Jump to content

User:Exoplanetaryscience/neareststars/Proxima Centauri

From Wikipedia, the free encyclopedia

Proxima Centauri is a small low-mass red dwarf, which is the nearest star to the Sun at 4.24345±0.00083 Light-years. It was discovered in 1915 by Robert Innes and is a distant companion to the trinary system Alpha Centauri. Proxima Centauri is roughly 8700+700
−400 AU from Alpha Centauri AB, and takes 547000+6600
−4000 years to orbit the pair.

Timeline[edit]

  • 1915 - Robert Innes discovers Proxima Centauri with a common proper motion to Alpha Centauri
  • 1917 - Joan Voûte mmeasured Proxima Centauri's parallax as 755±28 milliarcseconds
  • 1928 - Harols Alden measures Proxima Centauri's parallax as roughly 783±5 milliarcseconds, the first well-constrained measure of its distance
  • 1951 - Harlow Shapley announces Proxima Centauri as a flare star
  • 2013 - Proxima b is first discovered through radial velocity variations
  • 2016 - Proxima b is announced
  • 2017 - Proxima Centauri is confirmed to be orbiting Alpha Centauri with an orbital period of 547,000 years.

parameters[edit]

lorem ipsum

Data archive[edit]

Observations and system details[edit]

Parallax[edit]

Plx value Distance (ly) Paper Date Method
783±5 4.165±0.027 [1] 1928 Direct
761±5 4.286±0.028 [2] 1970 Direct
772 4.225 [3] 1979 Direct
771.8±4.1 4.226±0.022 [4] 1991 Direct
769.6±6.1 4.238±0.034 [5] 1995 Direct
768.77±0.37 4.2426±0.0020 [6] 1999 Direct
771.64±2.60 4.227±0.014 [7] 2007 Direct
774.25±2.08 4.213±0.011 [7] 2007 Direct
765.54±2.01 4.260±0.011 [7] 2007 Direct
769.91±0.54 4.2363±0.0030 [8] 2012 Direct
768.13±1.04 4.2461±0.0057 [9] 2014 Direct
768.50±0.20 4.2441±0.0011 [10] 2018 Direct
768.61±0.15 4.24345±0.00083 N/A N/A Aggregate

Proper motion[edit]

Pmra value Pmdec value total pm Paper Date
−3730 772 3809 [11] 1979
−3740±10 756±10 3816±12 [12] 1993
−3775.62±1.50 768.15±1.82 3852.97±1.77 [13] 2001
−3775.75±1.63 765.54±2.01 3852.58±1.99 [7] 2007
−3769.80±2.09 780.10±2.12 3849.67±2.48 [14] 2011
−3761.0±0.6 826.9±0.6 3850.83±0.71 [15] 2014
−3781.306±0.085 769.766±0.189 3858.862±0.121 [10] 2018

Radial velocity[edit]

Radial velocity Paper Date
−15.7 [16] 1970
−16 [17] 1990
−34 [18] 1997
−22.4±0.5 [19] 2006
−22.204±0.032 [20] 2017

Galactic orbit[edit]

Stars within 10 light-years[edit]

Physical parameters[edit]

Spectral type[edit]

Mass[edit]

Radius[edit]

Temperature[edit]

Rotation[edit]

Age[edit]

Photometry[edit]

Wavelengths given in nanometers.

GALEX XMM Standard SDSS PANSTARRS DECaLS 2MASS UKIDSS ALLWISE
FUV NUV UVW2 UVM2 UVW1 U B V U B V R I U G R I Z U G R I Z Y G R Z J H K Z Y J H K W1 W2 W3 W4
140-170 180-275 212 231 291 344 450 543 300-400 400-500 500-600 600-750 750-900 354 475 622 763 905 354 475 622 763 905 1005 475 622 905 1250 1650 2150 882 1031 1248 1631 2201 3400 4600 12000 22000
15.3957±0.0011 14.21 12.95 11.13±0.05 9.45 7.41 5.357±0.023 4.835±0.057 4.384±0.033 4.207±0.331 3.779±0.131 3.838±0.015 3.688±0.025

Physical details[edit]

Planetary system[edit]

Motion[edit]

Catalogs and references[edit]

  1. ^ Alden, Harold L. (November 1928). "Alpha and Proxima Centauri". The Astronomical Journal. 39: 20. doi:10.1086/104871.
  2. ^ Woolley, R.; Epps, E. A.; Penston, M. J.; Pocock, S. B. (1970). "NASA/ADS Search". Ui.adsabs.harvard.edu. 5. Bibcode:1970ROAn....5.....W. Retrieved 30 June 2018.
  3. ^ Zakhozhaj, V. A. (1979). [Nearest stars until 10pc "Nearest stars until 10pc"]. Retrieved 30 June 2018. {{cite journal}}: Check |url= value (help); Cite journal requires |journal= (help)
  4. ^ Gliese, Wilhelm; et al. (1991). "Nearby Stars, Preliminary 3rd Version". Retrieved 30 June 2018. {{cite journal}}: Cite journal requires |journal= (help)
  5. ^ Van Altena, W. F.; Lee, J. T.; Hoffleit, E. D. (1995). "The General Catalogue of Trigonometric Stellar Parallaxes, Fourth Edition". Retrieved 30 June 2018. {{cite journal}}: Cite journal requires |journal= (help)
  6. ^ Benedict, G. Fritz; McArthur, Barbara; Chappell, D. W.; Nelan, E.; Jefferys, W. H.; van Altena, W.; Lee, J.; Cornell, D.; Shelus, P. J.; Hemenway, P. D.; Franz, Otto G.; Wasserman, L. H.; Duncombe, R. L.; Story, D.; Whipple, A. L.; Fredrick, L. W. (August 1999). "Interferometric Astrometry of Proxima Centauri and Barnard's Star Using [ITAL]HUBBLE SPACE TELESCOPE[/ITAL] Fine Guidance Sensor 3: Detection Limits for Substellar Companions". The Astronomical Journal. 118 (2): 1086–1100. doi:10.1086/300975. S2CID 18099356.
  7. ^ a b c d van Leeuwen, F. (13 August 2007). "Validation of the new Hipparcos reduction". Astronomy & Astrophysics. 474 (2): 653–664. doi:10.1051/0004-6361:20078357. S2CID 18759600. Retrieved 30 June 2018.
  8. ^ Kirkpatrick, J. Davy; Gelino, Christopher R.; Cushing, Michael C.; Mace, Gregory N.; Griffith, Roger L.; Skrutskie, Michael F.; Marsh, Kenneth A.; Wright, Edward L.; Eisenhardt, Peter R.; McLean, Ian S.; Mainzer, Amanda K.; Burgasser, Adam J.; Tinney, C. G.; Parker, Stephen; Salter, Graeme (10 July 2012). "Further Defining Spectral Type "Y" and Exploring the Low-mass End of the Field Brown Dwarf Mass Function". The Astrophysical Journal. 753 (2): 156. arXiv:1205.2122. doi:10.1088/0004-637X/753/2/156. ISSN 0004-637X. S2CID 119279752. Retrieved 30 June 2018.
  9. ^ Lurie, John C.; Henry, Todd J.; Jao, Wei-Chun; Quinn, Samuel N.; Winters, Jennifer G.; Ianna, Philip A.; Koerner, David W.; Riedel, Adric R.; Subasavage, John P. (13 October 2014). "The Solar Neighborhood. Xxxiv. A Search for Planets Orbiting Nearby M Dwarfs Using Astrometry". The Astronomical Journal. 148 (5): 91. arXiv:1407.4820. doi:10.1088/0004-6256/148/5/91. S2CID 118492541. Retrieved 30 June 2018.
  10. ^ a b Lindegren, L.; et al. (25 April 2018). "Gaia Data Release 2". Astronomy & Astrophysics. 616: A2. arXiv:1804.09366. doi:10.1051/0004-6361/201832727.
  11. ^ Luyten, Willem J. (1979). "LHS catalogue. A catalogue of stars with proper motions exceeding 0"5 annually". Minneapolis: University of Minnesota. Bibcode:1979lccs.book.....L. Retrieved 14 February 2019.
  12. ^ Turon, C. (July 1993). "Version 2 of the HIPPARCOS Input Catalogue". Bulletin d'Information du Centre de Donnees Stellaires. 43: 5. Bibcode:1993BICDS..43....5T. Retrieved 14 February 2019.
  13. ^ Kharchenko, N. V. (October 2001). "All-sky compiled catalogue of 2.5 million stars". Kinematika I Fizika Nebesnykh Tel. 17 (5): 409. Bibcode:2001KFNT...17..409K. Retrieved 14 February 2019.
  14. ^ Girard, T. M.; van Altena, W. F.; Zacharias, N.; Vieira, K.; Casetti-Dinescu, D. I.; Castillo, D.; Herrera, D.; Lee, Y. S.; Beers, T. C.; Monet, D. G.; Lopez, C. E. (1 July 2011). "The Southern Proper Motion Program IV. The SPM4 Catalog". The Astronomical Journal. 142 (1): 15. arXiv:1104.5708. doi:10.1088/0004-6256/142/1/15. ISSN 0004-6256. S2CID 119210178. Retrieved 14 February 2019.
  15. ^ Lurie, John C.; Henry, Todd J.; Jao, Wei-Chun; Quinn, Samuel N.; Winters, Jennifer G.; Ianna, Philip A.; Koerner, David W.; Riedel, Adric R.; Subasavage, John P. (13 October 2014). "The Solar Neighborhood. Xxxiv. A Search for Planets Orbiting Nearby M Dwarfs Using Astrometry". The Astronomical Journal. 148 (5): 91. arXiv:1407.4820. doi:10.1088/0004-6256/148/5/91. S2CID 118492541.
  16. ^ Woolley, R. (1970). "Catalogue of stars within twenty-five parsecs of the Sun". Royal Observatory Annals. 5. Bibcode:1970ROAn....5.....W. Retrieved 14 February 2019.
  17. ^ Benson, Priscilla J.; Little-Marenin, Irene R.; Woods, Tara C.; Attridge, Joanne M.; Blais, Kristin A.; Rudolph, Dana B.; Rubiera, Myra E.; Keefe, Heidi L. (December 1990). "A catalog of observations for stellar masers". The Astrophysical Journal Supplement Series. 74: 911. Bibcode:1990ApJS...74..911B. doi:10.1086/191526. Retrieved 14 February 2019.
  18. ^ Reid, I. Neill; Hawley, Suzanne L.; Gizis, John E. (October 1995). "The Palomar/MSU Nearby-Star Spectroscopic Survey. I. The Northern M Dwarfs -Bandstrengths and Kinematics". The Astronomical Journal. 110: 1838. Bibcode:1995AJ....110.1838R. doi:10.1086/117655. Retrieved 14 February 2019.
  19. ^ Torres, C. A. O.; Quast, G. R.; da Silva, L.; de la Reza, R.; Melo, C. H. F.; Sterzik, M. (12 September 2006). "Search for associations containing young stars (SACY)". Astronomy & Astrophysics. 460 (3): 695–708. doi:10.1051/0004-6361:20065602. S2CID 16080025. Retrieved 14 February 2019.
  20. ^ Kervella, P.; Thévenin, F.; Lovis, C. (30 January 2017). "Proxima's orbit around Alpha Centauri". Astronomy & Astrophysics. 598: L7. doi:10.1051/0004-6361/201629930. S2CID 50867264.
Retrieved from "https://en.wikipedia.org/w/index.php?title=User:Exoplanetaryscience/neareststars/Proxima_Centauri&oldid=1118566287"