Alpha Centauri - Wikipedia, the free encyclopedia
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Alpha Centauri (α Centauri / α Cen); (also known as Rigil Kentaurus , Rigil Kent , or Toliman ) is the brightest star in the southern constellation of Centaurus and an established binary star s...
en.wikipedia.org/wiki/Alpha_Centauri
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and Dvorak et al, 1989). Indeed, stable orbits may extend as far as one third of the closest separation between any two stars in a binary system, ... The results included two, roughly Earth-sized planets and two smaller planets, where their orbital distance ranged between that of Mercury (0.4 AU) and Mars (1.5 AU). Hence,
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www.solstation.com/habitable.htm
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The image below compares the apparent sizes of the planets. The outer planets are shown at their closest approach to us and the two inner planets are shown at various distances from us (but all are with the same magnification). ... deriving the relation between distance and angular size...
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www.astronomynotes.com/solarsys/s2.htm
www.astronomynotes.com/solarsys/s2.htm
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9. Great circle right between the poles ... 17. Closest separation between two planets ... 23. Period between two like aspects e.g. two full moons...
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facstaff.buffalostate.edu/mackje/GES131/HeavenlySphere_...
facstaff.buffalostate.edu/mackje/GES131/HeavenlySphere_v2/HeavenlySphere(v2).htm
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At closest approach the pair would appear to merge into a single brilliant star." ; ... The minimum separation between the two planets occurs near 1030 UT. Also shown are the Galilean satellites Io, Europa, Ganymede, and Callisto. The horizontal field of view is approximately 15 arcminutes (the angular separation between...
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science.nasa.gov/headlines/y2000/ast16may_1.htm
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We eventually decided on the title, ‘Two degrees of separation: between hope and despair’ because we want to give the reader a tangible threshold and a clear choice between two distinct options. The debate over the threshold for dangerous climate change is ongoing.
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issuu.com/peacechild/docs/two_degrees_en?mode=embed&doc...
issuu.com/peacechild/docs/two_degrees_en?mode=embed&documentId=080814013835-f012160869ab4941aa1055c2c7008b0d&layout=grey
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Orbits in the range from 1/3 to 3.5 times the stellar separation will always be unstable. Stable orbits can extend up to 1/3 of the closest separation between the two stars. The orbit of the star in its galaxy is also important, determining how often a star and any planets may cross the path of supernovae.
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ccar.colorado.edu/asen5050/projects/projects_2003/finle...
ccar.colorado.edu/asen5050/projects/projects_2003/finley/extrasolar.html
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The exact timing of Mars's opposition, when it passes through perihelion, and when Earth makes its closest approach to Mars determines the minimum separation between the two planets. This year, the timing of these three events has converged to bring Earth somewhat closer to Mars than in the "typical" perihelic opposition.
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faculty.swosu.edu/terry.goforth/publicinfo/moonplanets/...
faculty.swosu.edu/terry.goforth/publicinfo/moonplanets/planets/mars/mars_opposition_2003/mars_opposition_2003.htm
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So to figure out the distance between the two planets, you have to imagine where they can be in ... The closest theoretical point Earth and Mars can be is when Earth is at its aphelion (or most distant point in its orbit), and Mars is at its closest. At this point, the two planets are separated by only 54.6 million km.
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www.universetoday.com/guide-to-space/mars/distance-from...
www.universetoday.com/guide-to-space/mars/distance-from-earth-to-mars/
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