mu2 Sco b
mu2 Sco b is a exoplanet orbiting the B2 IV star mu2 Sco in the constellation Scorpius. It lies about 517 light-years from Earth and was discovered in 2022 using the imaging method.
Is mu2 Sco b in the Habitable Zone?
The position of mu2 Sco b relative to the habitable zone of mu2 Sco cannot be precisely determined from the available orbital data.
Orbit and Year Length
mu2 Sco b orbits at an average distance of 242.400 AU. Its orbit is highly elliptical (eccentricity 0.56), swinging dramatically closer to and farther from its star.
How Was mu2 Sco b Discovered?
mu2 Sco b was discovered in 2022 using the imaging method, with observations from Paranal 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 mu2 Sco b?
mu2 Sco b is 516.9 light-years (158.5 parsecs) from Earth. Light arriving here tonight left the planet around the year 1510. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 9,097,440 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. mu2 Sco b scores 0.19, ranking #3,984 of 5,565 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: mu2 Sco
mu2 Sco
- Spectral type
- B2 IV
- Surface temperature
- 21,700 K (Sun: 5,772 K)
- Mass
- 9.10 M☉
- Radius
- 5.60 R☉
- Age
- 0.0 billion years (Sun: 4.6)
Planetary System
mu2 Sco b is the only planet known to orbit mu2 Sco so far.
mu2 Sco b — Complete Data
| Mass | 4,576.73 Earth masses (14.400 Jupiter masses) |
|---|---|
| Orbital distance | 242.400 AU |
| Eccentricity | 0.560 |
| Earth Similarity Index | 0.19 |
| Distance from Earth | 516.9 light-years (158.5 parsecs) |
| Constellation | Scorpius |
| Discovery method | Imaging |
| Discovery facility | Paranal Observatory |
| Discovery year | 2022 |
Data: NASA Exoplanet Archive, last updated 2022-06-08. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About mu2 Sco b
Is mu2 Sco b habitable?
mu2 Sco b is not known to orbit within the habitable zone of mu2 Sco.
How far away is mu2 Sco b?
mu2 Sco b is about 517 light-years from Earth in the constellation Scorpius. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 9,097,440 years to get there.
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