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- Poor Pluto got kicked out of the Solar System of 8 planets. It got renamed as a ”Dwarf Planet” because past nine planets were orbiting at least 3 more Kuiper Belt objects that were as big or bigger than Pluto All were orbiting the Sun is the same elliptical plane. These objects having larger orbits were designated Dwarf Planets. Sedna is one that received this title after Pluto.
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- This all took place in 2006. See review # 1660 for discussion about the new Dwarf Planets and the discoveries that caused this to happen.
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- There are millions of school children that need to be retrained, and some of us old codgers as well.
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-Cal Tech astronomers may cause the Astronomical Union to revisit their decision. On January 20, 2016 they announced there was a 9th planet 10 times the mass of the Earth orbiting at 700 AU. “AU” is Astronomical Unit, which s the distance between the Earth and the Sun, 93,000,000 miles.
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- At that distance it takes this 9th planed 10,000 to 20,000 years to complete one orbit. It takes Pluto 248 years. The object is 5,000 Pluto’s mass.
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- The discovery started in 2014 when 13 Kuiper Belt objects were tracked having elliptical orbits tilted at 30 degrees to the ecliptic, the plane of the other Solar System planets.
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- Some other unknown orbiting mass was tilting these orbits. The larger mass had to be orbiting 180 degrees out of phase with these other objects. Its closest approach to the Sun occurs on the opposite side of the Solar System.
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- Astronomers are anxiously trying to “see” this 9th planet. So far its detection has been by computer simulations that duplicate the orbits found of all the new Kuiper Belt objects, at least 11 of them.
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- The Kuiper Belt objects are orbiting 50 to 150 AU. When they come closest to the Sun their perihelia all cluster in the same ecliptic plane. The orbiting clustering must be created by another undetected mass?
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- ( See reviews # about KBO’s, one of the largest named Sedna.)
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- It is amazing that computer simulations can be programmed and re-programmed until the results match observations. This is how astronomers are convinced there is a 9th planet, or a extremely large alien spaceship, out there while not actually seeing it.
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- The simulations work with a wide range of orbit periods, 10,000 to 20,000 years. It requires a highly elliptical orbit spending most of its time in the aphelion . Its brightness magnitude is calculated to be M = 22, too dim to be seen by Earth bound telescope today.
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- Isaac Newton (1642 - 1727) formulates the math for Johan Kepler’s (1571 - 1630) second law of planetary motion, planets in orbit sweep out equal areas over equal times in the plane of the elliptical orbit that traces its path around the locus, the Sun. When the orbit gets near the Sun the object speeds up. As the planet orbits the furthest distance from the locus the objects‘ orbit velocity is the slowest.
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--------------------------------------- p^2 = 4*pi^2 * a^3 / G * ( m +M )
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--------------------------------------- “p” is the orbital period
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-------------------------------------- “ a” is the distance between the masses.
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---------------------------------------- p^2 = a^3 when the period is in years and the distance is in Astronomical Units and the star is the mass of the Sun.
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- So much for the power of circumstantial evidence.
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- Stay tuned, more announcements are bound to follow. While we are finding 2,000 planets orbiting other stars, we are about to find another one orbiting our own star.
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- ( See http://is.gd/proxcen2016 )
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- Request these Reviews to learn more about Pluto and KBO‘s:
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- #1660 - Outside Neptune there are over 100 spherical dwarfs discovered to date.
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- #543 - Name the 10th planet (2005) Johan Kepler figured out Pluto’s period 248.54 years, radius 39.53 AU and the period squared equals the radius cubed in 1596.
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- #1789 Pluto the 1st Dwarf Planet. What is the energy source driving all the activity on Pluto?
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- #1781 - New Horizon visits Pluto July 14, 2015.
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- #1632 - Pluto and the Kuiper Belt Dwarf planets.
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- #502 - Sedna
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- #1727 - #1724 - #1364 - #1129 - #685 all knowledge of Pluto in 2006 soon to be outdated.
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----- 707-536-3272 ---------------- Friday, April 22, 2016 -----
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