🌌 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: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.19

Radius: 0.51

Gravity: 0.73 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 0.48 AU - 0.76 AU

Year: 310 Days

Day: 45.9 Hours

Environment

Temp: -139 °C

Axial Tilt: 34.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 721.9

Radius: 8.9

Gravity: 9.11 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 0.75 AU - 0.75 AU

Year: 413 Days

Day: 12.7 Hours

Environment

Temp: -143 °C

Axial Tilt: 101.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 30,500,172 km

• M1: 110,702 km (0.075 R)
• M2: 393,293 km (0.025 R)
• M3: 700,417 km (0.115 R)
• M4: 986,149 km (0.101 R)
• M5: 1,364,183 km (0.034 R)
• M6: 1,717,234 km (0.101 R)
• M7: 2,148,375 km (0.078 R)
• M8: 2,532,243 km (0.057 R)
• M9: 2,897,561 km (0.114 R)
• M10: 3,239,991 km (0.045 R)
• M11: 4,844,129 km (0.115 R)
• M12: 5,153,198 km (0.116 R)
• M13: 5,607,826 km (0.07 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 903.6

Radius: 12.9

Gravity: 5.43 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 1.01 AU - 1.41 AU

Year: 846 Days

Day: 11.9 Hours

Environment

Temp: -172 °C

Axial Tilt: 98.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 30,500,172 km

• M1: 160,519 km (0.104 R)
• M2: 577,149 km (0.099 R)
• M3: 1,004,101 km (0.058 R)
• M4: 1,530,536 km (0.117 R)
• M5: 2,261,022 km (0.054 R)
• M6: 3,729,774 km (0.081 R)
• M7: 4,185,150 km (0.065 R)
• M8: 4,766,637 km (0.1 R)
• M9: 5,862,591 km (0.079 R)
• M10: 6,637,209 km (0.064 R)
• M11: 7,096,325 km (0.1 R)
• M12: 7,552,299 km (0.055 R)
• M13: 8,259,747 km (0.036 R)
• M14: 9,205,954 km (0.117 R)
• M15: 9,748,994 km (0.109 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 224.7

Radius: 14.4

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 1.5 AU - 1.74 AU

Year: 1311 Days

Day: 11.4 Hours

Environment

Temp: -187 °C

Axial Tilt: 23.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 30,500,172 km

• M1: 179,069 km (0.107 R)
• M2: 637,437 km (0.082 R)
• M3: 1,085,482 km (0.109 R)
• M4: 1,669,512 km (0.119 R)
• M5: 2,287,501 km (0.106 R)
• M6: 3,388,242 km (0.111 R)
• M7: 4,188,441 km (0.116 R)
• M8: 6,007,701 km (0.068 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 714.2

Radius: 14.2

Gravity: 3.54 G

Time & Orbit

Eccentricity (e): 0.092

Orbit Range: 2.07 AU - 2.49 AU

Year: 2189 Days

Day: 11.8 Hours

Environment

Temp: -204 °C

Axial Tilt: 49.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 30,500,172 km

• M1: 176,675 km (0.097 R)
• M2: 629,807 km (0.034 R)
• M3: 1,270,086 km (0.076 R)
• M4: 1,758,523 km (0.067 R)
• M5: 2,207,616 km (0.072 R)
• M6: 2,676,755 km (0.106 R)
• M7: 4,464,000 km (0.116 R)
• M8: 5,270,034 km (0.11 R)
• M9: 6,145,630 km (0.04 R)
• M10: 7,788,215 km (0.111 R)
• M11: 10,061,803 km (0.103 R)
• M12: 10,683,981 km (0.077 R)
• M13: 11,331,740 km (0.098 R)
• M14: 11,844,711 km (0.043 R)
• M15: 14,692,755 km (0.107 R)
• M16: 16,878,829 km (0.092 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 246.6

Radius: 8.7

Gravity: 3.26 G

Time & Orbit

Eccentricity (e): 0.087

Orbit Range: 2.46 AU - 2.92 AU

Year: 2805 Days

Day: 14.7 Hours

Environment

Temp: -199 °C

Axial Tilt: 48.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 30,500,172 km

• M1: 110,852 km (0.106 R)
• M2: 413,189 km (0.052 R)
• M3: 714,180 km (0.098 R)
• M4: 1,022,651 km (0.116 R)
• M5: 1,360,593 km (0.107 R)
• M6: 1,742,516 km (0.089 R)
• M7: 2,354,222 km (0.042 R)
• M8: 3,432,822 km (0.053 R)
• M9: 3,946,093 km (0.051 R)
• M10: 4,392,792 km (0.1 R)
• M11: 5,454,338 km (0.083 R)
• M12: 5,867,079 km (0.093 R)
• M13: 6,251,545 km (0.032 R)
• M14: 6,525,459 km (0.063 R)
• M15: 6,859,511 km (0.098 R)
• M16: 8,134,384 km (0.072 R)
• M17: 8,521,693 km (0.105 R)
• M18: 9,758,120 km (0.108 R)
• M19: 10,401,989 km (0.074 R)
• M20: 11,146,238 km (0.035 R)
• M21: 11,661,902 km (0.082 R)
• M22: 12,309,212 km (0.1 R)
• M23: 13,926,814 km (0.109 R)
• M24: 14,266,700 km (0.118 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 75.2

Radius: 10.9

Gravity: 0.63 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 3.61 AU - 4.71 AU

Year: 5395 Days

Day: 5.1 Hours

Environment

Temp: -218 °C

Axial Tilt: 19.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 30,500,172 km

• M1: 135,536 km (0.072 R)
• M2: 484,548 km (0.111 R)
• M3: 1,887,476 km (0.051 R)
• M4: 2,496,040 km (0.065 R)
• M5: 2,897,860 km (0.067 R)
• M6: 3,958,958 km (0.064 R)
• M7: 5,261,806 km (0.105 R)
• M8: 5,809,035 km (0.042 R)
• M9: 6,884,344 km (0.045 R)
• M10: 7,539,583 km (0.111 R)
• M11: 9,557,359 km (0.091 R)
• M12: 10,798,274 km (0.099 R)
• M13: 12,299,787 km (0.057 R)
• M14: 14,280,014 km (0.118 R)
• M15: 15,029,649 km (0.064 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 556.8

Radius: 8.4

Gravity: 7.89 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 4.13 AU - 4.43 AU

Year: 5630 Days

Day: 11.6 Hours

Environment

Temp: -205 °C

Axial Tilt: 9.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 30,500,172 km

• M1: 104,419 km (0.091 R)
• M2: 398,230 km (0.074 R)
• M3: 1,001,259 km (0.098 R)
• M4: 1,278,164 km (0.115 R)
• M5: 1,570,478 km (0.094 R)
• M6: 1,963,622 km (0.053 R)
• M7: 2,372,473 km (0.032 R)
• M8: 2,930,024 km (0.07 R)
• M9: 3,445,089 km (0.106 R)
• M10: 3,926,795 km (0.103 R)
• M11: 5,106,523 km (0.112 R)
• M12: 5,471,093 km (0.09 R)
• M13: 8,260,794 km (0.075 R)
• M14: 10,003,161 km (0.111 R)
• M15: 10,619,803 km (0.116 R)
• M16: 11,121,854 km (0.107 R)
• M17: 14,751,846 km (0.115 R)
• M18: 18,378,697 km (0.115 R)
• M19: 19,505,318 km (0.036 R)
• M20: 21,822,739 km (0.096 R)
• M21: 25,350,706 km (0.073 R)
• M22: 27,931,718 km (0.05 R)
• M23: 28,450,673 km (0.093 R)
• M24: 28,712,619 km (0.03 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 406 - 16,980 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit