HD 114783 b
HD 114783 b is a cold gas giant orbiting the K0 star HD 114783 in the constellation Virgo. It lies about 69 light-years from Earth and was discovered in 2001 using the radial velocity method.
Is HD 114783 b in the Habitable Zone?
The position of HD 114783 b relative to the habitable zone of HD 114783 cannot be precisely determined from the available orbital data.
Orbit and Year Length
A year on HD 114783 b — one full orbit around HD 114783 — lasts 493.7 Earth days, longer than an Earth year. It orbits at an average distance of 1.160 AU. Its orbit is mildly elliptical (eccentricity 0.14).
How Was HD 114783 b Discovered?
HD 114783 b was discovered in 2001 using the radial velocity method, with observations from W. M. Keck Observatory.
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 114783 b?
HD 114783 b is 68.7 light-years (21.1 parsecs) from Earth. Light arriving here tonight left the planet around the year 1958. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 1,209,120 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 114783 b scores 0.29, ranking #1,934 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: HD 114783
HD 114783
- Spectral type
- K0
- Surface temperature
- 5,135 K (Sun: 5,772 K)
- Mass
- 0.85 M☉
The HD 114783 Planetary System
HD 114783 b is one of 2 known planets in the HD 114783 system. Its siblings:
- HD 114783 c (Cold Gas Giant)
HD 114783 b — Complete Data
| Mass (best estimate) | 349.60 Earth masses |
|---|---|
| Orbital period | 493.70 days |
| Orbital distance | 1.160 AU |
| Eccentricity | 0.144 |
| Earth Similarity Index | 0.29 |
| Distance from Earth | 68.7 light-years (21.1 parsecs) |
| Constellation | Virgo |
| Discovery method | Radial Velocity |
| Discovery facility | W. M. Keck Observatory |
| Discovery year | 2001 |
Data: NASA Exoplanet Archive, last updated 2014-05-14. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About HD 114783 b
Is HD 114783 b habitable?
HD 114783 b is not known to orbit within the habitable zone of HD 114783, and as a cold gas giant it is an unlikely candidate for life as we know it.
How far away is HD 114783 b?
HD 114783 b is about 69 light-years from Earth in the constellation Virgo. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 1,209,120 years to get there.
How long is a year on HD 114783 b?
One orbit around HD 114783 takes 493.7 Earth days.
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