🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.66

Radius: 0.85

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 0.57 AU - 0.71 AU

Year: 336 Days

Day: 19.5 Hours

Environment

Temp: -135 °C

Axial Tilt: 112.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 34,027,592 km

• M1: 48,919 km (0.106 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 497.9

Radius: 10.3

Gravity: 4.69 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 0.76 AU - 0.9 AU

Year: 496 Days

Day: 13.3 Hours

Environment

Temp: -142 °C

Axial Tilt: 41.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 34,027,592 km

• M1: 128,056 km (0.096 R)
• M2: 465,698 km (0.091 R)
• M3: 814,112 km (0.088 R)
• M4: 1,181,823 km (0.047 R)
• M5: 1,662,182 km (0.059 R)
• M6: 2,260,873 km (0.105 R)
• M7: 3,129,737 km (0.052 R)
• M8: 3,573,594 km (0.11 R)
• M9: 4,631,700 km (0.08 R)
• M10: 5,682,924 km (0.116 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 11.7

Radius: 8

Gravity: 0.18 G

Time & Orbit

Eccentricity (e): 0.144

Orbit Range: 1.22 AU - 1.62 AU

Year: 1110 Days

Day: 11.9 Hours

Environment

Temp: -165 °C

Axial Tilt: 156.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 34,027,592 km

• M1: 99,483 km (0.086 R)
• M2: 717,920 km (0.097 R)
• M3: 2,159,445 km (0.116 R)
• M4: 2,689,321 km (0.066 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 638.1

Radius: 11.8

Gravity: 4.58 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 1.2 AU - 1.72 AU

Year: 1157 Days

Day: 14.3 Hours

Environment

Temp: -176 °C

Axial Tilt: 18.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 34,027,592 km

• M1: 146,756 km (0.118 R)
• M2: 684,560 km (0.091 R)
• M3: 1,221,467 km (0.108 R)
• M4: 1,610,571 km (0.071 R)
• M5: 2,032,287 km (0.11 R)
• M6: 2,837,872 km (0.115 R)
• M7: 3,416,815 km (0.114 R)
• M8: 3,893,434 km (0.054 R)
• M9: 4,449,639 km (0.064 R)
• M10: 5,392,854 km (0.112 R)
• M11: 5,805,744 km (0.111 R)
• M12: 6,533,537 km (0.058 R)
• M13: 7,173,367 km (0.119 R)
• M14: 7,725,084 km (0.074 R)
• M15: 8,999,359 km (0.12 R)
• M16: 10,440,435 km (0.09 R)
• M17: 10,986,019 km (0.1 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 525.5

Radius: 10.6

Gravity: 4.68 G

Time & Orbit

Eccentricity (e): 0.186

Orbit Range: 1.47 AU - 2.15 AU

Year: 1597 Days

Day: 13.5 Hours

Environment

Temp: -182 °C

Axial Tilt: 31.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 34,027,592 km

• M1: 131,796 km (0.061 R)
• M2: 491,130 km (0.056 R)
• M3: 1,235,978 km (0.056 R)
• M4: 1,572,573 km (0.089 R)
• M5: 2,111,873 km (0.039 R)
• M6: 2,852,532 km (0.11 R)
• M7: 3,329,151 km (0.085 R)
• M8: 3,758,048 km (0.038 R)
• M9: 4,259,799 km (0.086 R)
• M10: 4,864,773 km (0.089 R)
• M11: 5,397,790 km (0.065 R)
• M12: 6,293,582 km (0.118 R)
• M13: 6,827,048 km (0.083 R)
• M14: 7,337,925 km (0.099 R)
• M15: 7,901,610 km (0.066 R)
• M16: 9,085,378 km (0.071 R)
• M17: 9,831,123 km (0.103 R)
• M18: 10,219,031 km (0.087 R)
• M19: 11,801,926 km (0.091 R)
• M20: 12,501,146 km (0.114 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 435.2

Radius: 10.3

Gravity: 4.1 G

Time & Orbit

Eccentricity (e): 0.005

Orbit Range: 1.92 AU - 1.94 AU

Year: 1759 Days

Day: 10.2 Hours

Environment

Temp: -198 °C

Axial Tilt: 19.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 34,027,592 km

• M1: 128,056 km (0.119 R)
• M2: 551,717 km (0.114 R)
• M3: 947,852 km (0.09 R)
• M4: 1,449,304 km (0.071 R)
• M5: 2,002,667 km (0.105 R)
• M6: 3,195,411 km (0.116 R)
• M7: 4,353,896 km (0.085 R)
• M8: 4,988,640 km (0.117 R)
• M9: 7,557,834 km (0.112 R)
• M10: 8,189,586 km (0.114 R)
• M11: 9,496,174 km (0.099 R)
• M12: 10,297,719 km (0.098 R)
• M13: 11,005,467 km (0.1 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 810.1

Radius: 8.5

Gravity: 11.21 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 2.21 AU - 3.65 AU

Year: 3290 Days

Day: 7.9 Hours

Environment

Temp: -208 °C

Axial Tilt: 21.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 34,027,592 km

• M1: 105,766 km (0.059 R)
• M2: 442,361 km (0.102 R)
• M3: 774,767 km (0.086 R)
• M4: 1,145,770 km (0.088 R)
• M5: 1,656,647 km (0.07 R)
• M6: 2,182,633 km (0.117 R)
• M7: 2,716,099 km (0.073 R)
• M8: 3,315,089 km (0.054 R)
• M9: 3,977,807 km (0.119 R)
• M10: 4,443,805 km (0.089 R)
• M11: 4,726,096 km (0.06 R)
• M12: 5,045,487 km (0.051 R)
• M13: 5,484,856 km (0.101 R)
• M14: 6,034,329 km (0.059 R)
• M15: 7,870,344 km (0.092 R)
• M16: 9,694,989 km (0.066 R)
• M17: 10,498,180 km (0.098 R)
• M18: 10,873,671 km (0.062 R)
• M19: 11,344,904 km (0.073 R)
• M20: 14,209,255 km (0.111 R)
• M21: 15,138,856 km (0.072 R)
• M22: 16,890,796 km (0.082 R)
• M23: 17,581,340 km (0.075 R)
• M24: 19,327,596 km (0.105 R)
• M25: 24,085,706 km (0.064 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 75.3

Radius: 8.5

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 3.55 AU - 3.67 AU

Year: 4500 Days

Day: 5.3 Hours

Environment

Temp: -215 °C

Axial Tilt: 35.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 34,027,592 km

• M1: 107,262 km (0.07 R)
• M2: 527,781 km (0.04 R)
• M3: 816,804 km (0.1 R)
• M4: 1,169,257 km (0.039 R)
• M5: 3,263,029 km (0.074 R)
• M6: 4,674,485 km (0.111 R)
• M7: 6,676,104 km (0.115 R)
• M8: 7,241,285 km (0.057 R)
• M9: 11,358,966 km (0.085 R)

Planet 9 - Gas Giant

Semi-Major Axis: 3.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 960

Radius: 9.2

Gravity: 11.34 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 3.49 AU - 4.31 AU

Year: 5052 Days

Day: 14.5 Hours

Environment

Temp: -211 °C

Axial Tilt: 37 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 34,027,592 km

• M1: 114,442 km (0.068 R)
• M2: 796,908 km (0.052 R)
• M3: 1,095,655 km (0.034 R)
• M4: 1,543,700 km (0.045 R)
• M5: 2,236,339 km (0.104 R)
• M6: 2,609,136 km (0.078 R)
• M7: 3,225,330 km (0.094 R)
• M8: 5,695,341 km (0.096 R)
• M9: 6,198,588 km (0.102 R)
• M10: 6,903,942 km (0.06 R)
• M11: 7,366,648 km (0.096 R)
• M12: 8,041,484 km (0.097 R)
• M13: 9,299,452 km (0.094 R)
• M14: 10,132,713 km (0.094 R)
• M15: 11,548,357 km (0.083 R)
• M16: 12,667,200 km (0.069 R)
• M17: 14,024,651 km (0.046 R)
• M18: 16,898,575 km (0.093 R)
• M19: 17,348,117 km (0.115 R)
• M20: 20,503,435 km (0.057 R)
• M21: 20,794,702 km (0.075 R)
• M22: 23,462,481 km (0.078 R)
• M23: 24,919,565 km (0.11 R)
• M24: 27,392,717 km (0.046 R)
• M25: 32,920,657 km (0.062 R)
• M26: 33,420,763 km (0.113 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: 203 - 17,654 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit