HD 203030 b
HD 203030 b is a hot Jupiter orbiting the G8 V star HD 203030 in the constellation Vulpecula. It lies about 128 light-years from Earth and was discovered in 2006 using the imaging method.
How Big Is HD 203030 b?
HD 203030 b has a radius of 14.46 times that of Earth, or 1.29 times the radius of Jupiter. Its mass is 3,496 times that of Earth.
Is HD 203030 b in the Habitable Zone?
The position of HD 203030 b relative to the habitable zone of HD 203030 cannot be precisely determined from the available orbital data.
Temperature on HD 203030 b
The equilibrium temperature of HD 203030 b is about 1,040 K (767 °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.
How Was HD 203030 b Discovered?
HD 203030 b was discovered in 2006 using the imaging method, with observations from Palomar 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 203030 b?
HD 203030 b is 128.0 light-years (39.3 parsecs) from Earth. Light arriving here tonight left the planet around the year 1898. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 2,252,800 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 203030 b scores 0.06, ranking #5,111 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: HD 203030
HD 203030
- Spectral type
- G8 V
- Age
- 0.1 billion years (Sun: 4.6)
Planetary System
HD 203030 b is the only planet known to orbit HD 203030 so far.
HD 203030 b — Complete Data
| Radius | 14.460 Earth radii (1.290 Jupiter radii) |
|---|---|
| Mass | 3,496.11 Earth masses (11.000 Jupiter masses) |
| Equilibrium temperature | 1,040 K (767 °C) |
| Earth Similarity Index | 0.06 |
| Distance from Earth | 128.0 light-years (39.3 parsecs) |
| Constellation | Vulpecula |
| Discovery method | Imaging |
| Discovery facility | Palomar Observatory |
| Discovery year | 2006 |
Data: NASA Exoplanet Archive, last updated 2021-09-08. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About HD 203030 b
Is HD 203030 b habitable?
HD 203030 b is not known to orbit within the habitable zone of HD 203030, and as a hot Jupiter it is an unlikely candidate for life as we know it.
How far away is HD 203030 b?
HD 203030 b is about 128 light-years from Earth in the constellation Vulpecula. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 2,252,800 years to get there.
How big is HD 203030 b compared to Earth?
HD 203030 b has 14.46 times the radius of Earth and about 3,496 times its mass.
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