🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.72

Radius: 1.24

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 0.55 AU - 0.79 AU

Year: 195 Days

Day: 40.7 Hours

Environment

Temp: 153 °C

Axial Tilt: 26.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 2.28 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.61

Radius: 0.82

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 2.08 AU - 2.48 AU

Year: 1227 Days

Day: 32 Hours

Environment

Temp: -61 °C

Axial Tilt: 19.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 4.03 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.98

Radius: 1.55

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 3.66 AU - 4.4 AU

Year: 2884 Days

Day: 17.9 Hours

Environment

Temp: -121 °C

Axial Tilt: 33.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 99,435,126 km

• M1: 363,672 km (0.119 R)

Asteroid Belt

Center: 4.94 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 4 - Gas Giant

Semi-Major Axis: 5.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 481.1

Radius: 8.6

Gravity: 6.5 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 5.62 AU - 6.06 AU

Year: 5031 Days

Day: 12.5 Hours

Environment

Temp: -135 °C

Axial Tilt: 5.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (86)

Outer Limit: 99,435,126 km

• M1: 113,694 km (0.058 R)
• M2: 200,611 km (0.069 R)
• M3: 282,740 km (0.066 R)
• M4: 531,372 km (0.086 R)
• M5: 702,960 km (0.116 R)
• M6: 1,072,916 km (0.078 R)
• M7: 1,126,622 km (0.111 R)
• M8: 1,236,726 km (0.058 R)
• M9: 1,293,274 km (0.109 R)
• M10: 1,697,637 km (0.089 R)
• M11: 1,776,774 km (0.092 R)
• M12: 1,841,101 km (0.062 R)
• M13: 2,173,956 km (0.109 R)
• M14: 2,454,003 km (0.102 R)
• M15: 2,507,859 km (0.102 R)
• M16: 2,562,013 km (0.064 R)
• M17: 2,616,766 km (0.069 R)
• M18: 2,801,669 km (0.115 R)
• M19: 2,990,910 km (0.093 R)
• M20: 3,067,804 km (0.093 R)
• M21: 3,342,316 km (0.09 R)
• M22: 3,624,607 km (0.07 R)
• M23: 4,852,656 km (0.063 R)
• M24: 5,241,909 km (0.11 R)
• M25: 5,311,622 km (0.12 R)
• M26: 5,522,854 km (0.116 R)
• M27: 5,665,122 km (0.112 R)
• M28: 6,197,391 km (0.082 R)
• M29: 7,335,232 km (0.095 R)
• M30: 7,544,221 km (0.114 R)
• M31: 7,781,782 km (0.091 R)
• M32: 8,075,293 km (0.097 R)
• M33: 8,508,977 km (0.083 R)
• M34: 8,618,483 km (0.082 R)
• M35: 8,922,316 km (0.108 R)
• M36: 9,089,567 km (0.118 R)
• M37: 9,257,864 km (0.074 R)
• M38: 9,342,237 km (0.043 R)
• M39: 9,483,757 km (0.082 R)
• M40: 9,711,445 km (0.104 R)
• M41: 10,172,506 km (0.113 R)
• M42: 10,552,335 km (0.108 R)
• M43: 10,640,597 km (0.113 R)
• M44: 11,175,709 km (0.117 R)
• M45: 11,325,756 km (0.078 R)
• M46: 11,597,874 km (0.044 R)
• M47: 11,933,273 km (0.078 R)
• M48: 12,056,092 km (0.095 R)
• M49: 12,395,829 km (0.118 R)
• M50: 12,676,176 km (0.071 R)
• M51: 12,895,636 km (0.111 R)
• M52: 13,338,445 km (0.114 R)
• M53: 14,141,487 km (0.1 R)
• M54: 14,663,733 km (0.042 R)
• M55: 15,158,902 km (0.098 R)
• M56: 15,996,650 km (0.112 R)
• M57: 16,335,938 km (0.068 R)
• M58: 16,404,005 km (0.105 R)
• M59: 16,711,877 km (0.107 R)
• M60: 16,849,208 km (0.076 R)
• M61: 17,159,773 km (0.091 R)
• M62: 17,402,720 km (0.102 R)
• M63: 17,576,852 km (0.089 R)
• M64: 18,421,033 km (0.089 R)
• M65: 18,598,456 km (0.053 R)
• M66: 18,669,665 km (0.109 R)
• M67: 18,812,231 km (0.096 R)
• M68: 18,919,493 km (0.078 R)
• M69: 19,422,441 km (0.081 R)
• M70: 20,368,049 km (0.081 R)
• M71: 20,551,606 km (0.064 R)
• M72: 21,403,117 km (0.113 R)
• M73: 21,589,815 km (0.086 R)
• M74: 22,190,750 km (0.102 R)
• M75: 22,493,237 km (0.102 R)
• M76: 22,682,927 km (0.1 R)
• M77: 23,447,372 km (0.108 R)
• M78: 23,794,140 km (0.116 R)
• M79: 24,220,194 km (0.077 R)
• M80: 24,453,717 km (0.109 R)
• M81: 24,962,050 km (0.068 R)
• M82: 25,237,310 km (0.114 R)
• M83: 25,751,179 km (0.092 R)
• M84: 25,949,695 km (0.099 R)
• M85: 26,628,571 km (0.06 R)
• M86: 26,909,665 km (0.082 R)

Planet 5 - Gas Giant

Semi-Major Axis: 8.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 227.4

Radius: 8.9

Gravity: 2.87 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 6.55 AU - 10.77 AU

Year: 9084 Days

Day: 9.6 Hours

Environment

Temp: -167 °C

Axial Tilt: 38.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (53)

Outer Limit: 99,435,126 km

• M1: 255,962 km (0.034 R)
• M2: 447,148 km (0.082 R)
• M3: 601,234 km (0.06 R)
• M4: 825,780 km (0.025 R)
• M5: 990,488 km (0.086 R)
• M6: 1,181,225 km (0.091 R)
• M7: 1,368,073 km (0.052 R)
• M8: 1,718,132 km (0.04 R)
• M9: 1,985,313 km (0.057 R)
• M10: 2,381,598 km (0.046 R)
• M11: 2,905,939 km (0.107 R)
• M12: 3,465,584 km (0.057 R)
• M13: 3,735,010 km (0.085 R)
• M14: 4,104,966 km (0.068 R)
• M15: 4,905,015 km (0.049 R)
• M16: 5,857,953 km (0.119 R)
• M17: 6,017,874 km (0.027 R)
• M18: 6,206,217 km (0.119 R)
• M19: 8,948,945 km (0.108 R)
• M20: 9,443,366 km (0.116 R)
• M21: 10,426,373 km (0.069 R)
• M22: 10,783,015 km (0.108 R)
• M23: 11,574,986 km (0.113 R)
• M24: 11,708,726 km (0.081 R)
• M25: 12,249,223 km (0.054 R)
• M26: 12,659,869 km (0.108 R)
• M27: 13,424,464 km (0.085 R)
• M28: 14,025,548 km (0.099 R)
• M29: 14,132,660 km (0.108 R)
• M30: 15,107,739 km (0.101 R)
• M31: 15,327,349 km (0.092 R)
• M32: 15,548,155 km (0.039 R)
• M33: 15,955,510 km (0.073 R)
• M34: 17,008,231 km (0.091 R)
• M35: 19,140,748 km (0.12 R)
• M36: 19,856,873 km (0.12 R)
• M37: 19,936,908 km (0.117 R)
• M38: 20,218,152 km (0.105 R)
• M39: 21,151,344 km (0.081 R)
• M40: 21,891,554 km (0.09 R)
• M41: 24,162,599 km (0.107 R)
• M42: 24,806,618 km (0.062 R)
• M43: 25,673,987 km (0.102 R)
• M44: 26,639,790 km (0.114 R)
• M45: 26,949,458 km (0.084 R)
• M46: 27,127,031 km (0.072 R)
• M47: 27,349,483 km (0.102 R)
• M48: 28,471,018 km (0.107 R)
• M49: 29,196,568 km (0.086 R)
• M50: 30,112,256 km (0.116 R)
• M51: 30,250,335 km (0.089 R)
• M52: 30,527,241 km (0.113 R)
• M53: 30,619,842 km (0.095 R)

Planet 6 - Gas Giant

Semi-Major Axis: 11.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 276.5

Radius: 12.1

Gravity: 1.89 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 11.7 AU - 11.78 AU

Year: 14338 Days

Day: 7.1 Hours

Environment

Temp: -184 °C

Axial Tilt: 32.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (80)

Outer Limit: 99,435,126 km

• M1: 176,825 km (0.085 R)
• M2: 307,124 km (0.119 R)
• M3: 444,455 km (0.109 R)
• M4: 550,819 km (0.066 R)
• M5: 637,437 km (0.118 R)
• M6: 793,916 km (0.11 R)
• M7: 999,763 km (0.078 R)
• M8: 1,091,017 km (0.087 R)
• M9: 1,527,693 km (0.099 R)
• M10: 1,656,198 km (0.067 R)
• M11: 1,743,862 km (0.108 R)
• M12: 2,206,419 km (0.118 R)
• M13: 2,706,525 km (0.11 R)
• M14: 3,352,787 km (0.11 R)
• M15: 3,722,743 km (0.102 R)
• M16: 4,016,254 km (0.071 R)
• M17: 5,005,844 km (0.07 R)
• M18: 5,199,573 km (0.081 R)
• M19: 5,494,879 km (0.119 R)
• M20: 6,483,871 km (0.102 R)
• M21: 6,589,337 km (0.096 R)
• M22: 7,270,457 km (0.119 R)
• M23: 7,416,763 km (0.118 R)
• M24: 8,816,102 km (0.104 R)
• M25: 9,486,001 km (0.088 R)
• M26: 9,807,038 km (0.088 R)
• M27: 11,042,417 km (0.086 R)
• M28: 11,210,864 km (0.076 R)
• M29: 11,764,077 km (0.041 R)
• M30: 11,936,265 km (0.094 R)
• M31: 12,282,883 km (0.103 R)
• M32: 12,764,887 km (0.04 R)
• M33: 13,477,123 km (0.099 R)
• M34: 13,883,430 km (0.119 R)
• M35: 14,065,341 km (0.102 R)
• M36: 14,523,560 km (0.096 R)
• M37: 14,615,712 km (0.108 R)
• M38: 14,940,190 km (0.102 R)
• M39: 15,126,589 km (0.086 R)
• M40: 15,737,696 km (0.118 R)
• M41: 16,453,073 km (0.112 R)
• M42: 17,668,855 km (0.088 R)
• M43: 18,212,793 km (0.11 R)
• M44: 19,775,642 km (0.105 R)
• M45: 20,031,753 km (0.076 R)
• M46: 21,855,052 km (0.114 R)
• M47: 21,960,818 km (0.115 R)
• M48: 22,652,708 km (0.102 R)
• M49: 22,759,670 km (0.094 R)
• M50: 23,785,313 km (0.092 R)
• M51: 23,894,071 km (0.101 R)
• M52: 25,323,928 km (0.061 R)
• M53: 25,435,079 km (0.11 R)
• M54: 26,668,364 km (0.114 R)
• M55: 27,235,340 km (0.062 R)
• M56: 29,367,708 km (0.115 R)
• M57: 30,129,759 km (0.113 R)
• M58: 30,601,740 km (0.12 R)
• M59: 31,254,885 km (0.093 R)
• M60: 31,852,678 km (0.118 R)
• M61: 33,059,633 km (0.115 R)
• M62: 33,181,107 km (0.101 R)
• M63: 33,790,868 km (0.101 R)
• M64: 34,959,676 km (0.112 R)
• M65: 35,207,410 km (0.063 R)
• M66: 36,016,585 km (0.112 R)
• M67: 36,769,062 km (0.12 R)
• M68: 37,020,985 km (0.11 R)
• M69: 37,463,346 km (0.076 R)
• M70: 38,225,697 km (0.108 R)
• M71: 39,121,489 km (0.067 R)
• M72: 39,250,143 km (0.114 R)
• M73: 40,348,341 km (0.09 R)
• M74: 40,608,342 km (0.11 R)
• M75: 41,064,466 km (0.108 R)
• M76: 42,311,215 km (0.104 R)
• M77: 42,443,160 km (0.074 R)
• M78: 43,171,402 km (0.105 R)
• M79: 44,371,925 km (0.048 R)
• M80: 44,640,154 km (0.093 R)

Planet 7 - Ice Giant

Semi-Major Axis: 14.04 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 820.9

Radius: 5.6

Gravity: 26.18 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 11.6 AU - 16.48 AU

Year: 18752 Days

Day: 21.4 Hours

Environment

Temp: -193 °C

Axial Tilt: 29.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (94)

Outer Limit: 99,435,126 km

• M1: 89,160 km (0.12 R)
• M2: 934,538 km (0.051 R)
• M3: 1,094,757 km (0.119 R)
• M4: 1,411,157 km (0.064 R)
• M5: 1,626,727 km (0.111 R)
• M6: 1,852,919 km (0.1 R)
• M7: 1,952,851 km (0.057 R)
• M8: 2,020,469 km (0.064 R)
• M9: 2,406,431 km (0.117 R)
• M10: 2,479,136 km (0.096 R)
• M11: 2,815,133 km (0.111 R)
• M12: 2,891,727 km (0.05 R)
• M13: 3,047,009 km (0.088 R)
• M14: 3,165,341 km (0.073 R)
• M15: 3,325,411 km (0.096 R)
• M16: 3,447,184 km (0.119 R)
• M17: 3,821,478 km (0.064 R)
• M18: 3,949,234 km (0.073 R)
• M19: 5,160,079 km (0.098 R)
• M20: 5,396,145 km (0.106 R)
• M21: 5,732,441 km (0.056 R)
• M22: 6,577,370 km (0.11 R)
• M23: 6,936,404 km (0.12 R)
• M24: 8,270,219 km (0.094 R)
• M25: 8,769,427 km (0.069 R)
• M26: 9,680,777 km (0.117 R)
• M27: 10,383,738 km (0.088 R)
• M28: 10,621,748 km (0.085 R)
• M29: 11,530,256 km (0.102 R)
• M30: 12,024,976 km (0.033 R)
• M31: 13,227,444 km (0.109 R)
• M32: 13,615,052 km (0.099 R)
• M33: 14,071,924 km (0.026 R)
• M34: 14,666,725 km (0.1 R)
• M35: 14,800,017 km (0.089 R)
• M36: 15,067,946 km (0.07 R)
• M37: 17,057,000 km (0.112 R)
• M38: 17,267,484 km (0.087 R)
• M39: 17,690,846 km (0.114 R)
• M40: 21,274,762 km (0.094 R)
• M41: 22,645,976 km (0.086 R)
• M42: 23,031,789 km (0.099 R)
• M43: 24,202,542 km (0.096 R)
• M44: 24,518,044 km (0.069 R)
• M45: 25,073,351 km (0.076 R)
• M46: 25,632,847 km (0.053 R)
• M47: 26,358,247 km (0.062 R)
• M48: 26,601,493 km (0.104 R)
• M49: 26,682,725 km (0.058 R)
• M50: 27,994,100 km (0.101 R)
• M51: 28,491,363 km (0.094 R)
• M52: 28,657,716 km (0.064 R)
• M53: 29,662,715 km (0.113 R)
• M54: 30,339,047 km (0.109 R)
• M55: 31,965,774 km (0.105 R)
• M56: 32,052,241 km (0.102 R)
• M57: 32,746,226 km (0.118 R)
• M58: 32,920,507 km (0.092 R)
• M59: 33,095,088 km (0.112 R)
• M60: 35,213,843 km (0.116 R)
• M61: 36,289,751 km (0.101 R)
• M62: 37,012,907 km (0.081 R)
• M63: 37,923,509 km (0.108 R)
• M64: 38,198,171 km (0.046 R)
• M65: 38,565,433 km (0.117 R)
• M66: 39,766,854 km (0.106 R)
• M67: 40,232,253 km (0.057 R)
• M68: 42,017,105 km (0.11 R)
• M69: 44,019,772 km (0.097 R)
• M70: 44,694,159 km (0.109 R)
• M71: 46,053,256 km (0.101 R)
• M72: 46,737,816 km (0.046 R)
• M73: 47,130,510 km (0.085 R)
• M74: 48,811,691 km (0.101 R)
• M75: 49,010,806 km (0.095 R)
• M76: 49,809,808 km (0.1 R)
• M77: 52,232,695 km (0.105 R)
• M78: 53,048,751 km (0.072 R)
• M79: 53,355,876 km (0.101 R)
• M80: 53,663,599 km (0.082 R)
• M81: 54,693,580 km (0.056 R)
• M82: 56,772,990 km (0.068 R)
• M83: 60,473,892 km (0.111 R)
• M84: 63,381,626 km (0.069 R)
• M85: 64,251,837 km (0.063 R)
• M86: 65,784,317 km (0.112 R)
• M87: 66,775,702 km (0.069 R)
• M88: 69,555,680 km (0.086 R)
• M89: 71,129,000 km (0.119 R)
• M90: 71,919,924 km (0.089 R)
• M91: 72,486,751 km (0.111 R)
• M92: 73,967,321 km (0.111 R)
• M93: 74,196,056 km (0.07 R)
• M94: 77,421,984 km (0.11 R)

Planet 8 - Ice Giant

Semi-Major Axis: 17.74 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 862.1

Radius: 5.8

Gravity: 25.63 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 13.46 AU - 22.02 AU

Year: 26633 Days

Day: 22.7 Hours

Environment

Temp: -198 °C

Axial Tilt: 39.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (95)

Outer Limit: 99,435,126 km

• M1: 143,165 km (0.096 R)
• M2: 722,707 km (0.086 R)
• M3: 958,174 km (0.119 R)
• M4: 1,532,481 km (0.07 R)
• M5: 2,362,749 km (0.084 R)
• M6: 5,787,044 km (0.115 R)
• M7: 5,960,428 km (0.108 R)
• M8: 6,671,317 km (0.09 R)
• M9: 6,853,228 km (0.058 R)
• M10: 7,660,309 km (0.092 R)
• M11: 7,914,625 km (0.073 R)
• M12: 8,042,830 km (0.088 R)
• M13: 8,892,845 km (0.032 R)
• M14: 9,227,346 km (0.087 R)
• M15: 9,566,036 km (0.066 R)
• M16: 10,255,532 km (0.101 R)
• M17: 10,325,245 km (0.115 R)
• M18: 11,463,984 km (0.096 R)
• M19: 12,195,667 km (0.092 R)
• M20: 12,866,913 km (0.096 R)
• M21: 13,397,387 km (0.101 R)
• M22: 14,167,517 km (0.115 R)
• M23: 15,589,594 km (0.116 R)
• M24: 16,317,537 km (0.104 R)
• M25: 16,973,973 km (0.084 R)
• M26: 17,222,305 km (0.118 R)
• M27: 17,890,409 km (0.072 R)
• M28: 18,058,707 km (0.118 R)
• M29: 18,312,275 km (0.04 R)
• M30: 19,251,900 km (0.095 R)
• M31: 21,000,250 km (0.108 R)
• M32: 21,445,154 km (0.11 R)
• M33: 22,435,043 km (0.117 R)
• M34: 24,272,404 km (0.075 R)
• M35: 25,020,842 km (0.105 R)
• M36: 27,991,856 km (0.111 R)
• M37: 28,874,932 km (0.06 R)
• M38: 29,171,435 km (0.075 R)
• M39: 29,369,652 km (0.087 R)
• M40: 30,568,081 km (0.119 R)
• M41: 30,668,611 km (0.117 R)
• M42: 31,072,076 km (0.07 R)
• M43: 33,012,510 km (0.051 R)
• M44: 34,467,050 km (0.067 R)
• M45: 36,794,943 km (0.06 R)
• M46: 38,410,899 km (0.118 R)
• M47: 39,391,663 km (0.083 R)
• M48: 39,830,134 km (0.036 R)
• M49: 40,490,908 km (0.117 R)
• M50: 41,488,875 km (0.057 R)
• M51: 42,382,722 km (0.102 R)
• M52: 42,494,921 km (0.078 R)
• M53: 42,832,114 km (0.108 R)
• M54: 43,283,002 km (0.096 R)
• M55: 43,395,949 km (0.113 R)
• M56: 43,848,781 km (0.104 R)
• M57: 44,075,871 km (0.051 R)
• M58: 46,946,355 km (0.071 R)
• M59: 49,285,916 km (0.078 R)
• M60: 50,113,641 km (0.053 R)
• M61: 50,707,694 km (0.102 R)
• M62: 51,902,832 km (0.081 R)
• M63: 52,744,918 km (0.075 R)
• M64: 53,834,290 km (0.044 R)
• M65: 55,666,265 km (0.04 R)
• M66: 56,528,248 km (0.101 R)
• M67: 57,518,736 km (0.098 R)
• M68: 58,389,994 km (0.027 R)
• M69: 61,283,516 km (0.06 R)
• M70: 63,067,620 km (0.041 R)
• M71: 63,195,676 km (0.093 R)
• M72: 64,610,273 km (0.103 R)
• M73: 65,515,939 km (0.04 R)
• M74: 66,295,493 km (0.101 R)
• M75: 66,425,793 km (0.048 R)
• M76: 67,863,877 km (0.074 R)
• M77: 69,974,105 km (0.089 R)
• M78: 71,303,880 km (0.04 R)
• M79: 74,393,824 km (0.075 R)
• M80: 77,390,120 km (0.119 R)
• M81: 79,317,240 km (0.097 R)
• M82: 79,593,846 km (0.097 R)
• M83: 80,981,666 km (0.053 R)
• M84: 81,399,493 km (0.082 R)
• M85: 82,097,666 km (0.094 R)
• M86: 82,657,461 km (0.104 R)
• M87: 87,039,482 km (0.061 R)
• M88: 89,762,313 km (0.045 R)
• M89: 91,351,491 km (0.055 R)
• M90: 94,410,917 km (0.092 R)
• M91: 95,438,206 km (0.11 R)
• M92: 95,879,669 km (0.11 R)
• M93: 96,026,873 km (0.097 R)
• M94: 96,321,731 km (0.105 R)
• M95: 97,651,955 km (0.105 R)

Kuiper Belt

Range: 30.8 - 56.8 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 276 - 14,725 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit