🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.41

Radius: 0.7

Gravity: 0.84 G

Time & Orbit

Eccentricity (e): 0.006

Orbit Range: 0.59 AU - 0.59 AU

Year: 297 Days

Day: 46.3 Hours

Environment

Temp: -136 °C

Axial Tilt: 29.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 44,673,950 km

• M1: 91,404 km (0.055 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 556.1

Radius: 15

Gravity: 2.47 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 0.73 AU - 1.03 AU

Year: 542 Days

Day: 9.9 Hours

Environment

Temp: -150 °C

Axial Tilt: 24.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 44,673,950 km

• M1: 186,549 km (0.1 R)
• M2: 799,301 km (0.064 R)
• M3: 1,325,288 km (0.086 R)
• M4: 1,830,779 km (0.115 R)
• M5: 2,674,062 km (0.072 R)
• M6: 3,332,442 km (0.107 R)
• M7: 3,909,142 km (0.049 R)
• M8: 4,641,424 km (0.081 R)
• M9: 5,875,307 km (0.105 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 938.1

Radius: 13

Gravity: 5.55 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 1.02 AU - 1.64 AU

Year: 1006 Days

Day: 9.1 Hours

Environment

Temp: -173 °C

Axial Tilt: 8.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 44,673,950 km

• M1: 167,699 km (0.085 R)
• M2: 704,756 km (0.045 R)
• M3: 1,122,283 km (0.056 R)
• M4: 2,102,598 km (0.115 R)
• M5: 4,089,407 km (0.037 R)
• M6: 4,743,898 km (0.074 R)
• M7: 5,304,740 km (0.107 R)
• M8: 5,780,761 km (0.118 R)
• M9: 6,536,978 km (0.072 R)
• M10: 7,134,322 km (0.034 R)
• M11: 7,741,690 km (0.118 R)
• M12: 8,605,169 km (0.033 R)
• M13: 10,364,440 km (0.076 R)
• M14: 10,782,416 km (0.05 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 314.6

Radius: 8.2

Gravity: 4.68 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 1.37 AU - 1.45 AU

Year: 1098 Days

Day: 5.2 Hours

Environment

Temp: -171 °C

Axial Tilt: 16.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 44,673,950 km

• M1: 102,026 km (0.039 R)
• M2: 675,285 km (0.033 R)
• M3: 1,377,946 km (0.12 R)
• M4: 2,382,047 km (0.064 R)
• M5: 2,702,037 km (0.079 R)
• M6: 3,295,342 km (0.112 R)
• M7: 4,655,037 km (0.119 R)
• M8: 5,248,192 km (0.113 R)
• M9: 5,831,923 km (0.103 R)
• M10: 6,458,439 km (0.108 R)
• M11: 6,798,924 km (0.099 R)
• M12: 7,377,718 km (0.12 R)
• M13: 8,232,820 km (0.107 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 417.6

Radius: 14.3

Gravity: 2.04 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 1.96 AU - 3.26 AU

Year: 2766 Days

Day: 6.6 Hours

Environment

Temp: -188 °C

Axial Tilt: 32.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 44,673,950 km

• M1: 181,163 km (0.111 R)
• M2: 686,505 km (0.107 R)
• M3: 1,479,523 km (0.074 R)
• M4: 2,174,555 km (0.118 R)
• M5: 2,662,992 km (0.108 R)
• M6: 3,225,180 km (0.108 R)
• M7: 3,996,956 km (0.085 R)
• M8: 4,550,318 km (0.076 R)
• M9: 5,290,977 km (0.065 R)
• M10: 5,960,129 km (0.063 R)
• M11: 6,419,843 km (0.094 R)
• M12: 10,444,624 km (0.097 R)
• M13: 11,115,571 km (0.104 R)
• M14: 11,934,619 km (0.046 R)
• M15: 12,877,385 km (0.077 R)
• M16: 13,475,327 km (0.084 R)
• M17: 15,908,387 km (0.074 R)
• M18: 16,797,597 km (0.059 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 792

Radius: 11.4

Gravity: 6.09 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 3.78 AU - 5.56 AU

Year: 6620 Days

Day: 13.6 Hours

Environment

Temp: -225 °C

Axial Tilt: 49.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 44,673,950 km

• M1: 142,866 km (0.047 R)
• M2: 1,109,268 km (0.109 R)
• M3: 1,535,024 km (0.107 R)
• M4: 2,652,370 km (0.115 R)
• M5: 3,496,850 km (0.062 R)
• M6: 4,621,078 km (0.083 R)
• M7: 5,557,262 km (0.102 R)
• M8: 7,304,565 km (0.048 R)
• M9: 7,764,129 km (0.048 R)
• M10: 8,572,856 km (0.087 R)
• M11: 9,041,247 km (0.093 R)
• M12: 12,060,431 km (0.109 R)
• M13: 13,256,915 km (0.118 R)
• M14: 18,140,088 km (0.099 R)
• M15: 19,781,925 km (0.073 R)
• M16: 21,057,396 km (0.046 R)
• M17: 21,676,432 km (0.074 R)
• M18: 23,441,089 km (0.088 R)
• M19: 24,274,199 km (0.064 R)
• M20: 25,126,758 km (0.114 R)
• M21: 25,999,362 km (0.096 R)
• M22: 29,788,975 km (0.088 R)
• M23: 34,462,113 km (0.059 R)
• M24: 36,085,849 km (0.025 R)
• M25: 37,308,662 km (0.053 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.91 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 702.6

Radius: 6.9

Gravity: 14.76 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 5.68 AU - 8.14 AU

Year: 11916 Days

Day: 19.5 Hours

Environment

Temp: -218 °C

Axial Tilt: 48.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 44,673,950 km

• M1: 135,386 km (0.074 R)
• M2: 357,090 km (0.095 R)
• M3: 711,936 km (0.079 R)
• M4: 1,177,485 km (0.1 R)
• M5: 3,403,651 km (0.108 R)
• M6: 8,299,690 km (0.082 R)
• M7: 13,329,619 km (0.101 R)
• M8: 16,843,374 km (0.036 R)
• M9: 17,828,925 km (0.116 R)
• M10: 20,929,490 km (0.051 R)
• M11: 24,658,516 km (0.1 R)
• M12: 28,489,568 km (0.117 R)
• M13: 28,807,912 km (0.096 R)
• M14: 30,879,544 km (0.118 R)
• M15: 31,440,685 km (0.086 R)
• M16: 31,780,721 km (0.113 R)
• M17: 33,165,250 km (0.081 R)
• M18: 33,399,819 km (0.114 R)
• M19: 43,578,608 km (0.083 R)
• M20: 45,141,905 km (0.098 R)
• M21: 46,448,493 km (0.088 R)
• M22: 47,037,310 km (0.083 R)
• M23: 50,209,982 km (0.089 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.45 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 152.7

Radius: 4.2

Gravity: 8.66 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 7.67 AU - 11.23 AU

Year: 19057 Days

Day: 23.7 Hours

Environment

Temp: -222 °C

Axial Tilt: 21.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 44,673,950 km

• M1: 53,406 km (0.082 R)
• M2: 308,172 km (0.099 R)
• M3: 527,332 km (0.048 R)
• M4: 757,863 km (0.066 R)
• M5: 1,021,305 km (0.1 R)
• M6: 1,318,256 km (0.096 R)
• M7: 1,583,942 km (0.069 R)
• M8: 1,775,278 km (0.114 R)
• M9: 3,241,487 km (0.11 R)
• M10: 4,895,142 km (0.104 R)
• M11: 5,730,945 km (0.053 R)
• M12: 5,867,528 km (0.114 R)
• M13: 6,399,049 km (0.063 R)
• M14: 7,804,820 km (0.099 R)
• M15: 9,933,448 km (0.116 R)
• M16: 10,381,045 km (0.096 R)
• M17: 12,025,874 km (0.057 R)
• M18: 12,249,971 km (0.065 R)
• M19: 13,412,795 km (0.066 R)
• M20: 18,577,363 km (0.088 R)
• M21: 20,107,749 km (0.118 R)
• M22: 22,642,535 km (0.101 R)
• M23: 29,435,775 km (0.103 R)
• M24: 30,253,776 km (0.071 R)
• M25: 31,615,266 km (0.081 R)
• M26: 32,473,210 km (0.104 R)
• M27: 34,572,517 km (0.055 R)
• M28: 40,777,238 km (0.115 R)
• M29: 41,410,336 km (0.1 R)
• M30: 42,825,981 km (0.077 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 339 - 12,852 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit