🌌 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: 1.7

Radius: 1.24

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 0.48 AU - 0.66 AU

Year: 282 Days

Day: 22.3 Hours

Environment

Temp: -115 °C

Axial Tilt: 46.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 19,431,960 km

• M1: 425,905 km (0.091 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 340.6

Radius: 9.9

Gravity: 3.48 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 0.69 AU - 0.73 AU

Year: 392 Days

Day: 7.1 Hours

Environment

Temp: -148 °C

Axial Tilt: 14 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 19,431,960 km

• M1: 127,757 km (0.095 R)
• M2: 551,717 km (0.11 R)
• M3: 933,491 km (0.12 R)
• M4: 1,320,949 km (0.089 R)
• M5: 1,635,853 km (0.081 R)
• M6: 2,560,218 km (0.113 R)
• M7: 2,891,428 km (0.099 R)
• M8: 3,345,756 km (0.078 R)
• M9: 4,284,034 km (0.115 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 545.9

Radius: 12.5

Gravity: 3.49 G

Time & Orbit

Eccentricity (e): 0.096

Orbit Range: 1.87 AU - 2.27 AU

Year: 1954 Days

Day: 6.7 Hours

Environment

Temp: -200 °C

Axial Tilt: 3.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 19,431,960 km

• M1: 155,582 km (0.079 R)
• M2: 790,326 km (0.094 R)
• M3: 1,973,346 km (0.1 R)
• M4: 2,526,110 km (0.083 R)
• M5: 3,074,535 km (0.111 R)
• M6: 3,718,704 km (0.114 R)
• M7: 4,335,645 km (0.041 R)
• M8: 4,935,683 km (0.11 R)
• M9: 5,659,287 km (0.118 R)
• M10: 6,131,568 km (0.038 R)
• M11: 7,236,647 km (0.06 R)
• M12: 9,443,066 km (0.055 R)
• M13: 10,143,484 km (0.075 R)
• M14: 10,842,554 km (0.113 R)
• M15: 12,611,998 km (0.12 R)
• M16: 13,093,105 km (0.109 R)
• M17: 13,711,692 km (0.116 R)
• M18: 14,436,195 km (0.11 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 174.1

Radius: 9

Gravity: 2.15 G

Time & Orbit

Eccentricity (e): 0.056

Orbit Range: 2.55 AU - 2.85 AU

Year: 2910 Days

Day: 10.4 Hours

Environment

Temp: -199 °C

Axial Tilt: 16.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 19,431,960 km

• M1: 111,899 km (0.053 R)
• M2: 421,268 km (0.069 R)
• M3: 1,029,981 km (0.12 R)
• M4: 1,686,716 km (0.104 R)
• M5: 2,058,317 km (0.085 R)
• M6: 2,586,547 km (0.077 R)
• M7: 3,340,072 km (0.099 R)
• M8: 3,982,894 km (0.103 R)
• M9: 4,745,095 km (0.118 R)
• M10: 7,429,030 km (0.034 R)
• M11: 9,945,117 km (0.092 R)
• M12: 10,919,897 km (0.084 R)
• M13: 11,700,947 km (0.067 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 257.2

Radius: 12

Gravity: 1.79 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 5.28 AU - 5.54 AU

Year: 8255 Days

Day: 10.3 Hours

Environment

Temp: -227 °C

Axial Tilt: 34.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 19,431,960 km

• M1: 153,487 km (0.12 R)
• M2: 537,206 km (0.098 R)
• M3: 942,467 km (0.12 R)
• M4: 1,436,439 km (0.113 R)
• M5: 1,890,767 km (0.102 R)
• M6: 2,871,980 km (0.059 R)
• M7: 3,313,144 km (0.05 R)
• M8: 4,431,538 km (0.119 R)
• M9: 5,639,690 km (0.105 R)
• M10: 6,559,867 km (0.1 R)
• M11: 9,420,627 km (0.111 R)
• M12: 11,784,273 km (0.097 R)
• M13: 14,081,199 km (0.113 R)
• M14: 14,574,273 km (0.119 R)
• M15: 21,712,635 km (0.084 R)
• M16: 23,269,949 km (0.093 R)
• M17: 25,219,508 km (0.092 R)
• M18: 26,275,220 km (0.041 R)
• M19: 26,855,810 km (0.037 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.16 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 186.9

Radius: 6.3

Gravity: 4.71 G

Time & Orbit

Eccentricity (e): 0.038

Orbit Range: 5.93 AU - 6.39 AU

Year: 10030 Days

Day: 24.2 Hours

Environment

Temp: -211 °C

Axial Tilt: 27.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 19,431,960 km

• M1: 78,688 km (0.1 R)
• M2: 338,241 km (0.083 R)
• M3: 797,656 km (0.041 R)
• M4: 1,086,978 km (0.097 R)
• M5: 1,851,573 km (0.085 R)
• M6: 2,315,177 km (0.068 R)
• M7: 3,202,442 km (0.113 R)
• M8: 4,678,075 km (0.109 R)
• M9: 9,507,543 km (0.081 R)
• M10: 10,197,189 km (0.113 R)
• M11: 11,968,129 km (0.109 R)
• M12: 13,503,901 km (0.101 R)
• M13: 14,710,407 km (0.09 R)
• M14: 16,106,754 km (0.117 R)
• M15: 18,363,438 km (0.086 R)
• M16: 21,762,301 km (0.109 R)
• M17: 22,956,990 km (0.119 R)
• M18: 24,990,623 km (0.087 R)
• M19: 26,051,123 km (0.117 R)
• M20: 26,467,005 km (0.107 R)
• M21: 27,141,392 km (0.111 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.33 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 278.9

Radius: 5.3

Gravity: 9.93 G

Time & Orbit

Eccentricity (e): 0.186

Orbit Range: 5.15 AU - 7.51 AU

Year: 10448 Days

Day: 20.5 Hours

Environment

Temp: -222 °C

Axial Tilt: 23.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 19,431,960 km

• M1: 65,973 km (0.109 R)
• M2: 271,819 km (0.088 R)
• M3: 858,841 km (0.055 R)
• M4: 1,061,696 km (0.097 R)
• M5: 1,450,950 km (0.044 R)
• M6: 1,945,520 km (0.118 R)
• M7: 2,165,878 km (0.106 R)
• M8: 2,751,853 km (0.078 R)
• M9: 3,505,228 km (0.102 R)
• M10: 3,808,612 km (0.065 R)
• M11: 4,103,918 km (0.112 R)
• M12: 4,309,167 km (0.11 R)
• M13: 5,319,251 km (0.084 R)
• M14: 5,688,609 km (0.072 R)
• M15: 6,756,887 km (0.059 R)
• M16: 9,772,780 km (0.071 R)
• M17: 10,093,219 km (0.111 R)
• M18: 10,420,688 km (0.112 R)
• M19: 11,096,871 km (0.089 R)
• M20: 11,648,289 km (0.099 R)
• M21: 11,956,759 km (0.097 R)
• M22: 13,079,192 km (0.086 R)
• M23: 14,742,122 km (0.089 R)
• M24: 15,655,417 km (0.04 R)
• M25: 17,062,086 km (0.092 R)
• M26: 17,526,737 km (0.111 R)
• M27: 19,470,312 km (0.094 R)
• M28: 19,759,186 km (0.05 R)
• M29: 26,683,772 km (0.084 R)
• M30: 29,340,630 km (0.106 R)
• M31: 31,272,388 km (0.117 R)
• M32: 31,470,156 km (0.03 R)
• M33: 35,387,077 km (0.057 R)
• M34: 36,578,774 km (0.09 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.85 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 15.3

Radius: 6.8

Gravity: 0.33 G

Time & Orbit

Eccentricity (e): 0.248

Orbit Range: 6.66 AU - 11.04 AU

Year: 17271 Days

Day: 15.2 Hours

Environment

Temp: -219 °C

Axial Tilt: 3.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 19,431,960 km

• M1: 98,735 km (0.087 R)
• M2: 469,588 km (0.094 R)
• M3: 1,056,610 km (0.05 R)
• M4: 2,868,240 km (0.075 R)
• M5: 4,673,288 km (0.047 R)
• M6: 10,027,695 km (0.111 R)
• M7: 11,799,382 km (0.067 R)
• M8: 16,883,017 km (0.066 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 337 - 16,605 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit