Magnitude 8.03 | ||
 | ||
People also search for Tau5 Serpentis, Pi Serpentis | ||
HD 143436 also known as HIP 78399 is a G-type star in the constellation Serpens. The temperature, rotation, mass, and abundance of elements in this star are close to properties of the Sun, and for this reason it is a solar twin candidate. The only notable difference is an approximately six times higher abundance of lithium compared to the Sun and a much younger age at 3.8 Gyr. The space velocity components of this star are (U, V, W) = (−19.2, −38.6, −7.0) km/s.
Sun comparison
This chart compares the Sun to HD 143436.
To date no solar twin with an exact match as that of the Sun has been found, however, there are some stars that come very close to being identical to that of the Sun, and are such considered solar twins by the majority of the public. An exact solar twin would be a G2V star with a 5,778K temperature, be 4.6 billion years old, with the correct metallicity and a 0.1% solar luminosity variation. Stars with an age of 4.6 billion years are at the most stable state. Proper metallicity and size are also very important to low luminosity variation.