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Rho Fornacis
Rho Fornacis (ρ For)[3] is a star of apparent magnitude +5.45[2] in the constellation of Fornax, the furnace. Its distance from Earth, according to stellar parallax measurements taken by the Gaia spacecraft, is 283 light-years.[1] Rho Fornacis is a yellow-orange giant of spectral type G6III[3][6] with an effective temperature of 4884 K.[7] It is similar, though somewhat hotter, than β Fornacis and π Fornacis, stars also in Fornax. The diameter of Rho Fornacis is 9.9 times larger than the solar diameter but its mass is barely 1% greater than that of the Sun. Its age is estimated at 5180 ± 3170 million years. Rho Fornacis is a thick disk star, unlike most stars in our environment. Arcturus (α Boötis) and ε Fornacis, the latter in this same constellation, are examples of thick disk stars. The eccentricity of its orbit around the Galactic Center (e = 0.56) is considerably greater than that of the Sun (e = 0.16), star of the thin disk.[8] Consequently, it shows a low metallicity—relative abundance of elements heavier than helium—, less than half that of the solar ([Fe/H] = -0 ,35).[7] Elements such as aluminum, calcium and sodium are equally deficient. As in other similar stars, the oxygen/iron ratio is higher than in the Sun ([O/H] = 0.33).[9] References
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