HD 88133
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HD 88133 is a yellow star with an orbiting exoplanet in the equatorial constellation of Leo. It has an apparent visual magnitude of 8.01,<ref name=Anderson_Francis_2012/> which is too faint to be visible to the naked eye. With a small telescope it should be easily visible. The distance to this system, as measured through parallax, is 240 light years, but it is slowly drifting closer with a radial velocity of −3.6 km/s.<ref name="Gaia DR2"/>
This is classified as an ordinary G-type main-sequence star with a stellar classification of G8V.<ref name=Grieves_et_al_2018/> However, D. A. Fischer and associates in 2005 listed a class of G5 IV, suggesting it is instead a subgiant star that is evolving away from the main sequence having exhausted the hydrogen at its core.<ref name="Fischer2005"/> It is about 5 billion years old and is spinning with a projected rotational velocity of 4.9 km/s.<ref name=Earle2017/> The star has 23% more mass than the Sun and has double the Sun's girth.<ref name=Stassun_et_al_2017/> It is radiating over three times the luminosity of the Sun from its photosphere at an effective temperature of 5,414 K.<ref name="Gaia DR2"/>
Planetary systemEdit
In 2004 a close orbiting exoplanet was found using Doppler spectroscopy.<ref name="Fischer2005"/> In 2016 the direct detection of the planetary thermal emission spectrum was claimed,<ref name="Piskorz2016"/> but the detection was brought into questioned in 2021.<ref name="Buzard2021"/>
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