🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.29

Radius: 1.79

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 0.56 AU - 0.58 AU

Year: 278 Days

Day: 45.5 Hours

Environment

Temp: -122 °C

Axial Tilt: 41.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.3

Radius: 1.79

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 0.55 AU - 0.71 AU

Year: 323 Days

Day: 36.3 Hours

Environment

Temp: -130 °C

Axial Tilt: 28.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.19

Radius: 0.51

Gravity: 0.73 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 0.65 AU - 0.69 AU

Year: 354 Days

Day: 31.2 Hours

Environment

Temp: -135 °C

Axial Tilt: 38.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 666.4

Radius: 14.9

Gravity: 3 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 0.61 AU - 0.79 AU

Year: 378 Days

Day: 9.4 Hours

Environment

Temp: -143 °C

Axial Tilt: 0.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 14,908,421 km

• M1: 185,352 km (0.09 R)
• M2: 827,127 km (0.063 R)
• M3: 1,392,756 km (0.039 R)
• M4: 2,244,716 km (0.107 R)
• M5: 2,869,886 km (0.106 R)
• M6: 3,645,850 km (0.072 R)
• M7: 5,136,892 km (0.11 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 454.1

Radius: 12.8

Gravity: 2.77 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 0.81 AU - 1.03 AU

Year: 570 Days

Day: 7.6 Hours

Environment

Temp: -164 °C

Axial Tilt: 38.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 14,908,421 km

• M1: 174,730 km (0.111 R)
• M2: 648,656 km (0.056 R)
• M3: 1,908,420 km (0.096 R)
• M4: 2,466,270 km (0.081 R)
• M5: 3,064,662 km (0.12 R)
• M6: 4,409,696 km (0.117 R)
• M7: 4,993,278 km (0.071 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 727.1

Radius: 12.2

Gravity: 4.89 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 1.59 AU - 1.91 AU

Year: 1495 Days

Day: 13.9 Hours

Environment

Temp: -193 °C

Axial Tilt: 12.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 14,908,421 km

• M1: 153,188 km (0.057 R)
• M2: 847,173 km (0.08 R)
• M3: 1,401,134 km (0.075 R)
• M4: 1,843,943 km (0.082 R)
• M5: 2,442,484 km (0.081 R)
• M6: 3,429,232 km (0.07 R)
• M7: 3,840,477 km (0.089 R)
• M8: 4,944,509 km (0.085 R)
• M9: 7,099,017 km (0.028 R)
• M10: 9,244,700 km (0.083 R)
• M11: 9,656,543 km (0.095 R)
• M12: 10,080,503 km (0.116 R)
• M13: 11,500,336 km (0.114 R)
• M14: 12,620,675 km (0.078 R)
• M15: 13,487,594 km (0.069 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 354.9

Radius: 13.9

Gravity: 1.84 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 1.85 AU - 1.91 AU

Year: 1664 Days

Day: 6.2 Hours

Environment

Temp: -178 °C

Axial Tilt: 48 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 14,908,421 km

• M1: 172,935 km (0.076 R)
• M2: 758,910 km (0.114 R)
• M3: 1,506,451 km (0.073 R)
• M4: 2,639,206 km (0.088 R)
• M5: 3,562,823 km (0.074 R)
• M6: 4,860,884 km (0.074 R)
• M7: 7,023,321 km (0.091 R)
• M8: 8,019,942 km (0.065 R)
• M9: 9,704,414 km (0.101 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 797.8

Radius: 8.2

Gravity: 11.86 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 1.83 AU - 2.37 AU

Year: 1965 Days

Day: 6.8 Hours

Environment

Temp: -184 °C

Axial Tilt: 3.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 14,908,421 km

• M1: 109,655 km (0.105 R)
• M2: 592,258 km (0.092 R)
• M3: 1,017,116 km (0.115 R)
• M4: 1,635,703 km (0.117 R)
• M5: 2,107,535 km (0.087 R)
• M6: 2,484,372 km (0.116 R)
• M7: 2,799,575 km (0.113 R)
• M8: 3,157,861 km (0.099 R)
• M9: 3,494,008 km (0.031 R)
• M10: 3,835,390 km (0.113 R)
• M11: 4,627,361 km (0.05 R)
• M12: 5,017,513 km (0.089 R)
• M13: 6,693,158 km (0.114 R)
• M14: 8,329,310 km (0.102 R)
• M15: 8,679,519 km (0.115 R)
• M16: 9,006,540 km (0.117 R)
• M17: 9,615,702 km (0.054 R)
• M18: 13,468,147 km (0.083 R)

Planet 9 - Gas Giant

Semi-Major Axis: 2.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 445.8

Radius: 13.8

Gravity: 2.34 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 2.1 AU - 2.36 AU

Year: 2150 Days

Day: 10 Hours

Environment

Temp: -201 °C

Axial Tilt: 18.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 14,908,421 km

• M1: 171,589 km (0.039 R)
• M2: 610,659 km (0.091 R)
• M3: 1,129,015 km (0.109 R)
• M4: 1,741,020 km (0.051 R)
• M5: 2,279,872 km (0.078 R)
• M6: 2,872,130 km (0.115 R)
• M7: 3,307,310 km (0.11 R)
• M8: 3,980,650 km (0.083 R)
• M9: 4,525,036 km (0.115 R)
• M10: 5,118,790 km (0.045 R)
• M11: 6,821,065 km (0.083 R)
• M12: 7,273,149 km (0.116 R)
• M13: 7,745,131 km (0.103 R)
• M14: 10,386,431 km (0.114 R)
• M15: 11,167,331 km (0.117 R)
• M16: 11,722,040 km (0.054 R)
• M17: 12,372,791 km (0.115 R)
• M18: 12,806,625 km (0.102 R)
• M19: 13,914,846 km (0.116 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: 240 - 18,476 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit