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This article is on the planet and solar system of Anacreon. For information on Anacreon Province, Anacreon prefecture, or Anacreon subprefecture, see the linked articles.

Anacreon (also known as Anacreon A II) is a planet near the outer end of the Periphery and as part of the Galactic Empire was the capital of Anacreon subprefecture, Anacreon prefecture, and Anacreon Province and later the Anacreon Kingdom.

Solar system

Anacreon system

The planets and larger moons of the Anacreon solar system, to scale

Anacreon is a binary star system. The pair orbit at 73.8 AU with a period of, in Earth terms, 181 yr, 84 days, 14 hr.

Anacreon A (The Sun)

  • Mass: 1.04 suns
  • Equatorial diameter: 1,104,000 km
  • Spectral type: K0
  • Surface temp.: 4,970 K
  • Luminosity: 0.83 suns
    • Anacreon A I (Agamemnon)
      • Agamemnon is a small, close, rapidly revolving planet, nearly tidally locked, about 3,100 km in diameter. It has a trace atmosphere, is mostly silicate, and is no longer geothermically active. In appearance, it is a dark gray with nearly black maria. It is lightly spotted with small craters and has no mountain ranges of any notable size. Agamemnon has two moons, both captured asteroids.
    • First asteroid belt
      • This asteroid belt has about four thousand members wider than 200 km. About 40% percent are mostly silicates and the rest are mostly iron. Most contain significant amounts of nickel, aluminum, magnesium, potassium, and sodium. Many contain significant amounts of cobalt, copper, zinc, tungsten, silver, iridium, gold, and platinum. Twenty-four have been found to contain notable amounts of uranium.
    • Anacreon A II (Anacreon)
      • Anacreon is a terrestrial planet about 20,000 km in diameter. Its surface naturally had an environment suitable for humans: plentiful water, a nitrogen/oxygen atmosphere, 950-1150 millibars at sea level, 1.43 g, and temperatures commonly from -10°F to 120°F. In appearance, it has two small polar ice caps, and surface water coverage of about 50%. Its mantle has solidified and continental drift ceased; there are no active volcanoes or notable mountain ranges. Its composition is iron and nickel, with significant traces of silver, copper, zinc, and cobalt, and small amounts of gold, platinum, tungsten, and thorium. Anacreon has three moons found beyond the one listed here, all captured asteroids.
        • Anacreon A IIa (The Moon)
          • Anacreon A IIa is a Mars-sized moon, mostly iron and nickel with large traces of silver, zinc, and tungsten and small traces of gold, platinum, thorium, and uranium. It is naturally habitable for humans, with 0.56 g gravity, an oxygenated atmosphere, and plentiful water — air pressure, though, is low, averaging 870 millibars, temperature is low, ranging from -80°F to 85°F, and the air contains a rather low percentage of oxygen and a high, though nontoxic, level of ammonia. It has native life, limited to photosynthesizing microbes. It was first colonized by Anacreonians near the end of the anarchic era; terraforming was limited to addition of plants for higher oxygen levels and release of greenhouse gases for higher temperatures.
    • Anacreon A III (Meneleus)
      • Meneleus is a planet slightly larger than Earth. It naturally had a small amount of surface water, two small ice caps, and a sizable amount of frozen subsurface water; the atmosphere was mostly carbon dioxide and thin, about 500 millibars. It was terraformed over 350 years in the early imperial era by release of oxygen, buffer gases, and greenhouse gases and addition of plant life. It is inhabited by humans genetically altered for the low air pressure.
    • Second asteroid belt
      • This asteroid belt has about ten thousand members wider than 200 km. About 70% are mostly iron and the rest are mostly silicates. Most all of these have large amounts of tungsten, platinum, gold, silver, cobalt, copper, nickel, and zinc. About 25% have thorium and about 15% have uranium.
    • Anacreon A IV (Achilles)
      • Achilles is a gas giant between Saturn- and Neptune-size, about 1.7 times as dense as water, with a strong equatorial bulge. In appearance, it is a dark, yellow-biased red, with scattered orange patches indicating storm systems. Achilles has additional moons not listed here: one within the orbit of Neoptolemus, four between that and Ulysses, and twenty outside of Ulysses'; all of these others are captured asteroids.
        • Anacreon A IVa (Neoptolemus)
          • Neoptolemus is a small, cold moon, about 3,200 km in diameter, moderately geothermically active, composed of silicates. It is covered with a planetwide layer of liquid ammonia, about 400-500 m thick, covered with a layer of frozen ammonia, about 20-40 m thick. There is a thin atmosphere, mostly noble gases with a trace of hydrogen. It has no known life.
        • Anacreon A IVb (Ulysses)
          • Ulysses is similar to Neoptolemus in composition, surface ammonia, and atmospheric composition and pressure. It differs in smaller size — 1,400 km in diameter —, lack of geothermic activity, and lack of liquid ammonia. The planetwide layer of frozen ammonia is approximately 8 meters thick. Ulysses has two moons, both of which are captured asteroids.
    • Anacreon A V (Priam)
      • Priam is a gas giant, slightly larger than Saturn, about 1.2 times as dense as water. Its surface is made of eastflowing light blue regions and westblowing darker regions, with scattered deeper blue storms, mostly found in the northern hemisphere. Priam has eighteen moons not listed here, all of which are captured asteroids. Two are within the orbit of Hecate, one is between Hecate and Hector, and fifteen are beyond Hector.
        • Anacreon A Va (Hecate)
          • Hecate is a moon about 2,500 km wide, mostly iron and nickel, highly geothermically active, with pale, yellowish-green, nearly opaque cloud cover and a very high surface temperature. The atmosphere is mostly carbon dioxide and noble gases with significant levels of hydrogen fluoride, sulfuric acid, and ammonia. The surface environment is very hostile to humans, with no water, an average temperature of 800 K, constant 70-140 km/h winds, frequent and explosive volcanic eruptions, and large traces of lead and arsenic in the ground. It has no known life. Hecate has one moon, a captured asteroid.
        • Anacreon A Vb (Hector)
          • Hector is an inactive moon about 800 km in diameter, composed of iron and nickel, with a thin atmosphere of ammonia and noble gases. In appearance, it has a very low albedo, scattered small maria, and several dozen small craters. It contains, relatively, very high amounts of gold, silver, platinum, cobalt, copper, zinc, tungsten, iridium, lead, thorium and uranium.
    • Anacreon A VI (Helen)
      • Helen is a gas giant a bit larger than Uranus, 0.8 times as dense as water. It is magenta with slightly lighter streaking. Helen has nine moons, all of which are captured asteroids.
    • Anacreon A VII / Anacreon B IV (Paris)
      • Paris is a small, cold planet, about 1,200 km in diameter, with virtually no atmosphere. It and its moon, a captured asteroid, circle about a barycenter a small distance above Paris' surface. The Paris planetary system is centered on the Lagrangian point between Anacreon A and B.

Anacreon B (Diana)

  • Mass: 0.94 suns
  • Equatorial diameter: 948,300 km
  • Spectral type: K2
  • Surface temp.: 4,680 K
  • Luminosity: 0.81 suns
    • First asteroid belt
      • This asteroid belt has about the same composition as those of Anacreon A's second belt, aside from slightly lower percentages of iridium, platinum, and gold and higher levels of thorium and uranium. It has about eight thousand members wider than 200 km.
    • Anacreon B I
      • Anacreon B I is a 4,000 km wide planet composed of iron and nickel with no significant amounts of valuable metals; it is not geothermically active. It has an atmosphere of about 230-250 millibars at surface, composed of hydrogen fluoride, carbon dioxide, noble gases with occasional small wind storms and light cloud cover. There are no surface pools of fluid; there are small pockets of frozen hydrogen fluoride found 1-3 meters underground planetwide. Surface temperatures average 300 K. It has four moons, captured asteroids, and also has groups of a few small asteroids at the Lagrangian points preceding and following it in its orbit.
    • Second asteroid belt
      • This asteroid belt is composed of about twelve thousand members wider than 200 km; of those, about five hundred are wider than 1000 km. These are mostly predominantly iron, with about 20% being 15% or more nickel. There are significant amounts of silver, cobalt, copper, zinc, and lead, and, relatively, exceptionally high amounts of tungsten, iridium, gold, and platinum. Virtually all have useful amounts of thorium and uranium.
    • Anacreon B II
      • Anacreon B II is a 3,400 km wide heavily cratered planet composed of silicates and is geothermically inactive. It has a 2 millibar atmosphere of noble gases and hydrogen fluoride. Pockets of frozen hydrogen fluoride are found in some polar craters. It has seven unlisted moons, captured asteroids, and two groups, with no sizable asteroids, at its preceding and following Lagrangian points.
        • Anacreon B IIa
          • Anacreon B IIa is a 900 km wide moon found between the orbits of Anacreon B II's first and second asteroidal satellites. It is silicate and inactive with no significant atmosphere or frozen solvents. It has one large and two small maria, two large craters with ray systems, and several hundred small craters. It has no moons, and one binary system of captured asteroids at its following Lagrangian point.
    • Anacreon B III
      • Anacreon B III is 5,000 km wide, iron and nickel with a large amount of thorium, atmosphere-less, inactive, and has scattered mountain ranges and small maria. It has two asteroidal moons and asteroid groups at both of its orbital Langrangian points, with no sizable members.

Oort cloud

This is a spherical collection of cometary bodies, composed of frozen water and/or hydrogen fluoride with small traces of iron. Its outer border is about 1,600 AU from the binary system's barycenter. It is estimated to have about twenty thousand objects over 15 km in diameter.

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