The Rigil Kentaurus System

Rikchik Sun

• Astronomical name: Rigil Kentaurus A (Foot of the Centaur), α Centauri A
• Generally referred to as: Rigil Kentaurus, RK, Rigil
• Rikchik name: Sun / Rikchik Sun (post-contact)
• Spectral class: G2
• Luminosity Class: V
• Absolute visual magnitude: +4.36
• Visual luminosity: 1.56825 x Sol
• Color indices: B-V= +0.64, U-B= +0.23, R-I= +0.22
• Mass: 1.1 x Sol
• Diameter: 1.04 x Sol

Rigil 2 (Rikchik homeworld)

• Rikchik name: Rikchik's Planet
• Orbit Axis = 1.19 AU
• Energy received: 1.107 Earth
• Period: 1.2377 years = 452.0575 days = 10849.3812 hours
• AB Period in local years: 64.57
• Day length: 22.46 hours
• Year length in local days: 483.0535
• Calendar:
  • 7 days in a week (Sun-day, Sky-day, Tree-day, Grass-day, Water-day, Rock-day, Fire-day)
  • 23 days in a block (counted days)
  • 21 blocks in a year (plus a leap day every 19 years) (named after something)
  • 64-65 years = 1 cycle (named after the 7 major gods: Home, Love, Fruit, Book, Death, War, Chaos)
  • Love, Book, War are 64 years long, others are 65
  • 7 cycles = 1 great cycle (counted)
  • 1972 = 5 War 46
  • Year begins at spring solstice in northern hemisphere.
• Gravity: 0.9 G
• Diameter: 6112 miles
• Density: 6.21 (1.125 * Earth)
• Sea-level atmospheric pressure: more!
• Surface Area: 117 million square miles
• Land Area: 39 million square miles

Other planets in system:

• Rigil 1: Rockball at 0.5 AU, called "Spot"

Friend

• Astronomical name: Rigil Kentaurus B
• Rikchik name: Friend Sun
• Spectral class: K4
• Luminosity Class: V
• Absolute visual magnitude: +5.69
• Visual luminosity: 0.461 x Sol
• Color indices: B-V= +0.84, U-B= +0.64, R-I= +0.29
• Mass: 0.85 x Sol
• Diameter: 0.87 x Sol
• Size of Hill Sphere: 0.73166 AU

Planets in system:

A & B together:

• Combined absolute visual magnitude: +4.08
• Combined visual luminosity: 2.02892 x Sol
• Orbit about each other:
  • Period: 79.92 years
  • Semimajor Axis: 23.6109 A.U.s
  • Eccentricity: 0.516
  • Periastron distance: 11.427679 A.U.s
  • Apastron distance: 35.794135 A.U.s
  • Year in which periastron occurs: 1955.56
  • Nearby dates of periastron and apastron:
    • P 1875.64 AD (5 Death 33)
    • A 1915.60 AD (5 War 1)
    • P 1955.56 AD (5 War 33)
    • A 1995.52 AD (5 Chaos 1)
    • P 2035.48 AD (5 Chaos 33)
    • A 2075.44 AD (6 Home 1)
    • P 2115.40 AD (6 Home 33)
  • As seen from A:
    • At periastron, B would appear as magnitude -20.59
    • At apastron, B would appear as magnitude -18.11

Walker

• Astronomical name: Proxima Centauri
• Rikchik name: Walking Star
• Spectral class: M5e
• Luminosity Class: V
• Absolute visual magnitude: +15.49 (increasing to +14.56)
• Visual luminosity: 0.0000555 x Sol (increasing to 0.000131 x Sol)
• Variable type: UV Ceti flare star (eruptive variable)
• Color indices: B-V= +1.83, U-B= +1.43, R-I= +1.66
• Mass: 0.065 x Sol
• Diameter: 0.1 x Sol

Sol

• Rikchik name: Human Sun (post-contact)
• Spectral class: G2
• Luminosity Class: V
• Absolute visual magnitude: +4.85
• Visual luminosity: 1 x Sol
• Color indices: B-V= +0.65, U-B= +0.10
• Mass: 1 x Sol
• Diameter: 1 x Sol
• Angular size of star in sky on Earth: 0.533111 degrees