| Extrasolar planet | List of extrasolar planets | |
|---|---|---|
| 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 | ||
| Semimajor axis | (a) | 3.00[4] AU |
| Periastron | (q) | 1.56 AU |
| Apastron | (Q) | 4.44 AU |
| Eccentricity | (e) | 0.48 ± 0.05[4] |
| Orbital period | (P) | 2172 ± 158[4] d (5.947 y) |
| Orbital speed | (υ) | 15.1 km/s |
| Argument of periastron |
(ω) | -30 ± 13[4]° |
| Time of periastron | (T0) | 2452154 ± 194[4] JD |
| Physical characteristics | ||
| Minimum mass | (m sin i) | 0.54[4] MJ |
| Discovery information | ||
| Discovery date | December 9, 2008[5] | |
| Discoverer(s) | Bouchy et al.[5] | |
| Detection method | Doppler spectroscopy | |
| Discovery site | La Silla Observatory | |
| Discovery status | Announced | |
| Database references | ||
| Extrasolar Planets Encyclopaedia |
data | |
| SIMBAD | data | |
HD 181433 d is an extrasolar planet located approximately 87 light years away[2] in the constellation of Pavo, orbiting the star HD 181433. This planet has a minimum mass of 0.54 Jupiter mass and takes 2172 days to orbit the star. The average orbital distance is 3.00 AU. At periastron distance, it will have distance from the star similar to Mars’ distance from the Sun at 1.56 AU. At apastron, the distance is 4.44 AU. These corresponds to the orbital eccentricity of 0.48.[4]
Coordinates: 19h 25m 09.5663s, −66° 28′ 07.671″
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