🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.35 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 911

Radius: 10.5

Gravity: 8.26 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 0.58 AU - 0.8 AU

Year: 403 Days

Day: 8.7 Hours

Environment

Temp: -151 °C

Axial Tilt: 48.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 40,180,761 km

• M1: 130,599 km (0.098 R)
• M2: 498,610 km (0.105 R)
• M3: 978,370 km (0.046 R)
• M4: 1,313,769 km (0.087 R)
• M5: 1,811,331 km (0.05 R)
• M6: 2,319,515 km (0.087 R)
• M7: 2,648,182 km (0.094 R)
• M8: 2,975,352 km (0.09 R)
• M9: 3,425,492 km (0.101 R)
• M10: 3,854,838 km (0.104 R)
• M11: 4,249,178 km (0.108 R)
• M12: 5,119,389 km (0.03 R)
• M13: 5,926,020 km (0.116 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 687.4

Radius: 12.7

Gravity: 4.26 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 0.62 AU - 0.8 AU

Year: 421 Days

Day: 11.6 Hours

Environment

Temp: -149 °C

Axial Tilt: 2.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 40,180,761 km

• M1: 158,873 km (0.101 R)
• M2: 696,677 km (0.119 R)
• M3: 1,187,059 km (0.103 R)
• M4: 1,617,153 km (0.072 R)
• M5: 2,161,390 km (0.066 R)
• M6: 3,191,521 km (0.097 R)
• M7: 3,811,604 km (0.063 R)
• M8: 4,757,661 km (0.087 R)
• M9: 5,326,133 km (0.072 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 671.7

Radius: 9.4

Gravity: 7.6 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 0.66 AU - 0.98 AU

Year: 522 Days

Day: 12.8 Hours

Environment

Temp: -170 °C

Axial Tilt: 23.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 40,180,761 km

• M1: 116,986 km (0.119 R)
• M2: 469,737 km (0.118 R)
• M3: 871,557 km (0.07 R)
• M4: 1,295,368 km (0.102 R)
• M5: 1,696,889 km (0.038 R)
• M6: 3,277,689 km (0.061 R)
• M7: 3,654,078 km (0.117 R)
• M8: 4,003,538 km (0.114 R)
• M9: 4,723,104 km (0.101 R)
• M10: 5,138,836 km (0.098 R)
• M11: 5,825,790 km (0.119 R)
• M12: 6,495,390 km (0.086 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 992.6

Radius: 13.7

Gravity: 5.29 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 1.14 AU - 1.64 AU

Year: 1152 Days

Day: 13.3 Hours

Environment

Temp: -194 °C

Axial Tilt: 31.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 40,180,761 km

• M1: 171,439 km (0.119 R)
• M2: 621,579 km (0.079 R)
• M3: 1,109,119 km (0.079 R)
• M4: 2,003,863 km (0.117 R)
• M5: 2,431,564 km (0.028 R)
• M6: 3,074,835 km (0.097 R)
• M7: 3,554,745 km (0.098 R)
• M8: 3,981,398 km (0.116 R)
• M9: 4,479,409 km (0.065 R)
• M10: 5,019,009 km (0.082 R)
• M11: 7,547,213 km (0.103 R)
• M12: 8,428,344 km (0.078 R)
• M13: 11,206,676 km (0.032 R)
• M14: 11,914,722 km (0.113 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 59

Radius: 8.8

Gravity: 0.76 G

Time & Orbit

Eccentricity (e): 0.185

Orbit Range: 2.27 AU - 3.29 AU

Year: 3258 Days

Day: 13.8 Hours

Environment

Temp: -218 °C

Axial Tilt: 1.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 40,180,761 km

• M1: 109,506 km (0.114 R)
• M2: 509,530 km (0.076 R)
• M3: 1,080,695 km (0.096 R)
• M4: 2,208,214 km (0.035 R)
• M5: 2,495,143 km (0.104 R)
• M6: 3,282,028 km (0.113 R)
• M7: 4,359,132 km (0.074 R)
• M8: 5,922,580 km (0.094 R)
• M9: 7,481,988 km (0.076 R)
• M10: 7,955,615 km (0.071 R)
• M11: 8,689,991 km (0.081 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 265.1

Radius: 13.1

Gravity: 1.54 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 2.78 AU - 2.8 AU

Year: 3276 Days

Day: 13.6 Hours

Environment

Temp: -220 °C

Axial Tilt: 34.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 40,180,761 km

• M1: 163,211 km (0.104 R)
• M2: 662,120 km (0.109 R)
• M3: 1,086,380 km (0.115 R)
• M4: 1,497,175 km (0.025 R)
• M5: 2,823,510 km (0.061 R)
• M6: 3,303,869 km (0.105 R)
• M7: 5,285,442 km (0.05 R)
• M8: 6,196,045 km (0.088 R)
• M9: 8,833,156 km (0.076 R)
• M10: 9,594,908 km (0.045 R)
• M11: 10,763,716 km (0.082 R)
• M12: 15,071,088 km (0.091 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 934.1

Radius: 11.7

Gravity: 6.82 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 3.64 AU - 4.66 AU

Year: 5943 Days

Day: 8.6 Hours

Environment

Temp: -223 °C

Axial Tilt: 10.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 40,180,761 km

• M1: 145,559 km (0.111 R)
• M2: 538,552 km (0.113 R)
• M3: 1,186,610 km (0.059 R)
• M4: 1,552,527 km (0.102 R)
• M5: 1,980,377 km (0.088 R)
• M6: 2,558,722 km (0.045 R)
• M7: 5,317,307 km (0.096 R)
• M8: 7,297,683 km (0.047 R)
• M9: 8,979,014 km (0.107 R)
• M10: 9,910,560 km (0.091 R)
• M11: 11,052,590 km (0.113 R)
• M12: 14,407,621 km (0.079 R)
• M13: 15,683,242 km (0.103 R)
• M14: 16,252,313 km (0.109 R)
• M15: 16,900,819 km (0.114 R)
• M16: 17,769,684 km (0.118 R)
• M17: 19,164,086 km (0.052 R)
• M18: 23,455,600 km (0.106 R)
• M19: 30,443,765 km (0.073 R)
• M20: 32,947,884 km (0.088 R)
• M21: 34,833,864 km (0.112 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 228.6

Radius: 12.5

Gravity: 1.46 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 4.27 AU - 4.51 AU

Year: 6466 Days

Day: 6.3 Hours

Environment

Temp: -225 °C

Axial Tilt: 28 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 40,180,761 km

• M1: 155,731 km (0.111 R)
• M2: 751,729 km (0.119 R)
• M3: 1,161,179 km (0.051 R)
• M4: 1,554,322 km (0.03 R)
• M5: 2,836,675 km (0.106 R)
• M6: 3,669,337 km (0.114 R)
• M7: 4,634,841 km (0.04 R)
• M8: 5,101,287 km (0.117 R)
• M9: 5,545,144 km (0.057 R)
• M10: 7,652,380 km (0.114 R)
• M11: 8,061,231 km (0.117 R)
• M12: 9,924,772 km (0.107 R)
• M13: 11,043,016 km (0.106 R)
• M14: 11,566,159 km (0.077 R)
• M15: 12,521,641 km (0.088 R)
• M16: 14,332,224 km (0.099 R)
• M17: 15,060,915 km (0.103 R)
• M18: 16,089,101 km (0.104 R)
• M19: 16,990,877 km (0.104 R)
• M20: 18,225,060 km (0.071 R)
• M21: 19,142,693 km (0.093 R)
• M22: 20,805,773 km (0.084 R)
• M23: 24,198,802 km (0.11 R)

Planet 9 - Ice Giant

Semi-Major Axis: 5.97 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 383.8

Radius: 3.5

Gravity: 31.33 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 4.53 AU - 7.41 AU

Year: 10253 Days

Day: 20.8 Hours

Environment

Temp: -227 °C

Axial Tilt: 21.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 40,180,761 km

• M1: 43,533 km (0.098 R)
• M2: 165,904 km (0.037 R)
• M3: 289,472 km (0.079 R)
• M4: 1,012,329 km (0.083 R)
• M5: 2,093,173 km (0.082 R)
• M6: 5,030,677 km (0.104 R)
• M7: 5,243,405 km (0.084 R)
• M8: 5,654,650 km (0.035 R)
• M9: 6,434,204 km (0.078 R)
• M10: 9,471,191 km (0.111 R)
• M11: 10,466,914 km (0.06 R)
• M12: 11,015,490 km (0.052 R)
• M13: 15,529,605 km (0.07 R)
• M14: 28,434,516 km (0.03 R)
• M15: 31,604,645 km (0.118 R)
• M16: 34,131,203 km (0.102 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 228 - 12,869 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit