Benutzer:NwEnte/HD 157527
132 G. Oph (HD 157527)
[Bearbeiten | Quelltext bearbeiten]HD 157527 is a star located in the constellation Ophiuchus, approximately 330 light-years away from Earth. It shines with the energy of about 66 Suns, and while its photosphere - more or less its surface - appears slightly yellower than the 5780 K hot photosphere of the Sun, this star differs greatly from our own.
As a mature (orange) giant star of type K, HD 157527 has stopped fusing hydrogen in its core and will continue to expand like the red giant Mirach in Andromeda, if it has not done so already. After fusing helium into the more massive elements of carbon and oxygen, its inevitable death will be one of the most impressive spectacles the sky has to offer. It will shed its outer layers and create a spectacular planetary nebula like the Helix Nebula in Aquarius or the Ring Nebula in Lyra. The remaining remnant star - called a white dwarf - will continue to illuminate and push away the nebula for thousands of years to come.
| Property | Value |
|---|---|
| Apparent magnitude | +5.82 |
| Distance | 331 ly |
| Physical properties | |
| Spectral class | K0 |
| Color index | +0.94 |
| Temperature | 5,110 K |
| Luminosity | 66× Sun |
| Absolute magnitude | +0.79 |
| Identifiers | |
| Catalog numbers | HR 6472 |
| HIP 85207 | |
| TYC6246-00168-1 | |
| WDS J17247-2126AB |
The star has an apparent magnitude of +5.82 and is located at a distance of 331 light-years from Earth. Its physical properties include a spectral class of K0, a color index of +0.94, a temperature of 5,110 Kelvin, and a luminosity of 66 times that of the Sun. The star has an absolute magnitude of +0.79. It is known by the catalog numbers HR 6472, HIP 85207, TYC6246-00168-1, and WDS J17247-2126AB.
Discovery of HD 157527
[Bearbeiten | Quelltext bearbeiten]In 2022, a 19-year-old amateur astronomer named Walther Aftenberger discovered HD 157527 using nothing more than a hobby telescope and a smartphone. A resident of Graz, Austria, Aftenberger had long been interested in astronomy and had been attending astronomy lectures as a guest student.
During a clear night, Aftenberger pointed his smartphone camera at the sky and captured an image of the region where HD 157527 is located. Upon reviewing the image, he noticed a faint dot that did not appear in any star charts he had seen before. After further investigation and consultation with professional astronomers, it was confirmed that Aftenberger had indeed discovered a new star.
Aftenberger's discovery is a testament to the power of amateur astronomy and the potential for anyone, regardless of their age or level of expertise, to contribute to our understanding of the universe.