🌌 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: 0.16

Radius: 0.48

Gravity: 0.69 G

Time & Orbit

Eccentricity (e): 0.145

Orbit Range: 0.55 AU - 0.73 AU

Year: 331 Days

Day: 18.8 Hours

Environment

Temp: -142 °C

Axial Tilt: 25.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 480.4

Radius: 14.2

Gravity: 2.38 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 0.78 AU - 0.9 AU

Year: 497 Days

Day: 12.6 Hours

Environment

Temp: -140 °C

Axial Tilt: 22.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 74,513,392 km

• M1: 176,675 km (0.065 R)
• M2: 639,082 km (0.113 R)
• M3: 1,089,970 km (0.107 R)
• M4: 1,962,574 km (0.061 R)
• M5: 2,724,476 km (0.097 R)
• M6: 3,298,932 km (0.101 R)
• M7: 4,961,413 km (0.097 R)
• M8: 5,608,125 km (0.055 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 701.7

Radius: 14.2

Gravity: 3.48 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 0.93 AU - 1.37 AU

Year: 796 Days

Day: 7.2 Hours

Environment

Temp: -167 °C

Axial Tilt: 1.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 74,513,392 km

• M1: 179,517 km (0.083 R)
• M2: 729,290 km (0.096 R)
• M3: 1,496,577 km (0.107 R)
• M4: 2,127,581 km (0.063 R)
• M5: 2,969,817 km (0.062 R)
• M6: 3,643,307 km (0.083 R)
• M7: 4,498,857 km (0.092 R)
• M8: 5,522,555 km (0.115 R)
• M9: 6,739,384 km (0.039 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 867

Radius: 11

Gravity: 7.17 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 1 AU - 1.4 AU

Year: 849 Days

Day: 14.2 Hours

Environment

Temp: -176 °C

Axial Tilt: 36.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 74,513,392 km

• M1: 136,882 km (0.104 R)
• M2: 479,012 km (0.093 R)
• M3: 853,007 km (0.102 R)
• M4: 1,222,364 km (0.103 R)
• M5: 2,134,612 km (0.043 R)
• M6: 3,256,147 km (0.095 R)
• M7: 3,869,648 km (0.11 R)
• M8: 4,860,136 km (0.113 R)
• M9: 5,662,728 km (0.078 R)
• M10: 6,375,412 km (0.038 R)
• M11: 8,902,719 km (0.09 R)
• M12: 9,518,613 km (0.101 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 714.2

Radius: 12.3

Gravity: 4.72 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 1.62 AU - 1.62 AU

Year: 1331 Days

Day: 12.1 Hours

Environment

Temp: -173 °C

Axial Tilt: 22.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 74,513,392 km

• M1: 153,039 km (0.082 R)
• M2: 640,728 km (0.11 R)
• M3: 1,060,799 km (0.118 R)
• M4: 1,461,122 km (0.107 R)
• M5: 2,247,259 km (0.105 R)
• M6: 2,776,836 km (0.03 R)
• M7: 3,253,754 km (0.034 R)
• M8: 3,884,758 km (0.065 R)
• M9: 5,958,184 km (0.073 R)
• M10: 6,443,629 km (0.085 R)
• M11: 7,157,510 km (0.088 R)
• M12: 7,787,467 km (0.028 R)
• M13: 8,949,244 km (0.084 R)
• M14: 10,158,443 km (0.112 R)
• M15: 10,752,048 km (0.061 R)
• M16: 11,438,552 km (0.026 R)
• M17: 12,154,229 km (0.105 R)
• M18: 12,597,637 km (0.093 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 220.1

Radius: 10.7

Gravity: 1.92 G

Time & Orbit

Eccentricity (e): 0.009

Orbit Range: 3.89 AU - 3.97 AU

Year: 5030 Days

Day: 11.6 Hours

Environment

Temp: -212 °C

Axial Tilt: 4.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 74,513,392 km

• M1: 133,142 km (0.106 R)
• M2: 777,909 km (0.096 R)
• M3: 1,178,233 km (0.099 R)
• M4: 1,597,107 km (0.09 R)
• M5: 2,076,568 km (0.095 R)
• M6: 2,665,984 km (0.041 R)
• M7: 3,135,721 km (0.064 R)
• M8: 4,117,233 km (0.115 R)
• M9: 4,656,832 km (0.057 R)
• M10: 5,416,041 km (0.09 R)
• M11: 6,394,262 km (0.076 R)
• M12: 7,149,581 km (0.069 R)
• M13: 8,596,043 km (0.095 R)
• M14: 10,344,394 km (0.106 R)
• M15: 10,856,168 km (0.072 R)
• M16: 11,261,279 km (0.081 R)
• M17: 13,719,770 km (0.105 R)
• M18: 15,224,426 km (0.111 R)
• M19: 17,934,840 km (0.092 R)
• M20: 19,022,117 km (0.069 R)
• M21: 20,274,401 km (0.091 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.53 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 827

Radius: 5.3

Gravity: 29.44 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 6.52 AU - 8.54 AU

Year: 13342 Days

Day: 15.1 Hours

Environment

Temp: -216 °C

Axial Tilt: 45.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 74,513,392 km

• M1: 83,625 km (0.119 R)
• M2: 348,563 km (0.069 R)
• M3: 629,957 km (0.094 R)
• M4: 920,027 km (0.038 R)
• M5: 1,557,314 km (0.105 R)
• M6: 1,853,817 km (0.035 R)
• M7: 2,226,465 km (0.099 R)
• M8: 2,715,201 km (0.063 R)
• M9: 2,901,002 km (0.086 R)
• M10: 3,787,818 km (0.06 R)
• M11: 4,262,492 km (0.105 R)
• M12: 4,775,762 km (0.11 R)
• M13: 5,013,025 km (0.11 R)
• M14: 6,002,166 km (0.059 R)
• M15: 6,481,029 km (0.089 R)
• M16: 7,560,228 km (0.051 R)
• M17: 9,903,977 km (0.113 R)
• M18: 11,690,475 km (0.088 R)
• M19: 12,563,528 km (0.06 R)
• M20: 17,113,248 km (0.071 R)
• M21: 20,188,233 km (0.114 R)
• M22: 22,556,965 km (0.113 R)
• M23: 25,615,494 km (0.091 R)
• M24: 27,512,395 km (0.091 R)
• M25: 34,887,869 km (0.119 R)
• M26: 36,688,728 km (0.105 R)
• M27: 37,214,415 km (0.118 R)
• M28: 38,957,529 km (0.115 R)
• M29: 43,478,826 km (0.1 R)
• M30: 47,711,399 km (0.07 R)
• M31: 50,249,177 km (0.105 R)
• M32: 54,562,532 km (0.12 R)
• M33: 59,838,550 km (0.099 R)
• M34: 60,749,751 km (0.118 R)
• M35: 61,485,323 km (0.096 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.97 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 769.3

Radius: 5.9

Gravity: 22.1 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 7.72 AU - 8.22 AU

Year: 14528 Days

Day: 18.6 Hours

Environment

Temp: -232 °C

Axial Tilt: 116.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 74,513,392 km

• M1: 77,791 km (0.06 R)
• M2: 1,169,706 km (0.091 R)
• M3: 2,494,844 km (0.094 R)
• M4: 3,521,235 km (0.1 R)
• M5: 4,314,103 km (0.079 R)
• M6: 8,392,889 km (0.03 R)
• M7: 8,997,714 km (0.039 R)
• M8: 11,771,557 km (0.094 R)
• M9: 11,957,807 km (0.063 R)
• M10: 12,400,317 km (0.089 R)
• M11: 14,069,979 km (0.06 R)
• M12: 14,421,085 km (0.09 R)
• M13: 16,341,623 km (0.116 R)
• M14: 19,016,433 km (0.094 R)
• M15: 20,502,089 km (0.117 R)
• M16: 21,411,195 km (0.06 R)
• M17: 22,441,925 km (0.07 R)
• M18: 24,602,118 km (0.043 R)
• M19: 25,836,899 km (0.092 R)
• M20: 29,559,043 km (0.107 R)
• M21: 36,442,640 km (0.068 R)
• M22: 48,976,248 km (0.071 R)
• M23: 55,325,631 km (0.052 R)
• M24: 60,156,146 km (0.039 R)
• M25: 61,452,861 km (0.113 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.06 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 830

Radius: 6.9

Gravity: 17.43 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 7.05 AU - 11.07 AU

Year: 17608 Days

Day: 20.8 Hours

Environment

Temp: -230 °C

Axial Tilt: 26.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 74,513,392 km

• M1: 86,767 km (0.115 R)
• M2: 512,672 km (0.066 R)
• M3: 794,963 km (0.083 R)
• M4: 2,640,702 km (0.119 R)
• M5: 2,858,965 km (0.102 R)
• M6: 3,142,004 km (0.101 R)
• M7: 3,529,463 km (0.064 R)
• M8: 4,105,714 km (0.118 R)
• M9: 4,707,695 km (0.071 R)
• M10: 5,521,657 km (0.056 R)
• M11: 5,799,311 km (0.085 R)
• M12: 6,086,240 km (0.079 R)
• M13: 7,425,141 km (0.089 R)
• M14: 7,813,048 km (0.093 R)
• M15: 8,112,842 km (0.086 R)
• M16: 10,611,426 km (0.108 R)
• M17: 11,229,265 km (0.03 R)
• M18: 12,878,432 km (0.111 R)
• M19: 15,606,050 km (0.069 R)
• M20: 16,162,105 km (0.058 R)
• M21: 18,696,143 km (0.073 R)
• M22: 22,571,327 km (0.063 R)
• M23: 26,724,313 km (0.05 R)
• M24: 28,920,560 km (0.097 R)
• M25: 38,050,069 km (0.099 R)
• M26: 39,493,389 km (0.117 R)
• M27: 42,488,937 km (0.093 R)
• M28: 48,089,582 km (0.111 R)
• M29: 50,979,214 km (0.089 R)
• M30: 52,378,254 km (0.089 R)
• M31: 54,887,908 km (0.086 R)
• M32: 55,252,777 km (0.109 R)
• M33: 58,041,730 km (0.095 R)
• M34: 59,952,095 km (0.062 R)
• M35: 61,510,456 km (0.113 R)
• M36: 72,302,745 km (0.093 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 222 - 18,031 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit