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LP 816-60

天球赤道座標星圖 20h 52m 33.01679s, −16° 58′ 29.0249″
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LP 816-60
觀測資料
曆元 J2000
星座 摩羯座
星官
赤經 20h 52m 33.01679s[1]
赤緯 -16° 58′ 29.0249″[1]
視星等(V) 11.458[2]
特性
光譜分類M4[3]
天體測定
徑向速度 (Rv)8.5[4] km/s
自行 (μ) 赤經:-309.115 mas/yr
赤緯:37.051 mas/yr
視差 (π)177.9312 ± 0.0365[5] mas
距離18.330 ± 0.004 ly
(5.620 ± 0.001 pc)
詳細資料 [6]
質量0.224+0.022
M
半徑0.266+0.012
R
表面重力 (log g)4.584[7]
溫度3030+27
[8] K
金屬量 [Fe/H]-0.11+0.07
[8] dex
自轉67.6+0.1
d.[9]
自轉速度 (v sin i)2.70+0.66
[7] km/s
年齡2.57+8.15
−1.95
Gyr
其他命名
HIP 103039[1]、​LP 816-60、​NLTT 50038[10]、​TYC 6348-400-1[11]、​2MASS J20523304-1658289
參考資料庫
SIMBAD資料
LP 816-60 is located in the constellation Capricornus
LP 816-60 is located in the constellation Capricornus
LP 816-60
LP 816-60在摩羯座的位置

LP 816-60是一顆位於摩羯座的紅矮星[3] ,光譜類型為M4,距離地球18.6光年。[1]

物理特性

[編輯]

在LP 816-60周圍沒有檢測到大質量行星。[3]這顆恆星的星斑週期為10.6年,[9]色球層的弱磁場平均為4.4G[12]

參考

[編輯]
  1. ^ 1.0 1.1 1.2 1.3 Perryman; et al. HIP 103039. The Hipparcos and Tycho Catalogues. 1997 [2014-11-29]. (原始內容存檔於2016-03-04). 
  2. ^ Koen, C.; Kilkenny, D.; van Wyk, F.; Marang, F. UBV(RI)C JHK observations of Hipparcos-selected nearby stars. Monthly Notices of the Royal Astronomical Society. 2010, 403 (4): 1949–1968. Bibcode:2010MNRAS.403.1949K. doi:10.1111/j.1365-2966.2009.16182.x可免費查閱. 
  3. ^ 3.0 3.1 3.2 Montet, Benjamin T.; Crepp, Justin R.; Johnson, John Asher; Howard, Andrew W.; Marcy, Geoffrey W., The Trends High-Contrast Imaging Survey. Iv. The Occurrence Rate of Giant Planets Around M Dwarfs, The Astrophysical Journal, 2013, 781: 28, S2CID 26620552, arXiv:1307.5849可免費查閱, doi:10.1088/0004-637X/781/1/28 
  4. ^ Henry, Todd J.; Jao, Wei-Chun; Winters, Jennifer G.; Dieterich, Sergio B.; Finch, Charlie T.; Ianna, Philip A.; Riedel, Adric R.; Silverstein, Michele L.; Subasavage, John P.; Vrijmoet, Eliot Halley, The Solar Neighborhood XLIV: RECONS Discoveries within 10 parsecs, The Astronomical Journal, 2018, 155 (6): 265, Bibcode:2018AJ....155..265H, S2CID 53983430, arXiv:1804.07377可免費查閱, doi:10.3847/1538-3881/aac262 
  5. ^ Brown, A. G. A.; et al. Gaia Early Data Release 3: Summary of the contents and survey properties. Astronomy & Astrophysics. 2021, 649: A1. Bibcode:2021A&A...649A...1G. S2CID 227254300. arXiv:2012.01533可免費查閱. doi:10.1051/0004-6361/202039657可免費查閱.  已忽略未知參數|collaboration= (幫助) (勘誤: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
  6. ^ Mann, Andrew W.; Feiden, Gregory A.; Gaidos, Eric; Boyajian, Tabetha; Braun, Kaspar von, How to Constrain Your M Dwarf: Measuring Effective Temperature, Bolometric Luminosity, Mass, and Radius, The Astrophysical Journal, 2015, 804 (1): 64, Bibcode:2015ApJ...804...64M, S2CID 19269312, arXiv:1501.01635可免費查閱, doi:10.1088/0004-637X/804/1/64 
  7. ^ 7.0 7.1 Hojjatpanah, S.; Figueira, P.; Santos, N. C.; Adibekyan, V.; Sousa, S. G.; Delgado-Mena, E.; Alibert, Y.; Cristiani, S.; González Hernández, J. I.; Lanza, A. F.; Di Marcantonio, P.; Martins, J. H. C.; Micela, G.; Molaro, P.; Neves, V.; Oshagh, M.; Pepe, F.; Poretti, E.; Rojas-Ayala, B.; Rebolo, R.; Suárez Mascareño, A.; Zapatero Osorio, M. R., Catalog for the ESPRESSO blind radial velocity exoplanet survey, Astronomy & Astrophysics, 2019, 629: A80, Bibcode:2019A&A...629A..80H, S2CID 199552090, arXiv:1908.04627可免費查閱, doi:10.1051/0004-6361/201834729 
  8. ^ 8.0 8.1 Antoniadis-Karnavas, A.; Sousa, S. G.; Delgado-Mena, E.; Santos, N. C.; Teixeira, G. D. C.; Neves, V., ODUSSEAS: A machine learning tool to derive effective temperature and metallicity for M dwarf stars, Astronomy & Astrophysics, 2020, 636: A9, Bibcode:2020A&A...636A...9A, S2CID 211252698, arXiv:2002.09367可免費查閱, doi:10.1051/0004-6361/201937194 
  9. ^ 9.0 9.1 Suárez Mascareño, A.; Rebolo, R.; González Hernández, J. I., Magnetic cycles and rotation periods of late-type stars from photometric time series, Astronomy & Astrophysics, 2016, 595: A12, Bibcode:2016A&A...595A..12S, S2CID 118555782, arXiv:1607.03049可免費查閱, doi:10.1051/0004-6361/201628586 
  10. ^ Luyten, Willem Jacob. NLTT 50038. NLTT Catalogue. 1979 [2023-03-21]. (原始內容存檔於2016-03-04). 
  11. ^ Perryman; et al. HIP 103039. The Hipparcos and Tycho Catalogues. 1997 [2014-11-29]. (原始內容存檔於2016-03-04). 
  12. ^ Moutou, C.; Hébrard, E. M.; Morin, J.; Malo, L.; Fouqué, P.; Torres-Rivas, A.; Martioli, E.; Delfosse, X.; Artigau, E.; Doyon, R., SPIRou input catalogue: Activity, rotation and magnetic field of cool dwarfs, Monthly Notices of the Royal Astronomical Society, 2017, 472 (4): 4563–4586, arXiv:1709.01650可免費查閱, doi:10.1093/mnras/stx2306