HD 147513
A Sun-like star with a disputed planet.
HD 147513 (62 G. Scorpii) is a star in the southern constellation of Scorpius, first catalogued by Italian astronomer Giuseppe Piazzi as "XVI 55". With an apparent magnitude of 5.38, it is visible to the naked eye from suburban skies under the Bortle scale. Based on Hipparcos parallax measurements, it lies about 42 light years from the Sun.
Quick Facts
- Apparent magnitude
- 5.38
- Distance
- 42 light years
- Spectral type
- G1V CH-04
- Mass
- 5% greater than the Sun
- Age
- 400 million years
- Constellation
- Scorpius
Facts from the source article.
Properties
This G1V CH-04 main sequence star has about 5% more mass than the Sun and is considered young at an estimated 400 million years old. Despite its greater mass, its luminosity is similar to the Sun. It is a Barium star overabundant in s-process elements, though its overall elemental abundance resembles the Sun's. HD 147513 is suspected of being a variable star and belongs to the Ursa Major moving group. It has a co-moving DA-class white dwarf companion about 5,360 AU away; the white dwarf's progenitor may have transferred matter onto HD 147513 during its asymptotic giant branch phase.
Supposed planetary system
In 2002, the Geneva Extrasolar Planet Search Team announced a gas giant orbiting the star, with most of its orbit lying within the habitable zone except at apogee. A terrestrial planet could only maintain a stable orbit within the habitable zone if it moved synchronously with the gas giant, possibly at the L4 or L5 Lagrangian points. However, the planet has not been independently confirmed, and a 2025 paper reported a non-detection, suggesting the original observations were likely in error.
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