🌌 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: 0.99

Radius: 1

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 0.53 AU - 0.63 AU

Year: 290 Days

Day: 33.2 Hours

Environment

Temp: -124 °C

Axial Tilt: 11.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.81

Radius: 1.27

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 0.54 AU - 0.72 AU

Year: 328 Days

Day: 21.5 Hours

Environment

Temp: -137 °C

Axial Tilt: 41.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 46,827,133 km

• M1: 359,633 km (0.095 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 880.2

Radius: 13.7

Gravity: 4.69 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 0.68 AU - 1 AU

Year: 505 Days

Day: 8.2 Hours

Environment

Temp: -141 °C

Axial Tilt: 6.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 46,827,133 km

• M1: 170,392 km (0.096 R)
• M2: 692,638 km (0.108 R)
• M3: 1,193,342 km (0.101 R)
• M4: 1,619,547 km (0.119 R)
• M5: 2,087,788 km (0.103 R)
• M6: 2,753,498 km (0.114 R)
• M7: 3,306,263 km (0.062 R)
• M8: 3,836,437 km (0.096 R)
• M9: 4,363,471 km (0.086 R)
• M10: 4,971,287 km (0.085 R)
• M11: 5,979,576 km (0.09 R)
• M12: 6,811,939 km (0.088 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 416.7

Radius: 8.1

Gravity: 6.35 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 1.05 AU - 1.05 AU

Year: 706 Days

Day: 12.4 Hours

Environment

Temp: -161 °C

Axial Tilt: 10 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 46,827,133 km

• M1: 103,073 km (0.118 R)
• M2: 414,386 km (0.082 R)
• M3: 761,752 km (0.082 R)
• M4: 1,101,190 km (0.115 R)
• M5: 1,400,236 km (0.07 R)
• M6: 1,652,308 km (0.115 R)
• M7: 2,184,428 km (0.034 R)
• M8: 2,727,319 km (0.081 R)
• M9: 3,137,217 km (0.111 R)
• M10: 3,666,644 km (0.033 R)
• M11: 4,023,435 km (0.067 R)
• M12: 4,935,982 km (0.075 R)
• M13: 5,268,987 km (0.097 R)
• M14: 5,546,042 km (0.119 R)
• M15: 5,961,475 km (0.085 R)
• M16: 6,301,062 km (0.097 R)
• M17: 6,653,365 km (0.07 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 977.8

Radius: 8.9

Gravity: 12.34 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 0.97 AU - 1.45 AU

Year: 873 Days

Day: 8.5 Hours

Environment

Temp: -171 °C

Axial Tilt: 32 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 46,827,133 km

• M1: 110,852 km (0.041 R)
• M2: 391,647 km (0.109 R)
• M3: 710,590 km (0.117 R)
• M4: 1,030,729 km (0.105 R)
• M5: 1,775,128 km (0.115 R)
• M6: 2,496,639 km (0.108 R)
• M7: 3,064,512 km (0.101 R)
• M8: 3,936,818 km (0.072 R)
• M9: 5,864,087 km (0.115 R)
• M10: 6,318,565 km (0.062 R)
• M11: 7,927,790 km (0.119 R)
• M12: 9,645,024 km (0.066 R)
• M13: 10,279,019 km (0.059 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.41 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 31.2

Radius: 3.7

Gravity: 2.28 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 5.13 AU - 7.69 AU

Year: 10646 Days

Day: 22.9 Hours

Environment

Temp: -213 °C

Axial Tilt: 25.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 46,827,133 km

• M1: 46,076 km (0.086 R)
• M2: 274,063 km (0.11 R)
• M3: 498,460 km (0.05 R)
• M4: 1,211,144 km (0.106 R)
• M5: 1,614,759 km (0.065 R)
• M6: 2,366,040 km (0.086 R)
• M7: 4,027,324 km (0.101 R)
• M8: 4,980,113 km (0.037 R)
• M9: 5,717,930 km (0.074 R)
• M10: 6,257,380 km (0.095 R)
• M11: 12,638,028 km (0.081 R)
• M12: 12,894,140 km (0.048 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.17 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 780.1

Radius: 7.6

Gravity: 13.51 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 6.75 AU - 7.59 AU

Year: 12595 Days

Day: 20.4 Hours

Environment

Temp: -219 °C

Axial Tilt: 9.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 46,827,133 km

• M1: 108,458 km (0.106 R)
• M2: 351,555 km (0.12 R)
• M3: 732,132 km (0.115 R)
• M4: 1,060,948 km (0.057 R)
• M5: 1,346,680 km (0.11 R)
• M6: 1,881,792 km (0.109 R)
• M7: 2,285,706 km (0.102 R)
• M8: 2,882,302 km (0.115 R)
• M9: 3,242,384 km (0.071 R)
• M10: 4,082,077 km (0.095 R)
• M11: 4,505,738 km (0.07 R)
• M12: 4,793,415 km (0.1 R)
• M13: 5,620,841 km (0.092 R)
• M14: 6,184,376 km (0.107 R)
• M15: 7,780,436 km (0.095 R)
• M16: 11,290,750 km (0.083 R)
• M17: 12,873,495 km (0.091 R)
• M18: 13,258,710 km (0.057 R)
• M19: 16,026,719 km (0.093 R)
• M20: 17,003,444 km (0.078 R)
• M21: 17,939,777 km (0.067 R)
• M22: 20,517,049 km (0.061 R)
• M23: 25,578,543 km (0.113 R)
• M24: 25,881,928 km (0.116 R)
• M25: 28,830,352 km (0.108 R)
• M26: 30,725,607 km (0.098 R)
• M27: 32,583,912 km (0.099 R)
• M28: 37,036,543 km (0.098 R)
• M29: 39,812,781 km (0.098 R)
• M30: 40,084,151 km (0.114 R)
• M31: 43,151,805 km (0.098 R)
• M32: 49,436,262 km (0.094 R)
• M33: 58,377,427 km (0.092 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.9 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 114.6

Radius: 5

Gravity: 4.58 G

Time & Orbit

Eccentricity (e): 0.038

Orbit Range: 10.49 AU - 11.31 AU

Year: 23607 Days

Day: 23.4 Hours

Environment

Temp: -225 °C

Axial Tilt: 47.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 46,827,133 km

• M1: 64,327 km (0.089 R)
• M2: 436,227 km (0.117 R)
• M3: 962,363 km (0.073 R)
• M4: 2,225,867 km (0.033 R)
• M5: 3,526,919 km (0.108 R)
• M6: 5,137,640 km (0.067 R)
• M7: 6,713,803 km (0.109 R)
• M8: 8,860,233 km (0.104 R)
• M9: 9,912,953 km (0.061 R)
• M10: 11,424,640 km (0.067 R)
• M11: 12,494,564 km (0.119 R)
• M12: 13,939,230 km (0.096 R)
• M13: 14,637,254 km (0.062 R)
• M14: 15,291,745 km (0.076 R)
• M15: 17,156,033 km (0.11 R)
• M16: 20,998,754 km (0.09 R)
• M17: 24,005,821 km (0.083 R)
• M18: 26,705,314 km (0.05 R)
• M19: 29,086,912 km (0.115 R)
• M20: 31,391,019 km (0.073 R)
• M21: 45,026,865 km (0.105 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 289 - 15,156 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit