| 词条 | HD 181433 d |
| 释义 |
| name = HD 181433 d | discoverer = Bouchy et al. | discovery_site = {{flagicon|Chile}} La Silla Observatory | discovered = December 9, 2008 | discovery_method = Doppler spectroscopy | apsis = astron | aphelion = {{convert|4.44|AU|km|abbr=on}} | perihelion = {{convert|1.56|AU|km|abbr=on}} | semimajor = {{convert|3.00|AU|km|abbr=on}}[1] | eccentricity = 0.48 ± 0.05[1] | period = 2172 ± 158[1] d 5.947 y | avg_speed = 15.1 | time_periastron = 2452154 ± 194[1] | arg_peri = -30 ± 13[1] | star = HD 181433 }}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.[1] References1. ^1 2 3 4 5 {{cite web|url=http://exoplanet.eu/planet.php?p1=HD+181433&p2=d|title=Notes for Planet HD 181433 d|work=The Extrasolar Planets Encyclopaedia|author=Schneider, J.|accessdate=2008-12-15}} 2. ^{{cite web|url=http://webviz.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=I/311/hip2&recno=95152|title=HIP 95152|author=van Leeuwen, F.|date=2007|work=Hipparcos, the New Reduction: The Astrometric Catalogue|accessdate=2008-12-15}} }} External links
6 : Exoplanets|HD 181433|Pavo (constellation)|Exoplanets discovered in 2008|Giant planets|Exoplanets detected by radial velocity |
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