🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.73

Radius: 1.49

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 0.44 AU - 0.7 AU

Year: 282 Days

Day: 26.2 Hours

Environment

Temp: -117 °C

Axial Tilt: 1.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 63,499,495 km

• M1: 612,753 km (0.117 R)

Planet 2 - Gas Giant

Semi-Major Axis: 1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 818.5

Radius: 8.9

Gravity: 10.33 G

Time & Orbit

Eccentricity (e): 0.227

Orbit Range: 0.77 AU - 1.23 AU

Year: 656 Days

Day: 6.3 Hours

Environment

Temp: -161 °C

Axial Tilt: 18 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 63,499,495 km

• M1: 110,702 km (0.116 R)
• M2: 562,189 km (0.084 R)
• M3: 844,630 km (0.098 R)
• M4: 1,193,492 km (0.089 R)
• M5: 1,936,245 km (0.104 R)
• M6: 2,220,481 km (0.083 R)
• M7: 2,898,459 km (0.083 R)
• M8: 4,181,260 km (0.114 R)
• M9: 4,744,347 km (0.088 R)
• M10: 5,053,117 km (0.076 R)
• M11: 5,560,254 km (0.114 R)
• M12: 5,845,686 km (0.061 R)
• M13: 6,140,993 km (0.095 R)
• M14: 7,332,540 km (0.06 R)
• M15: 7,793,301 km (0.094 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 324.6

Radius: 13.2

Gravity: 1.86 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 2.81 AU - 3.13 AU

Year: 3358 Days

Day: 10.6 Hours

Environment

Temp: -197 °C

Axial Tilt: 33.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 63,499,495 km

• M1: 183,706 km (0.117 R)
• M2: 795,412 km (0.108 R)
• M3: 1,442,722 km (0.059 R)
• M4: 2,057,270 km (0.119 R)
• M5: 3,092,038 km (0.093 R)
• M6: 3,989,626 km (0.097 R)
• M7: 5,031,724 km (0.107 R)
• M8: 5,863,788 km (0.089 R)
• M9: 7,123,252 km (0.085 R)
• M10: 7,561,125 km (0.057 R)
• M11: 8,016,950 km (0.086 R)
• M12: 8,491,175 km (0.045 R)
• M13: 9,288,981 km (0.073 R)
• M14: 9,812,573 km (0.068 R)
• M15: 10,653,762 km (0.089 R)
• M16: 11,384,398 km (0.096 R)
• M17: 12,563,828 km (0.119 R)
• M18: 13,379,734 km (0.092 R)
• M19: 16,846,815 km (0.099 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 227.8

Radius: 13.5

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.204

Orbit Range: 3.08 AU - 4.66 AU

Year: 4994 Days

Day: 11 Hours

Environment

Temp: -213 °C

Axial Tilt: 49.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 63,499,495 km

• M1: 167,849 km (0.058 R)
• M2: 603,927 km (0.077 R)
• M3: 1,226,852 km (0.106 R)
• M4: 2,376,213 km (0.077 R)
• M5: 3,397,068 km (0.11 R)
• M6: 4,851,609 km (0.082 R)
• M7: 5,603,787 km (0.07 R)
• M8: 6,630,776 km (0.112 R)
• M9: 8,102,819 km (0.069 R)
• M10: 10,237,281 km (0.085 R)
• M11: 10,824,902 km (0.101 R)
• M12: 13,219,964 km (0.06 R)
• M13: 17,723,309 km (0.115 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.29 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 40.3

Radius: 9.4

Gravity: 0.46 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 4.39 AU - 6.19 AU

Year: 7982 Days

Day: 14.8 Hours

Environment

Temp: -221 °C

Axial Tilt: 21 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 63,499,495 km

• M1: 116,986 km (0.041 R)
• M2: 458,966 km (0.059 R)
• M3: 2,330,286 km (0.097 R)
• M4: 3,625,804 km (0.117 R)
• M5: 5,508,942 km (0.096 R)
• M6: 7,644,750 km (0.07 R)
• M7: 9,354,355 km (0.058 R)
• M8: 10,748,308 km (0.093 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 75.1

Radius: 14.6

Gravity: 0.35 G

Time & Orbit

Eccentricity (e): 0.014

Orbit Range: 5.8 AU - 5.96 AU

Year: 9354 Days

Day: 7.4 Hours

Environment

Temp: -230 °C

Axial Tilt: 28.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 63,499,495 km

• M1: 195,824 km (0.078 R)
• M2: 1,329,027 km (0.07 R)
• M3: 2,455,200 km (0.052 R)
• M4: 3,171,176 km (0.077 R)
• M5: 5,024,095 km (0.115 R)
• M6: 5,832,522 km (0.111 R)
• M7: 6,580,661 km (0.056 R)
• M8: 7,969,677 km (0.081 R)
• M9: 9,288,233 km (0.082 R)
• M10: 19,015,385 km (0.064 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.51 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 579.3

Radius: 5.3

Gravity: 20.62 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 6.59 AU - 8.43 AU

Year: 13501 Days

Day: 20.9 Hours

Environment

Temp: -233 °C

Axial Tilt: 93.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 63,499,495 km

• M1: 76,744 km (0.094 R)
• M2: 528,529 km (0.041 R)
• M3: 869,313 km (0.109 R)
• M4: 1,729,501 km (0.102 R)
• M5: 1,982,022 km (0.067 R)
• M6: 2,258,928 km (0.034 R)
• M7: 3,100,565 km (0.106 R)
• M8: 4,618,236 km (0.079 R)
• M9: 5,379,240 km (0.096 R)
• M10: 5,807,838 km (0.049 R)
• M11: 6,493,146 km (0.088 R)
• M12: 7,445,486 km (0.068 R)
• M13: 9,368,118 km (0.095 R)
• M14: 10,856,617 km (0.119 R)
• M15: 12,071,651 km (0.105 R)
• M16: 12,619,179 km (0.1 R)
• M17: 13,056,304 km (0.118 R)
• M18: 14,360,947 km (0.072 R)
• M19: 16,403,556 km (0.113 R)
• M20: 20,112,237 km (0.08 R)
• M21: 22,205,410 km (0.087 R)
• M22: 25,118,380 km (0.07 R)
• M23: 30,004,995 km (0.115 R)
• M24: 30,448,103 km (0.107 R)
• M25: 30,783,203 km (0.066 R)
• M26: 34,391,204 km (0.103 R)
• M27: 40,517,985 km (0.111 R)
• M28: 40,923,395 km (0.031 R)
• M29: 47,633,159 km (0.058 R)
• M30: 54,710,185 km (0.09 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.94 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 739.3

Radius: 7.9

Gravity: 11.85 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 7.54 AU - 8.34 AU

Year: 14677 Days

Day: 20.4 Hours

Environment

Temp: -225 °C

Axial Tilt: 15.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 63,499,495 km

• M1: 98,286 km (0.07 R)
• M2: 372,798 km (0.115 R)
• M3: 773,271 km (0.115 R)
• M4: 1,100,891 km (0.114 R)
• M5: 1,810,134 km (0.111 R)
• M6: 2,356,017 km (0.058 R)
• M7: 3,156,066 km (0.119 R)
• M8: 5,875,756 km (0.107 R)
• M9: 9,752,584 km (0.103 R)
• M10: 15,281,722 km (0.116 R)
• M11: 16,408,792 km (0.026 R)
• M12: 16,718,460 km (0.061 R)
• M13: 17,833,263 km (0.086 R)
• M14: 18,325,889 km (0.095 R)
• M15: 18,912,013 km (0.066 R)
• M16: 20,655,576 km (0.103 R)
• M17: 22,886,230 km (0.073 R)
• M18: 24,762,337 km (0.089 R)
• M19: 25,894,195 km (0.099 R)
• M20: 26,208,799 km (0.029 R)
• M21: 27,492,797 km (0.117 R)
• M22: 33,667,599 km (0.119 R)
• M23: 34,168,004 km (0.099 R)
• M24: 35,698,989 km (0.103 R)
• M25: 38,623,777 km (0.1 R)
• M26: 41,132,533 km (0.107 R)
• M27: 43,747,803 km (0.11 R)
• M28: 47,875,657 km (0.105 R)
• M29: 51,590,621 km (0.071 R)
• M30: 51,922,429 km (0.077 R)
• M31: 54,973,478 km (0.115 R)
• M32: 56,542,909 km (0.084 R)
• M33: 59,224,600 km (0.104 R)
• M34: 62,365,108 km (0.068 R)
• M35: 62,930,588 km (0.097 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: 380 - 17,167 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit