🌌 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: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.45

Radius: 0.73

Gravity: 0.84 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 0.57 AU - 0.71 AU

Year: 331 Days

Day: 27.4 Hours

Environment

Temp: -134 °C

Axial Tilt: 56.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.26

Radius: 1.1

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.104

Orbit Range: 0.6 AU - 0.74 AU

Year: 354 Days

Day: 23.6 Hours

Environment

Temp: -130 °C

Axial Tilt: 32.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 47,536,505 km

• M1: 61,934 km (0.035 R)
• M2: 258,206 km (0.087 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 763.9

Radius: 10.3

Gravity: 7.2 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 0.65 AU - 0.97 AU

Year: 471 Days

Day: 13.6 Hours

Environment

Temp: -143 °C

Axial Tilt: 20.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 47,536,505 km

• M1: 128,056 km (0.12 R)
• M2: 499,058 km (0.097 R)
• M3: 861,684 km (0.099 R)
• M4: 1,184,965 km (0.076 R)
• M5: 1,954,197 km (0.064 R)
• M6: 2,733,452 km (0.054 R)
• M7: 3,107,746 km (0.102 R)
• M8: 3,707,783 km (0.034 R)
• M9: 4,154,183 km (0.118 R)
• M10: 4,516,061 km (0.118 R)
• M11: 5,539,759 km (0.107 R)
• M12: 5,961,326 km (0.118 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 242.2

Radius: 14.8

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 0.83 AU - 0.99 AU

Year: 561 Days

Day: 13.5 Hours

Environment

Temp: -161 °C

Axial Tilt: 98.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 47,536,505 km

• M1: 187,895 km (0.073 R)
• M2: 670,946 km (0.061 R)
• M3: 1,206,208 km (0.077 R)
• M4: 1,990,549 km (0.089 R)
• M5: 2,966,975 km (0.044 R)
• M6: 3,576,586 km (0.083 R)
• M7: 4,413,137 km (0.085 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 583.6

Radius: 12.7

Gravity: 3.62 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 2.26 AU - 3.48 AU

Year: 3139 Days

Day: 10.4 Hours

Environment

Temp: -207 °C

Axial Tilt: 25.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 47,536,505 km

• M1: 158,125 km (0.108 R)
• M2: 600,635 km (0.038 R)
• M3: 1,074,262 km (0.112 R)
• M4: 1,481,169 km (0.084 R)
• M5: 2,225,568 km (0.06 R)
• M6: 2,699,942 km (0.084 R)
• M7: 4,458,017 km (0.101 R)
• M8: 5,985,112 km (0.112 R)
• M9: 6,507,807 km (0.102 R)
• M10: 7,488,421 km (0.088 R)
• M11: 8,876,090 km (0.085 R)
• M12: 9,742,561 km (0.093 R)
• M13: 17,350,062 km (0.103 R)
• M14: 19,288,102 km (0.04 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 476.1

Radius: 10.3

Gravity: 4.49 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 4.59 AU - 5.59 AU

Year: 7415 Days

Day: 14 Hours

Environment

Temp: -224 °C

Axial Tilt: 29.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 47,536,505 km

• M1: 133,890 km (0.048 R)
• M2: 730,187 km (0.091 R)
• M3: 2,788,355 km (0.03 R)
• M4: 4,280,593 km (0.044 R)
• M5: 6,785,311 km (0.12 R)
• M6: 12,271,214 km (0.074 R)
• M7: 12,955,325 km (0.049 R)
• M8: 16,764,087 km (0.062 R)
• M9: 18,888,227 km (0.105 R)
• M10: 19,305,605 km (0.055 R)
• M11: 20,231,018 km (0.114 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.49 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 813.5

Radius: 7.1

Gravity: 16.14 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 5.94 AU - 9.04 AU

Year: 13235 Days

Day: 16 Hours

Environment

Temp: -228 °C

Axial Tilt: 1.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 47,536,505 km

• M1: 88,263 km (0.079 R)
• M2: 352,901 km (0.119 R)
• M3: 704,008 km (0.076 R)
• M4: 1,908,570 km (0.095 R)
• M5: 2,185,774 km (0.086 R)
• M6: 2,511,150 km (0.12 R)
• M7: 2,845,052 km (0.092 R)
• M8: 3,284,720 km (0.059 R)
• M9: 4,028,222 km (0.096 R)
• M10: 4,680,169 km (0.056 R)
• M11: 8,482,947 km (0.088 R)
• M12: 9,236,472 km (0.074 R)
• M13: 10,876,364 km (0.033 R)
• M14: 11,108,689 km (0.068 R)
• M15: 13,889,115 km (0.042 R)
• M16: 14,934,206 km (0.108 R)
• M17: 15,366,544 km (0.027 R)
• M18: 18,879,999 km (0.067 R)
• M19: 19,641,752 km (0.104 R)
• M20: 21,226,292 km (0.1 R)
• M21: 24,448,930 km (0.05 R)
• M22: 30,558,357 km (0.074 R)
• M23: 35,916,953 km (0.085 R)
• M24: 37,612,495 km (0.103 R)
• M25: 38,144,615 km (0.051 R)
• M26: 40,185,429 km (0.12 R)
• M27: 42,441,215 km (0.078 R)
• M28: 43,454,142 km (0.117 R)
• M29: 48,290,791 km (0.111 R)
• M30: 49,713,168 km (0.12 R)
• M31: 59,016,659 km (0.104 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 319.1

Radius: 3.7

Gravity: 23.31 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 8.55 AU - 9.45 AU

Year: 17433 Days

Day: 24.7 Hours

Environment

Temp: -229 °C

Axial Tilt: 35.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 47,536,505 km

• M1: 50,863 km (0.116 R)
• M2: 184,305 km (0.107 R)
• M3: 658,530 km (0.104 R)
• M4: 1,013,226 km (0.114 R)
• M5: 1,841,400 km (0.109 R)
• M6: 1,961,078 km (0.086 R)
• M7: 2,814,385 km (0.065 R)
• M8: 4,030,167 km (0.102 R)
• M9: 4,849,065 km (0.105 R)
• M10: 6,687,773 km (0.091 R)
• M11: 6,971,710 km (0.058 R)
• M12: 8,188,838 km (0.094 R)
• M13: 12,132,687 km (0.057 R)
• M14: 12,738,857 km (0.119 R)
• M15: 13,750,438 km (0.093 R)
• M16: 14,011,486 km (0.105 R)
• M17: 14,746,311 km (0.119 R)
• M18: 15,932,024 km (0.078 R)
• M19: 18,889,424 km (0.107 R)
• M20: 44,711,961 km (0.113 R)
• M21: 48,672,565 km (0.072 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.64 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 178.9

Radius: 6.2

Gravity: 4.65 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 8.72 AU - 10.56 AU

Year: 19326 Days

Day: 18.2 Hours

Environment

Temp: -222 °C

Axial Tilt: 34.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 47,536,505 km

• M1: 83,326 km (0.075 R)
• M2: 294,259 km (0.053 R)
• M3: 596,297 km (0.098 R)
• M4: 1,320,500 km (0.061 R)
• M5: 1,560,455 km (0.111 R)
• M6: 2,743,475 km (0.078 R)
• M7: 3,183,293 km (0.049 R)
• M8: 3,593,341 km (0.099 R)
• M9: 4,065,023 km (0.072 R)
• M10: 6,009,496 km (0.114 R)
• M11: 6,944,632 km (0.052 R)
• M12: 7,223,034 km (0.103 R)
• M13: 9,052,616 km (0.036 R)
• M14: 12,344,218 km (0.04 R)
• M15: 14,351,073 km (0.086 R)
• M16: 20,259,591 km (0.025 R)
• M17: 21,241,402 km (0.092 R)
• M18: 22,083,338 km (0.095 R)
• M19: 22,685,769 km (0.045 R)
• M20: 24,742,590 km (0.109 R)
• M21: 27,906,136 km (0.114 R)
• M22: 28,307,059 km (0.109 R)
• M23: 37,153,828 km (0.116 R)
• M24: 38,374,696 km (0.076 R)
• M25: 39,370,420 km (0.045 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 175 - 12,724 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit