🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.71

Radius: 0.87

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.22

Orbit Range: 0.48 AU - 0.76 AU

Year: 310 Days

Day: 27.6 Hours

Environment

Temp: -120 °C

Axial Tilt: 2.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 88,197,444 km

• M1: 21,392 km (0.089 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 875.1

Radius: 13.5

Gravity: 4.8 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 0.67 AU - 0.75 AU

Year: 380 Days

Day: 11.1 Hours

Environment

Temp: -146 °C

Axial Tilt: 48.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 88,197,444 km

• M1: 167,998 km (0.071 R)
• M2: 832,063 km (0.088 R)
• M3: 1,477,877 km (0.064 R)
• M4: 1,925,474 km (0.05 R)
• M5: 2,540,471 km (0.025 R)
• M6: 3,149,035 km (0.097 R)
• M7: 4,062,330 km (0.102 R)
• M8: 4,809,123 km (0.071 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 544.2

Radius: 13.4

Gravity: 3.03 G

Time & Orbit

Eccentricity (e): 0.029

Orbit Range: 0.7 AU - 0.74 AU

Year: 388 Days

Day: 11.6 Hours

Environment

Temp: -137 °C

Axial Tilt: 7.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 88,197,444 km

• M1: 166,652 km (0.087 R)
• M2: 701,165 km (0.103 R)
• M3: 1,127,669 km (0.105 R)
• M4: 1,735,934 km (0.104 R)
• M5: 2,354,371 km (0.048 R)
• M6: 2,862,406 km (0.114 R)
• M7: 3,343,213 km (0.105 R)
• M8: 4,026,875 km (0.099 R)
• M9: 4,483,448 km (0.101 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 899.9

Radius: 9.5

Gravity: 9.97 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 0.71 AU - 0.95 AU

Year: 481 Days

Day: 5.5 Hours

Environment

Temp: -139 °C

Axial Tilt: 95.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 88,197,444 km

• M1: 118,182 km (0.07 R)
• M2: 447,148 km (0.098 R)
• M3: 891,753 km (0.11 R)
• M4: 1,198,578 km (0.052 R)
• M5: 1,533,827 km (0.097 R)
• M6: 1,848,730 km (0.097 R)
• M7: 2,254,141 km (0.038 R)
• M8: 2,654,315 km (0.106 R)
• M9: 3,196,757 km (0.082 R)
• M10: 3,771,063 km (0.087 R)
• M11: 4,367,809 km (0.084 R)
• M12: 5,192,243 km (0.093 R)
• M13: 5,606,330 km (0.056 R)
• M14: 5,949,657 km (0.104 R)
• M15: 6,941,192 km (0.12 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 895.7

Radius: 14.1

Gravity: 4.51 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 1.31 AU - 1.31 AU

Year: 953 Days

Day: 14 Hours

Environment

Temp: -169 °C

Axial Tilt: 163.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 88,197,444 km

• M1: 175,329 km (0.108 R)
• M2: 742,903 km (0.068 R)
• M3: 1,314,367 km (0.118 R)
• M4: 1,927,269 km (0.109 R)
• M5: 2,918,206 km (0.097 R)
• M6: 3,946,691 km (0.091 R)
• M7: 4,519,052 km (0.069 R)
• M8: 5,050,873 km (0.064 R)
• M9: 5,790,036 km (0.109 R)
• M10: 6,263,064 km (0.092 R)
• M11: 6,785,161 km (0.098 R)
• M12: 7,917,467 km (0.069 R)
• M13: 8,666,205 km (0.042 R)
• M14: 9,114,849 km (0.065 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 370.4

Radius: 11.1

Gravity: 3.01 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 1.7 AU - 2.8 AU

Year: 2146 Days

Day: 8.8 Hours

Environment

Temp: -186 °C

Axial Tilt: 135.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 88,197,444 km

• M1: 139,874 km (0.12 R)
• M2: 649,853 km (0.028 R)
• M3: 998,715 km (0.072 R)
• M4: 1,409,362 km (0.109 R)
• M5: 1,758,523 km (0.116 R)
• M6: 2,884,247 km (0.083 R)
• M7: 3,237,597 km (0.112 R)
• M8: 3,636,575 km (0.106 R)
• M9: 4,014,758 km (0.056 R)
• M10: 4,730,434 km (0.072 R)
• M11: 6,031,637 km (0.115 R)
• M12: 6,589,188 km (0.054 R)
• M13: 7,313,840 km (0.081 R)
• M14: 7,863,612 km (0.118 R)
• M15: 9,358,843 km (0.058 R)
• M16: 9,842,343 km (0.097 R)
• M17: 11,539,082 km (0.061 R)
• M18: 12,020,339 km (0.095 R)
• M19: 12,708,489 km (0.107 R)
• M20: 13,872,510 km (0.098 R)

Planet 7 - Ice Giant

Semi-Major Axis: 10.94 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 424.1

Radius: 5.6

Gravity: 13.52 G

Time & Orbit

Eccentricity (e): 0.22

Orbit Range: 8.53 AU - 13.35 AU

Year: 23007 Days

Day: 20.3 Hours

Environment

Temp: -224 °C

Axial Tilt: 34.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 88,197,444 km

• M1: 69,713 km (0.032 R)
• M2: 273,315 km (0.03 R)
• M3: 1,040,603 km (0.087 R)
• M4: 1,262,905 km (0.113 R)
• M5: 1,698,983 km (0.104 R)
• M6: 2,107,684 km (0.081 R)
• M7: 3,443,743 km (0.12 R)
• M8: 4,690,492 km (0.078 R)
• M9: 5,190,298 km (0.076 R)
• M10: 5,568,482 km (0.087 R)
• M11: 6,947,924 km (0.114 R)
• M12: 7,129,236 km (0.049 R)
• M13: 7,454,312 km (0.073 R)
• M14: 8,034,602 km (0.073 R)
• M15: 8,644,363 km (0.086 R)
• M16: 9,230,039 km (0.045 R)
• M17: 9,955,888 km (0.108 R)
• M18: 10,900,598 km (0.095 R)
• M19: 12,229,177 km (0.113 R)
• M20: 16,214,315 km (0.113 R)
• M21: 17,021,395 km (0.114 R)
• M22: 18,628,226 km (0.087 R)
• M23: 18,978,883 km (0.06 R)
• M24: 24,993,017 km (0.109 R)
• M25: 27,739,634 km (0.045 R)
• M26: 28,659,362 km (0.045 R)
• M27: 33,050,658 km (0.109 R)
• M28: 39,001,062 km (0.115 R)
• M29: 39,431,007 km (0.113 R)
• M30: 39,864,093 km (0.071 R)
• M31: 40,592,933 km (0.06 R)
• M32: 43,751,094 km (0.119 R)
• M33: 47,069,324 km (0.107 R)
• M34: 52,790,994 km (0.069 R)
• M35: 65,792,695 km (0.086 R)
• M36: 67,014,760 km (0.115 R)

Planet 8 - Ice Giant

Semi-Major Axis: 11.32 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 727.7

Radius: 6.1

Gravity: 19.56 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 8.94 AU - 13.7 AU

Year: 24216 Days

Day: 18.7 Hours

Environment

Temp: -233 °C

Axial Tilt: 47.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 88,197,444 km

• M1: 77,641 km (0.115 R)
• M2: 287,826 km (0.04 R)
• M3: 780,901 km (0.043 R)
• M4: 1,134,101 km (0.1 R)
• M5: 1,324,689 km (0.054 R)
• M6: 1,536,969 km (0.114 R)
• M7: 1,948,811 km (0.055 R)
• M8: 2,225,119 km (0.067 R)
• M9: 2,752,302 km (0.041 R)
• M10: 3,128,989 km (0.102 R)
• M11: 4,153,136 km (0.071 R)
• M12: 5,548,136 km (0.105 R)
• M13: 6,016,976 km (0.1 R)
• M14: 9,821,399 km (0.083 R)
• M15: 11,357,470 km (0.107 R)
• M16: 12,538,097 km (0.047 R)
• M17: 14,577,714 km (0.059 R)
• M18: 14,817,220 km (0.065 R)
• M19: 20,275,149 km (0.08 R)
• M20: 21,077,742 km (0.082 R)
• M21: 24,276,294 km (0.07 R)
• M22: 24,839,081 km (0.081 R)
• M23: 27,906,585 km (0.107 R)
• M24: 28,275,942 km (0.064 R)
• M25: 31,085,540 km (0.055 R)
• M26: 35,496,134 km (0.087 R)
• M27: 38,302,889 km (0.083 R)
• M28: 39,682,630 km (0.104 R)
• M29: 50,462,653 km (0.101 R)
• M30: 55,154,192 km (0.081 R)
• M31: 56,321,803 km (0.079 R)
• M32: 62,829,161 km (0.116 R)
• M33: 76,347,124 km (0.104 R)
• M34: 84,805,238 km (0.107 R)
• M35: 87,933,329 km (0.104 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: 290 - 17,099 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit