🌌 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: 2.96

Radius: 1.54

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 0.48 AU - 0.58 AU

Year: 253 Days

Day: 24.4 Hours

Environment

Temp: -126 °C

Axial Tilt: 15 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.52

Radius: 1.18

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 0.54 AU - 0.66 AU

Year: 305 Days

Day: 40.6 Hours

Environment

Temp: -134 °C

Axial Tilt: 34.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 18

Radius: 12.5

Gravity: 0.12 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 0.7 AU - 0.84 AU

Year: 443 Days

Day: 7.4 Hours

Environment

Temp: -153 °C

Axial Tilt: 37.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (3)

Outer Limit: 46,806,559 km

• M1: 157,227 km (0.085 R)
• M2: 763,548 km (0.119 R)
• M3: 1,420,133 km (0.118 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 73.9

Radius: 14.4

Gravity: 0.36 G

Time & Orbit

Eccentricity (e): 0.052

Orbit Range: 0.81 AU - 0.89 AU

Year: 514 Days

Day: 5.4 Hours

Environment

Temp: -142 °C

Axial Tilt: 19.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 46,806,559 km

• M1: 179,069 km (0.106 R)
• M2: 650,302 km (0.072 R)
• M3: 1,275,920 km (0.102 R)
• M4: 1,766,452 km (0.101 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 253.1

Radius: 12.3

Gravity: 1.67 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 0.87 AU - 0.93 AU

Year: 560 Days

Day: 13.6 Hours

Environment

Temp: -157 °C

Axial Tilt: 18.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 46,806,559 km

• M1: 153,039 km (0.043 R)
• M2: 631,303 km (0.113 R)
• M3: 1,223,411 km (0.12 R)
• M4: 1,885,681 km (0.109 R)
• M5: 2,671,519 km (0.112 R)
• M6: 3,247,471 km (0.111 R)
• M7: 3,832,099 km (0.096 R)
• M8: 4,312,458 km (0.073 R)

Planet 6 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 213.4

Radius: 11.7

Gravity: 1.56 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 0.81 AU - 1.07 AU

Year: 598 Days

Day: 5.5 Hours

Environment

Temp: -158 °C

Axial Tilt: 20.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 46,806,559 km

• M1: 150,645 km (0.075 R)
• M2: 515,664 km (0.044 R)
• M3: 987,944 km (0.102 R)
• M4: 1,451,698 km (0.108 R)
• M5: 2,460,586 km (0.114 R)
• M6: 2,922,993 km (0.114 R)
• M7: 3,354,283 km (0.073 R)
• M8: 3,815,793 km (0.06 R)
• M9: 4,425,703 km (0.094 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.32 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 991.3

Radius: 14.6

Gravity: 4.65 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 1.08 AU - 1.56 AU

Year: 995 Days

Day: 7.3 Hours

Environment

Temp: -168 °C

Axial Tilt: 43.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 46,806,559 km

• M1: 181,612 km (0.069 R)
• M2: 707,299 km (0.109 R)
• M3: 1,225,805 km (0.04 R)
• M4: 2,046,798 km (0.086 R)
• M5: 2,731,807 km (0.05 R)
• M6: 3,270,808 km (0.119 R)
• M7: 4,028,521 km (0.101 R)
• M8: 4,768,881 km (0.103 R)
• M9: 5,917,643 km (0.056 R)
• M10: 6,476,840 km (0.053 R)
• M11: 6,949,270 km (0.084 R)
• M12: 7,623,956 km (0.101 R)
• M13: 9,075,654 km (0.119 R)
• M14: 9,760,363 km (0.087 R)
• M15: 10,447,317 km (0.112 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 984.8

Radius: 13.4

Gravity: 5.48 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 2.4 AU - 3.24 AU

Year: 3107 Days

Day: 13.9 Hours

Environment

Temp: -192 °C

Axial Tilt: 9.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 46,806,559 km

• M1: 166,652 km (0.104 R)
• M2: 604,824 km (0.114 R)
• M3: 1,508,545 km (0.068 R)
• M4: 1,966,763 km (0.081 R)
• M5: 2,613,026 km (0.08 R)
• M6: 3,284,720 km (0.108 R)
• M7: 4,518,454 km (0.06 R)
• M8: 5,050,723 km (0.053 R)
• M9: 6,069,485 km (0.053 R)
• M10: 10,033,679 km (0.103 R)
• M11: 11,463,236 km (0.108 R)
• M12: 15,197,049 km (0.115 R)
• M13: 16,285,673 km (0.087 R)
• M14: 18,255,129 km (0.105 R)
• M15: 20,184,941 km (0.035 R)
• M16: 21,232,575 km (0.103 R)
• M17: 24,593,441 km (0.03 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.17 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 402.1

Radius: 5.7

Gravity: 12.38 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 6.71 AU - 7.63 AU

Year: 12595 Days

Day: 15.3 Hours

Environment

Temp: -226 °C

Axial Tilt: 38.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 46,806,559 km

• M1: 77,043 km (0.084 R)
• M2: 406,906 km (0.078 R)
• M3: 701,016 km (0.063 R)
• M4: 921,074 km (0.087 R)
• M5: 1,107,922 km (0.105 R)
• M6: 1,956,890 km (0.117 R)
• M7: 2,287,950 km (0.048 R)
• M8: 3,245,077 km (0.041 R)
• M9: 4,052,008 km (0.072 R)
• M10: 4,502,298 km (0.108 R)
• M11: 7,678,111 km (0.05 R)
• M12: 7,889,044 km (0.071 R)
• M13: 9,915,496 km (0.033 R)
• M14: 11,980,994 km (0.094 R)
• M15: 12,787,626 km (0.048 R)
• M16: 13,144,118 km (0.101 R)
• M17: 13,629,712 km (0.074 R)
• M18: 14,316,965 km (0.069 R)
• M19: 14,766,058 km (0.079 R)
• M20: 16,727,585 km (0.056 R)
• M21: 17,587,623 km (0.076 R)
• M22: 21,657,583 km (0.105 R)
• M23: 23,288,798 km (0.088 R)
• M24: 27,181,933 km (0.051 R)
• M25: 32,246,719 km (0.118 R)
• M26: 35,289,539 km (0.074 R)
• M27: 35,639,000 km (0.115 R)
• M28: 40,649,182 km (0.077 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: 492 - 19,285 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit