Regulus: The Heart of the Lion
By: Monica Mahajan - 4th period
What is Regulus?
Terms To Know
A unit of measure for distance. A light year is the distance light can travel in one year.
How much energy, or light, a star gives off from its surface.
How bright a star looks from a standard distance of 36.2 light-years.
How bright a star looks like from Earth.
Compared To Our Sun...
- This star surface temperature is 12,000 K (about 21,000 degrees Fahrenheit!), much hotter than our Sun's surface temperature.
- The luminosity of Regulus is 240 L, whereas the Sun's is 1 L.
- Regulus is about 50 million years old, while the Sun is about 5 billion years old!
- Regulus is a main sequence star, like the Sun.
- Apparent magnitude: 1.36
- Absolute magnitude: -0.52
- Right ascension: 10 hrs, 8 min, 22.3 sec
- one of the two coordinates of a point on the celestial sphere (part of equatorial coordinate system)
- Declination: +11 degrees, 58 min, 2 sec
- the other coordinate
- About 78 light years away from Earth!
Did You Know...
To see the other brightest stars, click...