Solar System

The Solar System is the gravitationally bound system of the Sun and the objects that orbit it. It formed 4.6 billion years ago from the gravitational collapse of a... Wikipedia

  • Age:  4.568 billion years
  • Location:  Local Interstellar Cloud, Local Bubble, Orion–Cygnus Arm, Milky Way
  • System mass:  1.0014 solar masses
  • Nearest star:  Proxima Centauri (4.2441 ly), Alpha Centauri (4.37 ly)
  • Nearest known planetary system:  Proxima Centauri system (4.2441 ly)
  • Semi-major axis of outer knownplanet (Neptune):  30.11 AU, (4.5 bill. km, 2.8 bill. mi)
  • Distance to Kuiper cliff:  ~50 AU
  • Stars:  1 (Sun)
  • Known planets:  8 declared by IAU: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
  • Known dwarf planets:  9 by general consensus: Ceres, Orcus, Pluto, Haumea, Quaoar, Makemake, Gonggong, Eris, Sedna
  • Known natural satellites:  657 (206 planetary, 451 minor planetary)
  • Known minor planets:  1,199,224
  • Known comets:  4,402
  • Identified rounded satellites:  19
  • Invariable-to- galactic plane inclination:  60.19° (ecliptic)
  • Distance to Galactic Center:  27,000 ± 1,000 ly
  • Orbital speed:  220 km/s, 136 mi/s
  • Orbital period:  225–250 myr
  • Spectral type:  G2V
  • Frost line:  ≈5 AU
  • Distance to heliopause:  ≈120 AU
  • Hill sphere radius:  ≈1–3 ly
  • Data source:  DuckDuckGo
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