🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.03

Radius: 1.33

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 0.49 AU - 0.61 AU

Year: 268 Days

Day: 44.5 Hours

Environment

Temp: -132 °C

Axial Tilt: 46.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 424

Radius: 9

Gravity: 5.23 G

Time & Orbit

Eccentricity (e): 0.135

Orbit Range: 0.79 AU - 1.03 AU

Year: 569 Days

Day: 14.2 Hours

Environment

Temp: -148 °C

Axial Tilt: 34 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 55,808,876 km

• M1: 111,899 km (0.089 R)
• M2: 407,654 km (0.114 R)
• M3: 693,386 km (0.114 R)
• M4: 1,072,617 km (0.103 R)
• M5: 1,419,684 km (0.111 R)
• M6: 2,182,633 km (0.073 R)
• M7: 2,497,387 km (0.118 R)
• M8: 2,885,145 km (0.074 R)
• M9: 3,667,242 km (0.045 R)
• M10: 4,225,541 km (0.1 R)
• M11: 4,808,824 km (0.109 R)
• M12: 5,120,137 km (0.056 R)
• M13: 5,528,240 km (0.079 R)
• M14: 5,835,364 km (0.07 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 12.9

Radius: 13.5

Gravity: 0.07 G

Time & Orbit

Eccentricity (e): 0.214

Orbit Range: 0.86 AU - 1.34 AU

Year: 757 Days

Day: 5.9 Hours

Environment

Temp: -166 °C

Axial Tilt: 28 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 55,808,876 km

• M1: 168,298 km (0.088 R)
• M2: 740,360 km (0.114 R)
• M3: 1,416,243 km (0.104 R)
• M4: 1,895,704 km (0.067 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 295.6

Radius: 9.5

Gravity: 3.28 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 1.2 AU - 1.46 AU

Year: 1006 Days

Day: 7.8 Hours

Environment

Temp: -174 °C

Axial Tilt: 14.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 55,808,876 km

• M1: 118,182 km (0.098 R)
• M2: 429,645 km (0.084 R)
• M3: 1,071,420 km (0.101 R)
• M4: 1,570,179 km (0.047 R)
• M5: 2,523,566 km (0.08 R)
• M6: 3,492,811 km (0.065 R)
• M7: 3,923,354 km (0.071 R)
• M8: 4,515,163 km (0.077 R)
• M9: 4,857,892 km (0.104 R)
• M10: 5,688,459 km (0.031 R)
• M11: 6,528,451 km (0.084 R)
• M12: 7,183,839 km (0.098 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 955.4

Radius: 13.5

Gravity: 5.24 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 1.62 AU - 1.82 AU

Year: 1480 Days

Day: 7.3 Hours

Environment

Temp: -184 °C

Axial Tilt: 32.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 55,808,876 km

• M1: 167,849 km (0.094 R)
• M2: 808,576 km (0.086 R)
• M3: 1,421,329 km (0.051 R)
• M4: 2,075,970 km (0.1 R)
• M5: 2,741,830 km (0.108 R)
• M6: 3,304,318 km (0.073 R)
• M7: 3,907,796 km (0.069 R)
• M8: 4,388,603 km (0.052 R)
• M9: 4,929,699 km (0.097 R)
• M10: 6,905,139 km (0.094 R)
• M11: 7,896,374 km (0.088 R)
• M12: 9,298,405 km (0.07 R)
• M13: 9,789,834 km (0.118 R)
• M14: 10,612,174 km (0.043 R)
• M15: 11,185,582 km (0.115 R)
• M16: 11,666,689 km (0.114 R)
• M17: 12,750,077 km (0.093 R)
• M18: 13,193,635 km (0.056 R)
• M19: 14,717,887 km (0.114 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 550.2

Radius: 12.4

Gravity: 3.58 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 1.68 AU - 2.56 AU

Year: 2025 Days

Day: 5.9 Hours

Environment

Temp: -182 °C

Axial Tilt: 107.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 55,808,876 km

• M1: 154,235 km (0.115 R)
• M2: 1,056,460 km (0.085 R)
• M3: 1,549,535 km (0.109 R)
• M4: 2,657,307 km (0.114 R)
• M5: 3,278,138 km (0.103 R)
• M6: 4,547,027 km (0.106 R)
• M7: 6,494,343 km (0.117 R)
• M8: 8,118,377 km (0.105 R)
• M9: 10,484,268 km (0.039 R)
• M10: 12,428,292 km (0.077 R)
• M11: 13,031,171 km (0.078 R)
• M12: 15,364,449 km (0.1 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.39 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 302.2

Radius: 4.4

Gravity: 15.61 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 8.48 AU - 10.3 AU

Year: 18876 Days

Day: 20.7 Hours

Environment

Temp: -239 °C

Axial Tilt: 1.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 55,808,876 km

• M1: 55,202 km (0.065 R)
• M2: 214,075 km (0.118 R)
• M3: 467,493 km (0.039 R)
• M4: 697,425 km (0.106 R)
• M5: 1,114,504 km (0.099 R)
• M6: 1,276,967 km (0.092 R)
• M7: 1,426,715 km (0.076 R)
• M8: 2,110,676 km (0.117 R)
• M9: 2,806,905 km (0.101 R)
• M10: 2,967,423 km (0.049 R)
• M11: 3,434,318 km (0.055 R)
• M12: 5,725,410 km (0.101 R)
• M13: 6,889,880 km (0.082 R)
• M14: 9,470,443 km (0.113 R)
• M15: 9,624,529 km (0.095 R)
• M16: 9,937,787 km (0.104 R)
• M17: 10,529,446 km (0.113 R)
• M18: 11,665,044 km (0.052 R)
• M19: 13,388,561 km (0.114 R)
• M20: 14,109,772 km (0.096 R)
• M21: 15,274,691 km (0.047 R)
• M22: 18,186,763 km (0.094 R)
• M23: 20,663,505 km (0.107 R)
• M24: 21,097,040 km (0.098 R)
• M25: 21,982,360 km (0.096 R)
• M26: 24,689,333 km (0.114 R)
• M27: 29,863,774 km (0.1 R)
• M28: 33,054,996 km (0.106 R)
• M29: 33,291,361 km (0.105 R)
• M30: 40,508,560 km (0.113 R)
• M31: 47,041,499 km (0.077 R)
• M32: 47,340,396 km (0.115 R)
• M33: 48,396,706 km (0.097 R)
• M34: 50,870,158 km (0.084 R)
• M35: 52,297,770 km (0.115 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.24 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 26.4

Radius: 3.4

Gravity: 2.28 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 9.87 AU - 10.61 AU

Year: 21496 Days

Day: 16.1 Hours

Environment

Temp: -227 °C

Axial Tilt: 15 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 55,808,876 km

• M1: 42,635 km (0.109 R)
• M2: 158,873 km (0.09 R)
• M3: 867,967 km (0.081 R)
• M4: 1,027,588 km (0.112 R)
• M5: 1,496,577 km (0.08 R)
• M6: 1,791,435 km (0.097 R)
• M7: 6,274,883 km (0.111 R)
• M8: 8,621,026 km (0.04 R)
• M9: 10,092,172 km (0.116 R)
• M10: 10,260,619 km (0.056 R)
• M11: 22,477,529 km (0.117 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.9 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 194

Radius: 6.6

Gravity: 4.45 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 10.01 AU - 11.79 AU

Year: 23607 Days

Day: 21.6 Hours

Environment

Temp: -227 °C

Axial Tilt: 25.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 55,808,876 km

• M1: 82,428 km (0.108 R)
• M2: 440,715 km (0.082 R)
• M3: 683,513 km (0.12 R)
• M4: 1,130,960 km (0.086 R)
• M5: 1,874,162 km (0.102 R)
• M6: 2,660,449 km (0.08 R)
• M7: 3,312,097 km (0.101 R)
• M8: 4,007,727 km (0.077 R)
• M9: 4,700,814 km (0.12 R)
• M10: 5,194,038 km (0.088 R)
• M11: 7,216,452 km (0.091 R)
• M12: 7,517,891 km (0.102 R)
• M13: 8,099,977 km (0.112 R)
• M14: 9,921,181 km (0.112 R)
• M15: 10,348,134 km (0.077 R)
• M16: 11,295,986 km (0.104 R)
• M17: 16,618,528 km (0.103 R)
• M18: 18,309,283 km (0.096 R)
• M19: 21,318,295 km (0.109 R)
• M20: 22,119,092 km (0.095 R)
• M21: 25,128,702 km (0.036 R)
• M22: 26,022,101 km (0.096 R)
• M23: 27,039,217 km (0.075 R)
• M24: 31,373,516 km (0.089 R)
• M25: 37,542,782 km (0.096 R)
• M26: 49,385,548 km (0.103 R)
• M27: 49,694,318 km (0.046 R)
• M28: 53,500,986 km (0.098 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 352 - 12,229 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit