HD 181433 c
| Exoplanet | List of exoplanets | |
|---|---|---|
| Parent star | ||
| Star | HD 181433 | |
| Constellation | Pavo | |
| Right ascension | (α) | 19h 25m 09.5663s[1] |
| Declination | (δ) | −66° 28′ 07.671″[1] |
| Apparent magnitude | (mV) | 8.38[1] |
| Distance | 87 ± 3[2] ly (26.8 ± 0.8 pc) |
|
| Spectral type | K5V[3] | |
| Mass | (m) | 0.78[4] M☉ |
| Temperature | (T) | 4962 ± 134[4] K |
| Metallicity | [Fe/H] | 0.33 ± 0.13[4] |
| Orbital elements | ||
| Semi-major axis | (a) | 1.76[4] AU |
| Periastron | (q) | 1.27 AU |
| Apastron | (Q) | 2.25 AU |
| Eccentricity | (e) | 0.28 ± 0.02[4] |
| Orbital period | (P) | 962 ± 15[4] d (2.63 y) |
| Orbital speed | (υ) | 20.0 km/s |
| Argument of periastron |
(ω) | 21.4 ± 3.2[4]° |
| Time of periastron | (T0) | 2453235 ± 7.3[4] JD |
| Physical characteristics | ||
| Minimum mass | (m sin i) | 0.64[4] MJ |
| Discovery information | ||
| Discovery date | June 16, 2008[5] | |
| Discoverer(s) | Bouchy et al.[6] | |
| Discovery method | Doppler spectroscopy[5] | |
| Discovery site |  La Silla Observatory[5] |
|
| Discovery status | Announced[5] | |
| Database references | ||
| Extrasolar Planets Encyclopaedia |
data | |
| SIMBAD | data | |
| Exoplanet Archive | data | |
| Open Exoplanet Catalogue | data | |
HD 181433 c is an extrasolar planet located approximately 87 light years away[2] in the constellation of Pavo, orbiting the star HD 181433. This planet has mass at least 0.64 times that of Jupiter and takes 962 days to orbit the star at an orbital distance of 1.76 AU or 263 Gm. However, the orbit is eccentric, which ranges from 1.27 AU (190 Gm) at periastron to 2.25 AU (337 Gm) at apastron.[4] François Bouchy et al. have published a paper detailing the HD 181433 planetary system in Astronomy and Astrophysics.[6]
References
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Coordinates: 
19h 25m 09.5663s, −66° 28′ 07.671″
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