.
EPIC 201841433 b — Complete Data
| Radius | 1.040 Earth radii (0.093 Jupiter radii) |
|---|---|
| Orbital period | 4.17 days |
| Orbital distance | 0.035 AU |
| Earth Similarity Index | 0.30 |
| Distance from Earth | 1,423.6 light-years (436.5 parsecs) |
| Constellation | Virgo |
| Discovery method | Transit |
| Discovery facility | K2 |
| Discovery year | 2019 |
Data: NASA Exoplanet Archive, last updated 2020-11-13. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About EPIC 201841433 b
Is EPIC 201841433 b habitable?
No — EPIC 201841433 b orbits too close to its star and is too hot for liquid water to exist on its surface.
How far away is EPIC 201841433 b?
EPIC 201841433 b is about 1,424 light-years from Earth in the constellation Virgo. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 25,055,360 years to get there.
How big is EPIC 201841433 b compared to Earth?
EPIC 201841433 b has 1.04 times the radius of Earth.
How long is a year on EPIC 201841433 b?
One orbit around EPIC 201841433 takes 4.2 Earth days — short enough that 88 of its years would fit into one Earth year.
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