🌌 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 - Gas Giant

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 437.1

Radius: 12.1

Gravity: 2.99 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 0.47 AU - 0.65 AU

Year: 289 Days

Day: 12.6 Hours

Environment

Temp: -143 °C

Axial Tilt: 15.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 68,178,800 km

• M1: 151,243 km (0.104 R)
• M2: 546,032 km (0.089 R)
• M3: 970,142 km (0.105 R)
• M4: 1,410,858 km (0.107 R)
• M5: 1,944,922 km (0.075 R)
• M6: 2,326,696 km (0.119 R)
• M7: 3,396,171 km (0.102 R)
• M8: 3,888,647 km (0.102 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 358.9

Radius: 11.8

Gravity: 2.58 G

Time & Orbit

Eccentricity (e): 0.16

Orbit Range: 0.52 AU - 0.72 AU

Year: 337 Days

Day: 12.7 Hours

Environment

Temp: -146 °C

Axial Tilt: 5.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 68,178,800 km

• M1: 146,756 km (0.096 R)
• M2: 573,708 km (0.106 R)
• M3: 965,056 km (0.105 R)
• M4: 1,352,066 km (0.12 R)
• M5: 2,091,229 km (0.059 R)
• M6: 2,583,256 km (0.079 R)
• M7: 3,241,337 km (0.117 R)
• M8: 3,870,546 km (0.09 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 606

Radius: 10

Gravity: 6.06 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 0.66 AU - 0.74 AU

Year: 404 Days

Day: 7.5 Hours

Environment

Temp: -162 °C

Axial Tilt: 48.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 68,178,800 km

• M1: 169,345 km (0.086 R)
• M2: 522,396 km (0.098 R)
• M3: 835,205 km (0.113 R)
• M4: 1,326,335 km (0.069 R)
• M5: 1,782,159 km (0.092 R)
• M6: 2,349,584 km (0.104 R)
• M7: 2,765,167 km (0.117 R)
• M8: 3,587,507 km (0.114 R)
• M9: 4,234,517 km (0.06 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 934.5

Radius: 13.6

Gravity: 5.05 G

Time & Orbit

Eccentricity (e): 0.038

Orbit Range: 0.67 AU - 0.73 AU

Year: 404 Days

Day: 9.7 Hours

Environment

Temp: -157 °C

Axial Tilt: 36.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 68,178,800 km

• M1: 169,195 km (0.092 R)
• M2: 650,152 km (0.096 R)
• M3: 1,149,959 km (0.12 R)
• M4: 1,642,435 km (0.082 R)
• M5: 2,153,312 km (0.114 R)
• M6: 2,638,009 km (0.046 R)
• M7: 3,071,543 km (0.116 R)
• M8: 3,503,881 km (0.101 R)
• M9: 4,222,849 km (0.115 R)
• M10: 4,867,167 km (0.083 R)
• M11: 5,593,315 km (0.05 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 266.3

Radius: 9.4

Gravity: 3.01 G

Time & Orbit

Eccentricity (e): 0.236

Orbit Range: 1.12 AU - 1.8 AU

Year: 1218 Days

Day: 5 Hours

Environment

Temp: -185 °C

Axial Tilt: 39.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 68,178,800 km

• M1: 123,867 km (0.072 R)
• M2: 1,302,100 km (0.108 R)
• M3: 2,127,581 km (0.055 R)
• M4: 2,587,594 km (0.107 R)
• M5: 2,950,519 km (0.05 R)
• M6: 3,267,965 km (0.12 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 899.4

Radius: 13.9

Gravity: 4.66 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 1.82 AU - 2.3 AU

Year: 2041 Days

Day: 7.2 Hours

Environment

Temp: -211 °C

Axial Tilt: 30 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 68,178,800 km

• M1: 172,935 km (0.112 R)
• M2: 679,174 km (0.083 R)
• M3: 1,565,991 km (0.119 R)
• M4: 2,031,988 km (0.114 R)
• M5: 3,187,482 km (0.103 R)
• M6: 3,689,083 km (0.079 R)
• M7: 4,509,478 km (0.082 R)
• M8: 5,641,635 km (0.082 R)
• M9: 6,301,362 km (0.12 R)
• M10: 7,125,945 km (0.06 R)
• M11: 7,897,870 km (0.084 R)
• M12: 8,790,820 km (0.028 R)
• M13: 9,469,096 km (0.104 R)
• M14: 10,036,671 km (0.112 R)
• M15: 11,318,425 km (0.113 R)
• M16: 13,092,506 km (0.095 R)
• M17: 15,967,778 km (0.094 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 894.6

Radius: 10.2

Gravity: 8.6 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 2.99 AU - 4.65 AU

Year: 5154 Days

Day: 10.9 Hours

Environment

Temp: -225 °C

Axial Tilt: 15.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 68,178,800 km

• M1: 126,859 km (0.106 R)
• M2: 535,112 km (0.09 R)
• M3: 1,097,600 km (0.074 R)
• M4: 1,422,377 km (0.072 R)
• M5: 2,388,928 km (0.113 R)
• M6: 2,738,987 km (0.117 R)
• M7: 4,345,968 km (0.09 R)
• M8: 4,871,655 km (0.118 R)
• M9: 5,468,849 km (0.051 R)
• M10: 6,438,992 km (0.095 R)
• M11: 7,742,438 km (0.048 R)
• M12: 8,200,806 km (0.119 R)
• M13: 8,758,357 km (0.12 R)
• M14: 10,308,490 km (0.088 R)
• M15: 11,005,616 km (0.056 R)
• M16: 11,684,342 km (0.089 R)
• M17: 13,340,540 km (0.057 R)
• M18: 16,233,164 km (0.079 R)
• M19: 17,499,211 km (0.102 R)
• M20: 21,467,444 km (0.097 R)
• M21: 23,779,629 km (0.116 R)
• M22: 24,749,322 km (0.113 R)
• M23: 26,509,341 km (0.089 R)
• M24: 27,376,261 km (0.076 R)
• M25: 29,257,903 km (0.049 R)
• M26: 31,320,109 km (0.07 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 20.8

Radius: 9

Gravity: 0.26 G

Time & Orbit

Eccentricity (e): 0.111

Orbit Range: 3.78 AU - 4.72 AU

Year: 6048 Days

Day: 12.3 Hours

Environment

Temp: -231 °C

Axial Tilt: 28.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 68,178,800 km

• M1: 112,049 km (0.095 R)
• M2: 635,043 km (0.115 R)
• M3: 1,297,014 km (0.083 R)
• M4: 1,591,273 km (0.054 R)
• M5: 2,219,733 km (0.115 R)
• M6: 3,112,982 km (0.119 R)
• M7: 3,468,875 km (0.076 R)
• M8: 5,114,602 km (0.105 R)
• M9: 5,409,160 km (0.049 R)
• M10: 7,152,873 km (0.089 R)
• M11: 7,647,892 km (0.117 R)
• M12: 8,957,771 km (0.077 R)
• M13: 9,358,095 km (0.096 R)
• M14: 9,800,157 km (0.119 R)
• M15: 10,662,588 km (0.064 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.74 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 619.7

Radius: 5

Gravity: 24.79 G

Time & Orbit

Eccentricity (e): 0.025

Orbit Range: 8.52 AU - 8.96 AU

Year: 17835 Days

Day: 23.7 Hours

Environment

Temp: -225 °C

Axial Tilt: 11.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 68,178,800 km

• M1: 71,807 km (0.064 R)
• M2: 241,152 km (0.062 R)
• M3: 420,968 km (0.094 R)
• M4: 1,015,620 km (0.091 R)
• M5: 1,231,938 km (0.096 R)
• M6: 1,432,998 km (0.116 R)
• M7: 2,211,505 km (0.115 R)
• M8: 3,033,097 km (0.11 R)
• M9: 3,712,122 km (0.106 R)
• M10: 4,292,113 km (0.067 R)
• M11: 5,328,227 km (0.119 R)
• M12: 6,269,348 km (0.093 R)
• M13: 8,125,259 km (0.092 R)
• M14: 10,203,173 km (0.119 R)
• M15: 10,967,917 km (0.109 R)
• M16: 14,849,085 km (0.075 R)
• M17: 15,906,742 km (0.049 R)
• M18: 17,503,250 km (0.091 R)
• M19: 20,733,218 km (0.118 R)
• M20: 22,536,470 km (0.115 R)
• M21: 23,727,868 km (0.115 R)
• M22: 24,752,164 km (0.056 R)
• M23: 26,343,437 km (0.065 R)
• M24: 28,569,603 km (0.077 R)
• M25: 29,494,118 km (0.069 R)
• M26: 30,081,888 km (0.03 R)
• M27: 30,438,380 km (0.108 R)
• M28: 38,869,716 km (0.041 R)
• M29: 42,042,088 km (0.097 R)
• M30: 50,384,264 km (0.082 R)
• M31: 53,973,266 km (0.074 R)
• M32: 55,562,295 km (0.083 R)
• M33: 58,279,441 km (0.1 R)
• M34: 58,463,596 km (0.045 R)
• M35: 59,951,496 km (0.064 R)
• M36: 61,655,416 km (0.107 R)
• M37: 64,369,421 km (0.115 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 313 - 10,650 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit