🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.54

Radius: 1.45

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 0.57 AU - 0.67 AU

Year: 320 Days

Day: 46.2 Hours

Environment

Temp: -130 °C

Axial Tilt: 36.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 374.9

Radius: 12.8

Gravity: 2.29 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 0.6 AU - 0.94 AU

Year: 443 Days

Day: 14 Hours

Environment

Temp: -148 °C

Axial Tilt: 36.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 35,603,757 km

• M1: 159,172 km (0.097 R)
• M2: 691,292 km (0.093 R)
• M3: 1,500,467 km (0.102 R)
• M4: 1,962,425 km (0.079 R)
• M5: 3,309,703 km (0.082 R)
• M6: 4,168,993 km (0.066 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 699.4

Radius: 13.4

Gravity: 3.9 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 0.84 AU - 1 AU

Year: 579 Days

Day: 10.9 Hours

Environment

Temp: -154 °C

Axial Tilt: 11.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 35,603,757 km

• M1: 166,802 km (0.097 R)
• M2: 731,534 km (0.116 R)
• M3: 1,199,476 km (0.056 R)
• M4: 1,645,577 km (0.046 R)
• M5: 2,327,144 km (0.08 R)
• M6: 2,855,524 km (0.065 R)
• M7: 3,765,827 km (0.092 R)
• M8: 4,424,058 km (0.049 R)
• M9: 4,991,632 km (0.096 R)
• M10: 5,466,456 km (0.067 R)
• M11: 6,064,847 km (0.072 R)
• M12: 6,566,898 km (0.07 R)
• M13: 7,075,680 km (0.079 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 582.2

Radius: 11.5

Gravity: 4.4 G

Time & Orbit

Eccentricity (e): 0.013

Orbit Range: 1.94 AU - 2 AU

Year: 1814 Days

Day: 8.6 Hours

Environment

Temp: -199 °C

Axial Tilt: 14.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 35,603,757 km

• M1: 143,165 km (0.095 R)
• M2: 729,439 km (0.058 R)
• M3: 1,233,434 km (0.047 R)
• M4: 1,619,696 km (0.111 R)
• M5: 2,853,280 km (0.067 R)
• M6: 3,494,008 km (0.104 R)
• M7: 4,062,779 km (0.047 R)
• M8: 8,350,404 km (0.103 R)
• M9: 9,499,166 km (0.064 R)
• M10: 11,397,413 km (0.079 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 484.8

Radius: 12.1

Gravity: 3.31 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 1.97 AU - 3.15 AU

Year: 2687 Days

Day: 5.5 Hours

Environment

Temp: -191 °C

Axial Tilt: 35.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 35,603,757 km

• M1: 151,393 km (0.046 R)
• M2: 589,565 km (0.11 R)
• M3: 1,279,211 km (0.07 R)
• M4: 1,663,080 km (0.063 R)
• M5: 2,289,595 km (0.12 R)
• M6: 2,717,146 km (0.084 R)
• M7: 3,181,797 km (0.081 R)
• M8: 3,663,203 km (0.079 R)
• M9: 4,795,509 km (0.076 R)
• M10: 5,502,509 km (0.087 R)
• M11: 6,760,777 km (0.053 R)
• M12: 7,472,563 km (0.097 R)
• M13: 8,139,620 km (0.076 R)
• M14: 9,079,244 km (0.067 R)
• M15: 10,162,183 km (0.096 R)
• M16: 10,943,383 km (0.075 R)
• M17: 11,965,586 km (0.112 R)
• M18: 14,799,119 km (0.087 R)
• M19: 16,547,469 km (0.114 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 656.7

Radius: 14.9

Gravity: 2.96 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 3.82 AU - 4.06 AU

Year: 5130 Days

Day: 8.5 Hours

Environment

Temp: -215 °C

Axial Tilt: 21 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 35,603,757 km

• M1: 185,352 km (0.112 R)
• M2: 661,372 km (0.115 R)
• M3: 1,286,990 km (0.074 R)
• M4: 1,943,725 km (0.107 R)
• M5: 3,271,107 km (0.046 R)
• M6: 4,016,553 km (0.103 R)
• M7: 4,541,492 km (0.039 R)
• M8: 5,303,993 km (0.104 R)
• M9: 6,526,656 km (0.117 R)
• M10: 8,919,175 km (0.092 R)
• M11: 9,484,954 km (0.082 R)
• M12: 10,378,951 km (0.061 R)
• M13: 10,914,511 km (0.101 R)
• M14: 11,704,986 km (0.082 R)
• M15: 12,683,506 km (0.097 R)
• M16: 14,471,350 km (0.07 R)
• M17: 18,738,480 km (0.036 R)
• M18: 20,214,861 km (0.109 R)
• M19: 22,204,662 km (0.113 R)
• M20: 26,903,083 km (0.106 R)
• M21: 28,346,253 km (0.115 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.29 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 960.5

Radius: 12

Gravity: 6.67 G

Time & Orbit

Eccentricity (e): 0.007

Orbit Range: 4.26 AU - 4.32 AU

Year: 5829 Days

Day: 13.9 Hours

Environment

Temp: -223 °C

Axial Tilt: 37.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 35,603,757 km

• M1: 149,299 km (0.097 R)
• M2: 626,965 km (0.061 R)
• M3: 1,096,852 km (0.028 R)
• M4: 2,147,178 km (0.091 R)
• M5: 2,553,636 km (0.105 R)
• M6: 3,282,476 km (0.085 R)
• M7: 4,324,725 km (0.085 R)
• M8: 7,237,994 km (0.082 R)
• M9: 9,165,562 km (0.029 R)
• M10: 9,969,800 km (0.051 R)
• M11: 16,260,541 km (0.042 R)
• M12: 17,844,184 km (0.085 R)
• M13: 20,260,488 km (0.094 R)
• M14: 24,534,350 km (0.112 R)
• M15: 25,043,432 km (0.068 R)
• M16: 27,151,116 km (0.118 R)
• M17: 31,119,798 km (0.109 R)
• M18: 36,329,394 km (0.105 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 544.4

Radius: 13.3

Gravity: 3.08 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 3.92 AU - 5.94 AU

Year: 7181 Days

Day: 6.5 Hours

Environment

Temp: -216 °C

Axial Tilt: 37.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 35,603,757 km

• M1: 165,455 km (0.071 R)
• M2: 1,103,284 km (0.115 R)
• M3: 1,917,097 km (0.094 R)
• M4: 2,680,046 km (0.089 R)
• M5: 3,525,573 km (0.099 R)
• M6: 4,233,470 km (0.065 R)
• M7: 7,974,165 km (0.107 R)
• M8: 9,897,694 km (0.09 R)
• M9: 13,282,795 km (0.117 R)
• M10: 13,782,302 km (0.089 R)
• M11: 15,968,974 km (0.086 R)
• M12: 19,920,153 km (0.107 R)
• M13: 22,706,114 km (0.119 R)
• M14: 25,401,868 km (0.082 R)
• M15: 29,318,939 km (0.042 R)
• M16: 32,409,032 km (0.081 R)
• M17: 34,136,140 km (0.093 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 277 - 12,963 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit