🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.17

Radius: 0.49

Gravity: 0.71 G

Time & Orbit

Eccentricity (e): 0.025

Orbit Range: 0.59 AU - 0.63 AU

Year: 313 Days

Day: 28.8 Hours

Environment

Temp: -130 °C

Axial Tilt: 31.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 76,832,030 km

• M1: 11,818 km (0.116 R)
• M2: 91,105 km (0.1 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.91

Radius: 1.3

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.135

Orbit Range: 0.53 AU - 0.69 AU

Year: 313 Days

Day: 36 Hours

Environment

Temp: -126 °C

Axial Tilt: 34.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 1.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 238.5

Radius: 13.8

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 0.89 AU - 1.31 AU

Year: 757 Days

Day: 9.5 Hours

Environment

Temp: -162 °C

Axial Tilt: 34 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 76,832,030 km

• M1: 172,038 km (0.081 R)
• M2: 609,013 km (0.066 R)
• M3: 1,251,536 km (0.077 R)
• M4: 2,080,607 km (0.094 R)
• M5: 2,964,132 km (0.073 R)
• M6: 3,547,564 km (0.096 R)
• M7: 4,374,092 km (0.074 R)
• M8: 5,538,113 km (0.081 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 219.8

Radius: 10.2

Gravity: 2.11 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 2.87 AU - 3.63 AU

Year: 3844 Days

Day: 11.4 Hours

Environment

Temp: -214 °C

Axial Tilt: 6.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 76,832,030 km

• M1: 129,103 km (0.111 R)
• M2: 465,848 km (0.098 R)
• M3: 930,349 km (0.116 R)
• M4: 1,748,949 km (0.034 R)
• M5: 2,079,261 km (0.106 R)
• M6: 4,726,246 km (0.118 R)
• M7: 5,259,861 km (0.103 R)
• M8: 5,734,984 km (0.12 R)
• M9: 6,342,501 km (0.033 R)
• M10: 8,910,797 km (0.101 R)
• M11: 11,545,066 km (0.105 R)
• M12: 12,348,855 km (0.055 R)
• M13: 12,764,588 km (0.092 R)
• M14: 13,756,123 km (0.119 R)
• M15: 15,601,861 km (0.106 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 558.5

Radius: 8.7

Gravity: 7.38 G

Time & Orbit

Eccentricity (e): 0.029

Orbit Range: 3.69 AU - 3.91 AU

Year: 4859 Days

Day: 9.6 Hours

Environment

Temp: -219 °C

Axial Tilt: 25.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 76,832,030 km

• M1: 108,159 km (0.07 R)
• M2: 554,709 km (0.077 R)
• M3: 2,121,747 km (0.081 R)
• M4: 2,505,016 km (0.081 R)
• M5: 2,862,406 km (0.052 R)
• M6: 3,492,811 km (0.109 R)
• M7: 4,097,635 km (0.087 R)
• M8: 4,924,014 km (0.039 R)
• M9: 5,712,993 km (0.11 R)
• M10: 6,033,581 km (0.036 R)
• M11: 6,678,797 km (0.085 R)
• M12: 7,067,751 km (0.091 R)
• M13: 9,008,485 km (0.081 R)
• M14: 9,727,602 km (0.094 R)
• M15: 10,059,410 km (0.114 R)
• M16: 11,416,562 km (0.092 R)
• M17: 13,598,147 km (0.082 R)
• M18: 13,960,922 km (0.099 R)
• M19: 15,364,898 km (0.066 R)
• M20: 15,645,394 km (0.117 R)
• M21: 15,986,477 km (0.098 R)
• M22: 17,582,986 km (0.102 R)
• M23: 17,951,744 km (0.1 R)
• M24: 18,577,812 km (0.045 R)
• M25: 19,478,540 km (0.066 R)
• M26: 22,070,174 km (0.112 R)
• M27: 22,788,692 km (0.086 R)
• M28: 23,671,320 km (0.097 R)
• M29: 23,970,516 km (0.084 R)
• M30: 24,729,575 km (0.044 R)

Planet 6 - Ice Giant

Semi-Major Axis: 9.68 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 79.6

Radius: 4.5

Gravity: 3.93 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 9.51 AU - 9.85 AU

Year: 19757 Days

Day: 15.1 Hours

Environment

Temp: -230 °C

Axial Tilt: 16 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 76,832,030 km

• M1: 56,249 km (0.067 R)
• M2: 209,437 km (0.057 R)
• M3: 463,753 km (0.103 R)
• M4: 709,842 km (0.044 R)
• M5: 854,653 km (0.117 R)
• M6: 1,172,847 km (0.098 R)
• M7: 2,374,268 km (0.084 R)
• M8: 2,590,437 km (0.112 R)
• M9: 3,231,314 km (0.109 R)
• M10: 5,438,182 km (0.07 R)
• M11: 5,624,132 km (0.102 R)
• M12: 7,046,808 km (0.07 R)
• M13: 7,417,960 km (0.072 R)
• M14: 10,248,202 km (0.06 R)
• M15: 12,777,453 km (0.104 R)
• M16: 17,844,333 km (0.084 R)
• M17: 19,167,526 km (0.084 R)
• M18: 26,330,871 km (0.118 R)
• M19: 35,305,995 km (0.032 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.93 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 669.5

Radius: 6.4

Gravity: 16.35 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 9.33 AU - 10.53 AU

Year: 20527 Days

Day: 15.2 Hours

Environment

Temp: -234 °C

Axial Tilt: 23.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 76,832,030 km

• M1: 80,484 km (0.092 R)
• M2: 281,244 km (0.043 R)
• M3: 490,980 km (0.093 R)
• M4: 1,764,507 km (0.066 R)
• M5: 2,433,209 km (0.064 R)
• M6: 2,690,069 km (0.115 R)
• M7: 5,178,330 km (0.099 R)
• M8: 5,525,846 km (0.089 R)
• M9: 6,310,637 km (0.039 R)
• M10: 7,214,507 km (0.068 R)
• M11: 8,048,216 km (0.027 R)
• M12: 9,847,429 km (0.09 R)
• M13: 15,524,519 km (0.118 R)
• M14: 15,762,978 km (0.085 R)
• M15: 16,328,757 km (0.078 R)
• M16: 16,908,000 km (0.083 R)
• M17: 17,672,894 km (0.113 R)
• M18: 18,728,157 km (0.077 R)
• M19: 19,362,901 km (0.103 R)
• M20: 20,294,298 km (0.098 R)
• M21: 21,060,538 km (0.091 R)
• M22: 22,145,571 km (0.062 R)
• M23: 24,749,322 km (0.071 R)
• M24: 24,965,940 km (0.076 R)
• M25: 26,180,675 km (0.065 R)
• M26: 26,405,670 km (0.096 R)
• M27: 27,550,093 km (0.028 R)
• M28: 41,020,185 km (0.093 R)
• M29: 45,733,715 km (0.093 R)
• M30: 46,060,287 km (0.105 R)
• M31: 46,388,205 km (0.076 R)
• M32: 48,389,376 km (0.089 R)
• M33: 49,411,130 km (0.072 R)
• M34: 54,920,520 km (0.067 R)
• M35: 64,646,177 km (0.11 R)
• M36: 68,837,610 km (0.115 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 289 - 10,508 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit