🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.35

Radius: 0.66

Gravity: 0.8 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 0.54 AU - 0.6 AU

Year: 278 Days

Day: 12.4 Hours

Environment

Temp: -128 °C

Axial Tilt: 49.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.71

Radius: 1.49

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 0.56 AU - 0.7 AU

Year: 323 Days

Day: 41.6 Hours

Environment

Temp: -139 °C

Axial Tilt: 2.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 82,136,403 km

• M1: 81,082 km (0.097 R)
• M2: 343,178 km (0.112 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 816.9

Radius: 13.3

Gravity: 4.62 G

Time & Orbit

Eccentricity (e): 0.186

Orbit Range: 0.61 AU - 0.89 AU

Year: 419 Days

Day: 12.3 Hours

Environment

Temp: -141 °C

Axial Tilt: 28 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 82,136,403 km

• M1: 165,455 km (0.052 R)
• M2: 601,383 km (0.025 R)
• M3: 1,064,389 km (0.12 R)
• M4: 1,500,616 km (0.041 R)
• M5: 2,084,347 km (0.116 R)
• M6: 3,020,531 km (0.114 R)
• M7: 4,123,965 km (0.062 R)
• M8: 4,769,031 km (0.114 R)
• M9: 5,300,402 km (0.075 R)
• M10: 5,819,058 km (0.113 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 621.3

Radius: 9.8

Gravity: 6.47 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 2.76 AU - 3.5 AU

Year: 3575 Days

Day: 8.6 Hours

Environment

Temp: -203 °C

Axial Tilt: 9.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 82,136,403 km

• M1: 122,221 km (0.063 R)
• M2: 431,440 km (0.12 R)
• M3: 949,946 km (0.079 R)
• M4: 1,271,283 km (0.085 R)
• M5: 1,643,781 km (0.112 R)
• M6: 2,062,356 km (0.078 R)
• M7: 2,505,316 km (0.044 R)
• M8: 3,783,181 km (0.115 R)
• M9: 4,427,947 km (0.115 R)
• M10: 5,219,919 km (0.07 R)
• M11: 6,746,116 km (0.104 R)
• M12: 7,893,831 km (0.094 R)
• M13: 8,373,741 km (0.12 R)
• M14: 9,316,656 km (0.11 R)
• M15: 10,009,893 km (0.073 R)
• M16: 14,654,757 km (0.04 R)
• M17: 15,118,510 km (0.107 R)
• M18: 16,075,488 km (0.086 R)
• M19: 20,565,219 km (0.086 R)
• M20: 21,540,597 km (0.074 R)
• M21: 21,939,276 km (0.026 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 796.2

Radius: 12.8

Gravity: 4.86 G

Time & Orbit

Eccentricity (e): 0.16

Orbit Range: 3.35 AU - 4.63 AU

Year: 5146 Days

Day: 7.1 Hours

Environment

Temp: -215 °C

Axial Tilt: 34.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 82,136,403 km

• M1: 159,172 km (0.073 R)
• M2: 738,415 km (0.103 R)
• M3: 1,244,355 km (0.103 R)
• M4: 1,751,043 km (0.1 R)
• M5: 2,684,085 km (0.095 R)
• M6: 3,232,960 km (0.093 R)
• M7: 3,698,508 km (0.086 R)
• M8: 4,184,701 km (0.114 R)
• M9: 5,008,238 km (0.055 R)
• M10: 6,807,002 km (0.096 R)
• M11: 7,468,973 km (0.12 R)
• M12: 9,375,897 km (0.088 R)
• M13: 10,019,617 km (0.068 R)
• M14: 13,103,726 km (0.033 R)
• M15: 19,936,908 km (0.114 R)
• M16: 21,002,494 km (0.102 R)
• M17: 22,482,017 km (0.119 R)
• M18: 23,324,702 km (0.117 R)
• M19: 24,829,955 km (0.116 R)
• M20: 26,398,938 km (0.1 R)
• M21: 27,857,966 km (0.054 R)
• M22: 29,642,519 km (0.091 R)
• M23: 30,100,288 km (0.065 R)
• M24: 31,883,196 km (0.091 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 497.8

Radius: 11.7

Gravity: 3.64 G

Time & Orbit

Eccentricity (e): 0.065

Orbit Range: 4.2 AU - 4.78 AU

Year: 6143 Days

Day: 10.3 Hours

Environment

Temp: -210 °C

Axial Tilt: 31.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 82,136,403 km

• M1: 146,008 km (0.044 R)
• M2: 783,145 km (0.08 R)
• M3: 1,331,870 km (0.075 R)
• M4: 1,846,337 km (0.071 R)
• M5: 2,250,700 km (0.044 R)
• M6: 2,644,442 km (0.082 R)
• M7: 3,302,373 km (0.087 R)
• M8: 4,113,792 km (0.117 R)
• M9: 5,618,148 km (0.08 R)
• M10: 6,256,033 km (0.114 R)
• M11: 6,740,730 km (0.116 R)
• M12: 8,976,022 km (0.111 R)
• M13: 10,195,843 km (0.12 R)
• M14: 11,763,180 km (0.072 R)
• M15: 14,911,467 km (0.071 R)
• M16: 16,375,432 km (0.051 R)
• M17: 17,613,803 km (0.097 R)
• M18: 20,206,783 km (0.115 R)
• M19: 21,196,672 km (0.076 R)
• M20: 23,273,240 km (0.064 R)
• M21: 23,735,198 km (0.057 R)
• M22: 25,890,604 km (0.098 R)
• M23: 26,721,022 km (0.108 R)
• M24: 29,677,674 km (0.083 R)
• M25: 30,221,313 km (0.119 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.88 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 612.3

Radius: 4.4

Gravity: 31.63 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 6.63 AU - 7.13 AU

Year: 11652 Days

Day: 17.8 Hours

Environment

Temp: -233 °C

Axial Tilt: 49.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 82,136,403 km

• M1: 56,847 km (0.109 R)
• M2: 256,112 km (0.059 R)
• M3: 562,338 km (0.11 R)
• M4: 1,406,370 km (0.115 R)
• M5: 1,759,869 km (0.1 R)
• M6: 2,009,399 km (0.085 R)
• M7: 2,457,444 km (0.12 R)
• M8: 2,705,178 km (0.083 R)
• M9: 4,201,007 km (0.074 R)
• M10: 4,646,959 km (0.079 R)
• M11: 4,897,385 km (0.059 R)
• M12: 8,007,824 km (0.051 R)
• M13: 9,613,010 km (0.09 R)
• M14: 11,590,394 km (0.093 R)
• M15: 13,131,851 km (0.077 R)
• M16: 14,406,873 km (0.111 R)
• M17: 17,052,512 km (0.087 R)
• M18: 17,497,865 km (0.102 R)
• M19: 24,384,902 km (0.077 R)
• M20: 34,622,782 km (0.109 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.52 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 710.1

Radius: 6.3

Gravity: 17.89 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 8.03 AU - 13.01 AU

Year: 22031 Days

Day: 20.1 Hours

Environment

Temp: -237 °C

Axial Tilt: 19 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 82,136,403 km

• M1: 78,389 km (0.092 R)
• M2: 503,247 km (0.066 R)
• M3: 754,721 km (0.11 R)
• M4: 988,393 km (0.067 R)
• M5: 1,998,029 km (0.101 R)
• M6: 2,499,332 km (0.109 R)
• M7: 3,054,190 km (0.119 R)
• M8: 3,303,570 km (0.066 R)
• M9: 3,971,075 km (0.109 R)
• M10: 5,610,668 km (0.118 R)
• M11: 6,511,995 km (0.112 R)
• M12: 8,065,569 km (0.075 R)
• M13: 8,817,298 km (0.105 R)
• M14: 9,096,747 km (0.09 R)
• M15: 10,030,986 km (0.083 R)
• M16: 15,435,508 km (0.05 R)
• M17: 15,678,306 km (0.117 R)
• M18: 17,363,526 km (0.059 R)
• M19: 19,072,831 km (0.101 R)
• M20: 26,801,356 km (0.112 R)
• M21: 27,863,950 km (0.066 R)
• M22: 29,200,308 km (0.101 R)
• M23: 31,869,283 km (0.091 R)
• M24: 32,527,963 km (0.1 R)
• M25: 33,465,193 km (0.046 R)
• M26: 34,696,533 km (0.11 R)
• M27: 41,153,776 km (0.051 R)
• M28: 48,023,011 km (0.093 R)
• M29: 51,366,822 km (0.039 R)
• M30: 52,271,890 km (0.101 R)
• M31: 66,295,493 km (0.109 R)
• M32: 74,970,524 km (0.094 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 364 - 17,175 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit