🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.69

Radius: 0.86

Gravity: 0.93 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 0.53 AU - 0.63 AU

Year: 285 Days

Day: 33.8 Hours

Environment

Temp: -136 °C

Axial Tilt: 13.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 109.5

Radius: 13.3

Gravity: 0.62 G

Time & Orbit

Eccentricity (e): 0.199

Orbit Range: 0.56 AU - 0.84 AU

Year: 378 Days

Day: 12.9 Hours

Environment

Temp: -129 °C

Axial Tilt: 0.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 45,803,789 km

• M1: 165,455 km (0.093 R)
• M2: 802,443 km (0.038 R)
• M3: 1,299,706 km (0.089 R)
• M4: 2,108,283 km (0.083 R)
• M5: 2,712,808 km (0.111 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 704.5

Radius: 10.7

Gravity: 6.15 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 0.72 AU - 0.88 AU

Year: 462 Days

Day: 6.3 Hours

Environment

Temp: -150 °C

Axial Tilt: 12.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 45,803,789 km

• M1: 133,292 km (0.112 R)
• M2: 486,492 km (0.115 R)
• M3: 1,378,844 km (0.095 R)
• M4: 2,066,994 km (0.04 R)
• M5: 2,705,029 km (0.11 R)
• M6: 3,127,493 km (0.089 R)
• M7: 4,120,075 km (0.108 R)
• M8: 4,742,402 km (0.116 R)
• M9: 5,277,962 km (0.072 R)
• M10: 6,193,202 km (0.118 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 693

Radius: 14.2

Gravity: 3.44 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 0.75 AU - 1.13 AU

Year: 588 Days

Day: 13.2 Hours

Environment

Temp: -164 °C

Axial Tilt: 23.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 45,803,789 km

• M1: 176,675 km (0.115 R)
• M2: 658,979 km (0.092 R)
• M3: 1,351,916 km (0.114 R)
• M4: 1,952,701 km (0.062 R)
• M5: 2,510,103 km (0.113 R)
• M6: 3,066,607 km (0.101 R)
• M7: 3,759,095 km (0.078 R)
• M8: 4,663,115 km (0.035 R)
• M9: 5,201,069 km (0.107 R)
• M10: 5,816,664 km (0.053 R)
• M11: 7,194,910 km (0.105 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 326.3

Radius: 10.5

Gravity: 2.96 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 0.8 AU - 1.18 AU

Year: 636 Days

Day: 12.2 Hours

Environment

Temp: -156 °C

Axial Tilt: 27.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 45,803,789 km

• M1: 130,599 km (0.092 R)
• M2: 460,911 km (0.085 R)
• M3: 922,869 km (0.059 R)
• M4: 1,520,962 km (0.048 R)
• M5: 2,114,566 km (0.03 R)
• M6: 2,711,910 km (0.047 R)
• M7: 3,106,400 km (0.062 R)
• M8: 3,454,364 km (0.066 R)
• M9: 3,815,643 km (0.095 R)
• M10: 4,454,875 km (0.112 R)
• M11: 4,991,782 km (0.114 R)
• M12: 5,689,057 km (0.114 R)

Asteroid Belt

Center: 2.35 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 3.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 808.2

Radius: 11.7

Gravity: 5.9 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 3.33 AU - 4.09 AU

Year: 4614 Days

Day: 8.2 Hours

Environment

Temp: -199 °C

Axial Tilt: 46.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 45,803,789 km

• M1: 145,559 km (0.109 R)
• M2: 593,604 km (0.065 R)
• M3: 966,253 km (0.088 R)
• M4: 1,561,503 km (0.053 R)
• M5: 1,986,361 km (0.107 R)
• M6: 2,797,779 km (0.071 R)
• M7: 3,270,359 km (0.067 R)
• M8: 3,751,915 km (0.062 R)
• M9: 5,690,105 km (0.11 R)
• M10: 6,744,620 km (0.087 R)
• M11: 7,635,475 km (0.044 R)
• M12: 8,411,140 km (0.113 R)
• M13: 9,197,726 km (0.082 R)
• M14: 9,609,120 km (0.103 R)
• M15: 11,146,986 km (0.049 R)
• M16: 12,243,239 km (0.114 R)
• M17: 18,564,049 km (0.108 R)
• M18: 20,447,187 km (0.067 R)
• M19: 22,528,392 km (0.095 R)
• M20: 23,889,134 km (0.103 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 990.8

Radius: 13.9

Gravity: 5.13 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 4.24 AU - 6.26 AU

Year: 7767 Days

Day: 11.7 Hours

Environment

Temp: -213 °C

Axial Tilt: 9.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 45,803,789 km

• M1: 174,431 km (0.108 R)
• M2: 607,667 km (0.111 R)
• M3: 1,091,167 km (0.083 R)
• M4: 1,654,104 km (0.07 R)
• M5: 2,284,060 km (0.085 R)
• M6: 3,093,235 km (0.091 R)
• M7: 3,529,463 km (0.103 R)
• M8: 4,331,008 km (0.106 R)
• M9: 6,154,905 km (0.076 R)
• M10: 7,478,547 km (0.072 R)
• M11: 7,973,716 km (0.112 R)
• M12: 9,355,103 km (0.081 R)
• M13: 10,428,617 km (0.1 R)
• M14: 11,206,676 km (0.09 R)
• M15: 13,835,559 km (0.078 R)
• M16: 16,643,062 km (0.036 R)
• M17: 17,418,278 km (0.119 R)
• M18: 18,738,629 km (0.09 R)
• M19: 19,967,426 km (0.07 R)
• M20: 23,623,598 km (0.116 R)
• M21: 24,603,015 km (0.092 R)
• M22: 25,795,310 km (0.09 R)
• M23: 28,693,470 km (0.057 R)
• M24: 29,196,717 km (0.092 R)
• M25: 30,428,656 km (0.109 R)
• M26: 31,163,181 km (0.112 R)
• M27: 31,695,002 km (0.098 R)
• M28: 32,886,399 km (0.061 R)
• M29: 34,107,567 km (0.073 R)
• M30: 35,937,298 km (0.063 R)
• M31: 36,994,955 km (0.099 R)
• M32: 37,471,574 km (0.083 R)
• M33: 40,796,985 km (0.098 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 250 - 17,023 AU

Composition

Type: Cometary Reservoir

System's final boundary, containing trillions of icy planetesimals.

Gravitational Limit