🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.36 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 435.3

Radius: 11.2

Gravity: 3.47 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 0.54 AU - 0.88 AU

Year: 406 Days

Day: 10.6 Hours

Environment

Temp: -159 °C

Axial Tilt: 12.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 52,409,940 km

• M1: 139,276 km (0.104 R)
• M2: 512,522 km (0.11 R)
• M3: 1,037,910 km (0.06 R)
• M4: 1,774,530 km (0.111 R)
• M5: 2,149,422 km (0.055 R)
• M6: 2,614,372 km (0.065 R)
• M7: 3,666,195 km (0.057 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 761.2

Radius: 13.5

Gravity: 4.18 G

Time & Orbit

Eccentricity (e): 0.007

Orbit Range: 0.83 AU - 0.85 AU

Year: 522 Days

Day: 7.2 Hours

Environment

Temp: -177 °C

Axial Tilt: 13.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 52,409,940 km

• M1: 169,943 km (0.113 R)
• M2: 884,123 km (0.096 R)
• M3: 1,502,112 km (0.1 R)
• M4: 1,950,457 km (0.034 R)
• M5: 2,736,444 km (0.098 R)
• M6: 3,269,761 km (0.115 R)
• M7: 4,079,983 km (0.081 R)
• M8: 4,518,005 km (0.065 R)
• M9: 6,007,402 km (0.106 R)
• M10: 6,895,415 km (0.059 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 949.1

Radius: 9.3

Gravity: 10.97 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 0.9 AU - 1.42 AU

Year: 847 Days

Day: 12 Hours

Environment

Temp: -184 °C

Axial Tilt: 32.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 52,409,940 km

• M1: 120,426 km (0.084 R)
• M2: 449,691 km (0.119 R)
• M3: 1,167,312 km (0.1 R)
• M4: 1,624,633 km (0.079 R)
• M5: 2,372,921 km (0.113 R)
• M6: 2,725,673 km (0.102 R)
• M7: 3,222,937 km (0.104 R)
• M8: 3,597,081 km (0.096 R)
• M9: 3,952,226 km (0.113 R)
• M10: 4,416,129 km (0.063 R)
• M11: 5,237,571 km (0.072 R)
• M12: 8,827,770 km (0.114 R)
• M13: 9,621,985 km (0.089 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.37 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 310.8

Radius: 14.5

Gravity: 1.48 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 1.19 AU - 1.55 AU

Year: 1088 Days

Day: 8.9 Hours

Environment

Temp: -179 °C

Axial Tilt: 14.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 52,409,940 km

• M1: 180,415 km (0.08 R)
• M2: 678,726 km (0.106 R)
• M3: 1,219,223 km (0.044 R)
• M4: 2,683,487 km (0.104 R)
• M5: 3,194,663 km (0.069 R)
• M6: 4,416,428 km (0.106 R)
• M7: 6,307,645 km (0.064 R)
• M8: 7,154,518 km (0.115 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 562.6

Radius: 14.6

Gravity: 2.64 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 1.75 AU - 1.77 AU

Year: 1584 Days

Day: 8.8 Hours

Environment

Temp: -195 °C

Axial Tilt: 2.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 52,409,940 km

• M1: 181,761 km (0.076 R)
• M2: 651,499 km (0.118 R)
• M3: 1,354,459 km (0.059 R)
• M4: 1,890,319 km (0.09 R)
• M5: 5,201,668 km (0.069 R)
• M6: 6,051,234 km (0.089 R)
• M7: 8,714,375 km (0.08 R)
• M8: 9,627,820 km (0.083 R)
• M9: 10,173,254 km (0.102 R)
• M10: 11,116,767 km (0.1 R)
• M11: 12,081,225 km (0.092 R)
• M12: 12,602,723 km (0.099 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 728.3

Radius: 9.7

Gravity: 7.74 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 2.25 AU - 3.09 AU

Year: 2959 Days

Day: 14.7 Hours

Environment

Temp: -215 °C

Axial Tilt: 18.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 52,409,940 km

• M1: 120,576 km (0.09 R)
• M2: 550,670 km (0.076 R)
• M3: 1,503,309 km (0.082 R)
• M4: 2,089,284 km (0.083 R)
• M5: 2,524,763 km (0.105 R)
• M6: 3,020,231 km (0.119 R)
• M7: 3,734,561 km (0.078 R)
• M8: 6,618,210 km (0.067 R)
• M9: 7,373,081 km (0.038 R)
• M10: 9,492,284 km (0.097 R)
• M11: 10,934,707 km (0.105 R)
• M12: 12,743,195 km (0.094 R)
• M13: 13,861,739 km (0.093 R)
• M14: 14,346,735 km (0.099 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 98

Radius: 14.3

Gravity: 0.48 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 2.77 AU - 3.45 AU

Year: 3720 Days

Day: 5.7 Hours

Environment

Temp: -222 °C

Axial Tilt: 13.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 52,409,940 km

• M1: 184,454 km (0.07 R)
• M2: 930,648 km (0.11 R)
• M3: 1,531,284 km (0.091 R)
• M4: 3,609,647 km (0.094 R)
• M5: 4,397,429 km (0.106 R)
• M6: 5,381,335 km (0.109 R)
• M7: 6,824,505 km (0.074 R)
• M8: 7,332,988 km (0.078 R)
• M9: 9,163,318 km (0.077 R)
• M10: 10,365,487 km (0.091 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 153.6

Radius: 10.6

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.006

Orbit Range: 4.2 AU - 4.26 AU

Year: 5901 Days

Day: 12.9 Hours

Environment

Temp: -210 °C

Axial Tilt: 23.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 52,409,940 km

• M1: 136,284 km (0.098 R)
• M2: 541,395 km (0.117 R)
• M3: 2,061,758 km (0.119 R)
• M4: 3,162,200 km (0.106 R)
• M5: 5,467,653 km (0.12 R)
• M6: 6,560,315 km (0.085 R)
• M7: 7,888,595 km (0.113 R)
• M8: 15,521,228 km (0.096 R)
• M9: 19,114,120 km (0.12 R)
• M10: 20,303,872 km (0.083 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.99 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 381.6

Radius: 6.4

Gravity: 9.32 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 7.43 AU - 8.55 AU

Year: 15318 Days

Day: 22.1 Hours

Environment

Temp: -229 °C

Axial Tilt: 58.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 52,409,940 km

• M1: 79,586 km (0.1 R)
• M2: 286,031 km (0.061 R)
• M3: 537,056 km (0.091 R)
• M4: 849,118 km (0.083 R)
• M5: 1,228,348 km (0.112 R)
• M6: 1,506,750 km (0.112 R)
• M7: 2,420,793 km (0.091 R)
• M8: 3,136,319 km (0.115 R)
• M9: 3,874,136 km (0.118 R)
• M10: 6,739,384 km (0.112 R)
• M11: 8,738,610 km (0.108 R)
• M12: 9,976,233 km (0.071 R)
• M13: 10,237,132 km (0.077 R)
• M14: 11,667,886 km (0.085 R)
• M15: 13,478,619 km (0.087 R)
• M16: 16,389,195 km (0.108 R)
• M17: 19,611,832 km (0.099 R)
• M18: 25,880,432 km (0.11 R)
• M19: 26,274,323 km (0.081 R)
• M20: 27,582,257 km (0.107 R)
• M21: 46,378,182 km (0.042 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 236 - 14,938 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit