🌌 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: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.57

Radius: 1.66

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 0.51 AU - 0.63 AU

Year: 282 Days

Day: 27.4 Hours

Environment

Temp: -118 °C

Axial Tilt: 28.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.26

Radius: 1.6

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 0.59 AU - 0.67 AU

Year: 328 Days

Day: 17.3 Hours

Environment

Temp: -135 °C

Axial Tilt: 37.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 51,925,756 km

• M1: 307,872 km (0.102 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 572.1

Radius: 9.1

Gravity: 6.91 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 0.65 AU - 0.75 AU

Year: 384 Days

Day: 7.1 Hours

Environment

Temp: -148 °C

Axial Tilt: 15.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 51,925,756 km

• M1: 113,395 km (0.1 R)
• M2: 526,884 km (0.11 R)
• M3: 917,933 km (0.098 R)
• M4: 1,388,119 km (0.112 R)
• M5: 2,507,709 km (0.112 R)
• M6: 3,071,095 km (0.083 R)
• M7: 3,597,230 km (0.068 R)
• M8: 4,078,487 km (0.105 R)
• M9: 4,757,661 km (0.119 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 966.4

Radius: 9.9

Gravity: 9.86 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 1.01 AU - 1.15 AU

Year: 736 Days

Day: 11.1 Hours

Environment

Temp: -173 °C

Axial Tilt: 144.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 51,925,756 km

• M1: 123,269 km (0.09 R)
• M2: 509,231 km (0.116 R)
• M3: 1,267,393 km (0.042 R)
• M4: 1,733,839 km (0.071 R)
• M5: 2,355,269 km (0.043 R)
• M6: 2,742,428 km (0.104 R)
• M7: 3,066,756 km (0.115 R)
• M8: 3,459,152 km (0.115 R)
• M9: 3,900,166 km (0.096 R)
• M10: 4,230,927 km (0.047 R)
• M11: 5,433,395 km (0.117 R)
• M12: 6,367,334 km (0.111 R)
• M13: 7,031,848 km (0.101 R)
• M14: 7,428,581 km (0.048 R)
• M15: 7,889,493 km (0.092 R)
• M16: 9,194,584 km (0.118 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 493.2

Radius: 13.5

Gravity: 2.71 G

Time & Orbit

Eccentricity (e): 0.063

Orbit Range: 1.61 AU - 1.83 AU

Year: 1480 Days

Day: 13.1 Hours

Environment

Temp: -189 °C

Axial Tilt: 33.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 51,925,756 km

• M1: 294,109 km (0.044 R)
• M2: 870,959 km (0.101 R)
• M3: 1,291,628 km (0.087 R)
• M4: 1,902,436 km (0.077 R)
• M5: 2,328,192 km (0.116 R)
• M6: 3,684,745 km (0.072 R)
• M7: 5,127,766 km (0.051 R)
• M8: 6,077,862 km (0.089 R)
• M9: 6,895,564 km (0.048 R)
• M10: 7,369,341 km (0.078 R)
• M11: 9,098,692 km (0.106 R)
• M12: 10,201,228 km (0.106 R)
• M13: 10,984,373 km (0.094 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 497.9

Radius: 13

Gravity: 2.95 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 2.7 AU - 3.86 AU

Year: 3897 Days

Day: 14.3 Hours

Environment

Temp: -208 °C

Axial Tilt: 36.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 51,925,756 km

• M1: 161,715 km (0.11 R)
• M2: 741,856 km (0.077 R)
• M3: 1,889,720 km (0.058 R)
• M4: 2,547,203 km (0.087 R)
• M5: 3,618,772 km (0.118 R)
• M6: 4,214,322 km (0.12 R)
• M7: 5,603,039 km (0.038 R)
• M8: 6,875,967 km (0.114 R)
• M9: 8,402,613 km (0.044 R)
• M10: 9,079,992 km (0.062 R)
• M11: 9,716,830 km (0.119 R)
• M12: 10,625,638 km (0.105 R)
• M13: 13,645,719 km (0.067 R)
• M14: 19,064,603 km (0.077 R)
• M15: 22,924,677 km (0.105 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 136

Radius: 14.3

Gravity: 0.67 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 3.67 AU - 5.51 AU

Year: 6451 Days

Day: 9.9 Hours

Environment

Temp: -206 °C

Axial Tilt: 44.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 51,925,756 km

• M1: 178,919 km (0.1 R)
• M2: 703,858 km (0.05 R)
• M3: 1,313,619 km (0.07 R)
• M4: 2,495,741 km (0.101 R)
• M5: 3,528,565 km (0.058 R)
• M6: 4,472,378 km (0.086 R)
• M7: 5,231,288 km (0.112 R)
• M8: 7,277,637 km (0.114 R)
• M9: 9,738,522 km (0.089 R)
• M10: 11,885,551 km (0.096 R)
• M11: 15,217,245 km (0.108 R)
• M12: 18,952,853 km (0.082 R)
• M13: 19,422,142 km (0.062 R)
• M14: 20,019,785 km (0.08 R)
• M15: 20,568,062 km (0.102 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 956.4

Radius: 12

Gravity: 6.64 G

Time & Orbit

Eccentricity (e): 0.231

Orbit Range: 4.22 AU - 6.76 AU

Year: 8439 Days

Day: 6.9 Hours

Environment

Temp: -224 °C

Axial Tilt: 21.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 51,925,756 km

• M1: 456,124 km (0.052 R)
• M2: 903,422 km (0.063 R)
• M3: 1,312,422 km (0.041 R)
• M4: 1,816,866 km (0.091 R)
• M5: 2,913,419 km (0.05 R)
• M6: 3,484,434 km (0.116 R)
• M7: 3,862,168 km (0.03 R)
• M8: 4,761,102 km (0.095 R)
• M9: 6,401,442 km (0.11 R)
• M10: 10,399,146 km (0.087 R)
• M11: 11,351,187 km (0.117 R)
• M12: 13,612,509 km (0.045 R)
• M13: 19,163,188 km (0.113 R)
• M14: 20,919,617 km (0.102 R)
• M15: 24,021,828 km (0.106 R)
• M16: 24,475,708 km (0.108 R)
• M17: 27,123,889 km (0.069 R)
• M18: 28,821,675 km (0.096 R)
• M19: 32,208,272 km (0.064 R)
• M20: 38,017,157 km (0.118 R)
• M21: 46,704,904 km (0.063 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.99 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 592.5

Radius: 3.6

Gravity: 45.72 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 6.2 AU - 7.78 AU

Year: 12123 Days

Day: 22.6 Hours

Environment

Temp: -214 °C

Axial Tilt: 6.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (41)

Outer Limit: 51,925,756 km

• M1: 61,784 km (0.027 R)
• M2: 216,319 km (0.092 R)
• M3: 337,343 km (0.115 R)
• M4: 478,713 km (0.081 R)
• M5: 643,570 km (0.04 R)
• M6: 1,065,885 km (0.104 R)
• M7: 1,220,719 km (0.114 R)
• M8: 1,390,213 km (0.105 R)
• M9: 2,307,547 km (0.105 R)
• M10: 2,505,914 km (0.064 R)
• M11: 2,651,473 km (0.084 R)
• M12: 3,699,555 km (0.092 R)
• M13: 4,083,872 km (0.061 R)
• M14: 4,931,793 km (0.093 R)
• M15: 5,569,978 km (0.117 R)
• M16: 6,111,223 km (0.11 R)
• M17: 6,926,830 km (0.104 R)
• M18: 7,297,683 km (0.11 R)
• M19: 8,723,650 km (0.082 R)
• M20: 10,115,060 km (0.108 R)
• M21: 11,251,106 km (0.12 R)
• M22: 12,112,790 km (0.103 R)
• M23: 12,894,289 km (0.089 R)
• M24: 13,901,681 km (0.075 R)
• M25: 14,623,940 km (0.101 R)
• M26: 16,285,972 km (0.064 R)
• M27: 18,692,104 km (0.067 R)
• M28: 20,310,454 km (0.105 R)
• M29: 21,068,167 km (0.119 R)
• M30: 21,670,448 km (0.032 R)
• M31: 23,089,983 km (0.111 R)
• M32: 24,194,613 km (0.05 R)
• M33: 26,907,720 km (0.088 R)
• M34: 32,585,707 km (0.051 R)
• M35: 38,372,602 km (0.073 R)
• M36: 39,528,694 km (0.041 R)
• M37: 42,725,002 km (0.119 R)
• M38: 42,861,884 km (0.059 R)
• M39: 43,274,026 km (0.039 R)
• M40: 44,666,783 km (0.065 R)
• M41: 47,541,755 km (0.105 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 350 - 19,731 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit