🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.61

Radius: 1.67

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 0.5 AU - 0.56 AU

Year: 253 Days

Day: 19.5 Hours

Environment

Temp: -119 °C

Axial Tilt: 9.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 41,710,932 km

• M1: 53,556 km (0.086 R)
• M2: 265,237 km (0.091 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.89

Radius: 1.89

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.079

Orbit Range: 0.62 AU - 0.72 AU

Year: 360 Days

Day: 33.3 Hours

Environment

Temp: -126 °C

Axial Tilt: 36 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 371.3

Radius: 13

Gravity: 2.2 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 0.84 AU - 0.88 AU

Year: 523 Days

Day: 11.6 Hours

Environment

Temp: -155 °C

Axial Tilt: 45.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 41,710,932 km

• M1: 161,715 km (0.057 R)
• M2: 574,755 km (0.076 R)
• M3: 1,020,557 km (0.11 R)
• M4: 1,638,845 km (0.085 R)
• M5: 2,364,245 km (0.114 R)
• M6: 3,108,345 km (0.059 R)
• M7: 4,347,015 km (0.109 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 711.7

Radius: 13.4

Gravity: 3.96 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 1.21 AU - 1.25 AU

Year: 895 Days

Day: 10.2 Hours

Environment

Temp: -170 °C

Axial Tilt: 35.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 41,710,932 km

• M1: 166,951 km (0.091 R)
• M2: 678,127 km (0.106 R)
• M3: 1,176,886 km (0.071 R)
• M4: 1,879,248 km (0.095 R)
• M5: 2,553,636 km (0.077 R)
• M6: 3,012,153 km (0.097 R)
• M7: 3,511,660 km (0.117 R)
• M8: 4,291,365 km (0.069 R)
• M9: 4,855,498 km (0.104 R)
• M10: 5,926,320 km (0.08 R)
• M11: 6,672,065 km (0.064 R)
• M12: 7,431,723 km (0.072 R)
• M13: 7,944,694 km (0.088 R)
• M14: 8,691,935 km (0.089 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 368.3

Radius: 8.2

Gravity: 5.48 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 1.65 AU - 1.83 AU

Year: 1506 Days

Day: 13.5 Hours

Environment

Temp: -192 °C

Axial Tilt: 3.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 41,710,932 km

• M1: 102,026 km (0.044 R)
• M2: 415,134 km (0.087 R)
• M3: 817,253 km (0.119 R)
• M4: 1,222,215 km (0.119 R)
• M5: 1,861,446 km (0.114 R)
• M6: 2,450,862 km (0.079 R)
• M7: 3,359,819 km (0.115 R)
• M8: 3,692,375 km (0.077 R)
• M9: 3,980,799 km (0.059 R)
• M10: 4,602,977 km (0.082 R)
• M11: 4,880,780 km (0.061 R)
• M12: 5,368,768 km (0.085 R)
• M13: 5,824,593 km (0.115 R)
• M14: 6,283,709 km (0.066 R)
• M15: 8,310,910 km (0.115 R)
• M16: 10,294,428 km (0.089 R)
• M17: 10,900,598 km (0.03 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 454.1

Radius: 8

Gravity: 7.1 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 1.73 AU - 1.93 AU

Year: 1624 Days

Day: 12.7 Hours

Environment

Temp: -180 °C

Axial Tilt: 23.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 41,710,932 km

• M1: 99,632 km (0.11 R)
• M2: 597,494 km (0.09 R)
• M3: 1,108,371 km (0.074 R)
• M4: 1,542,504 km (0.103 R)
• M5: 1,947,166 km (0.058 R)
• M6: 2,470,160 km (0.1 R)
• M7: 2,725,374 km (0.086 R)
• M8: 3,083,661 km (0.078 R)
• M9: 3,380,313 km (0.113 R)
• M10: 4,083,573 km (0.088 R)
• M11: 4,940,021 km (0.107 R)
• M12: 5,305,937 km (0.11 R)
• M13: 6,633,918 km (0.09 R)
• M14: 8,452,429 km (0.032 R)
• M15: 9,338,348 km (0.102 R)
• M16: 11,018,182 km (0.06 R)
• M17: 12,110,396 km (0.033 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 660.9

Radius: 8.9

Gravity: 8.34 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 4.46 AU - 4.6 AU

Year: 6325 Days

Day: 14.7 Hours

Environment

Temp: -204 °C

Axial Tilt: 23.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 41,710,932 km

• M1: 111,151 km (0.11 R)
• M2: 579,692 km (0.029 R)
• M3: 1,097,749 km (0.095 R)
• M4: 1,680,283 km (0.12 R)
• M5: 2,421,690 km (0.051 R)
• M6: 3,431,027 km (0.082 R)
• M7: 3,722,593 km (0.091 R)
• M8: 4,862,529 km (0.045 R)
• M9: 5,408,113 km (0.087 R)
• M10: 7,700,401 km (0.067 R)
• M11: 8,282,037 km (0.089 R)
• M12: 8,892,696 km (0.116 R)
• M13: 10,762,370 km (0.119 R)
• M14: 12,197,313 km (0.114 R)
• M15: 14,904,885 km (0.117 R)
• M16: 23,818,375 km (0.118 R)
• M17: 24,801,382 km (0.091 R)
• M18: 26,848,479 km (0.109 R)
• M19: 32,553,843 km (0.03 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 324

Radius: 12.6

Gravity: 2.04 G

Time & Orbit

Eccentricity (e): 0.204

Orbit Range: 3.64 AU - 5.5 AU

Year: 6409 Days

Day: 10 Hours

Environment

Temp: -216 °C

Axial Tilt: 34.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 41,710,932 km

• M1: 157,227 km (0.097 R)
• M2: 822,938 km (0.119 R)
• M3: 1,270,684 km (0.097 R)
• M4: 2,572,934 km (0.103 R)
• M5: 3,927,243 km (0.059 R)
• M6: 9,747,348 km (0.044 R)
• M7: 10,939,643 km (0.077 R)
• M8: 12,274,505 km (0.033 R)
• M9: 12,710,134 km (0.096 R)
• M10: 16,227,629 km (0.071 R)
• M11: 17,049,669 km (0.027 R)
• M12: 18,209,352 km (0.107 R)
• M13: 19,355,870 km (0.11 R)
• M14: 25,506,886 km (0.089 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.54 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 137.3

Radius: 7.3

Gravity: 2.58 G

Time & Orbit

Eccentricity (e): 0.158

Orbit Range: 8.03 AU - 11.05 AU

Year: 19330 Days

Day: 20.4 Hours

Environment

Temp: -234 °C

Axial Tilt: 26.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 41,710,932 km

• M1: 93,349 km (0.109 R)
• M2: 428,000 km (0.086 R)
• M3: 5,455,685 km (0.05 R)
• M4: 11,424,640 km (0.056 R)
• M5: 18,489,848 km (0.107 R)
• M6: 19,009,102 km (0.075 R)
• M7: 21,752,578 km (0.111 R)
• M8: 30,610,417 km (0.115 R)
• M9: 33,149,542 km (0.045 R)
• M10: 37,451,528 km (0.091 R)
• M11: 42,239,108 km (0.039 R)

Planet 10 - Ice Giant

Semi-Major Axis: 9.81 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 111.1

Radius: 6.4

Gravity: 2.71 G

Time & Orbit

Eccentricity (e): 0.226

Orbit Range: 7.59 AU - 12.03 AU

Year: 20156 Days

Day: 17.4 Hours

Environment

Temp: -224 °C

Axial Tilt: 11.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 41,710,932 km

• M1: 88,562 km (0.098 R)
• M2: 351,854 km (0.058 R)
• M3: 786,286 km (0.062 R)
• M4: 2,664,936 km (0.097 R)
• M5: 3,163,995 km (0.111 R)
• M6: 3,748,175 km (0.111 R)
• M7: 3,975,264 km (0.027 R)
• M8: 7,351,688 km (0.114 R)
• M9: 10,891,024 km (0.114 R)
• M10: 12,102,917 km (0.059 R)
• M11: 12,433,378 km (0.092 R)
• M12: 19,759,934 km (0.096 R)
• M13: 30,937,438 km (0.032 R)
• M14: 36,226,022 km (0.112 R)
• M15: 38,075,351 km (0.077 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: 293 - 16,670 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit