🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.9

Radius: 1.53

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.038

Orbit Range: 0.57 AU - 0.61 AU

Year: 297 Days

Day: 26.3 Hours

Environment

Temp: -120 °C

Axial Tilt: 31.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 924.1

Radius: 9.7

Gravity: 9.82 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 0.75 AU - 0.87 AU

Year: 478 Days

Day: 14.6 Hours

Environment

Temp: -144 °C

Axial Tilt: 18.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 52,000,740 km

• M1: 120,576 km (0.044 R)
• M2: 432,637 km (0.064 R)
• M3: 1,444,816 km (0.11 R)
• M4: 1,794,875 km (0.059 R)
• M5: 2,755,593 km (0.115 R)
• M6: 3,107,148 km (0.042 R)
• M7: 3,488,772 km (0.092 R)
• M8: 3,819,234 km (0.079 R)
• M9: 4,156,128 km (0.085 R)
• M10: 4,512,769 km (0.099 R)
• M11: 5,053,266 km (0.073 R)
• M12: 6,282,961 km (0.088 R)
• M13: 6,714,102 km (0.066 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 24.5

Radius: 9.6

Gravity: 0.27 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 1.95 AU - 2.19 AU

Year: 1954 Days

Day: 8.1 Hours

Environment

Temp: -180 °C

Axial Tilt: 20.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 52,000,740 km

• M1: 141,520 km (0.098 R)
• M2: 690,693 km (0.118 R)
• M3: 1,027,438 km (0.095 R)
• M4: 2,208,663 km (0.102 R)
• M5: 3,984,988 km (0.07 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 997.9

Radius: 10

Gravity: 9.98 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 1.78 AU - 2.62 AU

Year: 2141 Days

Day: 6.8 Hours

Environment

Temp: -196 °C

Axial Tilt: 24.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 52,000,740 km

• M1: 125,064 km (0.118 R)
• M2: 651,200 km (0.074 R)
• M3: 981,362 km (0.098 R)
• M4: 1,692,850 km (0.1 R)
• M5: 3,066,308 km (0.032 R)
• M6: 3,702,248 km (0.077 R)
• M7: 5,780,462 km (0.106 R)
• M8: 6,922,941 km (0.099 R)
• M9: 7,702,196 km (0.085 R)
• M10: 8,672,488 km (0.102 R)
• M11: 9,048,128 km (0.062 R)
• M12: 10,621,748 km (0.079 R)
• M13: 11,616,424 km (0.119 R)
• M14: 12,413,033 km (0.086 R)
• M15: 15,916,615 km (0.081 R)
• M16: 16,636,630 km (0.074 R)
• M17: 17,594,206 km (0.093 R)
• M18: 18,870,575 km (0.113 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 905.9

Radius: 12.7

Gravity: 5.62 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 2.32 AU - 2.4 AU

Year: 2378 Days

Day: 5.8 Hours

Environment

Temp: -200 °C

Axial Tilt: 48.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 52,000,740 km

• M1: 158,125 km (0.111 R)
• M2: 715,377 km (0.082 R)
• M3: 1,223,112 km (0.117 R)
• M4: 1,923,829 km (0.093 R)
• M5: 2,692,911 km (0.112 R)
• M6: 4,211,030 km (0.062 R)
• M7: 6,598,762 km (0.078 R)
• M8: 7,001,779 km (0.09 R)
• M9: 7,762,783 km (0.067 R)
• M10: 10,113,115 km (0.097 R)
• M11: 10,611,426 km (0.067 R)
• M12: 13,127,363 km (0.089 R)
• M13: 16,069,205 km (0.096 R)
• M14: 16,695,870 km (0.083 R)
• M15: 17,666,312 km (0.105 R)
• M16: 18,165,520 km (0.118 R)
• M17: 19,483,926 km (0.087 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 809.9

Radius: 13.7

Gravity: 4.32 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 2.89 AU - 4.17 AU

Year: 4351 Days

Day: 9.1 Hours

Environment

Temp: -201 °C

Axial Tilt: 14.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 52,000,740 km

• M1: 171,738 km (0.079 R)
• M2: 721,062 km (0.077 R)
• M3: 1,379,143 km (0.025 R)
• M4: 1,860,250 km (0.115 R)
• M5: 2,824,408 km (0.092 R)
• M6: 3,271,107 km (0.107 R)
• M7: 4,356,888 km (0.057 R)
• M8: 5,500,265 km (0.088 R)
• M9: 6,672,963 km (0.081 R)
• M10: 8,911,096 km (0.109 R)
• M11: 13,021,747 km (0.078 R)
• M12: 20,021,431 km (0.083 R)
• M13: 20,842,723 km (0.107 R)
• M14: 25,528,278 km (0.068 R)
• M15: 27,151,565 km (0.039 R)
• M16: 28,158,059 km (0.052 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 953.2

Radius: 11.4

Gravity: 7.33 G

Time & Orbit

Eccentricity (e): 0.001

Orbit Range: 4.26 AU - 4.26 AU

Year: 5768 Days

Day: 12.1 Hours

Environment

Temp: -222 °C

Axial Tilt: 7.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 52,000,740 km

• M1: 144,063 km (0.075 R)
• M2: 591,211 km (0.081 R)
• M3: 1,024,147 km (0.071 R)
• M4: 1,568,085 km (0.04 R)
• M5: 2,184,727 km (0.107 R)
• M6: 2,559,470 km (0.114 R)
• M7: 3,952,376 km (0.066 R)
• M8: 5,305,788 km (0.042 R)
• M9: 6,287,449 km (0.043 R)
• M10: 8,608,909 km (0.107 R)
• M11: 10,099,951 km (0.063 R)
• M12: 11,552,696 km (0.075 R)
• M13: 12,171,283 km (0.084 R)
• M14: 13,306,880 km (0.109 R)
• M15: 14,044,398 km (0.118 R)
• M16: 16,293,153 km (0.08 R)
• M17: 16,744,190 km (0.083 R)
• M18: 21,262,944 km (0.085 R)
• M19: 22,113,856 km (0.109 R)
• M20: 23,229,557 km (0.101 R)
• M21: 23,636,912 km (0.079 R)
• M22: 25,228,783 km (0.068 R)
• M23: 26,446,809 km (0.053 R)
• M24: 28,625,104 km (0.103 R)
• M25: 31,215,989 km (0.091 R)
• M26: 33,130,244 km (0.119 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 690.6

Radius: 13.3

Gravity: 3.9 G

Time & Orbit

Eccentricity (e): 0.009

Orbit Range: 4.75 AU - 4.83 AU

Year: 6877 Days

Day: 14.6 Hours

Environment

Temp: -209 °C

Axial Tilt: 13.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 52,000,740 km

• M1: 172,636 km (0.099 R)
• M2: 776,413 km (0.052 R)
• M3: 1,398,590 km (0.032 R)
• M4: 2,195,050 km (0.099 R)
• M5: 2,987,170 km (0.102 R)
• M6: 3,585,412 km (0.034 R)
• M7: 4,110,650 km (0.118 R)
• M8: 5,653,154 km (0.047 R)
• M9: 6,134,410 km (0.108 R)
• M10: 9,847,280 km (0.113 R)
• M11: 13,007,984 km (0.092 R)
• M12: 14,313,973 km (0.076 R)
• M13: 17,385,517 km (0.1 R)
• M14: 17,925,714 km (0.108 R)
• M15: 20,947,891 km (0.074 R)
• M16: 21,637,238 km (0.115 R)
• M17: 24,800,335 km (0.039 R)
• M18: 26,007,440 km (0.03 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.76 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 657.9

Radius: 7.5

Gravity: 11.7 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 5.87 AU - 7.65 AU

Year: 11530 Days

Day: 20 Hours

Environment

Temp: -223 °C

Axial Tilt: 6.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 52,000,740 km

• M1: 93,199 km (0.091 R)
• M2: 366,664 km (0.063 R)
• M3: 609,163 km (0.101 R)
• M4: 1,196,484 km (0.106 R)
• M5: 1,992,793 km (0.095 R)
• M6: 2,415,557 km (0.076 R)
• M7: 3,341,119 km (0.094 R)
• M8: 3,618,623 km (0.1 R)
• M9: 4,515,013 km (0.084 R)
• M10: 4,791,919 km (0.081 R)
• M11: 6,898,107 km (0.081 R)
• M12: 7,349,893 km (0.066 R)
• M13: 8,176,421 km (0.057 R)
• M14: 9,356,300 km (0.118 R)
• M15: 13,764,350 km (0.114 R)
• M16: 14,021,958 km (0.054 R)
• M17: 17,669,603 km (0.05 R)
• M18: 18,359,249 km (0.107 R)
• M19: 18,907,974 km (0.092 R)
• M20: 19,548,403 km (0.053 R)
• M21: 20,120,614 km (0.116 R)
• M22: 24,068,801 km (0.11 R)
• M23: 24,537,043 km (0.056 R)
• M24: 26,769,641 km (0.078 R)
• M25: 27,373,718 km (0.091 R)
• M26: 28,818,235 km (0.037 R)
• M27: 31,522,964 km (0.035 R)
• M28: 32,196,454 km (0.088 R)
• M29: 33,109,300 km (0.112 R)
• M30: 33,805,229 km (0.088 R)
• M31: 41,710,878 km (0.113 R)
• M32: 50,306,622 km (0.088 R)
• M33: 50,764,841 km (0.098 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: 390 - 19,888 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit