EPIC 201754305 d
EPIC 201754305 d is a terrestrial planet orbiting the K3 V star K2-16 in the constellation Virgo. It lies about 1,093 light-years from Earth and was discovered in 2019 using the transit method.
How Big Is EPIC 201754305 d?
EPIC 201754305 d has a radius of 1.03 times that of Earth.
Is EPIC 201754305 d in the Habitable Zone?
The position of EPIC 201754305 d relative to the habitable zone of K2-16 cannot be precisely determined from the available orbital data.
Habitable zone of K2-16: 0.352–0.861 AU (conservative: 0.446–0.816 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 201754305 d — one full orbit around K2-16 — lasts 2.72 Earth days, shorter than Mercury's 88-day year.
How Was EPIC 201754305 d Discovered?
EPIC 201754305 d 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 201754305 d?
EPIC 201754305 d is 1,092.5 light-years (335.0 parsecs) from Earth. Light arriving here tonight left the planet about 1,093 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 19,228,000 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 201754305 d scores 0.30, ranking #1,319 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: K2-16
K2-16
- Spectral type
- K3 V
- Surface temperature
- 4,742 K (Sun: 5,772 K)
- Mass
- 0.68 M☉
- Radius
- 0.66 R☉
The K2-16 Planetary System
EPIC 201754305 d is one of 3 known planets in the K2-16 system. Its siblings:
EPIC 201754305 d — Complete Data
| Radius | 1.030 Earth radii (0.092 Jupiter radii) |
|---|---|
| Orbital period | 2.72 days |
| Earth Similarity Index | 0.30 |
| Distance from Earth | 1,092.5 light-years (335.0 parsecs) |
| Constellation | Virgo |
| Discovery method | Transit |
| Discovery facility | K2 |
| Discovery year | 2019 |
Data: NASA Exoplanet Archive, last updated 2019-06-03. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About EPIC 201754305 d
Is EPIC 201754305 d habitable?
EPIC 201754305 d is not known to orbit within the habitable zone of K2-16, and as a terrestrial planet it is an unlikely candidate for life as we know it.
How far away is EPIC 201754305 d?
EPIC 201754305 d is about 1,093 light-years from Earth in the constellation Virgo. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 19,228,000 years to get there.
How big is EPIC 201754305 d compared to Earth?
EPIC 201754305 d has 1.03 times the radius of Earth.
How long is a year on EPIC 201754305 d?
One orbit around K2-16 takes 2.7 Earth days — short enough that 134 of its years would fit into one Earth year.
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