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**HD 219134**
觀測資料; 曆元 J2000.0
星座	仙后座
星官
赤經	23h 13m 17s
赤緯	+57° 10′ 6″
視星等（V）	5.56
特性
光谱分类	K3V
U−B 色指数	0.89
B−V 色指数	1.01
R−I 色指数	0.53
天体测定
徑向速度 (Rv)	0.89 km/s
自行 (μ)	赤经：-18 mas/yr ; 赤纬：- mas/yr
视差 (π)	0.152 mas
距离	21.35 ± 0.04 ly ; (6.55 ± 0.01 pc)
其他命名
	BD+56 2966，SAO 35236，HD 219134，HR 8832
參考資料庫
SIMBAD	资料

HD 219134，又名BD+56 2966，SAO 35236、HR 8832，是一颗位於仙后座的恒星^[1]^[2]，视星等为5.56，位于銀經109.87，銀緯-3.19，其B1900.0坐标为赤經23^h 8^m 27.8^s，赤緯+56° -3.19′ 58″。

已知該恆星擁有7顆行星（b、c、d、f、g、h已證實，e尚未確認）。

行星系統

一個由六顆已知系外行星組成的系統。最裡面的行星HD 219134 b是一顆超級地球，體積是地球的 1.6 倍和密度為每立方厘米6.4克。^[3]^[4]

HD 219134的行星系^[5]^[6]^[7]
成員 (依恆星距離)	质量	半長軸 (AU)	轨道周期 (天)	離心率	傾角	半径
b	7000474000000000000♠4.74±0.19 M_⊕	6998387600000000000♠0.03876±0.00047	7000309292600000000♠3.092926±0.000010	0 (fixed)	7001850500000000000♠85.05±0.09°	7000160200000000000♠1.602±0.055 R_⊕
c	7000436000000000000♠4.36±0.22 M_⊕	6998653000000000000♠0.06530±0.00080	7000676458000000000♠6.76458±0.00033	6998620000000000000♠0.062±0.039	7001872800000000000♠87.28±0.10°	7000151100000000000♠1.511±0.047 R_⊕
f	>7000730000000000000♠7.30±0.40 M_⊕	6999146300000000000♠0.1463±0.0018	7001227170000000000♠22.717±0.015	6999148000000000000♠0.148±0.047	—	—
d	>7001161700000000000♠16.17±0.64 M_⊕	6999237000000000000♠0.2370±0.0030	7001468590000000000♠46.859±0.028	6999138000000000000♠0.138±0.025	—	—
g	>7001110000000000000♠11±1 M_⊕	6999375300000000000♠0.3753±0.0004	7001942000000000000♠94.2±0.2	0	—	—
e (未确认)	>7001709000000000000♠70.9±31.45 M_⊕	7000256000000000000♠2.56±1.6	7003184200000000000♠1842±2290	6999340000000000000♠0.34±0.17
h^[8]	>98 M_⊕	7000311000000000000♠3.11±0.04	7003210060000000000♠2100.6±2.9	6998600000000000000♠0.06±0.04	—	—

参考文献

^ ^1.0 ^1.1 ^1.2 ^1.3 ^1.4 ^1.5 ^1.6 ^1.7 ^1.8 Pulsating variable Star. SIMBAD. Centre de Données astronomiques de Strasbourg. [2012-07-13]. （原始内容存档于2019-05-19）.
^ ^2.0 ^2.1 ^2.2 ^2.3 ^2.4 ^2.5 ^2.6 ^2.7 ^2.8 VizieR Detailed Page. [2012-07-13]. （原始内容存档于2016-03-05）.
^ PIA19832: Location of Nearest Rocky Exoplanet Known. NASA. 30 July 2015 [30 July 2015]. （原始内容存档于2019-06-26）.
^ Chou, Felicia; Clavin, Whitney. NASA's Spitzer Confirms Closest Rocky Exoplanet. NASA. 30 July 2015 [31 July 2015]. （原始内容存档于2017-05-17）.
^ Vogt, Steven S.; et al. Six Planets Orbiting HD 219134. The Astrophysical Journal. November 2015, 814 (1): 12. Bibcode:2015ApJ...814...12V. S2CID 45438051. arXiv:1509.07912 . doi:10.1088/0004-637X/814/1/12.
^ Johnson, Marshall C.; et al. A 12-year Activity Cycle for the Nearby Planet Host Star HD 219134. The Astrophysical Journal. April 2016, 821 (2): 74. Bibcode:2016ApJ...821...74J. S2CID 118651905. arXiv:1602.05200 . doi:10.3847/0004-637X/821/2/74.
^ Gillon, Michaël; et al. Two massive rocky planets transiting a K-dwarf 6.5 parsecs away. Nature Astronomy. 2017, 1 (3). 0056. Bibcode:2017NatAs...1E..56G. S2CID 56075932. arXiv:1703.01430 . doi:10.1038/s41550-017-0056.
^ Van Zandt, Judah; et al, TESS-Keck Survey. XIV. Two Giant Exoplanets from the Distant Giants Survey, The Astronomical Journal, 2023, 165 (2): 60, S2CID 252280288, arXiv:2209.06958 , doi:10.3847/1538-3881/aca6ef

这是一篇與恆星相關的小作品。您可以通过编辑或修订扩充其内容。

[SIMBAD-1] 1.0 ^1.1 ^1.2 ^1.3 ^1.4 ^1.5 ^1.6 ^1.7 ^1.8 Pulsating variable Star. SIMBAD. Centre de Données astronomiques de Strasbourg. [2012-07-13]. （原始内容存档于2019-05-19）.

[DATA-2] 2.0 ^2.1 ^2.2 ^2.3 ^2.4 ^2.5 ^2.6 ^2.7 ^2.8 VizieR Detailed Page. [2012-07-13]. （原始内容存档于2016-03-05）.

[NASA-20150730-3] PIA19832: Location of Nearest Rocky Exoplanet Known. NASA. 30 July 2015 [30 July 2015]. （原始内容存档于2019-06-26）.

[NASA-20150730-fc-4] Chou, Felicia; Clavin, Whitney. NASA's Spitzer Confirms Closest Rocky Exoplanet. NASA. 30 July 2015 [31 July 2015]. （原始内容存档于2017-05-17）.

[Vogt2015-5] Vogt, Steven S.; et al. Six Planets Orbiting HD 219134. The Astrophysical Journal. November 2015, 814 (1): 12. Bibcode:2015ApJ...814...12V. S2CID 45438051. arXiv:1509.07912 . doi:10.1088/0004-637X/814/1/12.

[Johnson2016-6] Johnson, Marshall C.; et al. A 12-year Activity Cycle for the Nearby Planet Host Star HD 219134. The Astrophysical Journal. April 2016, 821 (2): 74. Bibcode:2016ApJ...821...74J. S2CID 118651905. arXiv:1602.05200 . doi:10.3847/0004-637X/821/2/74.

[Gillon2017-7] Gillon, Michaël; et al. Two massive rocky planets transiting a K-dwarf 6.5 parsecs away. Nature Astronomy. 2017, 1 (3). 0056. Bibcode:2017NatAs...1E..56G. S2CID 56075932. arXiv:1703.01430 . doi:10.1038/s41550-017-0056.

[8] Van Zandt, Judah; et al, TESS-Keck Survey. XIV. Two Giant Exoplanets from the Distant Giants Survey, The Astronomical Journal, 2023, 165 (2): 60, S2CID 252280288, arXiv:2209.06958 , doi:10.3847/1538-3881/aca6ef

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格利泽892

行星系統

参考文献