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  • Sirius - Wikipedia
    Sirius is a binary star consisting of a main-sequence star of spectral type A0 or A1, termed Sirius A, and a faint white dwarf companion of spectral type DA2, termed Sirius B The distance between the two varies between 8 2 and 31 5 astronomical units as they orbit every 50 years
  • Sirius’ Proper Motion - YouTube
    How does the star Sirius move across the sky over a vast time? Well, like this Learn more about binary stars hereBinary Stars: Visual and Spectroscopic: ht
  • Discovering Sirius B - University of Arizona
    The proper motion of Sirius and its companion The dark sinuous curve is the path of Sirius while the dotted curve is that of Sirius B The straight line is the path of the center of mass of the system
  • Lecture 6: The Motions of the Stars - Ohio State University
    Proper motions were first noted by Edmund Halley in 1718 for three bright stars: Sirius, Aldebaran, and Arcturus, by comparing his measurements of their positions to those of Hipparchus of Rhodes (300BC)
  • Sirius - Explaining Science
    All the stars in the Milky Way are in slightly different orbits around its centre So, the stars gradually move with respect to each other This causes Sirius to move 1 33 arcseconds a year compared to the background of much more distant stars This movement is called proper motion
  • Sirius - α Canis Majoris (alpha Canis Majoris) - TheSkyLive
    Sirius, also designated as α Canis Majoris, is a multiple main-sequence star of magnitude -1 46 in the constellation of Canis Major Find complete information about Sirius on TheSkyLive com
  • Sirius (α CMa): Star System, Facts, Location, Constellation - Star Facts
    Sirius, Alpha Canis Majoris (α CMa), is the luminary of the constellation Canis Major (the Great Dog) and the brightest star in the sky It is also one of the nearest stars to Earth
  • Sirius: The brightest star in Earths night sky | Space
    Sirius, also known as the Dog Star or Sirius A, is the brightest star in Earth's night sky The name means "glowing" in Greek — a fitting description, as only a few planets, the full moon and the
  • astrophysics - Why does Sirius proper motion wiggle with a 1 year . . .
    In the case of Sirius AB, this wiggle is superimposed on a motion caused by the binary orbit of the two components in the Sirius AB system and by the motion of the Sirius system with respect to the Sun projected onto the plane of the sky - the proper motion
  • Proper motion - Wikipedia
    Proper motion is the astrometric measure of changes in the apparent places of stars or other celestial objects as they move relative to the center of mass of the Solar System It is measured relative to the distant stars or a stable reference such as the International Celestial Reference Frame (ICRF) [1]





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