HIP 78530 b
HIP 78530 b is a exoplanet orbiting the B9 V star HIP 78530 in the constellation Scorpius. It lies about 446 light-years from Earth and was discovered in 2010 using the imaging method.
Is HIP 78530 b in the Habitable Zone?
The position of HIP 78530 b relative to the habitable zone of HIP 78530 cannot be precisely determined from the available orbital data.
Temperature on HIP 78530 b
The equilibrium temperature of HIP 78530 b is about 2,700 K (2,427 °C) — hot enough to melt many metals. This estimate ignores any atmosphere, which could change surface temperatures dramatically — Earth's greenhouse effect adds about 33 °C.
Orbit and Year Length
HIP 78530 b orbits at an average distance of 740.000 AU.
How Was HIP 78530 b Discovered?
HIP 78530 b was discovered in 2010 using the imaging method, with observations from Gemini 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 HIP 78530 b?
HIP 78530 b is 446.0 light-years (136.8 parsecs) from Earth. Light arriving here tonight left the planet around the year 1580. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 7,849,600 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. HIP 78530 b scores 0.07, ranking #4,828 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: HIP 78530
HIP 78530
- Spectral type
- B9 V
- Surface temperature
- 10,500 K (Sun: 5,772 K)
- Mass
- 2.50 M☉
- Age
- 0.0 billion years (Sun: 4.6)
Planetary System
HIP 78530 b is the only planet known to orbit HIP 78530 so far.
HIP 78530 b — Complete Data
| Mass | 7,300.00 Earth masses (23.000 Jupiter masses) |
|---|---|
| Orbital distance | 740.000 AU |
| Equilibrium temperature | 2,700 K (2,427 °C) |
| Earth Similarity Index | 0.07 |
| Distance from Earth | 446.0 light-years (136.8 parsecs) |
| Constellation | Scorpius |
| Discovery method | Imaging |
| Discovery facility | Gemini Observatory |
| Discovery year | 2010 |
Data: NASA Exoplanet Archive, last updated 2015-04-01. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About HIP 78530 b
Is HIP 78530 b habitable?
HIP 78530 b is not known to orbit within the habitable zone of HIP 78530.
How far away is HIP 78530 b?
HIP 78530 b is about 446 light-years from Earth in the constellation Scorpius. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 7,849,600 years to get there.
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