🌌 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: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.19

Radius: 1.07

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.16

Orbit Range: 0.45 AU - 0.61 AU

Year: 253 Days

Day: 41.1 Hours

Environment

Temp: -114 °C

Axial Tilt: 38.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 40,528,369 km

• M1: 26,778 km (0.084 R)
• M2: 236,215 km (0.092 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.54

Radius: 0.78

Gravity: 0.89 G

Time & Orbit

Eccentricity (e): 0.184

Orbit Range: 0.47 AU - 0.69 AU

Year: 290 Days

Day: 16 Hours

Environment

Temp: -126 °C

Axial Tilt: 34.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 40,528,369 km

• M1: 18,251 km (0.114 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 102.6

Radius: 10.4

Gravity: 0.95 G

Time & Orbit

Eccentricity (e): 0.007

Orbit Range: 0.83 AU - 0.85 AU

Year: 505 Days

Day: 13.5 Hours

Environment

Temp: -147 °C

Axial Tilt: 11.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 40,528,369 km

• M1: 129,402 km (0.103 R)
• M2: 726,896 km (0.081 R)
• M3: 1,287,888 km (0.102 R)
• M4: 1,837,511 km (0.062 R)
• M5: 2,364,993 km (0.108 R)
• M6: 2,796,882 km (0.072 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 854

Radius: 10.2

Gravity: 8.21 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 0.66 AU - 1.02 AU

Year: 505 Days

Day: 11.3 Hours

Environment

Temp: -142 °C

Axial Tilt: 35 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 40,528,369 km

• M1: 127,308 km (0.111 R)
• M2: 488,886 km (0.114 R)
• M3: 818,300 km (0.1 R)
• M4: 1,342,491 km (0.089 R)
• M5: 2,010,296 km (0.063 R)
• M6: 2,886,491 km (0.103 R)
• M7: 3,500,889 km (0.111 R)
• M8: 3,873,986 km (0.092 R)
• M9: 4,422,861 km (0.1 R)
• M10: 5,172,795 km (0.113 R)
• M11: 5,821,152 km (0.087 R)
• M12: 6,269,946 km (0.075 R)
• M13: 6,822,710 km (0.11 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 890.8

Radius: 12.3

Gravity: 5.89 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 2.89 AU - 3.47 AU

Year: 3720 Days

Day: 14.3 Hours

Environment

Temp: -197 °C

Axial Tilt: 1.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 40,528,369 km

• M1: 153,039 km (0.058 R)
• M2: 625,917 km (0.044 R)
• M3: 1,026,541 km (0.116 R)
• M4: 1,450,800 km (0.1 R)
• M5: 1,940,584 km (0.09 R)
• M6: 2,460,885 km (0.049 R)
• M7: 3,241,935 km (0.106 R)
• M8: 4,227,486 km (0.026 R)
• M9: 4,878,686 km (0.111 R)
• M10: 5,821,302 km (0.048 R)
• M11: 7,207,027 km (0.106 R)
• M12: 7,680,205 km (0.104 R)
• M13: 8,210,081 km (0.08 R)
• M14: 9,264,746 km (0.099 R)
• M15: 11,414,766 km (0.117 R)
• M16: 12,105,908 km (0.114 R)
• M17: 12,922,862 km (0.031 R)
• M18: 13,673,844 km (0.105 R)
• M19: 15,483,828 km (0.088 R)
• M20: 16,620,323 km (0.064 R)
• M21: 19,380,105 km (0.087 R)
• M22: 23,006,357 km (0.075 R)
• M23: 26,026,290 km (0.12 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 308.6

Radius: 11.3

Gravity: 2.42 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 3.39 AU - 3.69 AU

Year: 4369 Days

Day: 6.8 Hours

Environment

Temp: -215 °C

Axial Tilt: 16.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 40,528,369 km

• M1: 140,472 km (0.113 R)
• M2: 505,641 km (0.092 R)
• M3: 930,648 km (0.109 R)
• M4: 1,516,174 km (0.1 R)
• M5: 1,906,625 km (0.102 R)
• M6: 2,643,694 km (0.091 R)
• M7: 3,851,397 km (0.11 R)
• M8: 4,841,137 km (0.104 R)
• M9: 5,222,761 km (0.052 R)
• M10: 5,727,953 km (0.061 R)
• M11: 6,293,582 km (0.115 R)
• M12: 6,925,633 km (0.104 R)
• M13: 8,017,997 km (0.061 R)
• M14: 8,588,563 km (0.074 R)
• M15: 12,158,118 km (0.112 R)
• M16: 13,139,331 km (0.099 R)
• M17: 14,957,244 km (0.04 R)
• M18: 15,926,638 km (0.115 R)
• M19: 18,677,593 km (0.108 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 631.7

Radius: 11

Gravity: 5.22 G

Time & Orbit

Eccentricity (e): 0.248

Orbit Range: 3.71 AU - 6.17 AU

Year: 7203 Days

Day: 8.8 Hours

Environment

Temp: -213 °C

Axial Tilt: 28.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 40,528,369 km

• M1: 136,732 km (0.113 R)
• M2: 492,626 km (0.095 R)
• M3: 1,057,208 km (0.108 R)
• M4: 1,541,008 km (0.108 R)
• M5: 2,170,216 km (0.036 R)
• M6: 3,820,131 km (0.103 R)
• M7: 4,190,685 km (0.118 R)
• M8: 4,558,247 km (0.106 R)
• M9: 5,209,147 km (0.096 R)
• M10: 5,697,734 km (0.081 R)
• M11: 6,873,723 km (0.05 R)
• M12: 8,910,348 km (0.087 R)
• M13: 12,948,743 km (0.092 R)
• M14: 14,548,393 km (0.1 R)
• M15: 15,150,524 km (0.105 R)
• M16: 15,706,580 km (0.079 R)
• M17: 17,189,394 km (0.032 R)
• M18: 17,794,368 km (0.102 R)
• M19: 18,136,647 km (0.099 R)
• M20: 22,275,721 km (0.051 R)
• M21: 22,833,871 km (0.09 R)
• M22: 23,812,241 km (0.032 R)
• M23: 31,359,603 km (0.069 R)
• M24: 31,859,410 km (0.079 R)
• M25: 32,364,602 km (0.106 R)
• M26: 33,287,172 km (0.028 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.24 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 73.6

Radius: 4.6

Gravity: 3.48 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 6.8 AU - 7.68 AU

Year: 12780 Days

Day: 22.6 Hours

Environment

Temp: -220 °C

Axial Tilt: 18.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 40,528,369 km

• M1: 59,839 km (0.09 R)
• M2: 216,019 km (0.064 R)
• M3: 387,309 km (0.057 R)
• M4: 590,164 km (0.072 R)
• M5: 902,225 km (0.106 R)
• M6: 1,695,093 km (0.112 R)
• M7: 1,943,576 km (0.077 R)
• M8: 2,416,903 km (0.091 R)
• M9: 3,285,468 km (0.094 R)
• M10: 3,505,826 km (0.092 R)
• M11: 3,866,058 km (0.114 R)
• M12: 5,641,186 km (0.093 R)
• M13: 7,044,115 km (0.074 R)
• M14: 7,896,673 km (0.088 R)
• M15: 9,046,632 km (0.064 R)
• M16: 10,646,581 km (0.1 R)
• M17: 12,282,284 km (0.079 R)
• M18: 15,368,638 km (0.103 R)
• M19: 16,271,312 km (0.116 R)
• M20: 17,268,531 km (0.096 R)
• M21: 17,508,935 km (0.098 R)
• M22: 17,690,696 km (0.108 R)
• M23: 18,681,632 km (0.107 R)
• M24: 19,190,714 km (0.109 R)
• M25: 24,648,344 km (0.112 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.43 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 84.8

Radius: 7

Gravity: 1.73 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 8.39 AU - 12.47 AU

Year: 22097 Days

Day: 16.6 Hours

Environment

Temp: -232 °C

Axial Tilt: 38.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 40,528,369 km

• M1: 506,090 km (0.088 R)
• M2: 856,747 km (0.05 R)
• M3: 2,306,201 km (0.102 R)
• M4: 5,203,164 km (0.107 R)
• M5: 6,490,603 km (0.069 R)
• M6: 6,742,376 km (0.083 R)
• M7: 8,866,067 km (0.08 R)
• M8: 10,838,216 km (0.111 R)
• M9: 12,915,682 km (0.056 R)
• M10: 16,876,734 km (0.118 R)
• M11: 17,285,136 km (0.057 R)
• M12: 25,720,362 km (0.109 R)
• M13: 27,929,474 km (0.101 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 429 - 14,136 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit