🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.3

Radius: 1.79

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.202

Orbit Range: 0.47 AU - 0.71 AU

Year: 297 Days

Day: 20.8 Hours

Environment

Temp: -117 °C

Axial Tilt: 44 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 754.3

Radius: 14.9

Gravity: 3.4 G

Time & Orbit

Eccentricity (e): 0.101

Orbit Range: 0.77 AU - 0.95 AU

Year: 523 Days

Day: 9.8 Hours

Environment

Temp: -144 °C

Axial Tilt: 8.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 53,915,779 km

• M1: 185,352 km (0.058 R)
• M2: 876,045 km (0.091 R)
• M3: 1,520,662 km (0.072 R)
• M4: 2,044,405 km (0.09 R)
• M5: 2,806,755 km (0.103 R)
• M6: 3,495,205 km (0.062 R)
• M7: 4,207,889 km (0.097 R)
• M8: 4,730,733 km (0.06 R)
• M9: 5,398,538 km (0.114 R)
• M10: 6,354,618 km (0.038 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 543

Radius: 13.9

Gravity: 2.81 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 0.69 AU - 1.05 AU

Year: 532 Days

Day: 5 Hours

Environment

Temp: -161 °C

Axial Tilt: 9.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 53,915,779 km

• M1: 172,935 km (0.052 R)
• M2: 625,170 km (0.103 R)
• M3: 1,086,829 km (0.103 R)
• M4: 1,551,779 km (0.036 R)
• M5: 2,000,722 km (0.085 R)
• M6: 2,528,204 km (0.055 R)
• M7: 3,538,887 km (0.115 R)
• M8: 4,001,893 km (0.095 R)
• M9: 4,447,545 km (0.063 R)
• M10: 5,744,558 km (0.067 R)
• M11: 6,241,074 km (0.107 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 817

Radius: 10.9

Gravity: 6.88 G

Time & Orbit

Eccentricity (e): 0.204

Orbit Range: 0.88 AU - 1.32 AU

Year: 757 Days

Day: 13.9 Hours

Environment

Temp: -160 °C

Axial Tilt: 33.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 53,915,779 km

• M1: 138,528 km (0.107 R)
• M2: 646,861 km (0.031 R)
• M3: 1,007,691 km (0.105 R)
• M4: 1,700,629 km (0.083 R)
• M5: 2,344,049 km (0.071 R)
• M6: 3,104,455 km (0.068 R)
• M7: 4,553,011 km (0.106 R)
• M8: 5,003,600 km (0.118 R)
• M9: 5,464,960 km (0.033 R)
• M10: 7,720,597 km (0.089 R)
• M11: 8,186,893 km (0.077 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 355.2

Radius: 13.5

Gravity: 1.95 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 3.21 AU - 3.77 AU

Year: 4277 Days

Day: 6.9 Hours

Environment

Temp: -213 °C

Axial Tilt: 34.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 53,915,779 km

• M1: 167,849 km (0.117 R)
• M2: 833,111 km (0.12 R)
• M3: 1,587,682 km (0.088 R)
• M4: 2,197,742 km (0.097 R)
• M5: 3,679,509 km (0.052 R)
• M6: 5,287,986 km (0.105 R)
• M7: 6,898,855 km (0.06 R)
• M8: 7,544,819 km (0.096 R)
• M9: 8,781,245 km (0.056 R)
• M10: 9,319,499 km (0.082 R)
• M11: 12,348,556 km (0.101 R)
• M12: 14,158,990 km (0.066 R)
• M13: 15,512,102 km (0.049 R)
• M14: 18,884,338 km (0.026 R)
• M15: 19,661,499 km (0.044 R)
• M16: 20,150,384 km (0.099 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 865.8

Radius: 12.7

Gravity: 5.37 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 3.47 AU - 3.83 AU

Year: 4575 Days

Day: 13.9 Hours

Environment

Temp: -215 °C

Axial Tilt: 48 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 53,915,779 km

• M1: 157,975 km (0.108 R)
• M2: 808,576 km (0.079 R)
• M3: 1,772,136 km (0.025 R)
• M4: 2,236,937 km (0.09 R)
• M5: 3,397,218 km (0.114 R)
• M6: 4,007,278 km (0.109 R)
• M7: 4,537,004 km (0.108 R)
• M8: 5,533,625 km (0.082 R)
• M9: 6,380,948 km (0.062 R)
• M10: 8,144,856 km (0.097 R)
• M11: 9,323,388 km (0.045 R)
• M12: 9,782,953 km (0.036 R)
• M13: 13,648,412 km (0.069 R)
• M14: 15,135,864 km (0.103 R)
• M15: 16,007,571 km (0.085 R)
• M16: 17,408,854 km (0.039 R)
• M17: 17,851,215 km (0.115 R)
• M18: 18,758,376 km (0.053 R)
• M19: 19,156,456 km (0.073 R)
• M20: 22,922,433 km (0.09 R)
• M21: 23,377,659 km (0.071 R)
• M22: 27,409,920 km (0.067 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.27 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 400.5

Radius: 5.7

Gravity: 12.33 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 6.27 AU - 10.27 AU

Year: 15602 Days

Day: 15.9 Hours

Environment

Temp: -230 °C

Axial Tilt: 23.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 53,915,779 km

• M1: 71,209 km (0.118 R)
• M2: 260,001 km (0.08 R)
• M3: 514,766 km (0.088 R)
• M4: 806,033 km (0.083 R)
• M5: 1,554,023 km (0.102 R)
• M6: 1,953,599 km (0.111 R)
• M7: 2,541,369 km (0.091 R)
• M8: 2,956,054 km (0.067 R)
• M9: 3,516,896 km (0.095 R)
• M10: 3,836,437 km (0.115 R)
• M11: 4,880,032 km (0.071 R)
• M12: 5,243,854 km (0.075 R)
• M13: 6,882,549 km (0.07 R)
• M14: 7,382,805 km (0.041 R)
• M15: 7,685,740 km (0.083 R)
• M16: 8,931,890 km (0.112 R)
• M17: 9,375,747 km (0.083 R)
• M18: 10,254,036 km (0.084 R)
• M19: 11,876,725 km (0.037 R)
• M20: 12,172,779 km (0.078 R)
• M21: 13,663,222 km (0.078 R)
• M22: 16,410,886 km (0.109 R)
• M23: 18,460,676 km (0.069 R)
• M24: 19,670,175 km (0.104 R)
• M25: 20,084,711 km (0.066 R)
• M26: 20,590,053 km (0.1 R)
• M27: 24,557,238 km (0.099 R)
• M28: 25,231,925 km (0.115 R)
• M29: 25,427,000 km (0.049 R)
• M30: 26,618,548 km (0.108 R)
• M31: 28,686,289 km (0.109 R)
• M32: 31,871,078 km (0.105 R)
• M33: 33,607,461 km (0.096 R)
• M34: 38,415,088 km (0.107 R)
• M35: 39,323,745 km (0.107 R)
• M36: 42,410,697 km (0.084 R)
• M37: 42,824,934 km (0.07 R)
• M38: 44,651,075 km (0.099 R)
• M39: 46,528,379 km (0.117 R)
• M40: 50,439,615 km (0.096 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 517 - 19,257 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit