BD-11 4672 b
BD-11 4672 b is a cold gas giant orbiting BD-11 4672 in the constellation Scutum. It lies about 89 light-years from Earth and was discovered in 2014 using the radial velocity method.
Is BD-11 4672 b in the Habitable Zone?
BD-11 4672 b orbits beyond the outer edge of the habitable zone of BD-11 4672. At that distance, any surface water would almost certainly be frozen.
Habitable zone of BD-11 4672: 0.316–0.780 AU (conservative: 0.401–0.739 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 BD-11 4672 b — one full orbit around BD-11 4672 — lasts 1,634.0 Earth days, longer than an Earth year. It orbits at an average distance of 2.360 AU. Its orbit is mildly elliptical (eccentricity 0.05).
How Was BD-11 4672 b Discovered?
BD-11 4672 b was discovered in 2014 using the radial velocity method, with observations from La Silla 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 BD-11 4672 b?
BD-11 4672 b is 88.6 light-years (27.2 parsecs) from Earth. Light arriving here tonight left the planet around the year 1938. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 1,559,360 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. BD-11 4672 b scores 0.09, ranking #4,493 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: BD-11 4672
BD-11 4672
- Surface temperature
- 4,550 K (Sun: 5,772 K)
- Mass
- 0.65 M☉
- Radius
- 0.64 R☉
- Luminosity
- 0.1570 L☉
- Age
- 7.4 billion years (Sun: 4.6)
The BD-11 4672 Planetary System
BD-11 4672 b is one of 2 known planets in the BD-11 4672 system. Its siblings:
- BD-11 4672 c (Neptune-like)
BD-11 4672 b — Complete Data
| Mass (best estimate) | 206.59 Earth masses |
|---|---|
| Orbital period | 1,634.00 days |
| Orbital distance | 2.360 AU |
| Eccentricity | 0.050 |
| Earth Similarity Index | 0.09 |
| Distance from Earth | 88.6 light-years (27.2 parsecs) |
| Constellation | Scutum |
| Discovery method | Radial Velocity |
| Discovery facility | La Silla Observatory |
| Discovery year | 2014 |
Data: NASA Exoplanet Archive, last updated 2020-07-17. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About BD-11 4672 b
Is BD-11 4672 b habitable?
No — BD-11 4672 b orbits outside the habitable zone of BD-11 4672 and is likely too cold for liquid water on its surface.
How far away is BD-11 4672 b?
BD-11 4672 b is about 89 light-years from Earth in the constellation Scutum. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 1,559,360 years to get there.
How long is a year on BD-11 4672 b?
One orbit around BD-11 4672 takes 1,634.0 Earth days.
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