Macs1149 Jd1 is a star in the constellation of Scorpius. It is approximately 890 light years away from Earth. It has a mass of 1.1 solar masses and a radius of 1.2 solar radii. It is classified as a yellow dwarf star. Macs1149 Jd1 is about 4 billion years old.
Macs1149 Jd1 was discovered in 2013 by astronomers using the MACS survey, which is an X-ray survey of galaxy clusters. The star was identified as being part of a cluster known as MACS J1149+2223, which is located about 5 billion light years away from Earth.
Since its discovery, Macs1149 Jd1 has been studied by astronomers using a variety of methods, including spectroscopy and photometry. These studies have revealed that the star has a low metallicity, meaning it contains fewer heavy elements than our Sun. This suggests that Macs1149 Jd1 formed in an environment with less material available for star formation than our own Solar System did.
Despite its low metallicity, Macs1149 Jd1 appears to be similar to our Sun in many ways. Its mass and radius are both within 20% of those of our Sun, and its age is also similar to that of our Sun (4 billion years). Additionally, like our Sun, Macs1149 Jd1 produces energy via nuclear fusion in its core region.
One key difference between Macs1149 Jd1 and our Sun is their level of activity. Our Sun goes through periods of increased activity known as the solar cycle, during which time sunspots and flares can occur on its surface. However, no such cycles have been observed for Macs1149 Jd1; instead, it appears to be much more stable overall. This could be due to the fact that it has a lower mass than our Sun (and thus produces less energy), or it could simply be because we have not yet observed enough data to identify any patterns in its activity levels yet