🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.81

Radius: 1.27

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 0.53 AU - 0.67 AU

Year: 300 Days

Day: 46.6 Hours

Environment

Temp: -125 °C

Axial Tilt: 4.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 38,085,612 km

• M1: 327,171 km (0.079 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 778.2

Radius: 11

Gravity: 6.43 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 0.73 AU - 0.89 AU

Year: 471 Days

Day: 14.1 Hours

Environment

Temp: -146 °C

Axial Tilt: 27.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 38,085,612 km

• M1: 136,732 km (0.105 R)
• M2: 647,908 km (0.088 R)
• M3: 1,018,911 km (0.067 R)
• M4: 1,508,695 km (0.045 R)
• M5: 1,873,713 km (0.035 R)
• M6: 2,316,972 km (0.069 R)
• M7: 3,592,443 km (0.038 R)
• M8: 4,311,411 km (0.034 R)
• M9: 4,728,489 km (0.097 R)
• M10: 5,421,876 km (0.118 R)
• M11: 5,766,848 km (0.061 R)
• M12: 6,255,884 km (0.065 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 87.3

Radius: 9.2

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 0.74 AU - 1.16 AU

Year: 598 Days

Day: 13.3 Hours

Environment

Temp: -164 °C

Axial Tilt: 8.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 38,085,612 km

• M1: 114,442 km (0.101 R)
• M2: 406,607 km (0.075 R)
• M3: 808,128 km (0.116 R)
• M4: 1,223,262 km (0.081 R)
• M5: 1,616,106 km (0.094 R)
• M6: 1,957,937 km (0.099 R)
• M7: 2,348,088 km (0.093 R)
• M8: 2,719,689 km (0.118 R)
• M9: 3,286,067 km (0.094 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 701.6

Radius: 11

Gravity: 5.8 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 1.3 AU - 2.16 AU

Year: 1469 Days

Day: 5.4 Hours

Environment

Temp: -193 °C

Axial Tilt: 39.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 38,085,612 km

• M1: 136,882 km (0.108 R)
• M2: 560,992 km (0.058 R)
• M3: 914,641 km (0.101 R)
• M4: 1,350,270 km (0.084 R)
• M5: 2,164,532 km (0.109 R)
• M6: 3,387,793 km (0.096 R)
• M7: 3,793,802 km (0.082 R)
• M8: 4,360,928 km (0.109 R)
• M9: 4,763,196 km (0.059 R)
• M10: 5,424,269 km (0.095 R)
• M11: 7,587,006 km (0.038 R)
• M12: 9,524,448 km (0.086 R)
• M13: 10,744,568 km (0.053 R)
• M14: 12,555,300 km (0.057 R)
• M15: 13,096,845 km (0.099 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 939.3

Radius: 9.3

Gravity: 10.86 G

Time & Orbit

Eccentricity (e): 0.092

Orbit Range: 2.43 AU - 2.93 AU

Year: 2833 Days

Day: 5.6 Hours

Environment

Temp: -189 °C

Axial Tilt: 26.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 38,085,612 km

• M1: 117,434 km (0.095 R)
• M2: 655,987 km (0.088 R)
• M3: 952,041 km (0.082 R)
• M4: 1,409,661 km (0.093 R)
• M5: 2,116,062 km (0.084 R)
• M6: 2,413,462 km (0.1 R)
• M7: 3,093,983 km (0.082 R)
• M8: 3,980,500 km (0.071 R)
• M9: 4,881,229 km (0.097 R)
• M10: 5,379,988 km (0.118 R)
• M11: 5,884,731 km (0.082 R)
• M12: 6,685,978 km (0.085 R)
• M13: 7,525,820 km (0.064 R)
• M14: 8,717,068 km (0.12 R)
• M15: 9,116,195 km (0.097 R)
• M16: 9,873,310 km (0.1 R)
• M17: 10,227,258 km (0.101 R)
• M18: 11,086,549 km (0.057 R)
• M19: 11,816,736 km (0.096 R)
• M20: 12,716,417 km (0.067 R)
• M21: 13,420,724 km (0.115 R)
• M22: 13,904,524 km (0.08 R)
• M23: 18,856,363 km (0.071 R)
• M24: 22,492,788 km (0.118 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 70.6

Radius: 11.5

Gravity: 0.53 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 2.03 AU - 3.35 AU

Year: 2849 Days

Day: 7.2 Hours

Environment

Temp: -201 °C

Axial Tilt: 13.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 38,085,612 km

• M1: 143,016 km (0.101 R)
• M2: 547,079 km (0.112 R)
• M3: 1,088,325 km (0.073 R)
• M4: 2,082,103 km (0.118 R)
• M5: 2,563,060 km (0.06 R)
• M6: 3,826,564 km (0.098 R)
• M7: 4,851,758 km (0.098 R)
• M8: 7,854,187 km (0.077 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 832.5

Radius: 10.9

Gravity: 7.01 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 2.43 AU - 3.49 AU

Year: 3288 Days

Day: 6.2 Hours

Environment

Temp: -205 °C

Axial Tilt: 43.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 38,085,612 km

• M1: 138,079 km (0.117 R)
• M2: 542,143 km (0.113 R)
• M3: 1,071,270 km (0.084 R)
• M4: 1,892,712 km (0.058 R)
• M5: 2,403,290 km (0.11 R)
• M6: 2,749,160 km (0.105 R)
• M7: 3,312,396 km (0.04 R)
• M8: 3,972,721 km (0.113 R)
• M9: 4,912,794 km (0.108 R)
• M10: 5,265,995 km (0.114 R)
• M11: 5,772,383 km (0.107 R)
• M12: 8,956,275 km (0.089 R)
• M13: 9,995,232 km (0.098 R)
• M14: 11,198,747 km (0.064 R)
• M15: 11,858,025 km (0.108 R)
• M16: 13,941,774 km (0.112 R)
• M17: 14,550,039 km (0.086 R)
• M18: 18,336,809 km (0.064 R)
• M19: 22,115,951 km (0.104 R)
• M20: 23,294,483 km (0.078 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 380.7

Radius: 9.9

Gravity: 3.88 G

Time & Orbit

Eccentricity (e): 0.145

Orbit Range: 4.23 AU - 5.67 AU

Year: 7111 Days

Day: 6.6 Hours

Environment

Temp: -212 °C

Axial Tilt: 31.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 38,085,612 km

• M1: 123,119 km (0.093 R)
• M2: 503,546 km (0.111 R)
• M3: 1,045,839 km (0.073 R)
• M4: 1,570,030 km (0.12 R)
• M5: 2,109,629 km (0.083 R)
• M6: 2,644,442 km (0.048 R)
• M7: 3,646,897 km (0.115 R)
• M8: 4,079,384 km (0.117 R)
• M9: 4,622,574 km (0.065 R)
• M10: 5,185,661 km (0.08 R)
• M11: 6,416,253 km (0.053 R)
• M12: 8,321,232 km (0.092 R)
• M13: 8,992,029 km (0.087 R)
• M14: 9,741,065 km (0.034 R)
• M15: 11,698,853 km (0.077 R)
• M16: 12,540,640 km (0.081 R)
• M17: 13,106,569 km (0.085 R)
• M18: 13,582,140 km (0.09 R)
• M19: 14,624,089 km (0.106 R)
• M20: 15,366,992 km (0.104 R)
• M21: 16,255,454 km (0.065 R)
• M22: 16,681,509 km (0.11 R)
• M23: 19,601,211 km (0.082 R)
• M24: 21,434,981 km (0.103 R)
• M25: 23,303,459 km (0.077 R)
• M26: 24,159,009 km (0.062 R)
• M27: 27,619,058 km (0.119 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.25 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 337.6

Radius: 7

Gravity: 6.89 G

Time & Orbit

Eccentricity (e): 0.137

Orbit Range: 5.39 AU - 7.11 AU

Year: 10089 Days

Day: 16.3 Hours

Environment

Temp: -230 °C

Axial Tilt: 15.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 38,085,612 km

• M1: 119,678 km (0.097 R)
• M2: 508,483 km (0.072 R)
• M3: 912,248 km (0.072 R)
• M4: 1,165,218 km (0.071 R)
• M5: 1,674,748 km (0.107 R)
• M6: 2,027,500 km (0.077 R)
• M7: 4,475,968 km (0.095 R)
• M8: 7,348,696 km (0.098 R)
• M9: 10,426,373 km (0.104 R)
• M10: 10,765,063 km (0.097 R)
• M11: 14,093,316 km (0.068 R)
• M12: 14,687,669 km (0.1 R)
• M13: 15,862,610 km (0.111 R)
• M14: 18,188,857 km (0.098 R)
• M15: 19,179,793 km (0.053 R)
• M16: 19,835,630 km (0.043 R)
• M17: 20,809,064 km (0.056 R)
• M18: 22,209,150 km (0.054 R)
• M19: 26,336,705 km (0.091 R)
• M20: 35,090,125 km (0.041 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 158 - 12,376 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit