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HD 38529

Données d'observation
(époque J2000.0)
Ascension droite	05^h 46^m 34,9130^s^[1]
Déclinaison	+01° 10′ 05,513″^[1]
Constellation	Orion
Magnitude apparente	+5,94 / +13,35
Localisation dans la constellation : Orion

Caractéristiques
Type spectral	G4V

Astrométrie
Vitesse radiale	+30,27 ± 0,16 km/s^[1]
Mouvement propre	μ_α = −77,670 mas/a^[1] μ_δ = −141,987 mas/a^[1]
Parallaxe	23,581 9 ± 0,058 7 mas^[1]
Distance	42,405 4 ± 0,105 5 pc (∼138 al)^[1]

Désignations

HR 1988, HD 38529, HIP 27253, BD+01°1126, SAO 113119, WDS J05466 +0110^[2]

HD 38529 (également nommée HR 1988) est une étoile binaire située à environ 138 années-lumière^[1] dans la constellation d'Orion.

HD 38529 A

HD 38529 A est une sous-géante jaune, qui a été aussi classée naine jaune de type spectral G4V. Elle est 40 % plus massive que le soleil. Deux exoplanètes sont en orbite autour d'elle, HD 38529 Ab, une géante gazeuse de 0,78 masse jovienne à 0,129 unité astronomique et HD 38529 Ac, une naine brune de 12,7 à 37 masses jovienne.

Caractéristiques des planètes du système HD 38529
Planète	Masse	Demi-grand axe (ua)	Période orbitale (jours)	Excentricité
HD 38529 Ab	> (0,92 ± 0,043) M_J	0,131 ± 0,001 5	14,310 ± 0,05	0,248 ± 0,000 7
HD 38529 Ac	17,7^+1,7 _−1,4 M_J	3,695 ± 0,043	2 134,76 ± 0,40	0,36 ± 0,05
HD 38529 Ad non confirmé	> (0,17 ± 0,06) M_J	0,75 ± 0,14	193,9 ± 2,9	0,23 ± 0,13
Disque de débris	—

HD 38529 B

HD 38529 B est une naine rouge de type M3.0V qui orbite à 12 042 UA.

Références

↑ ^{a b c d e f g et h} (en) A. G. A. Brown et al. (Gaia collaboration), « Gaia Data Release 2 : Summary of the contents and survey properties », Astronomy & Astrophysics, vol. 616,‎ août 2018, article n^o A1 (DOI 10.1051/0004-6361/201833051, Bibcode 2018A&A...616A...1G, arXiv 1804.09365). Notice Gaia DR2 pour cette source sur VizieR.
↑ (en) HD 38529 -- High proper-motion Star sur la base de données Simbad du Centre de données astronomiques de Strasbourg.

http://www.journals.uchicago.edu/ApJ/journal/issues/ApJ/v551n2/52326/brief/52326.abstract.html%7Cauthor=Fischer, D., Marcy, G., Butler, R., Vogt, S., Frink, S., Apps, K., Planetary Companions to HD 12661, HD 92788, and HD 38529 and Variations in Keplerian Residuals of Extrasolar Planets, The Astrophysical Journal, volume=551, 2001, pages=1107–1118
http://www.journals.uchicago.edu/ApJ/journal/issues/ApJ/v586n2/57020/57020.html, Fischer et al., A Planetary Companion to HD 40979 and Additional Planets Orbiting HD 12661 and HD 38529, The Astrophysical Journal, volume=586, 2003, pages=1394–1408
http://www.edpsciences.org/articles/aa/abs/2006/14/aa4611-05/aa4611-05.html%7Cauthor=Reffert, S., Quirrenbach, A., Hipparcos astrometric orbits for two brown dwarf companions: HD 38529 and HD 168443, Astronomy and Astrophysics, volume=449, 2006, pages 699-702
Raghavan, D. et al. (2006). "Two Suns in The Sky: Stellar Multiplicity in Exoplanet Systems" (preprint)

Liens externes

(en) HD 38529 sur la base de données Simbad du Centre de données astronomiques de Strasbourg.
(en) « Notes for star HD 38529 », The Extrasolar Planets Encyclopaedia (consulté le 14 avril 2006)
(en) John Whatmough, « HD 38529 », Extrasolar Visions (consulté le 14 avril 2006)

v · m Étoiles de la constellation d'Orion
Bayer	α (Bételgeuse) β (Rigel) γ (Bellatrix) δ (Mintaka) ε (Alnilam) ζ (Alnitak) η (Algjebba) θ¹ Amas du Trapèze θ¹ A θ¹ B (en) θ¹ C (en) θ¹ D (en) θ¹ E (en) θ² (en) ι (Hatysa) κ (Saïph) λ (Meissa) μ ν ξ ο¹ ο² π¹ π² π³ (Tabit) π⁴ π⁵ π⁶ ρ σ τ υ (Thabit) φ¹ φ² χ¹ χ² ψ¹ ψ² ω
Flamsteed	5 6 (g) 11 13 14 (i) 15 16 (h) 18 21 22 (o) 23 (m) (en) 27 (p) 29 (e) 31 32 (A) 33 35 38 42 (c) 45 49 (d) 51 (b) 52 55 56 57 59 60 63 64 66 68 69 (f¹) 71 72 (f²) 73 74 (k) (en) 75 (l)
Étoiles variables	S (en) T U W (en) RS UX VV (en) YY AN BF BL BM (en) CK CN CO DN (en) ER EW FU GW (en) HK NU V351 V359 V371 V372 V380 (en) V883 (en) V901 V1031 V1046 (en) V1051 V1085 V1118 V1155 V1156 V1159 V1197 V1261 V1307 V1309 V1357 V1366 V1369 V1377 V1389 V1647 V1649 V2455
HR	1507 1519 1571 1574 1576 1596 1600 1613 1618 1619 1684 1687 1691 1697 1701 1703 1709 1748 1759 (en) 1763 (en) 1764 1778 1781 1782 1799 1803 1807 1820 1826 1830 1832 1833 1840 1848 1861 1873 1874 (en) 1883 1886 1887 (en) 1891 1908 1911 1913 1918 1920 1923 1933 1940 1950 1952 (en) 1955 1959 1967 1978 1986 1987 1988 2007 (en) 2014 2019 2024 2030 2039 2057 2070 2071 2075 2076 2099 2113 2133 2174 2214 2218 2222 2231 2233 2236 2251 (en) 2253 2259 2269 2275 (en)
HD	30869 31253 33636 34445 37605 (en) 37806 37903 38087 38801 290327 (en)
Gliese	179 (en) 182 205 208 (en) 221 3379 (en)
Autres	BD +03 740 Objet de Becklin-Neugebauer CVSO 30 G 99-37 G 99-47 (en) HH 1/2 (en) LP 658-2 (en) OMC-2 FIR4 Orion source I PDS 110 Ross 47 (en) S Ori 70 (en) 4U 0614+091 (en) WASP-82 WISE J0521+1025 (en) WISE J052857.69+090104.2
Liste d'étoiles d'Orion

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