🌌 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: 4.51

Radius: 1.83

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 0.49 AU - 0.69 AU

Year: 288 Days

Day: 40.3 Hours

Environment

Temp: -133 °C

Axial Tilt: 24.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 61,716,511 km

• M1: 46,076 km (0.091 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.76

Radius: 1.87

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 0.54 AU - 0.7 AU

Year: 310 Days

Day: 33 Hours

Environment

Temp: -137 °C

Axial Tilt: 25.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 61,716,511 km

• M1: 235,916 km (0.114 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 748.5

Radius: 8.8

Gravity: 9.67 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 0.82 AU - 1.12 AU

Year: 607 Days

Day: 5.6 Hours

Environment

Temp: -167 °C

Axial Tilt: 49.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 61,716,511 km

• M1: 115,639 km (0.085 R)
• M2: 397,182 km (0.057 R)
• M3: 682,615 km (0.109 R)
• M4: 1,293,423 km (0.065 R)
• M5: 1,591,871 km (0.083 R)
• M6: 1,927,718 km (0.065 R)
• M7: 2,494,694 km (0.116 R)
• M8: 2,904,443 km (0.067 R)
• M9: 3,973,918 km (0.096 R)
• M10: 5,129,561 km (0.086 R)
• M11: 6,236,137 km (0.069 R)
• M12: 6,536,081 km (0.08 R)
• M13: 7,251,906 km (0.09 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 807.1

Radius: 12.3

Gravity: 5.33 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 0.97 AU - 1.37 AU

Year: 805 Days

Day: 12.3 Hours

Environment

Temp: -176 °C

Axial Tilt: 39.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 61,716,511 km

• M1: 153,039 km (0.077 R)
• M2: 564,732 km (0.081 R)
• M3: 1,068,428 km (0.066 R)
• M4: 1,705,865 km (0.045 R)
• M5: 2,148,076 km (0.073 R)
• M6: 2,690,518 km (0.055 R)
• M7: 3,136,768 km (0.1 R)
• M8: 4,440,663 km (0.114 R)
• M9: 5,159,780 km (0.096 R)
• M10: 5,557,411 km (0.083 R)
• M11: 6,479,084 km (0.073 R)
• M12: 7,056,532 km (0.078 R)
• M13: 7,692,323 km (0.05 R)
• M14: 8,187,641 km (0.117 R)
• M15: 9,051,569 km (0.062 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 306.5

Radius: 8.5

Gravity: 4.24 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 1.13 AU - 1.25 AU

Year: 825 Days

Day: 6.5 Hours

Environment

Temp: -168 °C

Axial Tilt: 14.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 61,716,511 km

• M1: 105,766 km (0.078 R)
• M2: 384,317 km (0.091 R)
• M3: 669,151 km (0.092 R)
• M4: 1,079,199 km (0.1 R)
• M5: 1,393,355 km (0.115 R)
• M6: 1,760,617 km (0.12 R)
• M7: 2,257,731 km (0.12 R)
• M8: 2,779,229 km (0.118 R)
• M9: 3,193,915 km (0.052 R)
• M10: 3,689,383 km (0.101 R)
• M11: 4,075,944 km (0.119 R)
• M12: 4,597,143 km (0.115 R)
• M13: 6,199,037 km (0.032 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 606.9

Radius: 11.1

Gravity: 4.93 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 1.87 AU - 2.23 AU

Year: 1866 Days

Day: 12.6 Hours

Environment

Temp: -194 °C

Axial Tilt: 6.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 61,716,511 km

• M1: 138,079 km (0.091 R)
• M2: 508,932 km (0.106 R)
• M3: 988,094 km (0.096 R)
• M4: 1,372,710 km (0.098 R)
• M5: 1,912,160 km (0.092 R)
• M6: 2,406,282 km (0.104 R)
• M7: 3,845,114 km (0.06 R)
• M8: 5,956,838 km (0.111 R)
• M9: 6,991,905 km (0.054 R)
• M10: 7,343,909 km (0.045 R)
• M11: 9,383,377 km (0.114 R)
• M12: 9,779,213 km (0.059 R)
• M13: 10,781,668 km (0.108 R)
• M14: 12,629,501 km (0.036 R)
• M15: 13,071,712 km (0.076 R)
• M16: 14,287,494 km (0.081 R)
• M17: 14,811,984 km (0.087 R)

Planet 7 - Ice Giant

Semi-Major Axis: 10.02 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 871.5

Radius: 7.1

Gravity: 17.29 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 9.05 AU - 10.99 AU

Year: 20167 Days

Day: 16.1 Hours

Environment

Temp: -221 °C

Axial Tilt: 42.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 61,716,511 km

• M1: 88,712 km (0.059 R)
• M2: 453,581 km (0.102 R)
• M3: 674,537 km (0.074 R)
• M4: 899,981 km (0.073 R)
• M5: 1,429,408 km (0.108 R)
• M6: 1,736,532 km (0.114 R)
• M7: 2,025,705 km (0.074 R)
• M8: 2,257,881 km (0.106 R)
• M9: 3,372,086 km (0.036 R)
• M10: 4,082,376 km (0.111 R)
• M11: 4,317,395 km (0.114 R)
• M12: 5,549,183 km (0.095 R)
• M13: 7,485,129 km (0.094 R)
• M14: 7,838,031 km (0.096 R)
• M15: 8,686,550 km (0.117 R)
• M16: 10,440,435 km (0.1 R)
• M17: 11,466,378 km (0.083 R)
• M18: 14,169,761 km (0.111 R)
• M19: 22,311,026 km (0.083 R)
• M20: 23,574,680 km (0.039 R)
• M21: 25,332,604 km (0.027 R)
• M22: 30,359,990 km (0.104 R)
• M23: 30,999,521 km (0.048 R)
• M24: 32,838,079 km (0.049 R)
• M25: 40,149,974 km (0.038 R)
• M26: 46,591,359 km (0.114 R)
• M27: 64,998,330 km (0.063 R)
• M28: 74,048,552 km (0.106 R)
• M29: 80,933,495 km (0.06 R)
• M30: 82,905,345 km (0.117 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.27 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 333.9

Radius: 4.3

Gravity: 18.06 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 9.22 AU - 11.32 AU

Year: 20926 Days

Day: 24.8 Hours

Environment

Temp: -234 °C

Axial Tilt: 29.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 61,716,511 km

• M1: 57,446 km (0.057 R)
• M2: 265,835 km (0.113 R)
• M3: 1,751,941 km (0.089 R)
• M4: 2,209,561 km (0.092 R)
• M5: 2,812,141 km (0.098 R)
• M6: 15,035,783 km (0.087 R)
• M7: 16,142,358 km (0.104 R)
• M8: 16,599,829 km (0.096 R)
• M9: 24,041,425 km (0.11 R)
• M10: 40,240,182 km (0.074 R)
• M11: 43,524,005 km (0.083 R)
• M12: 45,607,903 km (0.107 R)
• M13: 45,910,839 km (0.108 R)
• M14: 48,069,685 km (0.116 R)
• M15: 52,091,475 km (0.068 R)
• M16: 53,088,993 km (0.087 R)
• M17: 57,558,828 km (0.1 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 491 - 20,002 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit