HIP 11915 b

1. 본문

HIP 11915 b is an exoplanet that orbits the star HIP 11915, a G-type star that is very similar to our Sun in terms of mass, radius, temperature, and age. The star is located approximately 170-190 light-years from Earth in the constellation Cetus.

Key features of HIP 11915 b:

• Jupiter Analog: HIP 11915 b has a mass (minimum mass of 0.99 M_J or 315 M_E) and orbital distance (around 4.8 AU) very similar to that of Jupiter in our solar system. It has an orbital period of about 10 years.
• Discovery: The exoplanet was discovered in 2015 using the radial velocity method, which detects the wobble of a star caused by the gravitational tug of an orbiting planet, using the HARPS (High Accuracy Radial Velocity Planet Searcher) instrument.
• Significance: The discovery of HIP 11915 b is important because it is the first exoplanet discovered with both a mass and an orbit similar to Jupiter's. This suggests that the HIP 11915 system could be similar to our own Solar System.
• Potential for other planets: The discovery indicates there could be terrestrial (rocky) planets in the inner parts of the system and increases the possibility for an Earth-like planet to exist within the habitable zone at around 1 AU.

It's worth noting that there is a small possibility that the radial velocity variations observed could be caused by stellar activity rather than a planet.