HD 135344 A b
HD 135344 A b is a hot Jupiter orbiting the A0 V star HD 135344 A in the constellation Lupus. It lies about 462 light-years from Earth and was discovered in 2025 using the imaging method.
How Big Is HD 135344 A b?
HD 135344 A b has a radius of 16.25 times that of Earth, or 1.45 times the radius of Jupiter. Its mass is 3,178 times that of Earth.
Is HD 135344 A b in the Habitable Zone?
The position of HD 135344 A b relative to the habitable zone of HD 135344 A cannot be precisely determined from the available orbital data.
Temperature on HD 135344 A b
The equilibrium temperature of HD 135344 A b is about 1,585 K (1,312 °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
HD 135344 A b orbits at an average distance of 16.500 AU. Its orbit is highly elliptical (eccentricity 0.50), swinging dramatically closer to and farther from its star.
How Was HD 135344 A b Discovered?
HD 135344 A b was discovered in 2025 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 135344 A b?
HD 135344 A b is 461.8 light-years (141.6 parsecs) from Earth. Light arriving here tonight left the planet around the year 1565. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 8,127,680 years to make the journey.
The Host Star: HD 135344 A
HD 135344 A b belongs to a system of 2 stars; it orbits HD 135344 A.
HD 135344 A
- Spectral type
- A0 V
- Surface temperature
- 9,540 K (Sun: 5,772 K)
- Radius
- 1.50 R☉
- Luminosity
- 16.5959 L☉
Planetary System
HD 135344 A b is the only planet known to orbit HD 135344 A so far.
HD 135344 A b — Complete Data
| Radius | 16.253 Earth radii (1.450 Jupiter radii) |
|---|---|
| Mass | 3,178.28 Earth masses (10.000 Jupiter masses) |
| Orbital distance | 16.500 AU |
| Eccentricity | 0.500 |
| Equilibrium temperature | 1,585 K (1,312 °C) |
| Distance from Earth | 461.8 light-years (141.6 parsecs) |
| Constellation | Lupus |
| Discovery method | Imaging |
| Discovery facility | Paranal Observatory |
| Discovery year | 2025 |
Data: NASA Exoplanet Archive, last updated 2025-08-07. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About HD 135344 A b
Is HD 135344 A b habitable?
HD 135344 A b is not known to orbit within the habitable zone of HD 135344 A, and as a hot Jupiter it is an unlikely candidate for life as we know it.
How far away is HD 135344 A b?
HD 135344 A b is about 462 light-years from Earth in the constellation Lupus. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 8,127,680 years to get there.
How big is HD 135344 A b compared to Earth?
HD 135344 A b has 16.25 times the radius of Earth and about 3,178 times its mass.
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