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{{Infobox planet
| name = HD 2039 b
| discoverer = Tinney, Butler, Marcy
| discovered = 2002
| discovery_method = Doppler Spectroscopy
| apsis = astron
| semimajor = {{convert|2.19|±|0.2|AU|km|abbr=on}}
| eccentricity = 0.68 ± 0.15
| period = 1192.582 ± 150 d
| time_periastron = 2449645.48 ± 150
| arg_peri = 223
| semi-amplitude = 153 ± 22
| star = HD 2039
}}HD 2039 b is an extrasolar planet orbiting the star HD 2039. It is almost five times as massive as Jupiter and has a very eccentric orbit.[1]References1. ^1 {{cite journal | title=Four New Planets Orbiting Metal-enriched Stars | last1=Tinney | first1=C. G. | last2=Butler | first2=R. Paul | last3=Marcy | first3=Geoffrey W. | last4=Jones | first4=Hugh R. A. | last5=Penny | first5=Alan J. | last6=McCarthy | first6=Chris | last7=Carter | first7=Brad D. | last8=Bond | first8=Jade | display-authors=1 | journal=The Astrophysical Journal | volume=587 | issue=1 | pages=423–428 | year=2003 | arxiv=astro-ph/0207128 | bibcode=2003ApJ...587..423T | doi=10.1086/368068 }}
[1]
}}External links- The Extrasolar Planets Encyclopaedia: HD 2039
{{Sky|00|24|20.2778|-|56|39|00.171|330}}{{extrasolar-planet-stub}} 5 : Exoplanets|Phoenix (constellation)|Giant planets|Exoplanets discovered in 2002|Exoplanets detected by radial velocity |