🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.7

Radius: 1.86

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 0.58 AU - 0.68 AU

Year: 323 Days

Day: 45.9 Hours

Environment

Temp: -133 °C

Axial Tilt: 49.1 °

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: 713.4

Radius: 14.8

Gravity: 3.26 G

Time & Orbit

Eccentricity (e): 0.214

Orbit Range: 0.55 AU - 0.85 AU

Year: 378 Days

Day: 10.4 Hours

Environment

Temp: -138 °C

Axial Tilt: 15.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 61,221,348 km

• M1: 194,627 km (0.111 R)
• M2: 906,563 km (0.089 R)
• M3: 1,623,436 km (0.025 R)
• M4: 2,241,874 km (0.097 R)
• M5: 2,801,968 km (0.036 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 46.7

Radius: 15

Gravity: 0.21 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 1.32 AU - 1.74 AU

Year: 1222 Days

Day: 12.9 Hours

Environment

Temp: -189 °C

Axial Tilt: 49.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 61,221,348 km

• M1: 186,997 km (0.083 R)
• M2: 745,297 km (0.098 R)
• M3: 1,682,976 km (0.12 R)
• M4: 2,733,003 km (0.06 R)
• M5: 3,228,322 km (0.117 R)
• M6: 3,796,046 km (0.08 R)
• M7: 4,274,759 km (0.113 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 730.9

Radius: 11.3

Gravity: 5.72 G

Time & Orbit

Eccentricity (e): 0.163

Orbit Range: 1.39 AU - 1.93 AU

Year: 1381 Days

Day: 7.5 Hours

Environment

Temp: -174 °C

Axial Tilt: 32.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 61,221,348 km

• M1: 140,772 km (0.116 R)
• M2: 556,803 km (0.106 R)
• M3: 1,220,868 km (0.072 R)
• M4: 1,878,052 km (0.089 R)
• M5: 2,462,979 km (0.105 R)
• M6: 3,151,728 km (0.074 R)
• M7: 3,630,441 km (0.112 R)
• M8: 4,175,127 km (0.058 R)
• M9: 4,715,325 km (0.101 R)
• M10: 5,218,123 km (0.109 R)
• M11: 5,689,805 km (0.061 R)
• M12: 6,073,674 km (0.06 R)
• M13: 6,596,219 km (0.118 R)
• M14: 7,462,690 km (0.084 R)
• M15: 7,840,873 km (0.116 R)
• M16: 8,548,172 km (0.083 R)
• M17: 10,654,360 km (0.083 R)
• M18: 11,773,801 km (0.115 R)
• M19: 12,287,520 km (0.041 R)
• M20: 12,777,753 km (0.102 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 261.2

Radius: 8.7

Gravity: 3.45 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 1.72 AU - 2.78 AU

Year: 2179 Days

Day: 10.9 Hours

Environment

Temp: -192 °C

Axial Tilt: 38.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 61,221,348 km

• M1: 110,852 km (0.101 R)
• M2: 406,308 km (0.093 R)
• M3: 709,991 km (0.095 R)
• M4: 1,540,708 km (0.091 R)
• M5: 2,029,744 km (0.046 R)
• M6: 2,844,304 km (0.119 R)
• M7: 3,169,380 km (0.119 R)
• M8: 4,243,344 km (0.116 R)
• M9: 5,436,087 km (0.091 R)
• M10: 8,325,421 km (0.102 R)
• M11: 10,373,864 km (0.114 R)
• M12: 11,567,805 km (0.088 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 754.9

Radius: 14.4

Gravity: 3.64 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 5.02 AU - 5.84 AU

Year: 8170 Days

Day: 13.7 Hours

Environment

Temp: -211 °C

Axial Tilt: 25.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 61,221,348 km

• M1: 179,069 km (0.089 R)
• M2: 852,409 km (0.074 R)
• M3: 1,513,033 km (0.09 R)
• M4: 2,106,936 km (0.077 R)
• M5: 2,600,011 km (0.114 R)
• M6: 3,533,801 km (0.107 R)
• M7: 4,001,893 km (0.06 R)
• M8: 4,483,598 km (0.037 R)
• M9: 5,248,492 km (0.059 R)
• M10: 6,308,093 km (0.056 R)
• M11: 6,889,132 km (0.117 R)
• M12: 8,983,951 km (0.109 R)
• M13: 9,959,628 km (0.12 R)
• M14: 10,548,295 km (0.1 R)
• M15: 17,010,774 km (0.08 R)
• M16: 18,140,387 km (0.111 R)
• M17: 19,546,009 km (0.084 R)
• M18: 21,103,024 km (0.071 R)
• M19: 21,585,776 km (0.082 R)
• M20: 33,405,504 km (0.077 R)
• M21: 35,968,863 km (0.088 R)
• M22: 38,660,727 km (0.072 R)
• M23: 41,610,199 km (0.031 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.64 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 85.5

Radius: 6.9

Gravity: 1.8 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 8.5 AU - 10.78 AU

Year: 19326 Days

Day: 15.2 Hours

Environment

Temp: -237 °C

Axial Tilt: 35.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 61,221,348 km

• M1: 249,380 km (0.063 R)
• M2: 722,558 km (0.118 R)
• M3: 1,067,082 km (0.074 R)
• M4: 1,830,330 km (0.092 R)
• M5: 2,336,569 km (0.096 R)
• M6: 3,201,544 km (0.051 R)
• M7: 3,718,704 km (0.041 R)
• M8: 4,748,685 km (0.065 R)
• M9: 5,390,310 km (0.073 R)
• M10: 5,957,137 km (0.083 R)
• M11: 6,845,000 km (0.07 R)
• M12: 8,710,934 km (0.076 R)
• M13: 10,268,996 km (0.115 R)
• M14: 15,356,521 km (0.033 R)
• M15: 16,043,923 km (0.081 R)
• M16: 18,999,827 km (0.059 R)
• M17: 20,755,807 km (0.098 R)
• M18: 33,510,970 km (0.049 R)
• M19: 34,137,636 km (0.097 R)

Planet 8 - Ice Giant

Semi-Major Axis: 11.09 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 251

Radius: 4.6

Gravity: 11.86 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 8.45 AU - 13.73 AU

Year: 23846 Days

Day: 16.4 Hours

Environment

Temp: -222 °C

Axial Tilt: 48.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 61,221,348 km

• M1: 57,146 km (0.097 R)
• M2: 271,969 km (0.084 R)
• M3: 463,604 km (0.078 R)
• M4: 623,674 km (0.118 R)
• M5: 1,533,528 km (0.099 R)
• M6: 1,987,258 km (0.076 R)
• M7: 2,137,604 km (0.049 R)
• M8: 2,657,157 km (0.105 R)
• M9: 3,180,600 km (0.109 R)
• M10: 4,180,812 km (0.105 R)
• M11: 4,653,840 km (0.097 R)
• M12: 7,078,373 km (0.061 R)
• M13: 7,341,516 km (0.111 R)
• M14: 8,266,479 km (0.033 R)
• M15: 8,558,494 km (0.119 R)
• M16: 9,009,382 km (0.115 R)
• M17: 10,798,573 km (0.085 R)
• M18: 11,088,942 km (0.084 R)
• M19: 11,929,383 km (0.103 R)
• M20: 15,061,663 km (0.045 R)
• M21: 15,570,595 km (0.098 R)
• M22: 20,062,870 km (0.114 R)
• M23: 23,269,201 km (0.115 R)
• M24: 26,171,699 km (0.078 R)
• M25: 32,083,208 km (0.094 R)
• M26: 33,167,942 km (0.08 R)
• M27: 35,665,928 km (0.101 R)
• M28: 42,309,868 km (0.106 R)
• M29: 45,845,464 km (0.105 R)
• M30: 46,759,208 km (0.073 R)
• M31: 47,684,920 km (0.114 R)
• M32: 52,167,321 km (0.097 R)
• M33: 53,163,044 km (0.109 R)
• M34: 56,226,061 km (0.032 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 318 - 19,894 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit