🌌 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: 0.28

Radius: 0.6

Gravity: 0.78 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 0.42 AU - 0.6 AU

Year: 239 Days

Day: 31.7 Hours

Environment

Temp: -122 °C

Axial Tilt: 27.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.86

Radius: 1.88

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 0.53 AU - 0.55 AU

Year: 260 Days

Day: 38.7 Hours

Environment

Temp: -130 °C

Axial Tilt: 28.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 101.1

Radius: 12.6

Gravity: 0.64 G

Time & Orbit

Eccentricity (e): 0.145

Orbit Range: 0.69 AU - 0.93 AU

Year: 478 Days

Day: 9.1 Hours

Environment

Temp: -149 °C

Axial Tilt: 11.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 57,709,781 km

• M1: 156,928 km (0.101 R)
• M2: 556,654 km (0.105 R)
• M3: 1,210,696 km (0.082 R)
• M4: 2,068,939 km (0.03 R)
• M5: 2,731,657 km (0.074 R)
• M6: 3,215,008 km (0.078 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 752.7

Radius: 11

Gravity: 6.22 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 1.14 AU - 1.22 AU

Year: 841 Days

Day: 9.7 Hours

Environment

Temp: -175 °C

Axial Tilt: 6.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 57,709,781 km

• M1: 136,732 km (0.114 R)
• M2: 517,758 km (0.084 R)
• M3: 1,178,083 km (0.032 R)
• M4: 1,736,382 km (0.042 R)
• M5: 2,521,323 km (0.101 R)
• M6: 3,091,889 km (0.118 R)
• M7: 3,471,568 km (0.102 R)
• M8: 3,836,886 km (0.07 R)
• M9: 4,358,833 km (0.113 R)
• M10: 4,802,840 km (0.026 R)
• M11: 5,202,116 km (0.091 R)
• M12: 6,192,604 km (0.118 R)
• M13: 6,889,880 km (0.12 R)
• M14: 8,209,931 km (0.06 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 971.5

Radius: 10

Gravity: 9.72 G

Time & Orbit

Eccentricity (e): 0.199

Orbit Range: 2.35 AU - 3.53 AU

Year: 3307 Days

Day: 6 Hours

Environment

Temp: -195 °C

Axial Tilt: 9.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 57,709,781 km

• M1: 125,812 km (0.12 R)
• M2: 448,494 km (0.078 R)
• M3: 788,979 km (0.091 R)
• M4: 1,204,412 km (0.082 R)
• M5: 1,621,342 km (0.046 R)
• M6: 3,048,206 km (0.054 R)
• M7: 3,625,056 km (0.093 R)
• M8: 4,458,615 km (0.112 R)
• M9: 5,550,231 km (0.096 R)
• M10: 6,056,919 km (0.069 R)
• M11: 6,532,939 km (0.105 R)
• M12: 6,874,471 km (0.091 R)
• M13: 7,293,495 km (0.081 R)
• M14: 9,143,123 km (0.034 R)
• M15: 9,492,434 km (0.032 R)
• M16: 10,053,725 km (0.115 R)
• M17: 11,066,951 km (0.104 R)
• M18: 12,008,221 km (0.096 R)
• M19: 12,427,694 km (0.116 R)
• M20: 12,856,740 km (0.089 R)
• M21: 14,725,966 km (0.114 R)
• M22: 17,471,087 km (0.111 R)
• M23: 17,829,224 km (0.094 R)
• M24: 18,375,555 km (0.104 R)
• M25: 19,310,692 km (0.105 R)
• M26: 24,099,020 km (0.113 R)
• M27: 24,468,527 km (0.08 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 359.7

Radius: 13.7

Gravity: 1.92 G

Time & Orbit

Eccentricity (e): 0.249

Orbit Range: 3.27 AU - 5.43 AU

Year: 5952 Days

Day: 14.1 Hours

Environment

Temp: -203 °C

Axial Tilt: 19.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 57,709,781 km

• M1: 176,825 km (0.066 R)
• M2: 1,449,603 km (0.111 R)
• M3: 2,664,787 km (0.087 R)
• M4: 3,949,833 km (0.066 R)
• M5: 5,530,783 km (0.034 R)
• M6: 6,745,368 km (0.091 R)
• M7: 8,795,906 km (0.097 R)
• M8: 9,779,662 km (0.112 R)
• M9: 15,943,991 km (0.111 R)
• M10: 19,146,283 km (0.1 R)
• M11: 25,372,996 km (0.096 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.68 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 516.8

Radius: 6.9

Gravity: 10.85 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 5.01 AU - 8.35 AU

Year: 11326 Days

Day: 18.6 Hours

Environment

Temp: -229 °C

Axial Tilt: 156.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 57,709,781 km

• M1: 86,318 km (0.114 R)
• M2: 335,099 km (0.116 R)
• M3: 632,051 km (0.111 R)
• M4: 1,313,170 km (0.119 R)
• M5: 2,502,473 km (0.104 R)
• M6: 3,718,853 km (0.109 R)
• M7: 4,035,403 km (0.102 R)
• M8: 5,222,312 km (0.103 R)
• M9: 6,326,943 km (0.068 R)
• M10: 7,012,699 km (0.106 R)
• M11: 7,874,234 km (0.08 R)
• M12: 8,531,417 km (0.12 R)
• M13: 10,987,365 km (0.114 R)
• M14: 11,202,188 km (0.079 R)
• M15: 12,032,755 km (0.085 R)
• M16: 12,844,473 km (0.111 R)
• M17: 15,231,008 km (0.084 R)
• M18: 17,676,933 km (0.104 R)
• M19: 18,421,183 km (0.116 R)
• M20: 20,292,353 km (0.119 R)
• M21: 21,025,532 km (0.078 R)
• M22: 21,440,516 km (0.105 R)
• M23: 25,051,360 km (0.038 R)
• M24: 30,083,384 km (0.054 R)
• M25: 31,899,801 km (0.073 R)
• M26: 32,118,214 km (0.079 R)
• M27: 33,337,437 km (0.118 R)
• M28: 36,222,282 km (0.102 R)
• M29: 38,522,948 km (0.052 R)
• M30: 39,019,463 km (0.073 R)
• M31: 39,394,654 km (0.086 R)
• M32: 42,747,442 km (0.074 R)
• M33: 43,413,452 km (0.072 R)
• M34: 46,846,872 km (0.092 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.56 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 235.9

Radius: 7.4

Gravity: 4.31 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 8.04 AU - 13.08 AU

Year: 22512 Days

Day: 23.1 Hours

Environment

Temp: -230 °C

Axial Tilt: 29.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 57,709,781 km

• M1: 92,003 km (0.078 R)
• M2: 385,215 km (0.119 R)
• M3: 765,941 km (0.091 R)
• M4: 1,152,203 km (0.027 R)
• M5: 1,468,453 km (0.111 R)
• M6: 2,143,887 km (0.103 R)
• M7: 3,130,485 km (0.054 R)
• M8: 4,483,897 km (0.112 R)
• M9: 4,867,466 km (0.09 R)
• M10: 5,810,680 km (0.118 R)
• M11: 6,424,331 km (0.062 R)
• M12: 6,665,333 km (0.116 R)
• M13: 8,621,475 km (0.097 R)
• M14: 9,678,234 km (0.069 R)
• M15: 10,210,653 km (0.105 R)
• M16: 12,228,878 km (0.109 R)
• M17: 14,775,333 km (0.105 R)
• M18: 15,625,049 km (0.096 R)
• M19: 16,061,875 km (0.073 R)
• M20: 16,506,779 km (0.087 R)
• M21: 19,939,751 km (0.118 R)
• M22: 21,329,964 km (0.059 R)
• M23: 22,048,931 km (0.113 R)
• M24: 22,783,756 km (0.074 R)
• M25: 27,434,604 km (0.094 R)
• M26: 30,712,443 km (0.071 R)
• M27: 31,513,240 km (0.058 R)
• M28: 32,563,118 km (0.108 R)
• M29: 38,956,782 km (0.111 R)
• M30: 44,086,193 km (0.119 R)
• M31: 45,841,874 km (0.087 R)
• M32: 47,340,097 km (0.11 R)
• M33: 48,254,588 km (0.1 R)
• M34: 53,167,682 km (0.106 R)
• M35: 54,654,086 km (0.118 R)
• M36: 56,508,202 km (0.091 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 160 - 15,072 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit