USco CTIO 108 b
USco CTIO 108 b is a exoplanet orbiting the M7 star USco CTIO 108 in the constellation Scorpius. It lies about 470 light-years from Earth and was discovered in 2008 using the imaging method.
Is USco CTIO 108 b in the Habitable Zone?
USco CTIO 108 b orbits beyond the outer edge of the habitable zone of USco CTIO 108. At that distance, any surface water would almost certainly be frozen.
Habitable zone of USco CTIO 108: 0.087–0.235 AU (conservative: 0.111–0.223 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
USco CTIO 108 b orbits at an average distance of 670.000 AU.
How Was USco CTIO 108 b Discovered?
USco CTIO 108 b was discovered in 2008 using the imaging method, with observations from Teide Observatory.
Direct imaging captures actual pictures of a planet by blocking out the overwhelming glare of its host star. It works best for young, hot, massive planets on wide orbits.
How Far Away Is USco CTIO 108 b?
USco CTIO 108 b is 469.7 light-years (144.0 parsecs) from Earth. Light arriving here tonight left the planet around the year 1557. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 8,266,720 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. USco CTIO 108 b scores 0.07, ranking #4,884 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: USco CTIO 108
USco CTIO 108
- Spectral type
- M7
- Surface temperature
- 2,700 K (Sun: 5,772 K)
- Mass
- 0.06 M☉
- Luminosity
- 0.0112 L☉
- Age
- 0.0 billion years (Sun: 4.6)
Planetary System
USco CTIO 108 b is the only planet known to orbit USco CTIO 108 so far.
USco CTIO 108 b — Complete Data
| Mass | 4,449.62 Earth masses (14.000 Jupiter masses) |
|---|---|
| Orbital distance | 670.000 AU |
| Earth Similarity Index | 0.07 |
| Distance from Earth | 469.7 light-years (144.0 parsecs) |
| Constellation | Scorpius |
| Discovery method | Imaging |
| Discovery facility | Teide Observatory |
| Discovery year | 2008 |
Data: NASA Exoplanet Archive, last updated 2015-05-14. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About USco CTIO 108 b
Is USco CTIO 108 b habitable?
No — USco CTIO 108 b orbits outside the habitable zone of USco CTIO 108 and is likely too cold for liquid water on its surface.
How far away is USco CTIO 108 b?
USco CTIO 108 b is about 470 light-years from Earth in the constellation Scorpius. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 8,266,720 years to get there.
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