🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.52

Radius: 1.45

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.014

Orbit Range: 0.51 AU - 0.53 AU

Year: 242 Days

Day: 45.4 Hours

Environment

Temp: -123 °C

Axial Tilt: 25.2 °

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: 3.26

Radius: 1.6

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.009

Orbit Range: 0.59 AU - 0.61 AU

Year: 300 Days

Day: 27.6 Hours

Environment

Temp: -128 °C

Axial Tilt: 21.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 42,893,253 km

• M1: 71,358 km (0.113 R)
• M2: 597,793 km (0.04 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 399

Radius: 13.7

Gravity: 2.13 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 1.01 AU - 1.07 AU

Year: 685 Days

Day: 6.7 Hours

Environment

Temp: -167 °C

Axial Tilt: 31.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 42,893,253 km

• M1: 170,392 km (0.054 R)
• M2: 668,104 km (0.108 R)
• M3: 1,239,119 km (0.107 R)
• M4: 1,803,253 km (0.09 R)
• M5: 2,241,874 km (0.09 R)
• M6: 2,721,185 km (0.062 R)
• M7: 4,575,152 km (0.073 R)
• M8: 5,490,990 km (0.117 R)
• M9: 5,965,813 km (0.118 R)
• M10: 6,468,163 km (0.095 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 696.9

Radius: 10.2

Gravity: 6.7 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 1.53 AU - 2.17 AU

Year: 1625 Days

Day: 11.8 Hours

Environment

Temp: -194 °C

Axial Tilt: 42.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 42,893,253 km

• M1: 127,308 km (0.118 R)
• M2: 606,320 km (0.089 R)
• M3: 1,051,075 km (0.117 R)
• M4: 1,380,639 km (0.075 R)
• M5: 2,468,215 km (0.113 R)
• M6: 5,752,936 km (0.072 R)
• M7: 6,372,271 km (0.058 R)
• M8: 6,852,480 km (0.115 R)
• M9: 9,303,043 km (0.107 R)
• M10: 11,169,276 km (0.108 R)
• M11: 12,286,473 km (0.103 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.29 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 912.7

Radius: 11.7

Gravity: 6.67 G

Time & Orbit

Eccentricity (e): 0.029

Orbit Range: 2.22 AU - 2.36 AU

Year: 2238 Days

Day: 5.3 Hours

Environment

Temp: -200 °C

Axial Tilt: 31.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 42,893,253 km

• M1: 145,559 km (0.12 R)
• M2: 555,606 km (0.117 R)
• M3: 1,030,729 km (0.083 R)
• M4: 1,427,164 km (0.085 R)
• M5: 2,645,190 km (0.104 R)
• M6: 3,408,438 km (0.072 R)
• M7: 4,008,325 km (0.096 R)
• M8: 5,109,216 km (0.086 R)
• M9: 5,922,580 km (0.118 R)
• M10: 7,021,974 km (0.039 R)
• M11: 7,589,848 km (0.101 R)
• M12: 8,252,716 km (0.047 R)
• M13: 9,336,852 km (0.109 R)
• M14: 11,058,574 km (0.109 R)
• M15: 11,581,269 km (0.074 R)
• M16: 14,685,125 km (0.114 R)
• M17: 16,376,479 km (0.078 R)

Planet 6 - Ice Giant

Semi-Major Axis: 8.83 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 949.9

Radius: 4.3

Gravity: 51.37 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 6.9 AU - 10.76 AU

Year: 16942 Days

Day: 24 Hours

Environment

Temp: -228 °C

Axial Tilt: 28.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 42,893,253 km

• M1: 54,005 km (0.049 R)
• M2: 194,776 km (0.102 R)
• M3: 439,668 km (0.069 R)
• M4: 726,746 km (0.104 R)
• M5: 941,419 km (0.092 R)
• M6: 1,225,356 km (0.114 R)
• M7: 2,448,768 km (0.042 R)
• M8: 2,683,487 km (0.09 R)
• M9: 3,836,437 km (0.079 R)
• M10: 5,133,601 km (0.071 R)
• M11: 5,637,297 km (0.078 R)
• M12: 6,519,774 km (0.105 R)
• M13: 6,742,675 km (0.118 R)
• M14: 9,204,607 km (0.097 R)
• M15: 9,372,307 km (0.091 R)
• M16: 11,354,628 km (0.115 R)
• M17: 12,409,293 km (0.095 R)
• M18: 13,241,955 km (0.074 R)
• M19: 15,643,599 km (0.119 R)
• M20: 18,232,390 km (0.1 R)
• M21: 20,233,710 km (0.087 R)
• M22: 26,426,464 km (0.087 R)
• M23: 28,268,462 km (0.117 R)
• M24: 28,742,089 km (0.114 R)
• M25: 29,100,675 km (0.058 R)
• M26: 33,375,734 km (0.082 R)
• M27: 34,171,295 km (0.044 R)
• M28: 37,621,920 km (0.029 R)
• M29: 45,206,083 km (0.086 R)
• M30: 45,367,349 km (0.101 R)
• M31: 53,567,108 km (0.092 R)
• M32: 54,291,910 km (0.105 R)
• M33: 57,445,283 km (0.084 R)
• M34: 60,718,485 km (0.083 R)
• M35: 62,700,806 km (0.108 R)
• M36: 66,794,252 km (0.118 R)

Planet 7 - Ice Giant

Semi-Major Axis: 10.49 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 102

Radius: 6.7

Gravity: 2.27 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 10.26 AU - 10.72 AU

Year: 21937 Days

Day: 17.6 Hours

Environment

Temp: -233 °C

Axial Tilt: 4.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 42,893,253 km

• M1: 83,326 km (0.077 R)
• M2: 617,839 km (0.115 R)
• M3: 1,127,370 km (0.097 R)
• M4: 3,582,869 km (0.079 R)
• M5: 6,937,302 km (0.095 R)
• M6: 7,283,771 km (0.098 R)
• M7: 7,722,840 km (0.099 R)
• M8: 9,284,044 km (0.054 R)
• M9: 12,786,728 km (0.076 R)
• M10: 14,767,105 km (0.036 R)
• M11: 17,220,809 km (0.045 R)
• M12: 19,024,660 km (0.079 R)
• M13: 20,871,297 km (0.06 R)
• M14: 25,547,726 km (0.114 R)
• M15: 30,060,047 km (0.078 R)
• M16: 37,604,866 km (0.041 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: 449 - 11,524 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit