
HD 33142 b |
440.3 M⊕ | 1.07 AU | 326 days | |
HD 33142 c |
197.1 M⊕ | 1.96 AU | 80 days |
Star HD 33142 can be found in southern celestial hemisphere. HD 33142 is about 4 times bigger than the Sun and temperature in its outer envelope is around 4978 K (4705 °C), which is about 86 % of Suns temperature.
The red giant is one of the final stages in the evolution of main sequence stars. These stars have already fused most of their hydrogen into helium, and their outer layers are gradually expanding. A white dwarf will form from the dense core of the original star, and the discarded upper layers will become a planetary nebula. In 5 billion years the Sun will also enter the red giant phase. Its size will then inflate to the orbit of Earth or Mars.