🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.2

Radius: 1.59

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 0.49 AU - 0.59 AU

Year: 252 Days

Day: 22.6 Hours

Environment

Temp: -124 °C

Axial Tilt: 14.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 546.2

Radius: 9

Gravity: 6.74 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 0.74 AU - 0.84 AU

Year: 446 Days

Day: 5.3 Hours

Environment

Temp: -142 °C

Axial Tilt: 3.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 33,900,440 km

• M1: 111,899 km (0.115 R)
• M2: 437,125 km (0.079 R)
• M3: 745,147 km (0.109 R)
• M4: 1,090,120 km (0.091 R)
• M5: 1,502,262 km (0.109 R)
• M6: 1,897,200 km (0.084 R)
• M7: 2,433,808 km (0.076 R)
• M8: 2,773,844 km (0.102 R)
• M9: 3,123,454 km (0.113 R)
• M10: 3,431,177 km (0.089 R)
• M11: 3,746,679 km (0.082 R)
• M12: 4,161,663 km (0.083 R)
• M13: 4,592,804 km (0.074 R)
• M14: 5,161,575 km (0.106 R)
• M15: 5,560,852 km (0.05 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 202

Radius: 9.5

Gravity: 2.24 G

Time & Orbit

Eccentricity (e): 0.087

Orbit Range: 2.7 AU - 3.22 AU

Year: 3238 Days

Day: 5.3 Hours

Environment

Temp: -200 °C

Axial Tilt: 8.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 33,900,440 km

• M1: 121,324 km (0.049 R)
• M2: 550,071 km (0.114 R)
• M3: 1,288,337 km (0.119 R)
• M4: 2,315,177 km (0.11 R)
• M5: 2,781,772 km (0.061 R)
• M6: 3,710,027 km (0.056 R)
• M7: 4,729,088 km (0.075 R)
• M8: 5,619,943 km (0.116 R)
• M9: 9,414,643 km (0.031 R)
• M10: 9,913,103 km (0.08 R)
• M11: 10,499,227 km (0.078 R)
• M12: 12,124,010 km (0.092 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 575.3

Radius: 14.5

Gravity: 2.74 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 3.15 AU - 4.25 AU

Year: 4525 Days

Day: 10.3 Hours

Environment

Temp: -199 °C

Axial Tilt: 33.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 33,900,440 km

• M1: 180,415 km (0.118 R)
• M2: 673,041 km (0.116 R)
• M3: 1,267,543 km (0.071 R)
• M4: 1,913,207 km (0.079 R)
• M5: 2,592,830 km (0.086 R)
• M6: 3,989,626 km (0.072 R)
• M7: 4,561,239 km (0.064 R)
• M8: 5,673,350 km (0.073 R)
• M9: 7,654,325 km (0.1 R)
• M10: 8,991,730 km (0.109 R)
• M11: 10,996,042 km (0.058 R)
• M12: 11,574,537 km (0.089 R)
• M13: 12,033,354 km (0.088 R)
• M14: 14,094,663 km (0.116 R)
• M15: 16,612,395 km (0.096 R)
• M16: 17,614,551 km (0.117 R)
• M17: 20,329,453 km (0.098 R)
• M18: 20,998,754 km (0.087 R)
• M19: 21,613,751 km (0.092 R)
• M20: 22,170,404 km (0.12 R)
• M21: 25,482,202 km (0.1 R)
• M22: 26,182,171 km (0.091 R)

Planet 5 - Ice Giant

Semi-Major Axis: 8.43 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 188.9

Radius: 5.5

Gravity: 6.24 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 7.54 AU - 9.32 AU

Year: 15562 Days

Day: 21 Hours

Environment

Temp: -236 °C

Axial Tilt: 4.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 33,900,440 km

• M1: 68,516 km (0.103 R)
• M2: 277,504 km (0.117 R)
• M3: 466,895 km (0.096 R)
• M4: 714,180 km (0.093 R)
• M5: 1,892,712 km (0.096 R)
• M6: 3,348,000 km (0.041 R)
• M7: 3,982,744 km (0.056 R)
• M8: 10,880,403 km (0.07 R)
• M9: 12,592,999 km (0.045 R)
• M10: 12,876,038 km (0.111 R)
• M11: 14,976,692 km (0.075 R)
• M12: 21,970,841 km (0.119 R)
• M13: 31,590,283 km (0.078 R)
• M14: 37,892,393 km (0.115 R)
• M15: 38,245,444 km (0.076 R)
• M16: 41,898,324 km (0.041 R)

Planet 6 - Ice Giant

Semi-Major Axis: 9 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 46.5

Radius: 7.1

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 7.54 AU - 10.46 AU

Year: 17167 Days

Day: 17.6 Hours

Environment

Temp: -232 °C

Axial Tilt: 46.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 33,900,440 km

• M1: 122,521 km (0.07 R)
• M2: 358,287 km (0.113 R)
• M3: 701,764 km (0.036 R)
• M4: 1,012,628 km (0.044 R)
• M5: 3,730,223 km (0.119 R)
• M6: 4,637,085 km (0.027 R)
• M7: 7,483,035 km (0.099 R)
• M8: 7,941,403 km (0.112 R)
• M9: 11,737,000 km (0.08 R)
• M10: 15,723,335 km (0.118 R)
• M11: 17,677,980 km (0.09 R)
• M12: 18,364,036 km (0.036 R)
• M13: 21,991,485 km (0.08 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.89 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 71.5

Radius: 7.8

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.065

Orbit Range: 9.25 AU - 10.53 AU

Year: 19776 Days

Day: 22.8 Hours

Environment

Temp: -222 °C

Axial Tilt: 33 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 33,900,440 km

• M1: 122,072 km (0.071 R)
• M2: 439,668 km (0.112 R)
• M3: 3,076,630 km (0.077 R)
• M4: 8,712,730 km (0.117 R)
• M5: 13,722,164 km (0.059 R)
• M6: 14,062,200 km (0.118 R)
• M7: 16,222,692 km (0.093 R)

Planet 8 - Ice Giant

Semi-Major Axis: 11.25 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 42.1

Radius: 7.2

Gravity: 0.81 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 9.25 AU - 13.25 AU

Year: 23992 Days

Day: 18.6 Hours

Environment

Temp: -240 °C

Axial Tilt: 45.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 33,900,440 km

• M1: 94,247 km (0.113 R)
• M2: 449,542 km (0.105 R)
• M3: 740,360 km (0.101 R)
• M4: 1,176,886 km (0.119 R)
• M5: 1,430,156 km (0.077 R)
• M6: 2,684,983 km (0.104 R)
• M7: 4,982,058 km (0.079 R)
• M8: 6,823,907 km (0.088 R)
• M9: 19,915,516 km (0.1 R)
• M10: 28,622,860 km (0.042 R)
• M11: 28,895,427 km (0.087 R)
• M12: 29,723,751 km (0.11 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: 452 - 15,885 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit