🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.77

Radius: 1.26

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.231

Orbit Range: 0.4 AU - 0.64 AU

Year: 242 Days

Day: 38.9 Hours

Environment

Temp: -128 °C

Axial Tilt: 19.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.93

Radius: 0.97

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.038

Orbit Range: 0.63 AU - 0.67 AU

Year: 338 Days

Day: 39.3 Hours

Environment

Temp: -128 °C

Axial Tilt: 37.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 23,956,009 km

• M1: 29,321 km (0.08 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 667.3

Radius: 12.2

Gravity: 4.48 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 0.66 AU - 0.82 AU

Year: 411 Days

Day: 7 Hours

Environment

Temp: -132 °C

Axial Tilt: 8.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 23,956,009 km

• M1: 151,692 km (0.111 R)
• M2: 589,565 km (0.042 R)
• M3: 999,763 km (0.081 R)
• M4: 1,470,697 km (0.115 R)
• M5: 2,224,520 km (0.071 R)
• M6: 2,939,897 km (0.118 R)
• M7: 3,369,542 km (0.098 R)
• M8: 3,778,393 km (0.07 R)
• M9: 4,260,996 km (0.111 R)
• M10: 5,100,839 km (0.076 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 821.6

Radius: 13.8

Gravity: 4.31 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 0.93 AU - 0.99 AU

Year: 607 Days

Day: 9 Hours

Environment

Temp: -152 °C

Axial Tilt: 24.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 23,956,009 km

• M1: 172,038 km (0.095 R)
• M2: 686,804 km (0.091 R)
• M3: 1,266,496 km (0.071 R)
• M4: 1,720,525 km (0.063 R)
• M5: 2,455,649 km (0.061 R)
• M6: 3,550,406 km (0.082 R)
• M7: 4,039,143 km (0.081 R)
• M8: 4,701,263 km (0.056 R)
• M9: 5,345,730 km (0.113 R)
• M10: 6,224,169 km (0.103 R)
• M11: 6,708,567 km (0.087 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 746.5

Radius: 14.8

Gravity: 3.41 G

Time & Orbit

Eccentricity (e): 0.038

Orbit Range: 1.06 AU - 1.14 AU

Year: 745 Days

Day: 8.9 Hours

Environment

Temp: -161 °C

Axial Tilt: 44.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 23,956,009 km

• M1: 185,352 km (0.065 R)
• M2: 691,142 km (0.079 R)
• M3: 1,324,689 km (0.058 R)
• M4: 1,792,332 km (0.091 R)
• M5: 2,848,343 km (0.055 R)
• M6: 3,321,970 km (0.097 R)
• M7: 3,805,022 km (0.111 R)
• M8: 4,495,715 km (0.08 R)
• M9: 5,054,463 km (0.1 R)
• M10: 6,009,795 km (0.108 R)
• M11: 7,216,601 km (0.09 R)
• M12: 7,818,434 km (0.037 R)
• M13: 8,304,178 km (0.059 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 712.4

Radius: 8.1

Gravity: 10.86 G

Time & Orbit

Eccentricity (e): 0.096

Orbit Range: 1.11 AU - 1.35 AU

Year: 881 Days

Day: 14.3 Hours

Environment

Temp: -168 °C

Axial Tilt: 23.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 23,956,009 km

• M1: 100,679 km (0.082 R)
• M2: 386,860 km (0.107 R)
• M3: 700,417 km (0.068 R)
• M4: 1,094,757 km (0.095 R)
• M5: 1,347,877 km (0.073 R)
• M6: 1,862,493 km (0.088 R)
• M7: 2,207,317 km (0.077 R)
• M8: 2,835,628 km (0.081 R)
• M9: 3,321,970 km (0.049 R)
• M10: 3,710,925 km (0.1 R)
• M11: 4,260,248 km (0.113 R)
• M12: 4,898,732 km (0.115 R)
• M13: 6,067,540 km (0.086 R)
• M14: 6,875,219 km (0.032 R)
• M15: 7,388,340 km (0.115 R)
• M16: 8,491,026 km (0.111 R)
• M17: 8,890,901 km (0.104 R)
• M18: 9,303,342 km (0.08 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 203.7

Radius: 15

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.005

Orbit Range: 2.2 AU - 2.22 AU

Year: 2121 Days

Day: 15 Hours

Environment

Temp: -194 °C

Axial Tilt: 33.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 23,956,009 km

• M1: 186,997 km (0.117 R)
• M2: 666,459 km (0.087 R)
• M3: 1,159,683 km (0.08 R)
• M4: 1,697,637 km (0.109 R)
• M5: 2,727,169 km (0.081 R)
• M6: 3,317,632 km (0.093 R)
• M7: 3,976,760 km (0.12 R)
• M8: 7,182,643 km (0.112 R)
• M9: 7,840,424 km (0.116 R)
• M10: 9,335,954 km (0.042 R)
• M11: 9,813,770 km (0.054 R)
• M12: 11,246,020 km (0.103 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 730.1

Radius: 12.2

Gravity: 4.91 G

Time & Orbit

Eccentricity (e): 0.204

Orbit Range: 2.42 AU - 3.66 AU

Year: 3422 Days

Day: 9.1 Hours

Environment

Temp: -206 °C

Axial Tilt: 4.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 23,956,009 km

• M1: 151,842 km (0.051 R)
• M2: 541,843 km (0.07 R)
• M3: 1,979,030 km (0.058 R)
• M4: 3,109,392 km (0.093 R)
• M5: 3,817,289 km (0.069 R)
• M6: 4,490,928 km (0.07 R)
• M7: 5,319,251 km (0.119 R)
• M8: 6,598,912 km (0.116 R)
• M9: 7,836,385 km (0.1 R)
• M10: 8,492,821 km (0.039 R)
• M11: 8,889,405 km (0.119 R)
• M12: 10,315,222 km (0.074 R)
• M13: 11,666,689 km (0.062 R)
• M14: 12,569,512 km (0.112 R)
• M15: 19,360,657 km (0.111 R)
• M16: 20,884,910 km (0.118 R)
• M17: 21,476,570 km (0.116 R)
• M18: 22,350,969 km (0.102 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: 285 - 17,982 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit