🌌 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: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.13

Radius: 0.44

Gravity: 0.67 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 0.48 AU - 0.68 AU

Year: 281 Days

Day: 20.7 Hours

Environment

Temp: -133 °C

Axial Tilt: 19.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 605.7

Radius: 8.9

Gravity: 7.65 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 0.56 AU - 0.82 AU

Year: 364 Days

Day: 10.6 Hours

Environment

Temp: -146 °C

Axial Tilt: 31.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 79,490,162 km

• M1: 117,434 km (0.061 R)
• M2: 466,745 km (0.073 R)
• M3: 822,339 km (0.087 R)
• M4: 1,329,925 km (0.091 R)
• M5: 1,611,767 km (0.072 R)
• M6: 3,137,666 km (0.086 R)
• M7: 4,218,959 km (0.034 R)
• M8: 4,808,973 km (0.063 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 399.2

Radius: 9.2

Gravity: 4.72 G

Time & Orbit

Eccentricity (e): 0.22

Orbit Range: 0.59 AU - 0.93 AU

Year: 421 Days

Day: 9.9 Hours

Environment

Temp: -148 °C

Axial Tilt: 29.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 79,490,162 km

• M1: 114,442 km (0.103 R)
• M2: 445,353 km (0.112 R)
• M3: 1,023,549 km (0.097 R)
• M4: 1,432,250 km (0.116 R)
• M5: 1,815,520 km (0.078 R)
• M6: 2,192,058 km (0.086 R)
• M7: 2,483,624 km (0.096 R)
• M8: 2,860,012 km (0.08 R)
• M9: 3,156,365 km (0.074 R)
• M10: 3,576,287 km (0.049 R)
• M11: 3,958,360 km (0.093 R)
• M12: 4,328,016 km (0.074 R)
• M13: 4,720,710 km (0.077 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 305.4

Radius: 11.7

Gravity: 2.23 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 0.7 AU - 1.04 AU

Year: 516 Days

Day: 5.7 Hours

Environment

Temp: -148 °C

Axial Tilt: 28.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 79,490,162 km

• M1: 145,559 km (0.12 R)
• M2: 542,891 km (0.062 R)
• M3: 1,002,007 km (0.052 R)
• M4: 1,480,570 km (0.113 R)
• M5: 1,858,155 km (0.071 R)
• M6: 2,804,212 km (0.115 R)
• M7: 3,204,985 km (0.035 R)
• M8: 3,574,043 km (0.108 R)
• M9: 4,034,355 km (0.088 R)
• M10: 4,658,478 km (0.107 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 354.6

Radius: 9.5

Gravity: 3.93 G

Time & Orbit

Eccentricity (e): 0.122

Orbit Range: 0.83 AU - 1.05 AU

Year: 579 Days

Day: 13.7 Hours

Environment

Temp: -147 °C

Axial Tilt: 28.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 79,490,162 km

• M1: 118,182 km (0.117 R)
• M2: 442,810 km (0.114 R)
• M3: 893,698 km (0.087 R)
• M4: 1,815,969 km (0.097 R)
• M5: 2,287,202 km (0.09 R)
• M6: 3,030,105 km (0.092 R)
• M7: 3,646,448 km (0.111 R)
• M8: 4,988,790 km (0.036 R)
• M9: 5,286,190 km (0.105 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.37 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 260

Radius: 13

Gravity: 1.54 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 1.87 AU - 2.87 AU

Year: 2320 Days

Day: 12.1 Hours

Environment

Temp: -192 °C

Axial Tilt: 2.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 79,490,162 km

• M1: 161,715 km (0.072 R)
• M2: 679,324 km (0.045 R)
• M3: 1,513,781 km (0.094 R)
• M4: 2,012,989 km (0.084 R)
• M5: 2,647,733 km (0.097 R)
• M6: 4,248,729 km (0.088 R)
• M7: 5,093,209 km (0.094 R)
• M8: 5,512,682 km (0.12 R)
• M9: 5,955,342 km (0.119 R)
• M10: 6,787,555 km (0.097 R)
• M11: 7,296,935 km (0.108 R)
• M12: 7,969,677 km (0.085 R)
• M13: 8,479,357 km (0.11 R)
• M14: 9,192,789 km (0.079 R)
• M15: 12,304,574 km (0.06 R)
• M16: 12,832,954 km (0.103 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.62 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 189.8

Radius: 4.8

Gravity: 8.24 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 8.28 AU - 10.96 AU

Year: 18971 Days

Day: 18.8 Hours

Environment

Temp: -222 °C

Axial Tilt: 49.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 79,490,162 km

• M1: 59,690 km (0.065 R)
• M2: 303,085 km (0.08 R)
• M3: 890,706 km (0.1 R)
• M4: 1,190,350 km (0.063 R)
• M5: 1,377,048 km (0.081 R)
• M6: 2,366,489 km (0.065 R)
• M7: 2,918,804 km (0.05 R)
• M8: 3,097,873 km (0.118 R)
• M9: 3,453,467 km (0.109 R)
• M10: 3,679,659 km (0.063 R)
• M11: 4,217,912 km (0.12 R)
• M12: 4,535,359 km (0.079 R)
• M13: 7,973,866 km (0.065 R)
• M14: 8,148,147 km (0.083 R)
• M15: 8,594,996 km (0.086 R)
• M16: 8,917,230 km (0.053 R)
• M17: 12,133,434 km (0.108 R)
• M18: 13,377,490 km (0.106 R)
• M19: 20,076,483 km (0.12 R)
• M20: 20,562,078 km (0.045 R)
• M21: 22,496,079 km (0.106 R)
• M22: 22,669,762 km (0.1 R)
• M23: 24,001,183 km (0.112 R)
• M24: 27,705,226 km (0.073 R)
• M25: 28,814,943 km (0.099 R)
• M26: 38,655,491 km (0.104 R)
• M27: 39,155,148 km (0.09 R)
• M28: 41,456,712 km (0.06 R)
• M29: 45,075,933 km (0.028 R)
• M30: 47,745,357 km (0.071 R)

Asteroid Belt

Center: 10.03 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 8 - Ice Giant

Semi-Major Axis: 10.43 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 681.1

Radius: 5.2

Gravity: 25.19 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 9.39 AU - 11.47 AU

Year: 21417 Days

Day: 19.2 Hours

Environment

Temp: -240 °C

Axial Tilt: 44.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (41)

Outer Limit: 79,490,162 km

• M1: 64,626 km (0.05 R)
• M2: 383,868 km (0.088 R)
• M3: 584,030 km (0.083 R)
• M4: 969,394 km (0.057 R)
• M5: 1,645,427 km (0.098 R)
• M6: 1,961,976 km (0.103 R)
• M7: 2,187,719 km (0.09 R)
• M8: 2,385,338 km (0.093 R)
• M9: 2,547,203 km (0.056 R)
• M10: 2,893,073 km (0.119 R)
• M11: 3,708,980 km (0.106 R)
• M12: 6,033,581 km (0.089 R)
• M13: 7,016,589 km (0.073 R)
• M14: 9,125,919 km (0.055 R)
• M15: 9,697,981 km (0.111 R)
• M16: 10,662,588 km (0.072 R)
• M17: 10,976,744 km (0.099 R)
• M18: 11,623,605 km (0.077 R)
• M19: 12,159,016 km (0.088 R)
• M20: 12,710,733 km (0.109 R)
• M21: 15,085,599 km (0.111 R)
• M22: 15,401,849 km (0.066 R)
• M23: 17,049,520 km (0.108 R)
• M24: 19,642,350 km (0.064 R)
• M25: 22,899,245 km (0.057 R)
• M26: 24,491,715 km (0.112 R)
• M27: 27,191,059 km (0.111 R)
• M28: 29,096,786 km (0.111 R)
• M29: 38,339,092 km (0.049 R)
• M30: 40,123,645 km (0.106 R)
• M31: 40,426,281 km (0.062 R)
• M32: 42,274,563 km (0.096 R)
• M33: 43,857,309 km (0.119 R)
• M34: 44,501,327 km (0.08 R)
• M35: 58,352,744 km (0.055 R)
• M36: 58,936,176 km (0.049 R)
• M37: 60,312,925 km (0.099 R)
• M38: 66,244,929 km (0.082 R)
• M39: 66,456,161 km (0.084 R)
• M40: 68,809,336 km (0.09 R)
• M41: 76,665,019 km (0.063 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: 277 - 12,152 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit