🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.45

Radius: 1.82

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 0.45 AU - 0.67 AU

Year: 271 Days

Day: 43.1 Hours

Environment

Temp: -115 °C

Axial Tilt: 77.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 610.6

Radius: 13.4

Gravity: 3.4 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 0.92 AU - 1.02 AU

Year: 617 Days

Day: 5.5 Hours

Environment

Temp: -151 °C

Axial Tilt: 6.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 39,265,316 km

• M1: 166,802 km (0.118 R)
• M2: 610,210 km (0.078 R)
• M3: 1,155,793 km (0.09 R)
• M4: 1,618,799 km (0.117 R)
• M5: 2,180,090 km (0.041 R)
• M6: 2,982,832 km (0.101 R)
• M7: 3,714,814 km (0.116 R)
• M8: 4,145,806 km (0.096 R)
• M9: 4,847,420 km (0.116 R)
• M10: 6,066,044 km (0.084 R)
• M11: 6,488,658 km (0.076 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 550.2

Radius: 12.6

Gravity: 3.47 G

Time & Orbit

Eccentricity (e): 0.015

Orbit Range: 0.97 AU - 0.99 AU

Year: 626 Days

Day: 10.3 Hours

Environment

Temp: -158 °C

Axial Tilt: 2.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 39,265,316 km

• M1: 156,779 km (0.044 R)
• M2: 658,530 km (0.081 R)
• M3: 1,057,507 km (0.104 R)
• M4: 1,625,979 km (0.094 R)
• M5: 2,423,635 km (0.05 R)
• M6: 3,687,887 km (0.104 R)
• M7: 4,113,941 km (0.104 R)
• M8: 4,855,049 km (0.116 R)
• M9: 5,300,402 km (0.083 R)
• M10: 6,085,043 km (0.036 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 379.2

Radius: 9.1

Gravity: 4.58 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 1.06 AU - 1.1 AU

Year: 725 Days

Day: 5.1 Hours

Environment

Temp: -172 °C

Axial Tilt: 24.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 39,265,316 km

• M1: 113,246 km (0.05 R)
• M2: 488,138 km (0.072 R)
• M3: 895,044 km (0.106 R)
• M4: 1,250,937 km (0.083 R)
• M5: 1,544,748 km (0.115 R)
• M6: 2,219,284 km (0.074 R)
• M7: 2,562,163 km (0.095 R)
• M8: 3,125,249 km (0.094 R)
• M9: 3,545,021 km (0.094 R)
• M10: 4,274,161 km (0.115 R)
• M11: 4,985,199 km (0.12 R)
• M12: 5,991,544 km (0.037 R)
• M13: 6,562,410 km (0.112 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 507.4

Radius: 9

Gravity: 6.26 G

Time & Orbit

Eccentricity (e): 0.248

Orbit Range: 1.8 AU - 2.98 AU

Year: 2386 Days

Day: 12.6 Hours

Environment

Temp: -191 °C

Axial Tilt: 10.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 39,265,316 km

• M1: 112,348 km (0.101 R)
• M2: 712,834 km (0.107 R)
• M3: 1,050,177 km (0.08 R)
• M4: 2,401,794 km (0.036 R)
• M5: 2,721,185 km (0.114 R)
• M6: 3,515,251 km (0.106 R)
• M7: 4,725,946 km (0.114 R)
• M8: 6,664,735 km (0.075 R)
• M9: 8,659,922 km (0.112 R)
• M10: 12,394,333 km (0.111 R)
• M11: 14,635,459 km (0.079 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 47

Radius: 14.6

Gravity: 0.22 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 3.7 AU - 5.06 AU

Year: 5919 Days

Day: 8 Hours

Environment

Temp: -211 °C

Axial Tilt: 11.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 39,265,316 km

• M1: 181,761 km (0.094 R)
• M2: 1,185,713 km (0.097 R)
• M3: 2,749,908 km (0.099 R)
• M4: 3,403,800 km (0.059 R)
• M5: 6,585,448 km (0.11 R)
• M6: 7,681,103 km (0.108 R)
• M7: 8,476,814 km (0.076 R)
• M8: 10,333,922 km (0.079 R)
• M9: 13,710,645 km (0.1 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 970.1

Radius: 11.8

Gravity: 6.97 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 3.66 AU - 5.18 AU

Year: 6000 Days

Day: 10.9 Hours

Environment

Temp: -221 °C

Axial Tilt: 133.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 39,265,316 km

• M1: 146,756 km (0.12 R)
• M2: 889,210 km (0.09 R)
• M3: 1,361,789 km (0.103 R)
• M4: 3,054,340 km (0.115 R)
• M5: 3,908,244 km (0.068 R)
• M6: 4,444,852 km (0.05 R)
• M7: 5,417,986 km (0.095 R)
• M8: 7,063,263 km (0.075 R)
• M9: 7,627,846 km (0.089 R)
• M10: 8,386,157 km (0.095 R)
• M11: 8,933,386 km (0.073 R)
• M12: 10,052,827 km (0.089 R)
• M13: 10,430,113 km (0.119 R)
• M14: 10,866,041 km (0.093 R)
• M15: 11,263,523 km (0.11 R)
• M16: 11,826,160 km (0.047 R)
• M17: 12,952,184 km (0.12 R)
• M18: 14,207,160 km (0.114 R)
• M19: 16,174,971 km (0.102 R)
• M20: 18,811,334 km (0.069 R)
• M21: 22,998,728 km (0.047 R)
• M22: 26,319,352 km (0.117 R)
• M23: 27,493,695 km (0.036 R)
• M24: 28,420,603 km (0.104 R)
• M25: 28,797,291 km (0.077 R)
• M26: 29,272,563 km (0.104 R)
• M27: 30,239,115 km (0.119 R)
• M28: 33,579,785 km (0.092 R)
• M29: 37,609,503 km (0.037 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 34.3

Radius: 14.2

Gravity: 0.17 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 5.26 AU - 6.66 AU

Year: 9395 Days

Day: 7.8 Hours

Environment

Temp: -223 °C

Axial Tilt: 10.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 39,265,316 km

• M1: 589,864 km (0.115 R)
• M2: 1,664,426 km (0.116 R)
• M3: 3,364,755 km (0.114 R)
• M4: 4,490,928 km (0.119 R)
• M5: 5,175,488 km (0.114 R)
• M6: 5,806,492 km (0.033 R)
• M7: 8,227,135 km (0.095 R)
• M8: 11,030,599 km (0.077 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.31 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 359.5

Radius: 4.5

Gravity: 17.75 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 5.5 AU - 7.12 AU

Year: 10234 Days

Day: 22.6 Hours

Environment

Temp: -231 °C

Axial Tilt: 3.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 39,265,316 km

• M1: 56,099 km (0.092 R)
• M2: 201,957 km (0.056 R)
• M3: 379,081 km (0.076 R)
• M4: 761,154 km (0.11 R)
• M5: 1,530,087 km (0.105 R)
• M6: 1,737,130 km (0.054 R)
• M7: 2,738,539 km (0.031 R)
• M8: 3,305,664 km (0.096 R)
• M9: 3,749,371 km (0.107 R)
• M10: 3,922,456 km (0.119 R)
• M11: 4,392,193 km (0.088 R)
• M12: 5,257,168 km (0.057 R)
• M13: 5,893,408 km (0.113 R)
• M14: 6,904,989 km (0.116 R)
• M15: 7,394,024 km (0.119 R)
• M16: 7,825,465 km (0.109 R)
• M17: 11,074,282 km (0.051 R)
• M18: 12,330,305 km (0.093 R)
• M19: 12,992,725 km (0.119 R)
• M20: 14,327,886 km (0.111 R)
• M21: 19,095,570 km (0.109 R)
• M22: 19,387,734 km (0.052 R)
• M23: 19,682,891 km (0.102 R)
• M24: 20,893,437 km (0.103 R)
• M25: 21,674,787 km (0.026 R)
• M26: 26,233,183 km (0.091 R)
• M27: 26,776,074 km (0.113 R)
• M28: 28,071,741 km (0.086 R)
• M29: 29,896,237 km (0.076 R)
• M30: 32,105,648 km (0.08 R)
• M31: 33,355,538 km (0.042 R)
• M32: 36,174,411 km (0.086 R)
• M33: 36,846,704 km (0.059 R)
• M34: 38,680,175 km (0.081 R)
• M35: 39,147,818 km (0.06 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: 221 - 11,100 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit