HD 93351 c
HD 93351 c is a exoplanet orbiting HD 93351 in the constellation Sextans. It lies about 183 light-years from Earth and was discovered in 2022 using the radial velocity method.
Is HD 93351 c in the Habitable Zone?
The position of HD 93351 c relative to the habitable zone of HD 93351 cannot be precisely determined from the available orbital data.
Orbit and Year Length
A year on HD 93351 c — one full orbit around HD 93351 — lasts 14,010.3 Earth days, longer than Jupiter's 12-year orbit. It orbits at an average distance of 11.154 AU. Its orbit is mildly elliptical (eccentricity 0.11).
How Was HD 93351 c Discovered?
HD 93351 c was discovered in 2022 using the radial velocity method, with observations from Multiple Observatories.
The radial velocity method measures the subtle wobble of a star caused by the gravitational pull of an orbiting planet, visible as periodic shifts in the star's light spectrum. The size of the wobble reveals the planet's minimum mass.
How Far Away Is HD 93351 c?
HD 93351 c is 183.2 light-years (56.2 parsecs) from Earth. Light arriving here tonight left the planet around the year 1843. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 3,224,320 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. HD 93351 c scores 0.08, ranking #4,718 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: HD 93351
HD 93351
- Mass
- 0.94 M☉
The HD 93351 Planetary System
HD 93351 c is one of 2 known planets in the HD 93351 system. Its siblings:
- HD 93351 b (Super Earth)
HD 93351 c — Complete Data
| Mass | 4,154.02 Earth masses (13.070 Jupiter masses) |
|---|---|
| Orbital period | 14,010.29 days |
| Orbital distance | 11.154 AU |
| Eccentricity | 0.109 |
| Earth Similarity Index | 0.08 |
| Distance from Earth | 183.2 light-years (56.2 parsecs) |
| Constellation | Sextans |
| Discovery method | Radial Velocity |
| Discovery facility | Multiple Observatories |
| Discovery year | 2022 |
Data: NASA Exoplanet Archive, last updated 2023-06-12. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About HD 93351 c
Is HD 93351 c habitable?
HD 93351 c is not known to orbit within the habitable zone of HD 93351.
How far away is HD 93351 c?
HD 93351 c is about 183 light-years from Earth in the constellation Sextans. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 3,224,320 years to get there.
How long is a year on HD 93351 c?
One orbit around HD 93351 takes 14,010.3 Earth days.
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