Mu Arae e
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- This article is about the 310-day planet in the Mu Arae system. For the ~4200 day planet, which some authors refer to as Mu Arae e, see Mu Arae c.
| Extrasolar planet | Lists of extrasolar planets | |
|---|---|---|
| Parent star | ||
| Star | Mu Arae | |
| Constellation | Ara | |
| Right ascension | (α) | 17h 44m 08.7s |
| Declination | (δ) | −51° 50′ 03″ |
| Spectral type | G3IV–V | |
| Orbital elements | ||
| Semimajor axis | (a) | 0.921 AU |
| Eccentricity | (e) | 0.0666 ± 0.0122 |
| Orbital period | (P) | 310.55 ± 0.83 d |
| Inclination | (i) | ?° |
| Longitude of periastron |
(ω) | 189.6 ± 9.4° |
| Time of periastron | (τ) | 2452708.7 ± 8.3 JD |
| Physical characteristics | ||
| Mass | (m) | >0.5219 MJ |
| Radius | (r) | >1.15 RJ |
| Density | (ρ) | ? kg/m3 |
| Temperature | (T) | ~290 K |
| Discovery information | ||
| Discovery date | 2006 | |
| Discoverer(s) | Goździewski et al. Mayor, Pepe |
|
| Detection method | Doppler Spectroscopy | |
| Discovery status | Published | |
| Other designations | ||
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Mu Arae d
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Mu Arae e was announced on August, 2006.
Mu Arae e is a gas giant that is located in the star's habitable zone at which a liquid water could support. It's mass is half that of Jupiter and orbits at a distance of 0.921 AU. This planet has a period of 310.55 days with a relatively circular orbit. The temperature of this planet is about the same as Earth, this planet is classified as Water Cloud Jovian. Any large moons would be able to support life, but however this parent star is low on hydrogen fuel, Mu Arae is starting to expand and eventually becoming red giant. The life on that moon has probably been extinct because this star is more luminous and hotter than this star that was 4.56 billion years old, same age as our Sun at present. The other thing is that the ultraviolet rays is too high to support biomolecules, but the planet Mu Arae b is located in ultraviolet habitable zone where it can support biomolecules, but it is too cold.
This designation should be used in place of Mu Arae c and this planet should called Mu Arae d according by the IAU.
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| Star | Mu Arae |
| Planets | b · c · d · e |
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