Kepler-328 c
Kepler-328 c is a Neptune-like planet orbiting Kepler-328 in the constellation Cygnus. It lies about 7,219 light-years from Earth and was discovered in 2013 using the transit method.
How Big Is Kepler-328 c?
Kepler-328 c has a radius of 5.40 times that of Earth. Its mass is 39.4 times that of Earth.
Is Kepler-328 c in the Habitable Zone?
The position of Kepler-328 c relative to the habitable zone of Kepler-328 cannot be precisely determined from the available orbital data.
Orbit and Year Length
A year on Kepler-328 c — one full orbit around Kepler-328 — lasts 71.3 Earth days, shorter than Mercury's 88-day year.
How Was Kepler-328 c Discovered?
Kepler-328 c was discovered in 2013 using the transit method, with observations from Kepler.
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 Kepler-328 c?
Kepler-328 c is 7,218.5 light-years (2,213.2 parsecs) from Earth. Light arriving here tonight left the planet about 7,219 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 127,045,600 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. Kepler-328 c scores 0.19, ranking #3,954 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: Kepler-328
Kepler-328
- Mass
- 1.15 M☉
- Radius
- 1.06 R☉
The Kepler-328 Planetary System
Kepler-328 c is one of 2 known planets in the Kepler-328 system. Its siblings:
- Kepler-328 b (Super Earth)
Kepler-328 c — Complete Data
| Radius | 5.400 Earth radii (0.482 Jupiter radii) |
|---|---|
| Mass | 39.40 Earth masses (0.124 Jupiter masses) |
| Orbital period | 71.31 days |
| Earth Similarity Index | 0.19 |
| Distance from Earth | 7,218.5 light-years (2,213.2 parsecs) |
| Constellation | Cygnus |
| Discovery method | Transit |
| Discovery facility | Kepler |
| Discovery year | 2013 |
Data: NASA Exoplanet Archive, last updated 2014-05-14. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About Kepler-328 c
Is Kepler-328 c habitable?
Kepler-328 c is not known to orbit within the habitable zone of Kepler-328, and as a Neptune-like planet it is an unlikely candidate for life as we know it.
How far away is Kepler-328 c?
Kepler-328 c is about 7,219 light-years from Earth in the constellation Cygnus. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 127,045,600 years to get there.
How big is Kepler-328 c compared to Earth?
Kepler-328 c has 5.40 times the radius of Earth and about 39.4 times its mass.
How long is a year on Kepler-328 c?
One orbit around Kepler-328 takes 71.3 Earth days.
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