🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.11

Radius: 1.76

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 0.41 AU - 0.61 AU

Year: 239 Days

Day: 34.9 Hours

Environment

Temp: -109 °C

Axial Tilt: 144.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 352.5

Radius: 14.8

Gravity: 1.61 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 0.56 AU - 0.88 AU

Year: 401 Days

Day: 9.1 Hours

Environment

Temp: -140 °C

Axial Tilt: 37.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 50,186,612 km

• M1: 184,155 km (0.093 R)
• M2: 729,888 km (0.047 R)
• M3: 1,207,255 km (0.042 R)
• M4: 1,767,648 km (0.104 R)
• M5: 2,287,052 km (0.08 R)
• M6: 2,842,958 km (0.114 R)
• M7: 3,521,683 km (0.102 R)
• M8: 4,097,336 km (0.032 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 510.3

Radius: 12.2

Gravity: 3.43 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 0.97 AU - 1.25 AU

Year: 767 Days

Day: 8.5 Hours

Environment

Temp: -161 °C

Axial Tilt: 58.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 50,186,612 km

• M1: 151,692 km (0.116 R)
• M2: 705,653 km (0.073 R)
• M3: 1,403,976 km (0.057 R)
• M4: 2,517,882 km (0.115 R)
• M5: 2,987,619 km (0.082 R)
• M6: 3,410,383 km (0.06 R)
• M7: 4,270,720 km (0.117 R)
• M8: 4,926,707 km (0.08 R)
• M9: 6,064,847 km (0.114 R)
• M10: 6,521,420 km (0.078 R)
• M11: 7,260,583 km (0.116 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 673.7

Radius: 12.6

Gravity: 4.24 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 1.72 AU - 2.48 AU

Year: 1996 Days

Day: 11.4 Hours

Environment

Temp: -195 °C

Axial Tilt: 42.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 50,186,612 km

• M1: 156,779 km (0.073 R)
• M2: 583,432 km (0.097 R)
• M3: 986,897 km (0.115 R)
• M4: 1,502,411 km (0.113 R)
• M5: 2,077,166 km (0.111 R)
• M6: 3,657,219 km (0.042 R)
• M7: 4,305,128 km (0.061 R)
• M8: 4,813,910 km (0.05 R)
• M9: 5,500,265 km (0.066 R)
• M10: 6,150,567 km (0.116 R)
• M11: 6,905,438 km (0.111 R)
• M12: 7,779,837 km (0.069 R)
• M13: 10,271,091 km (0.101 R)
• M14: 11,071,140 km (0.059 R)
• M15: 11,678,807 km (0.065 R)
• M16: 12,188,786 km (0.079 R)
• M17: 13,002,449 km (0.118 R)
• M18: 13,550,426 km (0.052 R)
• M19: 14,513,088 km (0.062 R)
• M20: 15,661,551 km (0.076 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 826.4

Radius: 13.8

Gravity: 4.34 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 3.76 AU - 3.96 AU

Year: 4975 Days

Day: 9.2 Hours

Environment

Temp: -212 °C

Axial Tilt: 19.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 50,186,612 km

• M1: 171,589 km (0.042 R)
• M2: 634,594 km (0.102 R)
• M3: 1,120,937 km (0.057 R)
• M4: 1,825,244 km (0.08 R)
• M5: 4,373,793 km (0.067 R)
• M6: 4,996,718 km (0.052 R)
• M7: 5,531,381 km (0.095 R)
• M8: 10,413,957 km (0.055 R)
• M9: 10,961,784 km (0.118 R)
• M10: 12,065,517 km (0.099 R)
• M11: 13,242,104 km (0.096 R)
• M12: 13,777,066 km (0.116 R)
• M13: 16,794,904 km (0.105 R)
• M14: 17,358,589 km (0.038 R)
• M15: 17,870,363 km (0.092 R)
• M16: 19,672,270 km (0.093 R)
• M17: 20,939,214 km (0.055 R)
• M18: 22,409,761 km (0.057 R)
• M19: 22,864,090 km (0.055 R)
• M20: 24,105,902 km (0.084 R)
• M21: 24,663,004 km (0.058 R)
• M22: 25,228,783 km (0.091 R)
• M23: 26,723,565 km (0.108 R)
• M24: 28,276,541 km (0.11 R)
• M25: 29,889,056 km (0.074 R)
• M26: 32,037,581 km (0.115 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 74.6

Radius: 14.3

Gravity: 0.36 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 4.78 AU - 6.52 AU

Year: 8810 Days

Day: 7.9 Hours

Environment

Temp: -215 °C

Axial Tilt: 98.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 50,186,612 km

• M1: 178,470 km (0.106 R)
• M2: 635,791 km (0.092 R)
• M3: 1,836,164 km (0.083 R)
• M4: 3,077,079 km (0.119 R)
• M5: 4,000,247 km (0.087 R)
• M6: 4,461,756 km (0.031 R)
• M7: 7,393,875 km (0.064 R)
• M8: 12,496,658 km (0.078 R)
• M9: 13,078,295 km (0.102 R)
• M10: 13,865,927 km (0.104 R)
• M11: 15,741,286 km (0.035 R)
• M12: 17,282,444 km (0.103 R)
• M13: 17,948,753 km (0.084 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.91 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 98

Radius: 7

Gravity: 2 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 6.83 AU - 6.99 AU

Year: 11916 Days

Day: 24.3 Hours

Environment

Temp: -231 °C

Axial Tilt: 8.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 50,186,612 km

• M1: 143,315 km (0.085 R)
• M2: 531,222 km (0.116 R)
• M3: 1,181,374 km (0.106 R)
• M4: 1,453,044 km (0.092 R)
• M5: 2,198,042 km (0.062 R)
• M6: 2,496,190 km (0.111 R)
• M7: 6,307,495 km (0.117 R)
• M8: 10,140,791 km (0.067 R)
• M9: 18,204,415 km (0.059 R)
• M10: 19,229,609 km (0.094 R)
• M11: 20,701,503 km (0.042 R)
• M12: 22,318,955 km (0.094 R)
• M13: 22,974,343 km (0.108 R)
• M14: 25,251,223 km (0.096 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.22 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 233.1

Radius: 4.2

Gravity: 13.21 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 7.32 AU - 11.12 AU

Year: 18366 Days

Day: 22.4 Hours

Environment

Temp: -226 °C

Axial Tilt: 21.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 50,186,612 km

• M1: 52,210 km (0.113 R)
• M2: 864,077 km (0.117 R)
• M3: 1,017,266 km (0.112 R)
• M4: 1,517,072 km (0.1 R)
• M5: 3,846,760 km (0.109 R)
• M6: 4,010,569 km (0.12 R)
• M7: 6,356,713 km (0.082 R)
• M8: 7,990,471 km (0.084 R)
• M9: 8,484,593 km (0.051 R)
• M10: 9,190,994 km (0.082 R)
• M11: 10,773,291 km (0.119 R)
• M12: 12,000,592 km (0.117 R)
• M13: 12,174,873 km (0.1 R)
• M14: 12,768,178 km (0.095 R)
• M15: 13,442,565 km (0.1 R)
• M16: 14,269,991 km (0.066 R)
• M17: 15,130,777 km (0.085 R)
• M18: 19,475,249 km (0.085 R)
• M19: 20,450,328 km (0.114 R)
• M20: 21,886,767 km (0.076 R)
• M21: 22,234,283 km (0.042 R)
• M22: 23,119,005 km (0.096 R)
• M23: 23,843,657 km (0.117 R)
• M24: 26,794,475 km (0.098 R)
• M25: 27,292,187 km (0.049 R)
• M26: 27,694,755 km (0.112 R)
• M27: 30,086,525 km (0.11 R)
• M28: 30,840,947 km (0.086 R)
• M29: 34,334,058 km (0.104 R)
• M30: 35,395,455 km (0.101 R)
• M31: 41,826,069 km (0.092 R)
• M32: 43,036,166 km (0.044 R)
• M33: 48,993,003 km (0.051 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 407 - 20,220 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit