🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.3

Radius: 0.62

Gravity: 0.78 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 0.55 AU - 0.79 AU

Year: 354 Days

Day: 33.6 Hours

Environment

Temp: -128 °C

Axial Tilt: 3.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 838.6

Radius: 11.7

Gravity: 6.13 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 1.06 AU - 1.18 AU

Year: 765 Days

Day: 13.2 Hours

Environment

Temp: -160 °C

Axial Tilt: 37.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 45,448,063 km

• M1: 145,559 km (0.047 R)
• M2: 552,465 km (0.087 R)
• M3: 1,196,334 km (0.058 R)
• M4: 1,626,278 km (0.115 R)
• M5: 2,061,907 km (0.03 R)
• M6: 2,943,488 km (0.088 R)
• M7: 3,877,128 km (0.117 R)
• M8: 4,751,228 km (0.042 R)
• M9: 5,595,708 km (0.091 R)
• M10: 6,366,437 km (0.072 R)
• M11: 6,844,103 km (0.103 R)
• M12: 7,252,804 km (0.068 R)
• M13: 8,346,364 km (0.036 R)
• M14: 8,813,409 km (0.101 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 195.5

Radius: 10.4

Gravity: 1.81 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 0.99 AU - 1.37 AU

Year: 828 Days

Day: 9.4 Hours

Environment

Temp: -174 °C

Axial Tilt: 37.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 45,448,063 km

• M1: 129,851 km (0.109 R)
• M2: 474,524 km (0.047 R)
• M3: 987,645 km (0.112 R)
• M4: 1,513,482 km (0.11 R)
• M5: 1,916,798 km (0.11 R)
• M6: 2,364,095 km (0.115 R)
• M7: 4,139,223 km (0.095 R)
• M8: 4,592,206 km (0.09 R)
• M9: 5,464,810 km (0.101 R)
• M10: 5,888,471 km (0.065 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 226

Radius: 11.1

Gravity: 1.83 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 1.3 AU - 1.8 AU

Year: 1246 Days

Day: 14.2 Hours

Environment

Temp: -169 °C

Axial Tilt: 12.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 45,448,063 km

• M1: 138,079 km (0.104 R)
• M2: 752,926 km (0.059 R)
• M3: 1,424,471 km (0.119 R)
• M4: 2,692,612 km (0.051 R)
• M5: 3,208,575 km (0.1 R)
• M6: 4,128,602 km (0.119 R)
• M7: 4,936,281 km (0.089 R)
• M8: 5,543,648 km (0.098 R)
• M9: 6,929,373 km (0.082 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 709.1

Radius: 9.7

Gravity: 7.54 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 2.34 AU - 2.56 AU

Year: 2476 Days

Day: 9.9 Hours

Environment

Temp: -196 °C

Axial Tilt: 48.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 45,448,063 km

• M1: 121,025 km (0.089 R)
• M2: 725,849 km (0.111 R)
• M3: 1,256,323 km (0.076 R)
• M4: 2,030,941 km (0.084 R)
• M5: 2,655,661 km (0.042 R)
• M6: 3,751,466 km (0.053 R)
• M7: 4,626,763 km (0.11 R)
• M8: 5,911,958 km (0.037 R)
• M9: 6,609,384 km (0.105 R)
• M10: 7,511,608 km (0.105 R)
• M11: 8,040,138 km (0.074 R)
• M12: 9,067,576 km (0.079 R)
• M13: 11,141,900 km (0.059 R)
• M14: 12,289,615 km (0.102 R)
• M15: 13,067,972 km (0.097 R)
• M16: 14,532,386 km (0.076 R)
• M17: 15,206,324 km (0.06 R)
• M18: 16,154,176 km (0.104 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 720.5

Radius: 8.6

Gravity: 9.74 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 2.59 AU - 4.17 AU

Year: 4012 Days

Day: 8.1 Hours

Environment

Temp: -198 °C

Axial Tilt: 1.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 45,448,063 km

• M1: 107,710 km (0.079 R)
• M2: 555,307 km (0.031 R)
• M3: 856,298 km (0.092 R)
• M4: 1,154,148 km (0.081 R)
• M5: 1,661,584 km (0.105 R)
• M6: 3,027,861 km (0.111 R)
• M7: 4,083,573 km (0.108 R)
• M8: 5,101,736 km (0.109 R)
• M9: 9,480,167 km (0.049 R)
• M10: 9,842,194 km (0.105 R)
• M11: 13,935,939 km (0.029 R)
• M12: 19,360,657 km (0.104 R)
• M13: 20,075,286 km (0.074 R)
• M14: 20,740,099 km (0.039 R)
• M15: 22,537,368 km (0.065 R)
• M16: 24,062,818 km (0.071 R)
• M17: 24,964,893 km (0.091 R)
• M18: 26,518,018 km (0.051 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.12 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 261.6

Radius: 5.7

Gravity: 8.05 G

Time & Orbit

Eccentricity (e): 0.069

Orbit Range: 7.56 AU - 8.68 AU

Year: 14940 Days

Day: 22.9 Hours

Environment

Temp: -225 °C

Axial Tilt: 38.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 45,448,063 km

• M1: 71,957 km (0.109 R)
• M2: 659,727 km (0.081 R)
• M3: 850,165 km (0.095 R)
• M4: 1,166,115 km (0.111 R)
• M5: 1,746,555 km (0.063 R)
• M6: 3,107,746 km (0.11 R)
• M7: 3,408,887 km (0.068 R)
• M8: 4,545,531 km (0.112 R)
• M9: 6,980,685 km (0.058 R)
• M10: 7,295,888 km (0.11 R)
• M11: 7,912,531 km (0.061 R)
• M12: 8,298,792 km (0.07 R)
• M13: 9,343,135 km (0.101 R)
• M14: 10,269,595 km (0.102 R)
• M15: 10,729,309 km (0.107 R)
• M16: 12,078,083 km (0.12 R)
• M17: 19,137,906 km (0.043 R)
• M18: 20,867,856 km (0.105 R)
• M19: 23,391,273 km (0.116 R)
• M20: 24,365,304 km (0.084 R)
• M21: 25,273,962 km (0.076 R)
• M22: 25,550,868 km (0.109 R)
• M23: 32,276,489 km (0.115 R)
• M24: 38,730,889 km (0.101 R)
• M25: 41,229,772 km (0.088 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: 467 - 20,293 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit