🌌 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: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.84

Radius: 1.52

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 0.59 AU - 0.67 AU

Year: 323 Days

Day: 44.1 Hours

Environment

Temp: -138 °C

Axial Tilt: 37.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.65

Radius: 1.85

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 0.55 AU - 0.79 AU

Year: 354 Days

Day: 27.3 Hours

Environment

Temp: -141 °C

Axial Tilt: 171.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 356.3

Radius: 11.2

Gravity: 2.84 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 0.8 AU - 0.8 AU

Year: 462 Days

Day: 14.8 Hours

Environment

Temp: -146 °C

Axial Tilt: 15.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 78,941,197 km

• M1: 139,276 km (0.1 R)
• M2: 536,308 km (0.115 R)
• M3: 886,367 km (0.117 R)
• M4: 1,519,914 km (0.114 R)
• M5: 1,910,066 km (0.09 R)
• M6: 2,393,566 km (0.079 R)
• M7: 2,789,402 km (0.112 R)
• M8: 3,371,038 km (0.113 R)
• M9: 3,786,621 km (0.082 R)
• M10: 4,354,196 km (0.099 R)
• M11: 4,749,583 km (0.119 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 550.3

Radius: 14.8

Gravity: 2.51 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 0.73 AU - 1.07 AU

Year: 551 Days

Day: 9.8 Hours

Environment

Temp: -143 °C

Axial Tilt: 11.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 78,941,197 km

• M1: 184,454 km (0.075 R)
• M2: 658,679 km (0.059 R)
• M3: 1,182,422 km (0.07 R)
• M4: 1,906,026 km (0.12 R)
• M5: 2,623,348 km (0.1 R)
• M6: 3,102,809 km (0.078 R)
• M7: 3,940,408 km (0.081 R)
• M8: 4,589,513 km (0.118 R)
• M9: 5,425,466 km (0.114 R)
• M10: 6,013,685 km (0.081 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.58 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 489.7

Radius: 13.1

Gravity: 2.85 G

Time & Orbit

Eccentricity (e): 0.231

Orbit Range: 1.98 AU - 3.18 AU

Year: 2676 Days

Day: 10.9 Hours

Environment

Temp: -206 °C

Axial Tilt: 39.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 78,941,197 km

• M1: 162,912 km (0.041 R)
• M2: 814,112 km (0.114 R)
• M3: 1,857,108 km (0.087 R)
• M4: 2,817,975 km (0.059 R)
• M5: 3,259,738 km (0.063 R)
• M6: 3,933,826 km (0.086 R)
• M7: 4,406,405 km (0.063 R)
• M8: 5,855,709 km (0.112 R)
• M9: 6,500,925 km (0.092 R)
• M10: 6,938,648 km (0.12 R)
• M11: 7,483,783 km (0.097 R)
• M12: 9,157,634 km (0.092 R)
• M13: 11,262,176 km (0.107 R)
• M14: 12,057,439 km (0.098 R)
• M15: 12,678,270 km (0.077 R)
• M16: 14,716,092 km (0.072 R)
• M17: 16,607,907 km (0.104 R)
• M18: 17,481,409 km (0.11 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 769.9

Radius: 14.1

Gravity: 3.87 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 2.6 AU - 2.78 AU

Year: 2849 Days

Day: 14.4 Hours

Environment

Temp: -196 °C

Axial Tilt: 31.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 78,941,197 km

• M1: 175,628 km (0.101 R)
• M2: 630,256 km (0.118 R)
• M3: 1,182,122 km (0.114 R)
• M4: 1,738,327 km (0.116 R)
• M5: 2,217,938 km (0.111 R)
• M6: 2,708,619 km (0.118 R)
• M7: 3,434,169 km (0.028 R)
• M8: 4,014,758 km (0.109 R)
• M9: 4,593,103 km (0.086 R)
• M10: 5,251,184 km (0.065 R)
• M11: 6,327,990 km (0.113 R)
• M12: 7,053,988 km (0.095 R)
• M13: 8,535,007 km (0.079 R)
• M14: 10,370,274 km (0.032 R)
• M15: 11,173,764 km (0.092 R)
• M16: 13,551,473 km (0.1 R)
• M17: 14,122,637 km (0.113 R)
• M18: 14,610,925 km (0.117 R)
• M19: 17,223,352 km (0.084 R)
• M20: 19,228,114 km (0.113 R)
• M21: 20,940,710 km (0.09 R)
• M22: 21,576,351 km (0.045 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 260.2

Radius: 14.1

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 3.18 AU - 3.88 AU

Year: 4282 Days

Day: 7.7 Hours

Environment

Temp: -198 °C

Axial Tilt: 16.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 78,941,197 km

• M1: 176,974 km (0.075 R)
• M2: 652,097 km (0.039 R)
• M3: 1,181,674 km (0.038 R)
• M4: 1,623,586 km (0.052 R)
• M5: 2,102,897 km (0.048 R)
• M6: 2,560,517 km (0.107 R)
• M7: 3,036,238 km (0.087 R)
• M8: 3,626,552 km (0.047 R)
• M9: 4,856,545 km (0.117 R)
• M10: 6,213,697 km (0.076 R)
• M11: 7,112,481 km (0.11 R)
• M12: 8,160,564 km (0.109 R)
• M13: 9,309,475 km (0.07 R)
• M14: 10,913,464 km (0.068 R)
• M15: 15,100,409 km (0.084 R)
• M16: 15,898,065 km (0.082 R)
• M17: 16,987,437 km (0.093 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.61 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 543.2

Radius: 6.1

Gravity: 14.6 G

Time & Orbit

Eccentricity (e): 0.096

Orbit Range: 8.69 AU - 10.53 AU

Year: 19235 Days

Day: 23.6 Hours

Environment

Temp: -221 °C

Axial Tilt: 22.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 78,941,197 km

• M1: 75,846 km (0.08 R)
• M2: 356,641 km (0.058 R)
• M3: 599,887 km (0.111 R)
• M4: 988,393 km (0.114 R)
• M5: 1,713,195 km (0.093 R)
• M6: 1,982,621 km (0.101 R)
• M7: 2,769,954 km (0.097 R)
• M8: 3,065,410 km (0.108 R)
• M9: 3,604,411 km (0.109 R)
• M10: 4,300,340 km (0.052 R)
• M11: 5,563,844 km (0.117 R)
• M12: 6,704,378 km (0.115 R)
• M13: 7,799,435 km (0.091 R)
• M14: 7,992,865 km (0.111 R)
• M15: 9,061,891 km (0.102 R)
• M16: 10,690,413 km (0.118 R)
• M17: 14,807,646 km (0.088 R)
• M18: 15,787,811 km (0.116 R)
• M19: 16,570,657 km (0.099 R)
• M20: 17,052,661 km (0.101 R)
• M21: 17,709,695 km (0.115 R)
• M22: 18,298,363 km (0.065 R)
• M23: 20,416,070 km (0.067 R)
• M24: 22,987,358 km (0.1 R)
• M25: 23,385,887 km (0.085 R)
• M26: 26,522,506 km (0.119 R)
• M27: 27,071,231 km (0.112 R)
• M28: 31,004,607 km (0.074 R)
• M29: 32,354,429 km (0.068 R)
• M30: 33,360,475 km (0.1 R)
• M31: 38,285,685 km (0.117 R)
• M32: 40,269,054 km (0.107 R)
• M33: 42,171,041 km (0.084 R)
• M34: 47,910,962 km (0.105 R)
• M35: 52,585,596 km (0.11 R)
• M36: 53,625,302 km (0.114 R)
• M37: 57,555,088 km (0.095 R)
• M38: 58,659,270 km (0.093 R)
• M39: 66,786,773 km (0.119 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.68 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 602.5

Radius: 4.5

Gravity: 29.75 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 9.58 AU - 11.78 AU

Year: 22536 Days

Day: 17 Hours

Environment

Temp: -221 °C

Axial Tilt: 4.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 78,941,197 km

• M1: 58,792 km (0.094 R)
• M2: 213,775 km (0.088 R)
• M3: 597,045 km (0.078 R)
• M4: 918,980 km (0.07 R)
• M5: 1,474,736 km (0.09 R)
• M6: 4,844,129 km (0.079 R)
• M7: 4,991,931 km (0.11 R)
• M8: 6,684,482 km (0.106 R)
• M9: 12,135,678 km (0.098 R)
• M10: 14,974,747 km (0.088 R)
• M11: 15,607,247 km (0.11 R)
• M12: 16,257,399 km (0.093 R)
• M13: 19,687,229 km (0.107 R)
• M14: 30,117,343 km (0.117 R)
• M15: 30,743,709 km (0.094 R)
• M16: 32,543,371 km (0.092 R)
• M17: 33,202,799 km (0.116 R)
• M18: 35,234,338 km (0.119 R)
• M19: 38,654,743 km (0.101 R)
• M20: 46,146,754 km (0.112 R)
• M21: 47,314,366 km (0.039 R)
• M22: 53,997,501 km (0.099 R)
• M23: 58,721,203 km (0.11 R)
• M24: 59,501,655 km (0.11 R)
• M25: 68,979,728 km (0.063 R)
• M26: 75,904,464 km (0.064 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: 550 - 12,149 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit