🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.31

Radius: 1.79

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.002

Orbit Range: 0.67 AU - 0.67 AU

Year: 354 Days

Day: 29 Hours

Environment

Temp: -136 °C

Axial Tilt: 11 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 61,066,441 km

• M1: 43,832 km (0.098 R)
• M2: 484,847 km (0.113 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 422.4

Radius: 12.9

Gravity: 2.54 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 0.65 AU - 0.89 AU

Year: 436 Days

Day: 12.6 Hours

Environment

Temp: -143 °C

Axial Tilt: 28.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 61,066,441 km

• M1: 160,519 km (0.117 R)
• M2: 606,470 km (0.086 R)
• M3: 1,105,827 km (0.119 R)
• M4: 1,574,368 km (0.091 R)
• M5: 1,987,707 km (0.079 R)
• M6: 2,474,798 km (0.037 R)
• M7: 2,909,379 km (0.098 R)
• M8: 3,428,933 km (0.093 R)
• M9: 3,898,521 km (0.076 R)
• M10: 4,464,748 km (0.104 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 580

Radius: 13.7

Gravity: 3.09 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 0.83 AU - 0.83 AU

Year: 488 Days

Day: 12.3 Hours

Environment

Temp: -151 °C

Axial Tilt: 35.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 61,066,441 km

• M1: 170,392 km (0.11 R)
• M2: 758,461 km (0.09 R)
• M3: 1,209,798 km (0.082 R)
• M4: 1,972,897 km (0.109 R)
• M5: 3,722,444 km (0.083 R)
• M6: 4,563,034 km (0.025 R)
• M7: 5,395,247 km (0.032 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 187.5

Radius: 13.8

Gravity: 0.98 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 0.95 AU - 1.01 AU

Year: 626 Days

Day: 12.8 Hours

Environment

Temp: -148 °C

Axial Tilt: 11.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 61,066,441 km

• M1: 171,589 km (0.072 R)
• M2: 837,748 km (0.101 R)
• M3: 1,384,528 km (0.103 R)
• M4: 2,402,392 km (0.09 R)
• M5: 3,101,463 km (0.1 R)
• M6: 3,945,195 km (0.092 R)
• M7: 4,535,359 km (0.102 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 274.3

Radius: 10.7

Gravity: 2.4 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 0.99 AU - 1.63 AU

Year: 968 Days

Day: 9.5 Hours

Environment

Temp: -162 °C

Axial Tilt: 0.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 61,066,441 km

• M1: 133,591 km (0.076 R)
• M2: 528,230 km (0.114 R)
• M3: 892,650 km (0.102 R)
• M4: 1,278,613 km (0.081 R)
• M5: 1,885,083 km (0.042 R)
• M6: 2,255,487 km (0.114 R)
• M7: 3,133,776 km (0.096 R)
• M8: 4,500,203 km (0.105 R)
• M9: 4,934,037 km (0.083 R)
• M10: 5,960,877 km (0.094 R)
• M11: 6,307,046 km (0.117 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 587.9

Radius: 8.6

Gravity: 7.95 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 1.92 AU - 2.26 AU

Year: 1951 Days

Day: 14 Hours

Environment

Temp: -198 °C

Axial Tilt: 23.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 61,066,441 km

• M1: 107,262 km (0.105 R)
• M2: 433,834 km (0.1 R)
• M3: 805,136 km (0.063 R)
• M4: 1,080,695 km (0.112 R)
• M5: 1,420,881 km (0.055 R)
• M6: 1,789,639 km (0.104 R)
• M7: 2,101,700 km (0.064 R)
• M8: 2,385,039 km (0.096 R)
• M9: 2,779,080 km (0.064 R)
• M10: 3,768,370 km (0.116 R)
• M11: 4,481,354 km (0.026 R)
• M12: 4,828,122 km (0.119 R)
• M13: 5,483,959 km (0.052 R)
• M14: 5,833,569 km (0.1 R)
• M15: 7,162,148 km (0.116 R)
• M16: 7,467,178 km (0.049 R)
• M17: 7,781,034 km (0.045 R)
• M18: 8,619,680 km (0.032 R)
• M19: 9,484,206 km (0.118 R)
• M20: 10,126,429 km (0.11 R)
• M21: 10,440,585 km (0.109 R)
• M22: 15,095,323 km (0.117 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 682.6

Radius: 13.4

Gravity: 3.8 G

Time & Orbit

Eccentricity (e): 0.16

Orbit Range: 2.31 AU - 3.19 AU

Year: 2945 Days

Day: 9.8 Hours

Environment

Temp: -195 °C

Axial Tilt: 22.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 61,066,441 km

• M1: 166,652 km (0.065 R)
• M2: 739,911 km (0.087 R)
• M3: 1,164,021 km (0.116 R)
• M4: 1,636,900 km (0.106 R)
• M5: 2,186,373 km (0.099 R)
• M6: 2,640,103 km (0.04 R)
• M7: 3,071,843 km (0.113 R)
• M8: 3,645,401 km (0.043 R)
• M9: 4,121,870 km (0.062 R)
• M10: 4,550,618 km (0.102 R)
• M11: 5,177,134 km (0.091 R)
• M12: 5,940,232 km (0.073 R)
• M13: 6,489,705 km (0.08 R)
• M14: 8,789,922 km (0.108 R)
• M15: 9,395,494 km (0.086 R)
• M16: 10,028,742 km (0.068 R)
• M17: 12,627,407 km (0.115 R)
• M18: 13,492,232 km (0.085 R)
• M19: 15,188,373 km (0.042 R)
• M20: 16,968,288 km (0.113 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 194.1

Radius: 12.3

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 2.48 AU - 4.02 AU

Year: 3783 Days

Day: 14 Hours

Environment

Temp: -199 °C

Axial Tilt: 29 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 61,066,441 km

• M1: 153,787 km (0.067 R)
• M2: 728,691 km (0.086 R)
• M3: 1,629,719 km (0.044 R)
• M4: 2,794,039 km (0.073 R)
• M5: 4,843,381 km (0.097 R)
• M6: 6,267,852 km (0.112 R)
• M7: 6,710,661 km (0.107 R)
• M8: 8,663,811 km (0.037 R)
• M9: 9,050,073 km (0.115 R)
• M10: 9,481,663 km (0.091 R)
• M11: 11,309,150 km (0.094 R)
• M12: 13,488,791 km (0.116 R)
• M13: 13,877,596 km (0.112 R)
• M14: 15,181,790 km (0.12 R)
• M15: 16,370,196 km (0.109 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.15 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 929.5

Radius: 5.1

Gravity: 35.74 G

Time & Orbit

Eccentricity (e): 0.163

Orbit Range: 5.98 AU - 8.32 AU

Year: 12345 Days

Day: 21.2 Hours

Environment

Temp: -231 °C

Axial Tilt: 38.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 61,066,441 km

• M1: 66,571 km (0.045 R)
• M2: 384,766 km (0.093 R)
• M3: 758,312 km (0.076 R)
• M4: 1,148,014 km (0.113 R)
• M5: 1,505,553 km (0.084 R)
• M6: 4,550,767 km (0.117 R)
• M7: 5,659,437 km (0.108 R)
• M8: 6,356,563 km (0.089 R)
• M9: 6,979,937 km (0.072 R)
• M10: 7,780,735 km (0.053 R)
• M11: 8,395,881 km (0.057 R)
• M12: 9,509,937 km (0.074 R)
• M13: 10,719,286 km (0.106 R)
• M14: 11,904,400 km (0.113 R)
• M15: 12,089,453 km (0.119 R)
• M16: 12,401,963 km (0.091 R)
• M17: 13,043,438 km (0.118 R)
• M18: 13,438,676 km (0.108 R)
• M19: 13,639,287 km (0.095 R)
• M20: 16,971,430 km (0.097 R)
• M21: 18,658,445 km (0.118 R)
• M22: 22,549,186 km (0.103 R)
• M23: 23,794,589 km (0.09 R)
• M24: 23,990,263 km (0.117 R)
• M25: 27,160,690 km (0.074 R)
• M26: 29,124,013 km (0.082 R)
• M27: 30,254,673 km (0.11 R)
• M28: 31,531,790 km (0.113 R)
• M29: 31,767,856 km (0.112 R)
• M30: 37,131,687 km (0.093 R)
• M31: 42,204,701 km (0.047 R)
• M32: 44,091,429 km (0.101 R)
• M33: 45,731,022 km (0.107 R)
• M34: 47,565,690 km (0.047 R)
• M35: 50,087,461 km (0.089 R)
• M36: 50,893,495 km (0.114 R)
• M37: 55,395,493 km (0.109 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: 157 - 16,893 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit