HD 169142 b
HD 169142 b is a cold gas giant orbiting HD 169142 in the constellation Sagittarius. It lies about 371 light-years from Earth and was discovered in 2023 using the imaging method.
Is HD 169142 b in the Habitable Zone?
The position of HD 169142 b relative to the habitable zone of HD 169142 cannot be precisely determined from the available orbital data.
Orbit and Year Length
HD 169142 b orbits at an average distance of 37.200 AU.
How Was HD 169142 b Discovered?
HD 169142 b was discovered in 2023 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 HD 169142 b?
HD 169142 b is 370.5 light-years (113.6 parsecs) from Earth. Light arriving here tonight left the planet around the year 1656. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 6,520,800 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 169142 b scores 0.07, ranking #4,868 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: HD 169142
HD 169142
- Mass
- 1.85 M☉
- Age
- 0.0 billion years (Sun: 4.6)
Planetary System
HD 169142 b is the only planet known to orbit HD 169142 so far.
HD 169142 b — Complete Data
| Mass | 953.49 Earth masses (3.000 Jupiter masses) |
|---|---|
| Orbital distance | 37.200 AU |
| Earth Similarity Index | 0.07 |
| Distance from Earth | 370.5 light-years (113.6 parsecs) |
| Constellation | Sagittarius |
| Discovery method | Imaging |
| Discovery facility | Paranal Observatory |
| Discovery year | 2023 |
Data: NASA Exoplanet Archive, last updated 2023-03-15. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About HD 169142 b
Is HD 169142 b habitable?
HD 169142 b is not known to orbit within the habitable zone of HD 169142, and as a cold gas giant it is an unlikely candidate for life as we know it.
How far away is HD 169142 b?
HD 169142 b is about 371 light-years from Earth in the constellation Sagittarius. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 6,520,800 years to get there.
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