🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.21

Radius: 0.54

Gravity: 0.72 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 0.56 AU - 0.72 AU

Year: 336 Days

Day: 34.8 Hours

Environment

Temp: -130 °C

Axial Tilt: 8.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 743.7

Radius: 13.9

Gravity: 3.85 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 0.94 AU - 1.28 AU

Year: 767 Days

Day: 7.5 Hours

Environment

Temp: -174 °C

Axial Tilt: 38.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 52,048,727 km

• M1: 172,935 km (0.072 R)
• M2: 629,209 km (0.112 R)
• M3: 1,072,617 km (0.106 R)
• M4: 2,000,872 km (0.058 R)
• M5: 2,646,386 km (0.097 R)
• M6: 3,100,865 km (0.094 R)
• M7: 4,688,846 km (0.104 R)
• M8: 6,197,989 km (0.043 R)
• M9: 7,031,100 km (0.094 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 391.4

Radius: 8.9

Gravity: 4.94 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 1.01 AU - 1.37 AU

Year: 852 Days

Day: 13.8 Hours

Environment

Temp: -175 °C

Axial Tilt: 24.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 52,048,727 km

• M1: 110,702 km (0.105 R)
• M2: 388,356 km (0.1 R)
• M3: 752,627 km (0.054 R)
• M4: 1,177,634 km (0.119 R)
• M5: 1,538,315 km (0.065 R)
• M6: 1,858,604 km (0.107 R)
• M7: 2,815,133 km (0.099 R)
• M8: 3,273,650 km (0.058 R)
• M9: 3,809,510 km (0.077 R)
• M10: 4,340,732 km (0.117 R)
• M11: 4,954,083 km (0.107 R)
• M12: 5,478,274 km (0.114 R)
• M13: 5,866,780 km (0.074 R)
• M14: 6,333,226 km (0.087 R)
• M15: 7,318,477 km (0.114 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 62.8

Radius: 11.1

Gravity: 0.51 G

Time & Orbit

Eccentricity (e): 0.083

Orbit Range: 2.46 AU - 2.9 AU

Year: 2878 Days

Day: 9.3 Hours

Environment

Temp: -209 °C

Axial Tilt: 14.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 52,048,727 km

• M1: 138,079 km (0.091 R)
• M2: 578,495 km (0.085 R)
• M3: 928,853 km (0.113 R)
• M4: 1,458,579 km (0.101 R)
• M5: 1,848,282 km (0.115 R)
• M6: 2,892,924 km (0.115 R)
• M7: 3,809,211 km (0.107 R)
• M8: 4,543,587 km (0.087 R)
• M9: 5,759,219 km (0.104 R)
• M10: 6,905,887 km (0.079 R)
• M11: 7,824,417 km (0.115 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 102.9

Radius: 11.9

Gravity: 0.73 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 2.47 AU - 3.57 AU

Year: 3443 Days

Day: 13 Hours

Environment

Temp: -195 °C

Axial Tilt: 13.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 52,048,727 km

• M1: 148,102 km (0.088 R)
• M2: 682,914 km (0.117 R)
• M3: 1,481,917 km (0.111 R)
• M4: 2,779,678 km (0.064 R)
• M5: 3,576,137 km (0.112 R)
• M6: 5,262,404 km (0.05 R)
• M7: 7,220,192 km (0.034 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 668.7

Radius: 14.6

Gravity: 3.14 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 3.29 AU - 3.41 AU

Year: 4022 Days

Day: 8.3 Hours

Environment

Temp: -196 °C

Axial Tilt: 29.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 52,048,727 km

• M1: 182,509 km (0.036 R)
• M2: 783,444 km (0.045 R)
• M3: 1,265,897 km (0.114 R)
• M4: 2,358,261 km (0.073 R)
• M5: 3,302,074 km (0.098 R)
• M6: 5,711,198 km (0.109 R)
• M7: 6,707,221 km (0.118 R)
• M8: 8,307,170 km (0.065 R)
• M9: 10,862,900 km (0.09 R)
• M10: 14,999,281 km (0.102 R)
• M11: 24,545,420 km (0.052 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 943.3

Radius: 9.6

Gravity: 10.24 G

Time & Orbit

Eccentricity (e): 0.069

Orbit Range: 3.48 AU - 4 AU

Year: 4745 Days

Day: 13.6 Hours

Environment

Temp: -212 °C

Axial Tilt: 25.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 52,048,727 km

• M1: 119,678 km (0.096 R)
• M2: 517,758 km (0.089 R)
• M3: 1,158,785 km (0.119 R)
• M4: 2,635,765 km (0.035 R)
• M5: 3,143,949 km (0.092 R)
• M6: 3,518,093 km (0.101 R)
• M7: 4,796,407 km (0.052 R)
• M8: 5,237,272 km (0.113 R)
• M9: 5,918,092 km (0.082 R)
• M10: 8,201,404 km (0.113 R)
• M11: 8,513,166 km (0.049 R)
• M12: 11,638,864 km (0.071 R)
• M13: 13,164,014 km (0.1 R)
• M14: 14,476,586 km (0.119 R)
• M15: 17,043,386 km (0.069 R)
• M16: 18,869,079 km (0.072 R)
• M17: 20,749,673 km (0.06 R)
• M18: 22,296,366 km (0.118 R)
• M19: 23,760,630 km (0.028 R)
• M20: 27,223,222 km (0.058 R)
• M21: 27,831,337 km (0.066 R)
• M22: 29,893,245 km (0.038 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 954.1

Radius: 12.9

Gravity: 5.73 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 3.67 AU - 5.97 AU

Year: 6942 Days

Day: 5.3 Hours

Environment

Temp: -223 °C

Axial Tilt: 35.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 52,048,727 km

• M1: 160,519 km (0.09 R)
• M2: 642,972 km (0.114 R)
• M3: 1,058,704 km (0.072 R)
• M4: 1,556,267 km (0.102 R)
• M5: 2,312,633 km (0.116 R)
• M6: 3,531,108 km (0.074 R)
• M7: 4,871,206 km (0.11 R)
• M8: 5,355,155 km (0.104 R)
• M9: 6,526,656 km (0.054 R)
• M10: 7,002,976 km (0.103 R)
• M11: 7,943,797 km (0.05 R)
• M12: 9,011,477 km (0.091 R)
• M13: 11,641,856 km (0.027 R)
• M14: 13,480,863 km (0.06 R)
• M15: 22,214,685 km (0.12 R)
• M16: 28,748,522 km (0.028 R)
• M17: 29,435,475 km (0.101 R)
• M18: 32,187,777 km (0.064 R)
• M19: 34,006,289 km (0.071 R)
• M20: 35,218,929 km (0.047 R)
• M21: 36,803,619 km (0.12 R)
• M22: 39,149,314 km (0.097 R)
• M23: 41,344,364 km (0.047 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.43 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 766.6

Radius: 5.4

Gravity: 26.29 G

Time & Orbit

Eccentricity (e): 0.185

Orbit Range: 5.24 AU - 7.62 AU

Year: 10696 Days

Day: 19 Hours

Environment

Temp: -223 °C

Axial Tilt: 39.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 52,048,727 km

• M1: 67,618 km (0.11 R)
• M2: 365,318 km (0.1 R)
• M3: 759,209 km (0.055 R)
• M4: 1,090,269 km (0.057 R)
• M5: 1,374,655 km (0.094 R)
• M6: 1,630,766 km (0.101 R)
• M7: 2,452,208 km (0.106 R)
• M8: 4,171,237 km (0.034 R)
• M9: 4,495,117 km (0.096 R)
• M10: 4,709,939 km (0.077 R)
• M11: 5,464,062 km (0.071 R)
• M12: 5,638,045 km (0.083 R)
• M13: 5,851,970 km (0.119 R)
• M14: 6,487,162 km (0.083 R)
• M15: 6,881,801 km (0.025 R)
• M16: 7,167,384 km (0.053 R)
• M17: 8,574,800 km (0.068 R)
• M18: 9,442,618 km (0.114 R)
• M19: 10,052,827 km (0.062 R)
• M20: 11,183,338 km (0.071 R)
• M21: 14,211,199 km (0.05 R)
• M22: 14,607,783 km (0.096 R)
• M23: 16,995,515 km (0.046 R)
• M24: 17,217,967 km (0.065 R)
• M25: 20,372,088 km (0.028 R)
• M26: 20,961,055 km (0.102 R)
• M27: 28,938,362 km (0.073 R)
• M28: 29,789,574 km (0.112 R)
• M29: 30,766,896 km (0.108 R)
• M30: 31,208,061 km (0.071 R)
• M31: 31,990,308 km (0.107 R)
• M32: 32,443,141 km (0.115 R)
• M33: 33,477,610 km (0.042 R)
• M34: 35,733,247 km (0.115 R)
• M35: 36,343,157 km (0.117 R)
• M36: 40,281,171 km (0.073 R)
• M37: 42,013,964 km (0.085 R)
• M38: 43,380,091 km (0.104 R)
• M39: 50,047,668 km (0.063 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 350 - 12,740 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit