🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.58

Radius: 1.2

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 0.52 AU - 0.64 AU

Year: 290 Days

Day: 24.4 Hours

Environment

Temp: -123 °C

Axial Tilt: 135.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 77,605,544 km

• M1: 265,387 km (0.073 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 579.5

Radius: 8.8

Gravity: 7.48 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 0.73 AU - 0.89 AU

Year: 478 Days

Day: 8.4 Hours

Environment

Temp: -142 °C

Axial Tilt: 38.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 77,605,544 km

• M1: 109,506 km (0.053 R)
• M2: 582,085 km (0.113 R)
• M3: 1,084,884 km (0.059 R)
• M4: 1,527,245 km (0.032 R)
• M5: 2,069,238 km (0.099 R)
• M6: 2,514,441 km (0.106 R)
• M7: 2,913,419 km (0.081 R)
• M8: 3,559,981 km (0.056 R)
• M9: 3,878,026 km (0.109 R)
• M10: 4,780,250 km (0.079 R)
• M11: 5,104,878 km (0.116 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 439.6

Radius: 10.3

Gravity: 4.14 G

Time & Orbit

Eccentricity (e): 0.214

Orbit Range: 0.75 AU - 1.15 AU

Year: 607 Days

Day: 7.7 Hours

Environment

Temp: -150 °C

Axial Tilt: 17.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 77,605,544 km

• M1: 128,205 km (0.079 R)
• M2: 601,982 km (0.03 R)
• M3: 924,814 km (0.086 R)
• M4: 1,427,014 km (0.104 R)
• M5: 1,863,391 km (0.106 R)
• M6: 2,220,780 km (0.118 R)
• M7: 2,685,731 km (0.032 R)
• M8: 3,250,163 km (0.088 R)
• M9: 4,000,097 km (0.055 R)
• M10: 4,365,565 km (0.086 R)
• M11: 5,378,043 km (0.106 R)
• M12: 6,020,566 km (0.105 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 585.4

Radius: 10.8

Gravity: 5.02 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 0.99 AU - 1.37 AU

Year: 841 Days

Day: 7.3 Hours

Environment

Temp: -170 °C

Axial Tilt: 37.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 77,605,544 km

• M1: 135,386 km (0.076 R)
• M2: 487,240 km (0.038 R)
• M3: 1,709,604 km (0.116 R)
• M4: 2,153,461 km (0.05 R)
• M5: 2,685,132 km (0.083 R)
• M6: 3,172,223 km (0.102 R)
• M7: 3,688,784 km (0.064 R)
• M8: 4,421,066 km (0.094 R)
• M9: 5,085,131 km (0.113 R)
• M10: 5,834,167 km (0.114 R)
• M11: 7,048,752 km (0.113 R)
• M12: 7,527,765 km (0.057 R)
• M13: 8,004,234 km (0.068 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 623.1

Radius: 14.5

Gravity: 2.96 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 1.8 AU - 2.42 AU

Year: 2011 Days

Day: 8 Hours

Environment

Temp: -191 °C

Axial Tilt: 22.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 77,605,544 km

• M1: 180,714 km (0.041 R)
• M2: 794,215 km (0.117 R)
• M3: 1,339,649 km (0.068 R)
• M4: 2,421,840 km (0.089 R)
• M5: 3,083,511 km (0.116 R)
• M6: 3,584,365 km (0.101 R)
• M7: 4,941,367 km (0.11 R)
• M8: 5,562,647 km (0.053 R)
• M9: 6,037,920 km (0.119 R)
• M10: 6,775,736 km (0.109 R)
• M11: 9,029,428 km (0.106 R)
• M12: 10,030,238 km (0.109 R)
• M13: 10,522,116 km (0.102 R)
• M14: 11,252,752 km (0.116 R)
• M15: 12,095,287 km (0.113 R)
• M16: 13,606,824 km (0.06 R)
• M17: 14,832,030 km (0.099 R)
• M18: 15,471,561 km (0.1 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 598

Radius: 11.9

Gravity: 4.22 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 3.23 AU - 3.67 AU

Year: 4204 Days

Day: 14.1 Hours

Environment

Temp: -211 °C

Axial Tilt: 38.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 77,605,544 km

• M1: 148,551 km (0.086 R)
• M2: 733,478 km (0.097 R)
• M3: 1,243,906 km (0.11 R)
• M4: 2,251,897 km (0.077 R)
• M5: 2,887,239 km (0.12 R)
• M6: 3,762,686 km (0.091 R)
• M7: 4,423,759 km (0.1 R)
• M8: 5,668,862 km (0.1 R)
• M9: 6,269,048 km (0.076 R)
• M10: 6,692,560 km (0.038 R)
• M11: 9,648,315 km (0.109 R)
• M12: 12,990,630 km (0.109 R)
• M13: 13,882,982 km (0.105 R)
• M14: 14,344,192 km (0.116 R)
• M15: 15,351,434 km (0.073 R)
• M16: 22,480,072 km (0.119 R)
• M17: 24,426,191 km (0.1 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.27 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 504.8

Radius: 12.5

Gravity: 3.23 G

Time & Orbit

Eccentricity (e): 0.236

Orbit Range: 4.03 AU - 6.51 AU

Year: 7936 Days

Day: 7.7 Hours

Environment

Temp: -216 °C

Axial Tilt: 34.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 77,605,544 km

• M1: 155,432 km (0.049 R)
• M2: 570,865 km (0.112 R)
• M3: 1,495,680 km (0.032 R)
• M4: 2,816,030 km (0.086 R)
• M5: 4,166,450 km (0.092 R)
• M6: 4,610,756 km (0.076 R)
• M7: 5,000,458 km (0.077 R)
• M8: 6,304,204 km (0.115 R)
• M9: 8,218,458 km (0.101 R)
• M10: 8,626,860 km (0.064 R)
• M11: 10,446,120 km (0.105 R)
• M12: 11,572,293 km (0.065 R)
• M13: 13,551,323 km (0.076 R)
• M14: 18,446,315 km (0.05 R)
• M15: 20,532,757 km (0.092 R)
• M16: 21,826,479 km (0.109 R)
• M17: 24,324,614 km (0.059 R)
• M18: 34,939,630 km (0.09 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.22 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 861.9

Radius: 3.9

Gravity: 56.67 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 7.24 AU - 11.2 AU

Year: 18366 Days

Day: 19.3 Hours

Environment

Temp: -226 °C

Axial Tilt: 9.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 77,605,544 km

• M1: 48,619 km (0.101 R)
• M2: 226,940 km (0.119 R)
• M3: 614,847 km (0.099 R)
• M4: 787,483 km (0.054 R)
• M5: 1,862,793 km (0.077 R)
• M6: 1,999,376 km (0.051 R)
• M7: 2,426,777 km (0.034 R)
• M8: 2,735,547 km (0.116 R)
• M9: 3,431,027 km (0.03 R)
• M10: 3,697,311 km (0.096 R)
• M11: 4,756,165 km (0.11 R)
• M12: 5,200,620 km (0.075 R)
• M13: 8,518,851 km (0.086 R)
• M14: 9,173,042 km (0.082 R)
• M15: 10,953,706 km (0.074 R)
• M16: 12,672,585 km (0.088 R)
• M17: 14,036,918 km (0.119 R)
• M18: 17,739,166 km (0.046 R)
• M19: 18,802,059 km (0.057 R)
• M20: 19,441,440 km (0.114 R)
• M21: 21,544,786 km (0.106 R)
• M22: 25,748,935 km (0.117 R)
• M23: 29,972,233 km (0.028 R)
• M24: 30,343,684 km (0.082 R)
• M25: 43,756,480 km (0.077 R)
• M26: 45,852,944 km (0.037 R)
• M27: 49,379,116 km (0.073 R)
• M28: 51,119,986 km (0.106 R)
• M29: 51,473,037 km (0.081 R)
• M30: 61,033,986 km (0.106 R)
• M31: 63,647,312 km (0.093 R)
• M32: 67,599,388 km (0.087 R)
• M33: 67,811,817 km (0.066 R)
• M34: 69,960,641 km (0.094 R)
• M35: 71,932,939 km (0.104 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 347 - 19,464 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit