🌌 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: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.67

Radius: 1.85

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.001

Orbit Range: 0.61 AU - 0.61 AU

Year: 313 Days

Day: 22.9 Hours

Environment

Temp: -125 °C

Axial Tilt: 20.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 96.8

Radius: 14.2

Gravity: 0.48 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 0.72 AU - 1.18 AU

Year: 607 Days

Day: 9.6 Hours

Environment

Temp: -164 °C

Axial Tilt: 21.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 44,824,813 km

• M1: 176,525 km (0.101 R)
• M2: 971,788 km (0.112 R)
• M3: 1,711,100 km (0.118 R)
• M4: 2,518,181 km (0.116 R)
• M5: 3,620,268 km (0.077 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 930.7

Radius: 11.2

Gravity: 7.42 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 1.56 AU - 2.58 AU

Year: 1954 Days

Day: 8.7 Hours

Environment

Temp: -184 °C

Axial Tilt: 2.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 44,824,813 km

• M1: 139,276 km (0.091 R)
• M2: 672,742 km (0.097 R)
• M3: 1,135,747 km (0.095 R)
• M4: 1,549,385 km (0.109 R)
• M5: 1,945,670 km (0.111 R)
• M6: 2,764,868 km (0.1 R)
• M7: 3,270,658 km (0.095 R)
• M8: 4,047,370 km (0.081 R)
• M9: 5,473,636 km (0.106 R)
• M10: 6,067,540 km (0.049 R)
• M11: 6,487,162 km (0.102 R)
• M12: 9,152,099 km (0.055 R)
• M13: 10,539,170 km (0.069 R)
• M14: 11,031,347 km (0.087 R)
• M15: 12,225,736 km (0.069 R)
• M16: 12,769,375 km (0.114 R)
• M17: 14,130,865 km (0.102 R)
• M18: 15,059,270 km (0.096 R)
• M19: 16,077,283 km (0.063 R)
• M20: 16,426,594 km (0.111 R)
• M21: 17,610,512 km (0.068 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 370.8

Radius: 13.1

Gravity: 2.16 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 2.1 AU - 2.46 AU

Year: 2258 Days

Day: 5.6 Hours

Environment

Temp: -194 °C

Axial Tilt: 75.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 44,824,813 km

• M1: 163,361 km (0.056 R)
• M2: 619,186 km (0.112 R)
• M3: 1,201,570 km (0.078 R)
• M4: 1,953,449 km (0.11 R)
• M5: 2,572,186 km (0.091 R)
• M6: 3,272,453 km (0.098 R)
• M7: 4,042,583 km (0.079 R)
• M8: 4,909,653 km (0.104 R)
• M9: 5,487,250 km (0.075 R)
• M10: 5,897,298 km (0.106 R)
• M11: 7,012,999 km (0.041 R)
• M12: 9,116,045 km (0.11 R)
• M13: 10,159,491 km (0.078 R)
• M14: 10,710,310 km (0.098 R)
• M15: 11,573,789 km (0.074 R)
• M16: 13,358,192 km (0.12 R)
• M17: 14,019,864 km (0.077 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 736.2

Radius: 12.1

Gravity: 5.03 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 2.01 AU - 3.21 AU

Year: 2766 Days

Day: 7 Hours

Environment

Temp: -206 °C

Axial Tilt: 48.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 44,824,813 km

• M1: 150,645 km (0.072 R)
• M2: 619,485 km (0.076 R)
• M3: 1,181,823 km (0.107 R)
• M4: 2,036,177 km (0.107 R)
• M5: 2,453,405 km (0.046 R)
• M6: 2,993,453 km (0.087 R)
• M7: 3,669,037 km (0.113 R)
• M8: 4,063,976 km (0.087 R)
• M9: 5,178,480 km (0.099 R)
• M10: 5,575,213 km (0.113 R)
• M11: 6,099,853 km (0.103 R)
• M12: 6,801,766 km (0.107 R)
• M13: 8,604,122 km (0.112 R)
• M14: 9,970,698 km (0.118 R)
• M15: 10,391,966 km (0.095 R)
• M16: 11,897,519 km (0.117 R)
• M17: 13,175,533 km (0.066 R)
• M18: 13,824,339 km (0.064 R)
• M19: 14,689,613 km (0.093 R)
• M20: 15,185,829 km (0.087 R)
• M21: 16,957,068 km (0.079 R)
• M22: 17,448,198 km (0.106 R)
• M23: 18,746,408 km (0.096 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 927.5

Radius: 13.8

Gravity: 4.87 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 3.33 AU - 5.01 AU

Year: 5586 Days

Day: 10.2 Hours

Environment

Temp: -219 °C

Axial Tilt: 22.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 44,824,813 km

• M1: 171,589 km (0.068 R)
• M2: 618,587 km (0.042 R)
• M3: 1,446,312 km (0.047 R)
• M4: 2,278,675 km (0.086 R)
• M5: 3,158,909 km (0.088 R)
• M6: 5,263,152 km (0.079 R)
• M7: 6,941,341 km (0.057 R)
• M8: 7,942,301 km (0.039 R)
• M9: 9,424,067 km (0.091 R)
• M10: 12,661,515 km (0.08 R)
• M11: 13,256,167 km (0.099 R)
• M12: 14,211,798 km (0.079 R)
• M13: 16,386,801 km (0.096 R)
• M14: 16,963,651 km (0.073 R)
• M15: 18,225,808 km (0.062 R)
• M16: 20,345,011 km (0.091 R)
• M17: 21,769,482 km (0.08 R)
• M18: 22,781,661 km (0.082 R)
• M19: 24,816,192 km (0.067 R)
• M20: 26,969,355 km (0.098 R)
• M21: 27,593,926 km (0.11 R)
• M22: 29,808,722 km (0.094 R)
• M23: 30,959,579 km (0.074 R)
• M24: 33,657,127 km (0.119 R)
• M25: 34,799,756 km (0.099 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.04 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 785.6

Radius: 3.7

Gravity: 57.38 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 6.98 AU - 7.1 AU

Year: 12254 Days

Day: 20 Hours

Environment

Temp: -219 °C

Axial Tilt: 1.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 44,824,813 km

• M1: 47,572 km (0.097 R)
• M2: 251,624 km (0.107 R)
• M3: 369,806 km (0.09 R)
• M4: 562,638 km (0.038 R)
• M5: 1,054,964 km (0.033 R)
• M6: 1,389,016 km (0.064 R)
• M7: 2,302,311 km (0.093 R)
• M8: 3,504,031 km (0.117 R)
• M9: 3,692,674 km (0.098 R)
• M10: 4,836,798 km (0.105 R)
• M11: 5,207,801 km (0.101 R)
• M12: 5,525,248 km (0.092 R)
• M13: 6,717,543 km (0.109 R)
• M14: 8,305,674 km (0.078 R)
• M15: 9,493,331 km (0.109 R)
• M16: 10,290,538 km (0.062 R)
• M17: 11,131,428 km (0.106 R)
• M18: 11,716,804 km (0.059 R)
• M19: 12,260,892 km (0.036 R)
• M20: 14,606,586 km (0.1 R)
• M21: 17,389,406 km (0.034 R)
• M22: 18,417,143 km (0.088 R)
• M23: 22,840,453 km (0.119 R)
• M24: 26,459,076 km (0.068 R)
• M25: 28,782,182 km (0.103 R)
• M26: 29,109,202 km (0.097 R)
• M27: 32,752,359 km (0.085 R)
• M28: 44,023,661 km (0.11 R)
• M29: 45,040,628 km (0.089 R)
• M30: 46,073,302 km (0.11 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.49 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 309.8

Radius: 3.5

Gravity: 25.29 G

Time & Orbit

Eccentricity (e): 0.243

Orbit Range: 5.67 AU - 9.31 AU

Year: 13447 Days

Day: 19 Hours

Environment

Temp: -232 °C

Axial Tilt: 30 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 44,824,813 km

• M1: 44,281 km (0.044 R)
• M2: 336,296 km (0.118 R)
• M3: 546,780 km (0.069 R)
• M4: 1,963,472 km (0.088 R)
• M5: 2,579,217 km (0.086 R)
• M6: 2,761,726 km (0.099 R)
• M7: 3,018,287 km (0.066 R)
• M8: 6,862,503 km (0.096 R)
• M9: 7,657,765 km (0.074 R)
• M10: 9,668,062 km (0.103 R)
• M11: 10,871,876 km (0.069 R)
• M12: 13,938,632 km (0.042 R)
• M13: 17,250,280 km (0.11 R)
• M14: 24,196,408 km (0.119 R)
• M15: 24,824,869 km (0.053 R)
• M16: 35,028,042 km (0.094 R)
• M17: 40,285,360 km (0.105 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 521 - 19,468 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit