🌌 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: 3.6

Radius: 1.67

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 0.47 AU - 0.67 AU

Year: 282 Days

Day: 23.9 Hours

Environment

Temp: -121 °C

Axial Tilt: 4.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 71,472,428 km

• M1: 554,410 km (0.096 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 259.2

Radius: 13.2

Gravity: 1.49 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 0.53 AU - 0.89 AU

Year: 392 Days

Day: 12 Hours

Environment

Temp: -144 °C

Axial Tilt: 19.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 71,472,428 km

• M1: 164,109 km (0.082 R)
• M2: 729,290 km (0.115 R)
• M3: 1,208,900 km (0.062 R)
• M4: 1,633,459 km (0.067 R)
• M5: 2,130,124 km (0.116 R)
• M6: 2,692,612 km (0.063 R)
• M7: 3,262,580 km (0.092 R)
• M8: 3,690,280 km (0.071 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 831.2

Radius: 13

Gravity: 4.92 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 0.69 AU - 0.77 AU

Year: 409 Days

Day: 12 Hours

Environment

Temp: -146 °C

Axial Tilt: 3.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 71,472,428 km

• M1: 161,715 km (0.116 R)
• M2: 631,453 km (0.109 R)
• M3: 1,290,880 km (0.042 R)
• M4: 1,791,883 km (0.091 R)
• M5: 2,339,711 km (0.115 R)
• M6: 2,796,732 km (0.057 R)
• M7: 3,290,256 km (0.104 R)
• M8: 3,764,930 km (0.099 R)
• M9: 4,243,643 km (0.056 R)
• M10: 4,747,937 km (0.1 R)
• M11: 5,389,562 km (0.092 R)
• M12: 5,843,143 km (0.053 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 963.7

Radius: 9.1

Gravity: 11.64 G

Time & Orbit

Eccentricity (e): 0.088

Orbit Range: 0.74 AU - 0.88 AU

Year: 478 Days

Day: 7 Hours

Environment

Temp: -144 °C

Axial Tilt: 18.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 71,472,428 km

• M1: 115,639 km (0.119 R)
• M2: 489,185 km (0.068 R)
• M3: 897,737 km (0.083 R)
• M4: 1,215,782 km (0.039 R)
• M5: 1,921,435 km (0.099 R)
• M6: 2,400,597 km (0.051 R)
• M7: 3,039,081 km (0.115 R)
• M8: 3,329,450 km (0.104 R)
• M9: 3,625,056 km (0.119 R)
• M10: 5,291,576 km (0.109 R)
• M11: 5,970,750 km (0.081 R)
• M12: 6,686,875 km (0.081 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 23.9

Radius: 9.8

Gravity: 0.25 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 1.56 AU - 1.68 AU

Year: 1353 Days

Day: 13.1 Hours

Environment

Temp: -189 °C

Axial Tilt: 43.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 71,472,428 km

• M1: 121,922 km (0.094 R)
• M2: 484,398 km (0.082 R)
• M3: 961,316 km (0.109 R)
• M4: 1,289,234 km (0.119 R)
• M5: 1,784,703 km (0.105 R)
• M6: 2,470,459 km (0.063 R)
• M7: 3,599,474 km (0.092 R)
• M8: 3,914,827 km (0.119 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 268.2

Radius: 8.3

Gravity: 3.89 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 4.66 AU - 5.08 AU

Year: 7050 Days

Day: 6.3 Hours

Environment

Temp: -211 °C

Axial Tilt: 14.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 71,472,428 km

• M1: 103,522 km (0.092 R)
• M2: 397,930 km (0.081 R)
• M3: 935,735 km (0.076 R)
• M4: 1,426,864 km (0.099 R)
• M5: 1,694,794 km (0.104 R)
• M6: 1,982,770 km (0.116 R)
• M7: 2,796,882 km (0.081 R)
• M8: 4,107,808 km (0.082 R)
• M9: 5,364,280 km (0.062 R)
• M10: 5,729,299 km (0.104 R)
• M11: 7,703,243 km (0.104 R)
• M12: 8,881,925 km (0.079 R)
• M13: 9,554,816 km (0.116 R)
• M14: 10,176,395 km (0.037 R)
• M15: 10,868,884 km (0.069 R)
• M16: 12,347,659 km (0.112 R)
• M17: 13,236,120 km (0.088 R)
• M18: 15,812,794 km (0.087 R)
• M19: 22,077,205 km (0.079 R)
• M20: 22,651,661 km (0.092 R)
• M21: 23,606,245 km (0.052 R)
• M22: 27,777,333 km (0.105 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.9 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 468.2

Radius: 3

Gravity: 52.02 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 9.29 AU - 10.51 AU

Year: 20434 Days

Day: 17.9 Hours

Environment

Temp: -233 °C

Axial Tilt: 21.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 71,472,428 km

• M1: 37,399 km (0.118 R)
• M2: 219,759 km (0.072 R)
• M3: 407,804 km (0.081 R)
• M4: 1,124,826 km (0.113 R)
• M5: 2,348,537 km (0.109 R)
• M6: 2,827,699 km (0.095 R)
• M7: 3,736,805 km (0.114 R)
• M8: 4,289,270 km (0.057 R)
• M9: 5,108,019 km (0.068 R)
• M10: 6,782,019 km (0.117 R)
• M11: 8,998,611 km (0.075 R)
• M12: 9,926,866 km (0.107 R)
• M13: 12,035,149 km (0.096 R)
• M14: 14,862,698 km (0.095 R)
• M15: 24,256,248 km (0.117 R)
• M16: 30,341,141 km (0.046 R)
• M17: 32,161,298 km (0.068 R)
• M18: 32,658,711 km (0.098 R)
• M19: 36,553,791 km (0.088 R)
• M20: 39,599,155 km (0.109 R)
• M21: 39,741,422 km (0.093 R)
• M22: 39,884,139 km (0.04 R)
• M23: 41,037,538 km (0.085 R)
• M24: 41,622,616 km (0.057 R)
• M25: 44,785,414 km (0.109 R)
• M26: 51,753,832 km (0.095 R)
• M27: 53,819,928 km (0.081 R)
• M28: 63,604,527 km (0.066 R)
• M29: 66,775,702 km (0.073 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.18 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 500.2

Radius: 7.9

Gravity: 8.01 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 8.13 AU - 12.23 AU

Year: 21307 Days

Day: 22.7 Hours

Environment

Temp: -232 °C

Axial Tilt: 13.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 71,472,428 km

• M1: 99,483 km (0.038 R)
• M2: 1,084,884 km (0.105 R)
• M3: 2,286,903 km (0.118 R)
• M4: 2,805,708 km (0.107 R)
• M5: 4,463,701 km (0.082 R)
• M6: 6,558,969 km (0.057 R)
• M7: 7,228,270 km (0.103 R)
• M8: 7,991,668 km (0.102 R)
• M9: 9,904,277 km (0.068 R)
• M10: 11,908,439 km (0.036 R)
• M11: 13,246,742 km (0.118 R)
• M12: 13,526,041 km (0.066 R)
• M13: 16,298,838 km (0.115 R)
• M14: 21,277,904 km (0.059 R)
• M15: 22,540,510 km (0.098 R)
• M16: 22,938,889 km (0.089 R)
• M17: 25,214,572 km (0.113 R)
• M18: 31,677,798 km (0.114 R)
• M19: 49,236,848 km (0.086 R)
• M20: 54,417,422 km (0.036 R)
• M21: 57,879,715 km (0.071 R)
• M22: 64,437,039 km (0.091 R)
• M23: 68,724,813 km (0.12 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 345 - 18,628 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit