🌌 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: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.43

Radius: 0.71

Gravity: 0.85 G

Time & Orbit

Eccentricity (e): 0.006

Orbit Range: 0.55 AU - 0.55 AU

Year: 263 Days

Day: 41.3 Hours

Environment

Temp: -129 °C

Axial Tilt: 24.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 85,591,227 km

• M1: 16,605 km (0.058 R)
• M2: 115,340 km (0.106 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.57

Radius: 1.2

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 0.53 AU - 0.65 AU

Year: 293 Days

Day: 42.6 Hours

Environment

Temp: -127 °C

Axial Tilt: 30 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 738.5

Radius: 11.8

Gravity: 5.3 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 0.78 AU - 0.88 AU

Year: 488 Days

Day: 13.6 Hours

Environment

Temp: -138 °C

Axial Tilt: 22.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 85,591,227 km

• M1: 153,787 km (0.077 R)
• M2: 585,975 km (0.085 R)
• M3: 1,028,635 km (0.096 R)
• M4: 1,691,354 km (0.109 R)
• M5: 2,191,908 km (0.109 R)
• M6: 2,613,176 km (0.106 R)
• M7: 3,181,199 km (0.088 R)
• M8: 3,964,792 km (0.089 R)
• M9: 4,999,710 km (0.08 R)
• M10: 5,427,261 km (0.094 R)
• M11: 6,469,809 km (0.082 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 45.6

Radius: 10.6

Gravity: 0.41 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 0.92 AU - 1.32 AU

Year: 765 Days

Day: 12.4 Hours

Environment

Temp: -159 °C

Axial Tilt: 156.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 85,591,227 km

• M1: 131,796 km (0.115 R)
• M2: 547,977 km (0.118 R)
• M3: 1,749,547 km (0.115 R)
• M4: 2,079,710 km (0.105 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 517.6

Radius: 13

Gravity: 3.06 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 1.57 AU - 2.05 AU

Year: 1572 Days

Day: 10 Hours

Environment

Temp: -190 °C

Axial Tilt: 24.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 85,591,227 km

• M1: 161,715 km (0.115 R)
• M2: 1,174,044 km (0.101 R)
• M3: 1,638,994 km (0.07 R)
• M4: 2,228,111 km (0.034 R)
• M5: 2,956,054 km (0.088 R)
• M6: 3,453,317 km (0.111 R)
• M7: 4,023,435 km (0.05 R)
• M8: 4,966,500 km (0.043 R)
• M9: 5,458,976 km (0.115 R)
• M10: 6,074,721 km (0.089 R)
• M11: 6,711,858 km (0.117 R)
• M12: 7,791,506 km (0.076 R)
• M13: 8,344,868 km (0.047 R)
• M14: 8,894,790 km (0.032 R)
• M15: 10,359,653 km (0.101 R)
• M16: 10,825,650 km (0.082 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 651.3

Radius: 9.2

Gravity: 7.69 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 1.84 AU - 2.3 AU

Year: 1923 Days

Day: 11.6 Hours

Environment

Temp: -194 °C

Axial Tilt: 38.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 85,591,227 km

• M1: 116,238 km (0.099 R)
• M2: 543,788 km (0.081 R)
• M3: 1,097,151 km (0.062 R)
• M4: 1,497,325 km (0.094 R)
• M5: 1,827,637 km (0.081 R)
• M6: 2,256,085 km (0.115 R)
• M7: 2,569,044 km (0.1 R)
• M8: 3,031,750 km (0.068 R)
• M9: 3,566,413 km (0.107 R)
• M10: 3,883,710 km (0.096 R)
• M11: 4,698,570 km (0.039 R)
• M12: 5,059,250 km (0.052 R)
• M13: 5,484,108 km (0.108 R)
• M14: 6,903,493 km (0.095 R)
• M15: 7,483,484 km (0.101 R)
• M16: 8,460,208 km (0.106 R)
• M17: 8,963,306 km (0.093 R)
• M18: 9,755,427 km (0.108 R)
• M19: 13,353,256 km (0.117 R)
• M20: 13,777,066 km (0.099 R)
• M21: 14,876,162 km (0.11 R)
• M22: 15,516,441 km (0.085 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 426

Radius: 13.3

Gravity: 2.41 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 5.37 AU - 5.95 AU

Year: 8694 Days

Day: 13.5 Hours

Environment

Temp: -228 °C

Axial Tilt: 39.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 85,591,227 km

• M1: 173,085 km (0.085 R)
• M2: 1,033,422 km (0.107 R)
• M3: 1,925,624 km (0.084 R)
• M4: 2,875,421 km (0.107 R)
• M5: 3,848,256 km (0.108 R)
• M6: 5,204,211 km (0.107 R)
• M7: 6,171,959 km (0.045 R)
• M8: 11,225,675 km (0.091 R)
• M9: 12,783,736 km (0.066 R)
• M10: 18,459,779 km (0.109 R)
• M11: 21,535,361 km (0.094 R)
• M12: 24,768,171 km (0.036 R)
• M13: 30,301,049 km (0.108 R)
• M14: 32,789,011 km (0.047 R)
• M15: 37,270,664 km (0.107 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.54 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 742.7

Radius: 7.6

Gravity: 12.86 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 7.2 AU - 9.88 AU

Year: 16114 Days

Day: 23.8 Hours

Environment

Temp: -223 °C

Axial Tilt: 2.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 85,591,227 km

• M1: 94,546 km (0.115 R)
• M2: 387,159 km (0.06 R)
• M3: 627,114 km (0.048 R)
• M4: 1,742,965 km (0.069 R)
• M5: 2,069,238 km (0.06 R)
• M6: 2,501,426 km (0.097 R)
• M7: 3,435,515 km (0.031 R)
• M8: 4,196,968 km (0.043 R)
• M9: 7,067,003 km (0.074 R)
• M10: 7,569,203 km (0.078 R)
• M11: 15,210,513 km (0.078 R)
• M12: 17,156,183 km (0.111 R)
• M13: 20,240,891 km (0.093 R)
• M14: 25,321,534 km (0.11 R)
• M15: 27,261,220 km (0.039 R)
• M16: 31,312,630 km (0.11 R)
• M17: 33,417,920 km (0.09 R)
• M18: 41,455,664 km (0.106 R)
• M19: 43,535,673 km (0.066 R)
• M20: 43,990,301 km (0.067 R)
• M21: 44,295,032 km (0.119 R)
• M22: 45,996,857 km (0.095 R)
• M23: 51,701,323 km (0.033 R)
• M24: 61,971,068 km (0.032 R)
• M25: 67,682,415 km (0.097 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.82 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 987.9

Radius: 6.4

Gravity: 24.12 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 8.24 AU - 11.4 AU

Year: 19869 Days

Day: 19.7 Hours

Environment

Temp: -239 °C

Axial Tilt: 10.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 85,591,227 km

• M1: 79,586 km (0.106 R)
• M2: 499,657 km (0.119 R)
• M3: 977,772 km (0.045 R)
• M4: 1,232,387 km (0.09 R)
• M5: 1,916,798 km (0.102 R)
• M6: 2,777,883 km (0.041 R)
• M7: 3,042,222 km (0.087 R)
• M8: 3,470,222 km (0.041 R)
• M9: 4,661,470 km (0.063 R)
• M10: 5,270,034 km (0.105 R)
• M11: 5,887,275 km (0.044 R)
• M12: 8,402,912 km (0.06 R)
• M13: 9,071,465 km (0.118 R)
• M14: 10,325,843 km (0.08 R)
• M15: 11,896,322 km (0.07 R)
• M16: 12,312,503 km (0.111 R)
• M17: 14,075,065 km (0.1 R)
• M18: 14,540,614 km (0.042 R)
• M19: 16,082,968 km (0.111 R)
• M20: 19,298,873 km (0.057 R)
• M21: 21,768,435 km (0.076 R)
• M22: 23,239,580 km (0.097 R)
• M23: 24,552,302 km (0.06 R)
• M24: 24,775,801 km (0.088 R)
• M25: 26,730,596 km (0.071 R)
• M26: 27,444,477 km (0.098 R)
• M27: 29,536,005 km (0.117 R)
• M28: 30,170,749 km (0.051 R)
• M29: 34,590,618 km (0.065 R)
• M30: 40,347,892 km (0.105 R)
• M31: 41,761,742 km (0.079 R)
• M32: 47,227,898 km (0.104 R)
• M33: 56,195,243 km (0.105 R)
• M34: 71,104,167 km (0.091 R)
• M35: 71,331,107 km (0.091 R)
• M36: 76,684,467 km (0.099 R)
• M37: 81,303,900 km (0.101 R)
• M38: 83,051,502 km (0.053 R)
• M39: 83,303,126 km (0.081 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 485 - 18,786 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit