Английская Википедия:HD 150248
Шаблон:Short description Шаблон:Starbox begin Шаблон:Starbox observe Шаблон:Starbox character Шаблон:Starbox astrometry Шаблон:Starbox detail Шаблон:Starbox catalog Шаблон:Starbox reference Шаблон:Starbox end
HD 150248 is a Sun-like star 87 light-years (26.6 parsecs) from the Sun. HD 150248 is a G-type star and a near solar twin.[1] HD 150248's photometric color is also very close to that of the Sun; however, it has a lower abundance of metals, and has an apparent visual magnitude of 7.02. At 6.2 billion years old, this star is 1.6 billion years older than the Sun and has passed the stable burning stage.Шаблон:Cn HD 150248 is found on the border between the constellations Scorpius and Ara.
To date, no solar twin with an exact match to that of the Sun has been found. However, there are some stars that come very close to being identical, and thus considered solar twins by the astronomical community. An exact solar twin would be a G2V star with a 5,778K temperature, be 4.6 billion years old, with solar metallicity, and a 0.1% solar luminosity variation.[2] Stars with an age of 4.6 billion years, such as the Sun, are at the most stable state. Proper metallicity and size are also very important to low luminosity variation.[3][4][5]
Comparison to the Sun
| Identifier | J2000 Coordinates | Distance (ly) |
Stellar Type |
Temperature (K) |
Metallicity (dex) |
Age (Gyr) |
Notes | |
|---|---|---|---|---|---|---|---|---|
| Right ascension | Declination | |||||||
| Sun | — | — | 0.00 | G2V | 5,778 | +0.00 | 4.6 | [6] |
| Шаблон:CelestialRefAll | Шаблон:RA | Шаблон:DEC | 88 | G3V | 5,723 | −0.04 | 6.2 | [7] |
See also
References
- ↑ Ошибка цитирования Неверный тег
<ref>; для сносокdosSantos2016не указан текст - ↑ NASA, Science News, Solar Variability and Terrestrial Climate, Jan. 8, 2013
- ↑ University of Nebraska-Lincoln astronomy education group, Stellar Luminosity Calculator
- ↑ National Center for Atmospheric Research, The Effects of Solar Variability on Earth's Climate, 2012 Report
- ↑ Most of Earth’s twins aren’t identical, by Ethan on June 5, 2013
- ↑ Шаблон:Cite web
- ↑ Ошибка цитирования Неверный тег
<ref>; для сносокdemelloне указан текст
- Английская Википедия
- Henry Draper Catalogue objects
- G-type main-sequence stars
- Solar analogs
- Hipparcos objects
- Durchmusterung objects
- Scorpius
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