🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.74

Radius: 1.69

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 0.43 AU - 0.67 AU

Year: 263 Days

Day: 32.8 Hours

Environment

Temp: -132 °C

Axial Tilt: 49 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 86,294,946 km

• M1: 153,338 km (0.089 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 352.5

Radius: 10.6

Gravity: 3.14 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 0.7 AU - 0.82 AU

Year: 428 Days

Day: 14.9 Hours

Environment

Temp: -139 °C

Axial Tilt: 29.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 86,294,946 km

• M1: 131,945 km (0.119 R)
• M2: 518,207 km (0.102 R)
• M3: 858,841 km (0.107 R)
• M4: 1,199,177 km (0.098 R)
• M5: 1,974,841 km (0.066 R)
• M6: 2,558,722 km (0.061 R)
• M7: 2,946,180 km (0.09 R)
• M8: 3,307,908 km (0.084 R)
• M9: 4,059,488 km (0.077 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 721.3

Radius: 10.3

Gravity: 6.8 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 0.7 AU - 1 AU

Year: 506 Days

Day: 9.5 Hours

Environment

Temp: -147 °C

Axial Tilt: 22.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 86,294,946 km

• M1: 128,056 km (0.097 R)
• M2: 510,278 km (0.11 R)
• M3: 833,709 km (0.069 R)
• M4: 1,404,724 km (0.107 R)
• M5: 1,867,580 km (0.1 R)
• M6: 2,221,977 km (0.116 R)
• M7: 2,715,501 km (0.096 R)
• M8: 3,115,226 km (0.102 R)
• M9: 3,515,999 km (0.109 R)
• M10: 4,174,828 km (0.076 R)
• M11: 4,740,757 km (0.038 R)
• M12: 5,374,154 km (0.092 R)
• M13: 6,118,254 km (0.111 R)
• M14: 6,592,928 km (0.1 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 419.2

Radius: 8.3

Gravity: 6.09 G

Time & Orbit

Eccentricity (e): 0.122

Orbit Range: 1.38 AU - 1.76 AU

Year: 1270 Days

Day: 13.5 Hours

Environment

Temp: -173 °C

Axial Tilt: 22.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 86,294,946 km

• M1: 103,223 km (0.093 R)
• M2: 439,967 km (0.026 R)
• M3: 735,423 km (0.057 R)
• M4: 1,024,745 km (0.104 R)
• M5: 1,308,233 km (0.109 R)
• M6: 1,653,356 km (0.099 R)
• M7: 2,357,513 km (0.084 R)
• M8: 2,685,132 km (0.083 R)
• M9: 3,777,496 km (0.041 R)
• M10: 4,449,489 km (0.07 R)
• M11: 4,732,529 km (0.082 R)
• M12: 5,027,536 km (0.081 R)
• M13: 5,966,113 km (0.107 R)
• M14: 6,578,118 km (0.045 R)
• M15: 7,352,436 km (0.11 R)
• M16: 8,748,633 km (0.096 R)
• M17: 9,081,488 km (0.12 R)

Planet 5 - Ice Giant

Semi-Major Axis: 8.02 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 148.9

Radius: 6.3

Gravity: 3.75 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 6.22 AU - 9.82 AU

Year: 14665 Days

Day: 18 Hours

Environment

Temp: -223 °C

Axial Tilt: 28.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 86,294,946 km

• M1: 78,389 km (0.065 R)
• M2: 298,448 km (0.095 R)
• M3: 541,843 km (0.119 R)
• M4: 2,750,806 km (0.049 R)
• M5: 3,506,424 km (0.093 R)
• M6: 4,261,295 km (0.102 R)
• M7: 4,663,265 km (0.034 R)
• M8: 4,859,238 km (0.095 R)
• M9: 5,956,389 km (0.078 R)
• M10: 7,625,303 km (0.117 R)
• M11: 8,797,851 km (0.102 R)
• M12: 11,343,707 km (0.118 R)
• M13: 14,166,470 km (0.082 R)
• M14: 15,304,909 km (0.098 R)
• M15: 15,802,173 km (0.077 R)
• M16: 17,425,310 km (0.103 R)
• M17: 17,967,303 km (0.1 R)
• M18: 19,371,578 km (0.051 R)
• M19: 21,304,532 km (0.112 R)
• M20: 22,317,609 km (0.086 R)
• M21: 24,355,431 km (0.054 R)
• M22: 25,722,755 km (0.103 R)
• M23: 28,237,645 km (0.098 R)
• M24: 32,513,152 km (0.03 R)
• M25: 35,663,384 km (0.082 R)

Planet 6 - Ice Giant

Semi-Major Axis: 11.16 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 689.8

Radius: 5.2

Gravity: 25.51 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 10.6 AU - 11.72 AU

Year: 24072 Days

Day: 24.1 Hours

Environment

Temp: -241 °C

Axial Tilt: 25.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 86,294,946 km

• M1: 64,776 km (0.082 R)
• M2: 361,578 km (0.074 R)
• M3: 713,881 km (0.094 R)
• M4: 921,672 km (0.09 R)
• M5: 1,183,768 km (0.115 R)
• M6: 2,124,589 km (0.119 R)
• M7: 2,837,572 km (0.101 R)
• M8: 3,107,597 km (0.053 R)
• M9: 4,432,435 km (0.093 R)
• M10: 6,731,007 km (0.113 R)
• M11: 7,260,882 km (0.108 R)
• M12: 8,133,786 km (0.111 R)
• M13: 8,623,270 km (0.11 R)
• M14: 9,423,319 km (0.09 R)
• M15: 11,104,201 km (0.066 R)
• M16: 11,436,009 km (0.079 R)
• M17: 12,975,222 km (0.084 R)
• M18: 13,492,531 km (0.093 R)
• M19: 17,505,793 km (0.061 R)
• M20: 18,971,254 km (0.104 R)
• M21: 22,669,463 km (0.106 R)
• M22: 24,968,333 km (0.097 R)
• M23: 26,115,899 km (0.084 R)
• M24: 33,747,784 km (0.049 R)
• M25: 37,323,173 km (0.117 R)
• M26: 39,278,417 km (0.086 R)
• M27: 39,585,242 km (0.048 R)
• M28: 43,884,236 km (0.115 R)
• M29: 44,214,548 km (0.052 R)
• M30: 45,721,448 km (0.12 R)
• M31: 52,647,979 km (0.119 R)
• M32: 57,043,613 km (0.078 R)
• M33: 61,265,115 km (0.108 R)
• M34: 71,457,817 km (0.078 R)
• M35: 78,278,881 km (0.095 R)
• M36: 79,008,320 km (0.071 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 365 - 18,568 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit