🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.51

Radius: 1.18

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 0.61 AU - 0.63 AU

Year: 180 Days

Day: 17.6 Hours

Environment

Temp: 177 °C

Axial Tilt: 39.7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 101,717,670 km

• M1: 225,294 km (0.077 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.91 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.2

Radius: 1.37

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 0.74 AU - 1.08 AU

Year: 320 Days

Day: 21 Hours

Environment

Temp: 137 °C

Axial Tilt: 3 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 1.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.84

Radius: 1.88

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 1.34 AU - 1.78 AU

Year: 719 Days

Day: 42.6 Hours

Environment

Temp: -49 °C

Axial Tilt: 10.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 101,717,670 km

• M1: 1,583,344 km (0.096 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.69

Radius: 1.69

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 1.57 AU - 1.69 AU

Year: 768 Days

Day: 14.8 Hours

Environment

Temp: -55 °C

Axial Tilt: 34.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 101,717,670 km

• M1: 993,928 km (0.099 R)

Planet 5 - Ice Giant

Semi-Major Axis: 13.81 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 183.1

Radius: 6.5

Gravity: 4.33 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 10.66 AU - 16.96 AU

Year: 18935 Days

Day: 23.6 Hours

Environment

Temp: -186 °C

Axial Tilt: 2.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (90)

Outer Limit: 101,717,670 km

• M1: 82,279 km (0.047 R)
• M2: 128,056 km (0.082 R)
• M3: 278,551 km (0.045 R)
• M4: 403,017 km (0.114 R)
• M5: 501,452 km (0.073 R)
• M6: 592,557 km (0.072 R)
• M7: 1,709,006 km (0.054 R)
• M8: 1,968,858 km (0.072 R)
• M9: 2,066,545 km (0.101 R)
• M10: 2,499,332 km (0.07 R)
• M11: 3,271,556 km (0.036 R)
• M12: 3,387,644 km (0.092 R)
• M13: 3,653,629 km (0.048 R)
• M14: 4,268,925 km (0.07 R)
• M15: 4,395,784 km (0.099 R)
• M16: 4,491,826 km (0.112 R)
• M17: 4,620,929 km (0.084 R)
• M18: 4,849,813 km (0.118 R)
• M19: 5,048,928 km (0.102 R)
• M20: 5,149,608 km (0.057 R)
• M21: 5,352,761 km (0.094 R)
• M22: 5,732,142 km (0.068 R)
• M23: 5,872,165 km (0.032 R)
• M24: 6,013,386 km (0.089 R)
• M25: 6,736,392 km (0.111 R)
• M26: 7,910,586 km (0.066 R)
• M27: 8,821,786 km (0.078 R)
• M28: 8,983,651 km (0.092 R)
• M29: 9,516,519 km (0.052 R)
• M30: 9,724,161 km (0.074 R)
• M31: 10,741,726 km (0.05 R)
• M32: 11,350,888 km (0.09 R)
• M33: 11,881,811 km (0.049 R)
• M34: 11,971,121 km (0.118 R)
• M35: 12,466,290 km (0.085 R)
• M36: 12,511,618 km (0.059 R)
• M37: 12,602,424 km (0.103 R)
• M38: 12,693,529 km (0.038 R)
• M39: 13,709,598 km (0.067 R)
• M40: 13,803,246 km (0.045 R)
• M41: 13,991,290 km (0.057 R)
• M42: 14,038,414 km (0.11 R)
• M43: 14,085,537 km (0.053 R)
• M44: 14,322,201 km (0.092 R)
• M45: 14,560,211 km (0.11 R)
• M46: 15,525,417 km (0.073 R)
• M47: 16,114,383 km (0.05 R)
• M48: 16,361,818 km (0.109 R)
• M49: 16,411,485 km (0.112 R)
• M50: 16,660,565 km (0.097 R)
• M51: 17,263,445 km (0.105 R)
• M52: 17,822,342 km (0.113 R)
• M53: 18,749,700 km (0.051 R)
• M54: 19,219,287 km (0.104 R)
• M55: 19,324,155 km (0.095 R)
• M56: 20,919,766 km (0.068 R)
• M57: 21,135,786 km (0.059 R)
• M58: 23,168,073 km (0.104 R)
• M59: 23,223,873 km (0.107 R)
• M60: 23,615,669 km (0.062 R)
• M61: 24,975,365 km (0.089 R)
• M62: 25,376,736 km (0.051 R)
• M63: 25,549,372 km (0.03 R)
• M64: 27,238,631 km (0.107 R)
• M65: 28,364,654 km (0.094 R)
• M66: 29,385,211 km (0.102 R)
• M67: 30,234,478 km (0.057 R)
• M68: 31,091,973 km (0.092 R)
• M69: 31,153,457 km (0.116 R)
• M70: 31,833,230 km (0.111 R)
• M71: 32,580,322 km (0.082 R)
• M72: 32,705,386 km (0.064 R)
• M73: 33,207,287 km (0.113 R)
• M74: 33,270,267 km (0.051 R)
• M75: 33,522,340 km (0.073 R)
• M76: 33,901,570 km (0.105 R)
• M77: 36,271,799 km (0.09 R)
• M78: 37,313,299 km (0.058 R)
• M79: 37,640,769 km (0.081 R)
• M80: 38,562,741 km (0.062 R)
• M81: 38,893,801 km (0.071 R)
• M82: 39,758,925 km (0.094 R)
• M83: 42,119,729 km (0.116 R)
• M84: 43,902,637 km (0.063 R)
• M85: 44,109,830 km (0.077 R)
• M86: 44,803,216 km (0.054 R)
• M87: 45,151,330 km (0.109 R)
• M88: 45,570,055 km (0.083 R)
• M89: 45,640,066 km (0.063 R)
• M90: 46,482,003 km (0.119 R)

Planet 6 - Ice Giant

Semi-Major Axis: 14.11 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 857.4

Radius: 6

Gravity: 23.82 G

Time & Orbit

Eccentricity (e): 0.231

Orbit Range: 10.85 AU - 17.37 AU

Year: 19555 Days

Day: 23.3 Hours

Environment

Temp: -195 °C

Axial Tilt: 26.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (93)

Outer Limit: 101,717,670 km

• M1: 155,283 km (0.059 R)
• M2: 194,178 km (0.096 R)
• M3: 374,743 km (0.062 R)
• M4: 672,442 km (0.092 R)
• M5: 1,144,125 km (0.059 R)
• M6: 1,537,417 km (0.101 R)
• M7: 1,666,371 km (0.118 R)
• M8: 1,935,198 km (0.085 R)
• M9: 2,145,682 km (0.086 R)
• M10: 2,742,428 km (0.1 R)
• M11: 2,820,518 km (0.099 R)
• M12: 3,556,091 km (0.104 R)
• M13: 3,641,362 km (0.099 R)
• M14: 3,857,531 km (0.074 R)
• M15: 5,533,027 km (0.101 R)
• M16: 6,084,594 km (0.104 R)
• M17: 6,444,527 km (0.115 R)
• M18: 7,077,774 km (0.111 R)
• M19: 7,347,499 km (0.118 R)
• M20: 7,510,860 km (0.103 R)
• M21: 8,176,571 km (0.098 R)
• M22: 8,803,236 km (0.093 R)
• M23: 11,146,687 km (0.093 R)
• M24: 11,209,219 km (0.067 R)
• M25: 11,523,524 km (0.088 R)
• M26: 12,160,661 km (0.114 R)
• M27: 12,613,344 km (0.055 R)
• M28: 13,071,712 km (0.065 R)
• M29: 13,336,052 km (0.095 R)
• M30: 13,535,466 km (0.086 R)
• M31: 13,668,907 km (0.108 R)
• M32: 14,342,995 km (0.112 R)
• M33: 15,653,173 km (0.101 R)
• M34: 15,723,185 km (0.064 R)
• M35: 16,929,393 km (0.103 R)
• M36: 17,217,518 km (0.057 R)
• M37: 18,386,027 km (0.106 R)
• M38: 18,608,030 km (0.091 R)
• M39: 19,279,276 km (0.095 R)
• M40: 19,806,758 km (0.095 R)
• M41: 19,958,301 km (0.111 R)
• M42: 20,110,292 km (0.097 R)
• M43: 21,417,478 km (0.117 R)
• M44: 24,926,296 km (0.045 R)
• M45: 25,500,752 km (0.058 R)
• M46: 26,079,546 km (0.113 R)
• M47: 28,352,237 km (0.1 R)
• M48: 28,437,658 km (0.114 R)
• M49: 28,608,648 km (0.114 R)
• M50: 28,694,368 km (0.074 R)
• M51: 28,951,676 km (0.046 R)
• M52: 29,728,687 km (0.104 R)
• M53: 31,303,055 km (0.071 R)
• M54: 31,656,555 km (0.116 R)
• M55: 32,189,273 km (0.117 R)
• M56: 35,447,664 km (0.093 R)
• M57: 35,723,822 km (0.11 R)
• M58: 38,430,646 km (0.111 R)
• M59: 40,143,691 km (0.118 R)
• M60: 40,913,073 km (0.105 R)
• M61: 42,173,585 km (0.117 R)
• M62: 42,759,559 km (0.103 R)
• M63: 42,955,533 km (0.111 R)
• M64: 46,936,781 km (0.089 R)
• M65: 49,484,133 km (0.114 R)
• M66: 49,792,903 km (0.098 R)
• M67: 50,412,238 km (0.058 R)
• M68: 52,076,216 km (0.115 R)
• M69: 53,441,446 km (0.117 R)
• M70: 54,287,422 km (0.085 R)
• M71: 54,711,980 km (0.086 R)
• M72: 55,992,538 km (0.085 R)
• M73: 56,851,679 km (0.113 R)
• M74: 57,498,989 km (0.108 R)
• M75: 58,257,151 km (0.078 R)
• M76: 59,236,718 km (0.049 R)
• M77: 59,783,348 km (0.055 R)
• M78: 61,543,816 km (0.061 R)
• M79: 62,986,538 km (0.077 R)
• M80: 63,544,538 km (0.096 R)
• M81: 63,656,288 km (0.104 R)
• M82: 64,440,480 km (0.106 R)
• M83: 65,340,760 km (0.076 R)
• M84: 66,018,588 km (0.093 R)
• M85: 66,585,264 km (0.055 R)
• M86: 67,039,892 km (0.116 R)
• M87: 68,638,794 km (0.054 R)
• M88: 68,983,019 km (0.114 R)
• M89: 70,828,757 km (0.107 R)
• M90: 72,340,294 km (0.077 R)
• M91: 73,275,730 km (0.05 R)
• M92: 77,295,873 km (0.104 R)
• M93: 78,132,425 km (0.082 R)

Planet 7 - Ice Giant

Semi-Major Axis: 15.47 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 44.6

Radius: 5.8

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 11.8 AU - 19.14 AU

Year: 22450 Days

Day: 20 Hours

Environment

Temp: -189 °C

Axial Tilt: 9.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 101,717,670 km

• M1: 644,318 km (0.086 R)
• M2: 1,409,362 km (0.091 R)
• M3: 1,565,243 km (0.058 R)
• M4: 1,618,350 km (0.088 R)
• M5: 1,726,659 km (0.113 R)
• M6: 1,781,711 km (0.093 R)
• M7: 3,315,089 km (0.12 R)
• M8: 3,640,015 km (0.072 R)
• M9: 3,950,880 km (0.085 R)
• M10: 5,960,129 km (0.119 R)
• M11: 6,786,208 km (0.103 R)
• M12: 8,891,649 km (0.077 R)
• M13: 9,244,700 km (0.111 R)
• M14: 10,197,040 km (0.052 R)
• M15: 11,456,803 km (0.116 R)
• M16: 11,595,929 km (0.09 R)
• M17: 12,836,993 km (0.118 R)
• M18: 13,675,340 km (0.086 R)
• M19: 13,822,843 km (0.1 R)
• M20: 15,404,242 km (0.066 R)
• M21: 15,905,246 km (0.116 R)
• M22: 16,529,069 km (0.077 R)
• M23: 17,962,067 km (0.119 R)
• M24: 19,103,648 km (0.085 R)
• M25: 22,536,022 km (0.075 R)
• M26: 22,579,704 km (0.094 R)
• M27: 23,589,041 km (0.062 R)
• M28: 24,882,464 km (0.091 R)
• M29: 25,515,114 km (0.115 R)
• M30: 29,658,975 km (0.116 R)
• M31: 29,850,161 km (0.105 R)
• M32: 30,763,306 km (0.103 R)
• M33: 32,223,980 km (0.037 R)

Planet 8 - Ice Giant

Semi-Major Axis: 19.16 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 545.8

Radius: 5

Gravity: 21.83 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 17.8 AU - 20.52 AU

Year: 30944 Days

Day: 22.5 Hours

Environment

Temp: -210 °C

Axial Tilt: 37.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (95)

Outer Limit: 101,717,670 km

• M1: 86,019 km (0.089 R)
• M2: 289,921 km (0.108 R)
• M3: 434,881 km (0.074 R)
• M4: 653,443 km (0.065 R)
• M5: 706,252 km (0.077 R)
• M6: 1,697,637 km (0.091 R)
• M7: 1,846,187 km (0.102 R)
• M8: 2,565,903 km (0.058 R)
• M9: 2,867,043 km (0.109 R)
• M10: 2,911,025 km (0.07 R)
• M11: 3,316,585 km (0.1 R)
• M12: 3,409,036 km (0.117 R)
• M13: 3,549,509 km (0.059 R)
• M14: 3,933,227 km (0.073 R)
• M15: 4,431,239 km (0.093 R)
• M16: 5,761,014 km (0.106 R)
• M17: 6,097,310 km (0.079 R)
• M18: 6,671,915 km (0.088 R)
• M19: 7,749,020 km (0.079 R)
• M20: 8,307,469 km (0.104 R)
• M21: 8,370,300 km (0.103 R)
• M22: 8,814,755 km (0.075 R)
• M23: 10,059,410 km (0.082 R)
• M24: 11,358,069 km (0.109 R)
• M25: 14,033,776 km (0.104 R)
• M26: 14,258,921 km (0.052 R)
• M27: 15,171,318 km (0.093 R)
• M28: 15,248,212 km (0.049 R)
• M29: 17,052,212 km (0.082 R)
• M30: 17,695,334 km (0.099 R)
• M31: 18,101,342 km (0.055 R)
• M32: 19,923,744 km (0.112 R)
• M33: 22,501,315 km (0.06 R)
• M34: 23,029,246 km (0.101 R)
• M35: 23,472,355 km (0.114 R)
• M36: 24,097,375 km (0.083 R)
• M37: 25,546,529 km (0.088 R)
• M38: 25,637,933 km (0.115 R)
• M39: 25,913,194 km (0.071 R)
• M40: 26,651,758 km (0.083 R)
• M41: 26,744,509 km (0.071 R)
• M42: 27,023,659 km (0.073 R)
• M43: 28,623,159 km (0.11 R)
• M44: 29,482,300 km (0.111 R)
• M45: 29,770,575 km (0.084 R)
• M46: 29,963,406 km (0.07 R)
• M47: 32,505,972 km (0.109 R)
• M48: 33,202,200 km (0.038 R)
• M49: 34,508,190 km (0.082 R)
• M50: 35,422,233 km (0.095 R)
• M51: 36,447,128 km (0.074 R)
• M52: 37,066,762 km (0.105 R)
• M53: 38,735,975 km (0.111 R)
• M54: 39,473,941 km (0.109 R)
• M55: 40,216,545 km (0.102 R)
• M56: 40,749,862 km (0.113 R)
• M57: 41,500,245 km (0.092 R)
• M58: 41,823,376 km (0.115 R)
• M59: 43,341,794 km (0.118 R)
• M60: 46,097,985 km (0.03 R)
• M61: 46,767,885 km (0.063 R)
• M62: 48,796,731 km (0.041 R)
• M63: 49,821,925 km (0.074 R)
• M64: 50,279,844 km (0.068 R)
• M65: 50,394,586 km (0.076 R)
• M66: 52,706,621 km (0.108 R)
• M67: 52,939,844 km (0.064 R)
• M68: 53,290,053 km (0.094 R)
• M69: 56,239,225 km (0.104 R)
• M70: 56,358,155 km (0.117 R)
• M71: 57,793,547 km (0.074 R)
• M72: 63,777,611 km (0.027 R)
• M73: 66,150,383 km (0.12 R)
• M74: 68,043,993 km (0.119 R)
• M75: 69,699,443 km (0.029 R)
• M76: 77,642,192 km (0.073 R)
• M77: 78,571,943 km (0.108 R)
• M78: 79,104,811 km (0.062 R)
• M79: 80,442,216 km (0.037 R)
• M80: 80,576,405 km (0.118 R)
• M81: 81,652,313 km (0.107 R)
• M82: 84,499,011 km (0.047 R)
• M83: 85,044,894 km (0.107 R)
• M84: 85,866,036 km (0.112 R)
• M85: 87,378,172 km (0.03 R)
• M86: 87,930,188 km (0.039 R)
• M87: 88,068,416 km (0.095 R)
• M88: 88,621,928 km (0.11 R)
• M89: 88,760,456 km (0.109 R)
• M90: 88,899,133 km (0.115 R)
• M91: 89,037,810 km (0.091 R)
• M92: 92,809,771 km (0.104 R)
• M93: 93,091,314 km (0.119 R)
• M94: 93,232,086 km (0.08 R)
• M95: 93,796,219 km (0.025 R)

Planet 9 - Ice Giant

Semi-Major Axis: 19.58 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 640.6

Radius: 5

Gravity: 25.62 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 18.01 AU - 21.15 AU

Year: 31967 Days

Day: 16.4 Hours

Environment

Temp: -210 °C

Axial Tilt: 58.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (86)

Outer Limit: 101,717,670 km

• M1: 98,136 km (0.05 R)
• M2: 179,517 km (0.113 R)
• M3: 287,527 km (0.077 R)
• M4: 617,091 km (0.115 R)
• M5: 875,447 km (0.039 R)
• M6: 1,708,108 km (0.107 R)
• M7: 2,108,582 km (0.111 R)
• M8: 2,581,311 km (0.084 R)
• M9: 3,276,792 km (0.087 R)
• M10: 3,974,965 km (0.095 R)
• M11: 4,500,951 km (0.073 R)
• M12: 5,387,169 km (0.056 R)
• M13: 5,967,758 km (0.095 R)
• M14: 8,282,636 km (0.056 R)
• M15: 8,348,608 km (0.097 R)
• M16: 8,748,483 km (0.057 R)
• M17: 9,636,048 km (0.071 R)
• M18: 10,623,543 km (0.077 R)
• M19: 11,716,804 km (0.084 R)
• M20: 12,164,102 km (0.097 R)
• M21: 12,465,392 km (0.106 R)
• M22: 12,616,935 km (0.085 R)
• M23: 12,998,559 km (0.091 R)
• M24: 15,610,388 km (0.045 R)
• M25: 18,983,820 km (0.12 R)
• M26: 21,291,966 km (0.114 R)
• M27: 21,382,472 km (0.098 R)
• M28: 21,473,129 km (0.079 R)
• M29: 22,571,028 km (0.089 R)
• M30: 22,663,329 km (0.117 R)
• M31: 23,126,784 km (0.118 R)
• M32: 23,593,379 km (0.069 R)
• M33: 23,687,028 km (0.055 R)
• M34: 24,157,363 km (0.098 R)
• M35: 24,346,305 km (0.073 R)
• M36: 25,202,753 km (0.12 R)
• M37: 29,026,475 km (0.089 R)
• M38: 30,137,089 km (0.082 R)
• M39: 30,238,816 km (0.093 R)
• M40: 32,088,145 km (0.096 R)
• M41: 32,399,907 km (0.062 R)
• M42: 33,026,423 km (0.12 R)
• M43: 36,977,602 km (0.047 R)
• M44: 38,070,713 km (0.035 R)
• M45: 39,174,596 km (0.113 R)
• M46: 40,849,943 km (0.062 R)
• M47: 42,662,470 km (0.097 R)
• M48: 45,897,076 km (0.112 R)
• M49: 50,652,792 km (0.07 R)
• M50: 52,843,353 km (0.116 R)
• M51: 53,457,453 km (0.088 R)
• M52: 55,437,979 km (0.101 R)
• M53: 57,190,518 km (0.03 R)
• M54: 58,326,714 km (0.091 R)
• M55: 58,707,141 km (0.086 R)
• M56: 59,597,997 km (0.116 R)
• M57: 60,749,751 km (0.093 R)
• M58: 62,945,548 km (0.091 R)
• M59: 65,298,573 km (0.054 R)
• M60: 65,957,402 km (0.083 R)
• M61: 67,414,336 km (0.077 R)
• M62: 67,946,754 km (0.116 R)
• M63: 69,821,216 km (0.026 R)
• M64: 70,090,342 km (0.08 R)
• M65: 70,359,918 km (0.103 R)
• M66: 71,441,361 km (0.113 R)
• M67: 72,120,086 km (0.03 R)
• M68: 73,073,922 km (0.083 R)
• M69: 74,031,797 km (0.061 R)
• M70: 74,168,979 km (0.099 R)
• M71: 74,443,640 km (0.096 R)
• M72: 75,545,578 km (0.046 R)
• M73: 80,147,807 km (0.067 R)
• M74: 82,269,554 km (0.043 R)
• M75: 87,291,554 km (0.108 R)
• M76: 87,436,365 km (0.109 R)
• M77: 88,162,364 km (0.042 R)
• M78: 88,307,773 km (0.109 R)
• M79: 88,890,157 km (0.047 R)
• M80: 89,327,881 km (0.084 R)
• M81: 89,766,352 km (0.099 R)
• M82: 90,058,965 km (0.032 R)
• M83: 90,205,422 km (0.111 R)
• M84: 90,352,028 km (0.077 R)
• M85: 95,829,254 km (0.097 R)
• M86: 100,348,456 km (0.116 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 370 - 17,114 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit