🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.06

Radius: 1.34

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 0.47 AU - 0.55 AU

Year: 239 Days

Day: 28.6 Hours

Environment

Temp: -117 °C

Axial Tilt: 35.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 879

Radius: 12.5

Gravity: 5.63 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 0.84 AU - 1.08 AU

Year: 617 Days

Day: 7.6 Hours

Environment

Temp: -160 °C

Axial Tilt: 2.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 79,624,039 km

• M1: 155,432 km (0.115 R)
• M2: 566,078 km (0.096 R)
• M3: 1,195,137 km (0.119 R)
• M4: 1,609,673 km (0.103 R)
• M5: 2,038,570 km (0.103 R)
• M6: 2,522,818 km (0.071 R)
• M7: 2,974,903 km (0.111 R)
• M8: 3,602,616 km (0.109 R)
• M9: 4,426,751 km (0.066 R)
• M10: 5,336,904 km (0.111 R)
• M11: 6,974,103 km (0.109 R)
• M12: 7,849,699 km (0.04 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 723.6

Radius: 13.6

Gravity: 3.91 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 0.9 AU - 1.36 AU

Year: 788 Days

Day: 14.5 Hours

Environment

Temp: -163 °C

Axial Tilt: 29.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 79,624,039 km

• M1: 170,093 km (0.056 R)
• M2: 607,816 km (0.061 R)
• M3: 1,112,559 km (0.112 R)
• M4: 1,539,960 km (0.114 R)
• M5: 3,011,106 km (0.083 R)
• M6: 3,608,001 km (0.119 R)
• M7: 4,125,909 km (0.04 R)
• M8: 5,166,512 km (0.046 R)
• M9: 5,594,661 km (0.119 R)
• M10: 6,271,292 km (0.106 R)
• M11: 7,159,305 km (0.114 R)
• M12: 7,957,859 km (0.091 R)
• M13: 8,841,234 km (0.117 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 929.1

Radius: 14.9

Gravity: 4.18 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 1.16 AU - 1.36 AU

Year: 928 Days

Day: 13.7 Hours

Environment

Temp: -173 °C

Axial Tilt: 22.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 79,624,039 km

• M1: 186,549 km (0.099 R)
• M2: 709,393 km (0.05 R)
• M3: 1,367,474 km (0.113 R)
• M4: 2,314,279 km (0.09 R)
• M5: 3,053,592 km (0.075 R)
• M6: 3,621,016 km (0.116 R)
• M7: 4,694,680 km (0.097 R)
• M8: 5,355,903 km (0.051 R)
• M9: 6,363,594 km (0.107 R)
• M10: 6,936,704 km (0.072 R)
• M11: 7,899,964 km (0.089 R)
• M12: 8,617,735 km (0.109 R)
• M13: 9,731,192 km (0.115 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 39.3

Radius: 11.4

Gravity: 0.3 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 1.29 AU - 2.03 AU

Year: 1403 Days

Day: 13.4 Hours

Environment

Temp: -184 °C

Axial Tilt: 31.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 79,624,039 km

• M1: 141,819 km (0.049 R)
• M2: 540,946 km (0.118 R)
• M3: 1,237,174 km (0.075 R)
• M4: 1,819,559 km (0.07 R)
• M5: 3,869,349 km (0.079 R)
• M6: 4,446,049 km (0.113 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 32.1

Radius: 10.5

Gravity: 0.29 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 2.6 AU - 2.66 AU

Year: 2798 Days

Day: 11 Hours

Environment

Temp: -200 °C

Axial Tilt: 13.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 79,624,039 km

• M1: 134,339 km (0.087 R)
• M2: 634,744 km (0.038 R)
• M3: 1,060,350 km (0.037 R)
• M4: 1,468,453 km (0.027 R)
• M5: 2,088,386 km (0.117 R)
• M6: 4,685,555 km (0.043 R)
• M7: 7,349,145 km (0.114 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 538.5

Radius: 10.3

Gravity: 5.08 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 2.68 AU - 3.62 AU

Year: 3668 Days

Day: 7.5 Hours

Environment

Temp: -214 °C

Axial Tilt: 44.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 79,624,039 km

• M1: 133,142 km (0.047 R)
• M2: 612,304 km (0.08 R)
• M3: 1,037,611 km (0.099 R)
• M4: 2,237,087 km (0.108 R)
• M5: 2,589,689 km (0.109 R)
• M6: 3,153,074 km (0.087 R)
• M7: 3,837,185 km (0.086 R)
• M8: 4,947,800 km (0.081 R)
• M9: 6,967,670 km (0.062 R)
• M10: 7,340,618 km (0.037 R)
• M11: 7,958,607 km (0.111 R)
• M12: 8,610,704 km (0.093 R)
• M13: 9,224,205 km (0.09 R)
• M14: 9,905,174 km (0.082 R)
• M15: 22,196,434 km (0.118 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 394.3

Radius: 14.4

Gravity: 1.9 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 2.99 AU - 3.95 AU

Year: 4240 Days

Day: 6.7 Hours

Environment

Temp: -208 °C

Axial Tilt: 168.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 79,624,039 km

• M1: 182,360 km (0.114 R)
• M2: 712,385 km (0.025 R)
• M3: 1,194,838 km (0.111 R)
• M4: 1,844,991 km (0.075 R)
• M5: 2,632,773 km (0.11 R)
• M6: 3,105,951 km (0.083 R)
• M7: 5,841,797 km (0.078 R)
• M8: 6,310,337 km (0.039 R)
• M9: 7,292,447 km (0.063 R)
• M10: 8,203,648 km (0.076 R)
• M11: 8,757,609 km (0.04 R)
• M12: 9,299,752 km (0.114 R)
• M13: 10,411,413 km (0.072 R)
• M14: 13,270,528 km (0.109 R)
• M15: 14,429,313 km (0.108 R)
• M16: 19,381,451 km (0.1 R)
• M17: 21,776,364 km (0.062 R)

Asteroid Belt

Center: 6.39 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 9 - Ice Giant

Semi-Major Axis: 9.3 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 907.1

Radius: 6.1

Gravity: 24.38 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 8.08 AU - 10.52 AU

Year: 18605 Days

Day: 21.3 Hours

Environment

Temp: -233 °C

Axial Tilt: 31.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 79,624,039 km

• M1: 75,846 km (0.111 R)
• M2: 459,864 km (0.101 R)
• M3: 656,735 km (0.074 R)
• M4: 934,538 km (0.111 R)
• M5: 1,245,701 km (0.068 R)
• M6: 2,097,362 km (0.068 R)
• M7: 3,230,117 km (0.054 R)
• M8: 3,912,284 km (0.097 R)
• M9: 4,138,027 km (0.087 R)
• M10: 7,421,700 km (0.047 R)
• M11: 8,177,618 km (0.065 R)
• M12: 11,068,447 km (0.107 R)
• M13: 11,652,627 km (0.057 R)
• M14: 16,663,856 km (0.097 R)
• M15: 18,489,250 km (0.074 R)
• M16: 19,590,140 km (0.099 R)
• M17: 22,841,800 km (0.058 R)
• M18: 23,787,408 km (0.083 R)
• M19: 24,649,540 km (0.078 R)
• M20: 25,309,716 km (0.094 R)
• M21: 27,713,155 km (0.079 R)
• M22: 28,667,440 km (0.101 R)
• M23: 30,015,167 km (0.117 R)
• M24: 30,894,503 km (0.117 R)
• M25: 31,920,296 km (0.114 R)
• M26: 36,392,225 km (0.042 R)
• M27: 36,818,430 km (0.08 R)
• M28: 41,883,065 km (0.112 R)
• M29: 42,665,014 km (0.038 R)
• M30: 43,297,513 km (0.12 R)
• M31: 45,232,412 km (0.05 R)
• M32: 46,721,061 km (0.108 R)
• M33: 50,496,612 km (0.093 R)
• M34: 51,739,321 km (0.06 R)
• M35: 52,098,206 km (0.118 R)
• M36: 55,402,075 km (0.039 R)
• M37: 58,066,414 km (0.118 R)
• M38: 61,817,281 km (0.087 R)
• M39: 72,902,034 km (0.08 R)
• M40: 79,624,065 km (0.113 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 395 - 10,657 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit