Lizard-740
Classification
| Age | 41 Million Years |
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| Temperature | 3,243 K |
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Physical
| Diameter | 4,520,043,996 km |
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| Luminosity | 76,002,006 Suns |
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System
Other
| Gravity | 0.02 G's |
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| Star Type | Hypergiant |
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| Stellar Class | M7.9 V |
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Lizard-740 is a breathtakingly massive red hypergiant star located in the Absthaca Galaxy, approximately 92,000 light-years from the galactic core. This celestial behemoth is 58% larger in diameter than Stephenson 2-18, making it one of the largest stars ever discovered. With a staggering diameter of 4.52 billion kilometers (approximately 3.01 billion miles), Lizard-740's surface would extend well beyond the orbit of Saturn if placed at the center of the Solar System.
Physical Characteristics
- Spectral Type: M0Ia
- Luminosity: Lizard-740 radiates with a luminosity 15.7 million times that of the Sun, bathing its surroundings in an intense, fiery red glow.
- Temperature: Despite its immense size, Lizard-740's surface temperature is relatively cool, averaging around 3,200 K, characteristic of red hypergiants.
- Mass: Estimated to be 350 solar masses, Lizard-740 pushes the upper limits of stellar mass, with intense gravitational forces keeping its enormous size in balance.
Structure and Phenomena
- Extended Atmosphere: Lizard-740 has a vast, diffuse outer atmosphere stretching tens of millions of kilometers beyond its visible surface. This outer region is filled with turbulent stellar winds, composed of hydrogen, helium, and trace heavy elements, moving at speeds of up to 300 km/s.
- Circumstellar Nebula: Surrounding Lizard-740 is a spectacular emission nebula, created by the star's intense stellar winds and episodic mass ejections. This nebula, rich in oxygen, carbon, and silicon, glows in vibrant hues of red, orange, and pink, making Lizard-740 a visually stunning sight for any observer.
Stellar Evolution
- Lizard-740 is in a late stage of its life, having exhausted most of its core hydrogen fuel. It is undergoing severe instability, periodically ejecting massive quantities of material into space. These ejections are precursors to a likely hypernova explosion, which will eventually leave behind either a black hole or an ultramassive neutron star.
Unique Features
- Binary Companion: Lizard-740 is part of a binary system, paired with a smaller blue supergiant star, Lizard-740 B, which orbits at a distance of approximately 30 AU. The intense radiation from Lizard-740 illuminates the companion, creating striking visual contrasts.
- Gravitational Influence: Due to its immense size and mass, Lizard-740 significantly influences the orbits of nearby stars and planetary systems, acting as a gravitational anchor for a small stellar cluster.
Cosmic Significance
Lizard-740 represents the pinnacle of stellar evolution and is a key object of study for astronomers seeking to understand the life cycles of massive stars. Its extraordinary size and unique properties place it among the most fascinating objects in the cosmos.
