stem passing through the barycenter". 2009-04-03. 2009-04-20 දින මුල් පිටපත වෙතින් සංරක්ෂණය කරන ලදී. සම්ප්‍රවේශය 2009-04-03. (produced with Solex 10 written by Aldo Vitagliano; see also Invariable plane)↑ Yeomans, Donald K. (April 7, 2008). "HORIZONS System". NASA JPL. සම්ප්‍රවේශය 2008-04-07.↑ 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 Munsell, Kirk (May 28, 2009). "Mercury: Facts & Figures". Solar System Exploration. NASA. සම්ප්‍රවේශය 2008-04-07. {{cite web}}: Unknown parameter |coauthors= ignored (|author= suggested) (help)↑ 5.0 5.1 Seidelmann, P. Kenneth (2007). "Report of the IAU/IAGWorking Group on cartographic coordinates and rotational elements: 2006". Celestial Mechanics and Dynamical Astronomy. 90: 155–180. doi:10.1007/s10569-007-9072-y. සම්ප්‍රවේශය 2007-08-28. {{cite journal}}: Unknown parameter |coauthors= ignored (|author= suggested) (help)↑ Margot, L.J. (2007). "Large Longitude Libration of Mercury Reveals a Molten Core". Science. 316 (5825): 710–714. Bibcode:2007Sci...316..7