HD 210277 b

**HD 210277 b ^[1]**
母恆星
太陽系外行星		太陽系外行星列表
母恆星		HD 210277
星座		寶瓶座
赤經	(α)	22^h 09^m 29.8657^s
赤緯	(δ)	-07° 32′ 55.155″
距離		69.44 ly (21.29 pc)
光譜類型		G0V
軌道參數
半長軸	(a)	1.138 ± 0.066 AU
軌道離心率	(e)	0.476 ± 0.017
公轉週期	(P)	442.19 ± 0.50 d (1.2106 y)
近星點時間	(T₀)	2,450,104.3 ± 2.6 JD
半振幅	(K)	38.94 ± 0.75 m/s
物理性質
最小質量	(m sin i)	1.29 ± 0.11 M_J
發現
發現時間		1998年9月9日
發現者		傑佛瑞·馬西等人
發現方法		都卜勒光譜學
發現地點		美國利克－卡內基系外行星巡天
發表論文		已發表論文
數據庫參考
太陽系外行星百科全書		data
SIMBAD		data

HD 210277 b是一顆環繞恆星 HD 210277 的太陽系外行星，位於寶瓶座。該行星於1998年9月由利克－卡內基系外行星巡天以當時發展相當成熟的徑向速度法發現。該行星的直量至少比木星高24%，軌道半長軸稍高於日地距離，但軌道離心率相當高，近拱點距離只有半長軸的一半，遠拱點距離則相當於太陽和火星的距離^[2]。

2000年時有一群科學家使用依巴谷衛星的初始天文測量資料進行分析後指出，該行星的軌道傾角是175.8°，因此真實質量是木星的18倍，應屬於棕矮星^[3]。但這些量測事後被證明只是軌道傾角的上限值^[4]。如果該行星的軌道和先前聲明存在的星周盤在相同平面上，在這個似乎合理的假設下軌道傾角應是40°，且行星質量應是木星2.2倍^[5]，但之後的觀測並未成功確認星周盤的存在^[6]^[7]^[8]。

參考資料

^ Butler, R. P.; et al. Catalog of Nearby Exoplanets. The Astrophysical Journal. 2006, 646 (1): 505–522 [2012-08-12]. Bibcode:2006ApJ...646..505B. arXiv:astro-ph/0607493 . doi:10.1086/504701. （原始內容存檔於2009-05-02）.
^ Marcy; Butler, R. Paul; Vogt, Steven S.; Fischer, Debra; Liu, Michael C.; et al. Two New Candidate Planets in Eccentric Orbits. The Astrophysical Journal. 1999, 520 (1): 239–247 [2012-08-12]. Bibcode:1999ApJ...520..239M. arXiv:astro-ph/9904275 . doi:10.1086/307451. （原始內容存檔於2020-06-09）.
^ Han; Black, David C.; Gatewood, George; et al. Preliminary Astrometric Masses for Proposed Extrasolar Planetary Companions. The Astrophysical Journal Letters. 2001, 548 (1): L57–L60 [2012-08-12]. Bibcode:2001ApJ...548L..57H. doi:10.1086/318927. （原始內容存檔於2009-04-29）.
^ Pourbaix, D. and Arenou, F. Screening the Hipparcos-based astrometric orbits of sub-stellar objects. Astronomy and Astrophysics. 2001, 372 (3): 935–944. Bibcode:2001A&A...372..935P. arXiv:astro-ph/0104412 . doi:10.1051/0004-6361:20010597.
^ Trilling; Brown, R. H.; Rivkin, A. S.; et al. Circumstellar Dust Disks around Stars with Known Planetary Companions. The Astrophysical Journal. 2000, 529 (1): 499–505 [2012-08-12]. Bibcode:2000ApJ...529..499T. doi:10.1086/308280. （原始內容存檔於2020-02-02）.
^ Beichman, C. A.; Bryden, G.; Rieke, G. H.; Stansberry, J. A.; Trilling, D. E.; Stapelfeldt, K. R.; Werner, M. W.; Engelbracht, C. W.; Blaylock, M.; Gordon, K. D.; Chen, C. H.; Su, K. Y. L.; Hines, D. C. Planets and Infrared Excesses: Preliminary Results from a Spitzer MIPS Survey of Solar-Type Stars. The Astrophysical Journal. 2005, 622 (2): 1160–1170. Bibcode:2005ApJ...622.1160B. arXiv:astro-ph/0412265 . doi:10.1086/428115.
^ Bryden, G.; Beichman, C. A.; Carpenter, J. M.; Rieke, G. H.; Stapelfeldt, K. R.; Werner, M. W.; Tanner, A. M.; Lawler, S. M.; Wyatt, M. C.; Trilling, D. E.; Su, K. Y. L.; Blaylock, M.; Stansberry, J. A. Planets and Debris Disks: Results from a Spitzer/MIPS Search for Infrared Excess. The Astrophysical Journal. 2009, 705 (2): 1226–1236. Bibcode:2009ApJ...705.1226B. doi:10.1088/0004-637X/705/2/1226.
^ Caer McCabe & Carlotta Pham. Catalog of withdrawn or refuted resolved Disks. Catalog of Resolved Circumstellar Disks. [2010-04-03]. （原始內容存檔於2009-01-05）.

外部連結

HD 210277. Exoplanets. [2012-08-12]. （原始內容存檔於2009-11-25）.
The Planet Around HD 210277
Location
Simulation Exoplanets
Phase Orbital HD 210277

[Butler2006-1] Butler, R. P.; et al. Catalog of Nearby Exoplanets. The Astrophysical Journal. 2006, 646 (1): 505–522 [2012-08-12]. Bibcode:2006ApJ...646..505B. arXiv:astro-ph/0607493 . doi:10.1086/504701. （原始內容存檔於2009-05-02）.

[2] Marcy; Butler, R. Paul; Vogt, Steven S.; Fischer, Debra; Liu, Michael C.; et al. Two New Candidate Planets in Eccentric Orbits. The Astrophysical Journal. 1999, 520 (1): 239–247 [2012-08-12]. Bibcode:1999ApJ...520..239M. arXiv:astro-ph/9904275 . doi:10.1086/307451. （原始內容存檔於2020-06-09）.

[3] Han; Black, David C.; Gatewood, George; et al. Preliminary Astrometric Masses for Proposed Extrasolar Planetary Companions. The Astrophysical Journal Letters. 2001, 548 (1): L57–L60 [2012-08-12]. Bibcode:2001ApJ...548L..57H. doi:10.1086/318927. （原始內容存檔於2009-04-29）.

[4] Pourbaix, D. and Arenou, F. Screening the Hipparcos-based astrometric orbits of sub-stellar objects. Astronomy and Astrophysics. 2001, 372 (3): 935–944. Bibcode:2001A&A...372..935P. arXiv:astro-ph/0104412 . doi:10.1051/0004-6361:20010597.

[trilling-5] Trilling; Brown, R. H.; Rivkin, A. S.; et al. Circumstellar Dust Disks around Stars with Known Planetary Companions. The Astrophysical Journal. 2000, 529 (1): 499–505 [2012-08-12]. Bibcode:2000ApJ...529..499T. doi:10.1086/308280. （原始內容存檔於2020-02-02）.

[6] Beichman, C. A.; Bryden, G.; Rieke, G. H.; Stansberry, J. A.; Trilling, D. E.; Stapelfeldt, K. R.; Werner, M. W.; Engelbracht, C. W.; Blaylock, M.; Gordon, K. D.; Chen, C. H.; Su, K. Y. L.; Hines, D. C. Planets and Infrared Excesses: Preliminary Results from a Spitzer MIPS Survey of Solar-Type Stars. The Astrophysical Journal. 2005, 622 (2): 1160–1170. Bibcode:2005ApJ...622.1160B. arXiv:astro-ph/0412265 . doi:10.1086/428115.

[7] Bryden, G.; Beichman, C. A.; Carpenter, J. M.; Rieke, G. H.; Stapelfeldt, K. R.; Werner, M. W.; Tanner, A. M.; Lawler, S. M.; Wyatt, M. C.; Trilling, D. E.; Su, K. Y. L.; Blaylock, M.; Stansberry, J. A. Planets and Debris Disks: Results from a Spitzer/MIPS Search for Infrared Excess. The Astrophysical Journal. 2009, 705 (2): 1226–1236. Bibcode:2009ApJ...705.1226B. doi:10.1088/0004-637X/705/2/1226.

[8] Caer McCabe & Carlotta Pham. Catalog of withdrawn or refuted resolved Disks. Catalog of Resolved Circumstellar Disks. [2010-04-03]. （原始內容存檔於2009-01-05）.

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