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Orbital Motion Sirius A and Sirius B

Orbital Motion Sirius A and Sirius B. Sirius A. Sirius A. Center of mass. Orbital Motion Sirius A and Sirius B. Orbital plane (looking at an angle). Orbital plane (looking perpendicular to the orbital plane along the red arrow). Sirius A. Sirius A. Center of mass.

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Orbital Motion Sirius A and Sirius B

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  1. Orbital Motion Sirius A and Sirius B Sirius A Sirius A Center of mass

  2. Orbital Motion Sirius A and Sirius B Orbital plane (looking at an angle) Orbital plane (looking perpendicular to the orbital plane along the red arrow) Sirius A Sirius A Center of mass

  3. Orbital Motion Sirius A and Sirius B 124 0 31 62 93 arc-seconds Plane of the Sky Sirius A Sirius A Center of mass

  4. 1850 +6 arc-seconds 0 -6 124 0 31 62 93 arc-seconds Sirius A on the sky Sirius A and B in space

  5. 1855 +6 arc-seconds 0 -6 124 0 31 62 93 arc-seconds

  6. 1860 +6 arc-seconds 0 -6 124 0 31 62 93 arc-seconds

  7. 1865 +6 arc-seconds 0 -6 124 0 31 62 93 arc-seconds

  8. 1870 +6 arc-seconds 0 -6 124 0 31 62 93 arc-seconds

  9. 1875 +6 arc-seconds 0 -6 124 0 31 62 93 arc-seconds

  10. 1880 +6 arc-seconds 0 -6 124 0 31 62 93 arc-seconds The "center of mass" will remain fixed in the following slides. Watch the orbits carefully.

  11. 1885 +6 arc-seconds 0 -6 124 0 31 62 93 arc-seconds

  12. 1890 +6 arc-seconds 0 -6 124 0 31 62 93 arc-seconds

  13. 1895 +6 arc-seconds 0 -6 124 0 31 62 93 arc-seconds

  14. 1900 +6 arc-seconds 0 -6 124 0 31 62 93 arc-seconds

  15. 1905 +6 arc-seconds 0 -6 124 0 31 62 93 arc-seconds

  16. 1910 +6 arc-seconds 0 -6 124 0 31 62 93 arc-seconds

  17. 1915 +6 arc-seconds 0 -6 124 0 31 62 93 arc-seconds

  18. 1920 +6 arc-seconds 0 -6 124 0 31 62 93 arc-seconds

  19. 1925 +6 arc-seconds 0 -6 124 0 31 62 93 arc-seconds

  20. 1930 +6 arc-seconds 0 -6 124 0 31 62 93 arc-seconds

  21. 1935 +6 arc-seconds 0 -6 124 0 31 62 93 arc-seconds

  22. 1940 +6 arc-seconds 0 -6 124 0 31 62 93 arc-seconds

  23. 1945 +6 arc-seconds 0 -6 124 0 31 62 93 arc-seconds

  24. 1950 +6 arc-seconds 0 -6 124 0 31 62 93 arc-seconds

  25. 1955 +6 arc-seconds 0 -6 124 0 31 62 93 arc-seconds

  26. North W E 4 arc-minutes or 1/15 degree Search for Companions Around Sirius J.M. Bonnet-Bidaud , F. Colas and J. Lecacheux Astronomy and Astrophysics v360, 991-996 (2000)

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