🌌 Stone's Star System Generator

Asteroid Belt

Center: 3.68 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 7.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 780.1

Radius: 10.8

Gravity: 6.69 G

Time & Orbit

Eccentricity (e): 0.14

Orbit Range: 6.32 AU - 8.38 AU

Year: 8518 Days

Day: 6 Hours

Environment

Temp: -193 °C

Axial Tilt: 7.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (79)

Outer Limit: 98,763,212 km

• M1: 135,685 km (0.059 R)
• M2: 333,304 km (0.103 R)
• M3: 534,214 km (0.118 R)
• M4: 809,923 km (0.114 R)
• M5: 1,770,491 km (0.093 R)
• M6: 2,140,147 km (0.092 R)
• M7: 2,408,376 km (0.092 R)
• M8: 3,031,451 km (0.114 R)
• M9: 3,140,059 km (0.114 R)
• M10: 3,616,379 km (0.092 R)
• M11: 3,819,234 km (0.078 R)
• M12: 4,055,598 km (0.12 R)
• M13: 4,205,795 km (0.08 R)
• M14: 4,388,603 km (0.097 R)
• M15: 4,699,019 km (0.045 R)
• M16: 5,113,405 km (0.085 R)
• M17: 5,210,643 km (0.065 R)
• M18: 5,506,398 km (0.097 R)
• M19: 5,841,348 km (0.108 R)
• M20: 5,909,116 km (0.103 R)
• M21: 6,496,138 km (0.098 R)
• M22: 6,957,647 km (0.069 R)
• M23: 7,029,604 km (0.066 R)
• M24: 7,101,710 km (0.12 R)
• M25: 7,429,778 km (0.059 R)
• M26: 8,062,876 km (0.111 R)
• M27: 8,752,074 km (0.081 R)
• M28: 9,025,240 km (0.092 R)
• M29: 12,341,076 km (0.084 R)
• M30: 12,428,441 km (0.066 R)
• M31: 12,779,697 km (0.029 R)
• M32: 13,536,962 km (0.102 R)
• M33: 14,080,152 km (0.083 R)
• M34: 14,354,514 km (0.102 R)
• M35: 14,584,596 km (0.075 R)
• M36: 15,188,223 km (0.054 R)
• M37: 15,422,493 km (0.039 R)
• M38: 15,610,837 km (0.101 R)
• M39: 15,989,918 km (0.09 R)
• M40: 17,047,874 km (0.104 R)
• M41: 18,277,269 km (0.099 R)
• M42: 19,484,375 km (0.025 R)
• M43: 19,687,977 km (0.097 R)
• M44: 20,046,264 km (0.068 R)
• M45: 20,200,350 km (0.087 R)
• M46: 20,665,151 km (0.105 R)
• M47: 20,925,002 km (0.049 R)
• M48: 21,710,840 km (0.113 R)
• M49: 22,080,795 km (0.068 R)
• M50: 22,399,588 km (0.117 R)
• M51: 22,666,471 km (0.044 R)
• M52: 24,180,401 km (0.104 R)
• M53: 24,949,484 km (0.115 R)
• M54: 25,950,144 km (0.098 R)
• M55: 26,963,969 km (0.038 R)
• M56: 27,818,622 km (0.059 R)
• M57: 28,163,146 km (0.065 R)
• M58: 28,740,145 km (0.12 R)
• M59: 28,972,171 km (0.082 R)
• M60: 29,437,869 km (0.095 R)
• M61: 30,023,545 km (0.052 R)
• M62: 30,849,923 km (0.086 R)
• M63: 31,325,495 km (0.114 R)
• M64: 31,803,610 km (0.11 R)
• M65: 32,766,870 km (0.117 R)
• M66: 33,495,562 km (0.085 R)
• M67: 34,045,633 km (0.08 R)
• M68: 34,660,331 km (0.09 R)
• M69: 35,278,768 km (0.051 R)
• M70: 36,400,902 km (0.076 R)
• M71: 36,777,589 km (0.07 R)
• M72: 37,408,294 km (0.051 R)
• M73: 38,361,083 km (0.086 R)
• M74: 39,000,614 km (0.071 R)
• M75: 39,966,717 km (0.027 R)
• M76: 41,397,620 km (0.114 R)
• M77: 42,580,940 km (0.055 R)
• M78: 43,044,095 km (0.025 R)
• M79: 44,376,712 km (0.08 R)

Planet 2 - Gas Giant

Semi-Major Axis: 7.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 855.9

Radius: 9.3

Gravity: 9.9 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 6.2 AU - 8.76 AU

Year: 8745 Days

Day: 14.7 Hours

Environment

Temp: -192 °C

Axial Tilt: 22.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (84)

Outer Limit: 98,763,212 km

• M1: 258,954 km (0.027 R)
• M2: 506,688 km (0.042 R)
• M3: 932,444 km (0.112 R)
• M4: 1,102,387 km (0.118 R)
• M5: 1,241,812 km (0.027 R)
• M6: 1,366,128 km (0.055 R)
• M7: 1,649,915 km (0.072 R)
• M8: 1,718,132 km (0.052 R)
• M9: 1,857,407 km (0.115 R)
• M10: 2,024,658 km (0.118 R)
• M11: 2,323,255 km (0.102 R)
• M12: 2,961,888 km (0.119 R)
• M13: 3,243,581 km (0.063 R)
• M14: 3,445,987 km (0.028 R)
• M15: 3,652,582 km (0.077 R)
• M16: 3,712,421 km (0.092 R)
• M17: 3,802,628 km (0.118 R)
• M18: 4,171,237 km (0.045 R)
• M19: 4,265,185 km (0.106 R)
• M20: 4,359,880 km (0.102 R)
• M21: 4,487,188 km (0.118 R)
• M22: 5,108,767 km (0.082 R)
• M23: 5,243,106 km (0.115 R)
• M24: 6,180,337 km (0.057 R)
• M25: 6,540,569 km (0.106 R)
• M26: 6,613,423 km (0.088 R)
• M27: 7,281,527 km (0.095 R)
• M28: 7,661,954 km (0.11 R)
• M29: 7,738,847 km (0.118 R)
• M30: 9,125,321 km (0.049 R)
• M31: 9,535,368 km (0.066 R)
• M32: 10,204,071 km (0.076 R)
• M33: 10,672,611 km (0.109 R)
• M34: 11,454,410 km (0.051 R)
• M35: 11,941,351 km (0.088 R)
• M36: 12,209,729 km (0.12 R)
• M37: 12,661,515 km (0.116 R)
• M38: 13,628,067 km (0.115 R)
• M39: 14,522,961 km (0.077 R)
• M40: 15,098,016 km (0.099 R)
• M41: 15,582,862 km (0.072 R)
• M42: 16,122,013 km (0.084 R)
• M43: 16,917,275 km (0.115 R)
• M44: 17,370,258 km (0.083 R)
• M45: 17,623,676 km (0.112 R)
• M46: 17,878,292 km (0.113 R)
• M47: 18,185,416 km (0.103 R)
• M48: 18,391,113 km (0.098 R)
• M49: 18,908,722 km (0.09 R)
• M50: 19,378,759 km (0.082 R)
• M51: 19,536,285 km (0.074 R)
• M52: 20,011,558 km (0.108 R)
• M53: 20,223,987 km (0.051 R)
• M54: 20,383,757 km (0.051 R)
• M55: 20,650,939 km (0.1 R)
• M56: 20,973,173 km (0.106 R)
• M57: 22,059,403 km (0.062 R)
• M58: 22,443,869 km (0.063 R)
• M59: 22,886,081 km (0.109 R)
• M60: 23,554,634 km (0.118 R)
• M61: 23,722,782 km (0.11 R)
• M62: 23,835,130 km (0.11 R)
• M63: 24,740,197 km (0.07 R)
• M64: 24,911,037 km (0.108 R)
• M65: 25,196,769 km (0.062 R)
• M66: 26,467,154 km (0.102 R)
• M67: 28,173,169 km (0.066 R)
• M68: 31,876,314 km (0.076 R)
• M69: 32,935,318 km (0.045 R)
• M70: 33,437,667 km (0.066 R)
• M71: 34,895,947 km (0.076 R)
• M72: 34,959,826 km (0.057 R)
• M73: 35,472,198 km (0.116 R)
• M74: 35,793,684 km (0.113 R)
• M75: 37,415,774 km (0.082 R)
• M76: 37,808,618 km (0.11 R)
• M77: 39,793,482 km (0.113 R)
• M78: 40,462,484 km (0.114 R)
• M79: 40,731,162 km (0.105 R)
• M80: 42,423,862 km (0.073 R)
• M81: 42,901,827 km (0.114 R)
• M82: 44,346,793 km (0.095 R)
• M83: 45,318,880 km (0.079 R)
• M84: 46,157,675 km (0.053 R)

Planet 3 - Ice Giant

Semi-Major Axis: 11.23 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 427.2

Radius: 4.1

Gravity: 25.41 G

Time & Orbit

Eccentricity (e): 0.169

Orbit Range: 9.33 AU - 13.13 AU

Year: 16088 Days

Day: 18.5 Hours

Environment

Temp: -205 °C

Axial Tilt: 33.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (96)

Outer Limit: 98,763,212 km

• M1: 186,698 km (0.069 R)
• M2: 222,003 km (0.056 R)
• M3: 342,878 km (0.074 R)
• M4: 717,172 km (0.107 R)
• M5: 876,644 km (0.054 R)
• M6: 981,960 km (0.088 R)
• M7: 1,047,185 km (0.099 R)
• M8: 1,091,316 km (0.097 R)
• M9: 1,251,237 km (0.108 R)
• M10: 2,415,407 km (0.094 R)
• M11: 2,623,498 km (0.067 R)
• M12: 3,152,775 km (0.111 R)
• M13: 3,545,619 km (0.109 R)
• M14: 3,679,958 km (0.116 R)
• M15: 3,747,875 km (0.093 R)
• M16: 3,781,984 km (0.094 R)
• M17: 3,816,092 km (0.071 R)
• M18: 3,988,578 km (0.085 R)
• M19: 4,630,204 km (0.069 R)
• M20: 4,666,706 km (0.1 R)
• M21: 4,814,059 km (0.101 R)
• M22: 4,962,909 km (0.064 R)
• M23: 5,188,952 km (0.036 R)
• M24: 5,651,209 km (0.088 R)
• M25: 5,768,943 km (0.063 R)
• M26: 6,573,480 km (0.103 R)
• M27: 6,863,401 km (0.078 R)
• M28: 7,157,510 km (0.12 R)
• M29: 7,714,313 km (0.118 R)
• M30: 8,152,186 km (0.076 R)
• M31: 8,240,748 km (0.062 R)
• M32: 8,778,702 km (0.106 R)
• M33: 10,077,361 km (0.052 R)
• M34: 10,219,928 km (0.104 R)
• M35: 10,797,226 km (0.087 R)
• M36: 11,040,921 km (0.094 R)
• M37: 11,237,194 km (0.106 R)
• M38: 11,335,779 km (0.075 R)
• M39: 12,084,067 km (0.062 R)
• M40: 13,418,480 km (0.076 R)
• M41: 13,627,917 km (0.091 R)
• M42: 13,944,018 km (0.072 R)
• M43: 14,156,147 km (0.095 R)
• M44: 14,369,324 km (0.071 R)
• M45: 15,341,710 km (0.114 R)
• M46: 16,839,484 km (0.09 R)
• M47: 17,065,377 km (0.098 R)
• M48: 17,978,822 km (0.039 R)
• M49: 18,615,959 km (0.086 R)
• M50: 19,674,364 km (0.094 R)
• M51: 20,450,927 km (0.108 R)
• M52: 21,115,739 km (0.106 R)
• M53: 21,481,357 km (0.081 R)
• M54: 21,726,248 km (0.073 R)
• M55: 22,218,874 km (0.065 R)
• M56: 22,777,473 km (0.108 R)
• M57: 23,466,520 km (0.032 R)
• M58: 24,035,291 km (0.078 R)
• M59: 24,416,916 km (0.068 R)
• M60: 24,928,989 km (0.073 R)
• M61: 25,057,643 km (0.08 R)
• M62: 25,380,027 km (0.112 R)
• M63: 25,833,607 km (0.115 R)
• M64: 26,028,833 km (0.045 R)
• M65: 26,224,656 km (0.072 R)
• M66: 27,674,858 km (0.092 R)
• M67: 31,135,356 km (0.054 R)
• M68: 32,458,998 km (0.1 R)
• M69: 32,599,321 km (0.098 R)
• M70: 32,880,714 km (0.114 R)
• M71: 33,092,395 km (0.037 R)
• M72: 33,163,006 km (0.076 R)
• M73: 34,156,934 km (0.09 R)
• M74: 34,228,292 km (0.102 R)
• M75: 34,729,445 km (0.098 R)
• M76: 36,028,852 km (0.068 R)
• M77: 36,392,674 km (0.038 R)
• M78: 36,611,536 km (0.088 R)
• M79: 37,564,923 km (0.095 R)
• M80: 38,675,089 km (0.085 R)
• M81: 40,473,704 km (0.075 R)
• M82: 42,146,208 km (0.095 R)
• M83: 44,463,030 km (0.119 R)
• M84: 44,697,001 km (0.083 R)
• M85: 48,736,294 km (0.109 R)
• M86: 49,461,095 km (0.033 R)
• M87: 49,541,878 km (0.095 R)
• M88: 50,758,558 km (0.101 R)
• M89: 51,411,403 km (0.036 R)
• M90: 52,395,906 km (0.076 R)
• M91: 52,478,185 km (0.062 R)
• M92: 52,560,613 km (0.113 R)
• M93: 52,643,042 km (0.049 R)
• M94: 53,221,088 km (0.075 R)
• M95: 54,800,692 km (0.094 R)
• M96: 55,470,442 km (0.048 R)

Planet 4 - Ice Giant

Semi-Major Axis: 11.72 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 300.1

Radius: 5.4

Gravity: 10.29 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 8.83 AU - 14.61 AU

Year: 17152 Days

Day: 18.9 Hours

Environment

Temp: -204 °C

Axial Tilt: 11.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (90)

Outer Limit: 98,763,212 km

• M1: 91,404 km (0.026 R)
• M2: 192,981 km (0.051 R)
• M3: 379,530 km (0.058 R)
• M4: 564,433 km (0.097 R)
• M5: 632,201 km (0.059 R)
• M6: 684,859 km (0.112 R)
• M7: 794,813 km (0.113 R)
• M8: 1,011,431 km (0.057 R)
• M9: 1,268,141 km (0.097 R)
• M10: 1,312,871 km (0.118 R)
• M11: 1,497,325 km (0.112 R)
• M12: 1,789,340 km (0.06 R)
• M13: 2,046,050 km (0.119 R)
• M14: 2,098,858 km (0.04 R)
• M15: 2,565,603 km (0.118 R)
• M16: 2,766,962 km (0.111 R)
• M17: 2,884,397 km (0.11 R)
• M18: 3,339,024 km (0.066 R)
• M19: 3,527,219 km (0.116 R)
• M20: 3,654,526 km (0.073 R)
• M21: 4,313,804 km (0.112 R)
• M22: 4,553,161 km (0.063 R)
• M23: 4,622,425 km (0.07 R)
• M24: 4,691,988 km (0.064 R)
• M25: 5,260,759 km (0.074 R)
• M26: 6,269,198 km (0.105 R)
• M27: 6,501,224 km (0.03 R)
• M28: 6,657,554 km (0.074 R)
• M29: 7,827,409 km (0.105 R)
• M30: 9,102,731 km (0.069 R)
• M31: 9,541,951 km (0.052 R)
• M32: 9,943,172 km (0.082 R)
• M33: 10,033,080 km (0.114 R)
• M34: 10,213,795 km (0.071 R)
• M35: 10,854,522 km (0.108 R)
• M36: 10,900,748 km (0.083 R)
• M37: 11,179,748 km (0.109 R)
• M38: 11,555,388 km (0.063 R)
• M39: 12,658,224 km (0.082 R)
• M40: 12,951,286 km (0.06 R)
• M41: 13,444,959 km (0.083 R)
• M42: 13,744,005 km (0.117 R)
• M43: 15,220,536 km (0.111 R)
• M44: 15,480,088 km (0.104 R)
• M45: 16,214,913 km (0.093 R)
• M46: 16,800,140 km (0.097 R)
• M47: 17,772,526 km (0.054 R)
• M48: 18,375,854 km (0.082 R)
• M49: 18,596,811 km (0.102 R)
• M50: 18,707,663 km (0.117 R)
• M51: 19,041,565 km (0.1 R)
• M52: 19,377,412 km (0.067 R)
• M53: 19,715,204 km (0.111 R)
• M54: 19,884,848 km (0.075 R)
• M55: 19,941,396 km (0.088 R)
• M56: 20,453,619 km (0.033 R)
• M57: 20,970,330 km (0.074 R)
• M58: 21,143,415 km (0.081 R)
• M59: 25,193,329 km (0.12 R)
• M60: 25,500,303 km (0.1 R)
• M61: 26,740,769 km (0.088 R)
• M62: 28,638,119 km (0.109 R)
• M63: 28,702,147 km (0.055 R)
• M64: 29,667,651 km (0.058 R)
• M65: 31,037,220 km (0.113 R)
• M66: 31,564,403 km (0.089 R)
• M67: 32,494,004 km (0.114 R)
• M68: 33,702,306 km (0.116 R)
• M69: 35,679,840 km (0.115 R)
• M70: 36,093,777 km (0.105 R)
• M71: 37,905,258 km (0.08 R)
• M72: 38,116,191 km (0.068 R)
• M73: 39,247,749 km (0.076 R)
• M74: 41,398,967 km (0.106 R)
• M75: 41,616,183 km (0.05 R)
• M76: 41,978,958 km (0.039 R)
• M77: 42,634,795 km (0.065 R)
• M78: 43,147,167 km (0.115 R)
• M79: 44,993,953 km (0.056 R)
• M80: 45,068,303 km (0.089 R)
• M81: 45,590,250 km (0.091 R)
• M82: 45,889,446 km (0.118 R)
• M83: 46,414,535 km (0.046 R)
• M84: 46,866,171 km (0.108 R)
• M85: 49,299,679 km (0.045 R)
• M86: 50,377,233 km (0.114 R)
• M87: 51,306,983 km (0.078 R)
• M88: 51,695,938 km (0.062 R)
• M89: 51,851,819 km (0.089 R)
• M90: 52,007,999 km (0.118 R)

Planet 5 - Ice Giant

Semi-Major Axis: 16.56 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 722

Radius: 4

Gravity: 45.13 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 15.88 AU - 17.24 AU

Year: 28808 Days

Day: 16.8 Hours

Environment

Temp: -204 °C

Axial Tilt: 34.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (96)

Outer Limit: 98,763,212 km

• M1: 148,401 km (0.081 R)
• M2: 231,129 km (0.039 R)
• M3: 394,041 km (0.062 R)
• M4: 668,553 km (0.045 R)
• M5: 899,382 km (0.075 R)
• M6: 1,087,876 km (0.081 R)
• M7: 1,838,857 km (0.082 R)
• M8: 2,325,349 km (0.107 R)
• M9: 2,452,956 km (0.093 R)
• M10: 4,000,247 km (0.109 R)
• M11: 4,412,240 km (0.118 R)
• M12: 4,570,365 km (0.103 R)
• M13: 4,946,154 km (0.061 R)
• M14: 5,387,767 km (0.07 R)
• M15: 6,132,017 km (0.111 R)
• M16: 6,665,782 km (0.034 R)
• M17: 7,091,238 km (0.075 R)
• M18: 7,214,507 km (0.111 R)
• M19: 7,400,607 km (0.106 R)
• M20: 8,096,386 km (0.109 R)
• M21: 8,549,967 km (0.075 R)
• M22: 9,959,329 km (0.049 R)
• M23: 11,439,151 km (0.097 R)
• M24: 11,656,068 km (0.112 R)
• M25: 12,686,199 km (0.114 R)
• M26: 12,835,797 km (0.114 R)
• M27: 13,287,881 km (0.102 R)
• M28: 13,363,727 km (0.039 R)
• M29: 13,898,839 km (0.058 R)
• M30: 15,306,555 km (0.118 R)
• M31: 16,269,965 km (0.068 R)
• M32: 16,923,110 km (0.076 R)
• M33: 17,835,058 km (0.057 R)
• M34: 17,918,833 km (0.041 R)
• M35: 18,002,608 km (0.083 R)
• M36: 19,792,845 km (0.099 R)
• M37: 21,371,851 km (0.118 R)
• M38: 21,728,193 km (0.102 R)
• M39: 21,907,112 km (0.103 R)
• M40: 22,356,504 km (0.105 R)
• M41: 23,631,078 km (0.092 R)
• M42: 23,999,538 km (0.086 R)
• M43: 25,304,031 km (0.063 R)
• M44: 26,344,933 km (0.089 R)
• M45: 26,918,641 km (0.092 R)
• M46: 27,207,066 km (0.086 R)
• M47: 29,057,142 km (0.093 R)
• M48: 30,646,470 km (0.05 R)
• M49: 32,365,649 km (0.032 R)
• M50: 32,467,824 km (0.115 R)
• M51: 32,774,799 km (0.117 R)
• M52: 37,278,742 km (0.107 R)
• M53: 39,547,843 km (0.107 R)
• M54: 40,094,623 km (0.115 R)
• M55: 40,204,278 km (0.101 R)
• M56: 40,314,083 km (0.074 R)
• M57: 43,878,701 km (0.056 R)
• M58: 45,013,102 km (0.091 R)
• M59: 45,583,967 km (0.059 R)
• M60: 45,698,410 km (0.105 R)
• M61: 46,732,879 km (0.048 R)
• M62: 49,999,947 km (0.12 R)
• M63: 50,354,344 km (0.056 R)
• M64: 52,019,219 km (0.11 R)
• M65: 55,036,608 km (0.102 R)
• M66: 55,280,452 km (0.087 R)
• M67: 56,136,751 km (0.082 R)
• M68: 56,751,149 km (0.077 R)
• M69: 58,358,728 km (0.049 R)
• M70: 58,607,359 km (0.09 R)
• M71: 59,605,476 km (0.114 R)
• M72: 59,855,903 km (0.062 R)
• M73: 60,483,466 km (0.053 R)
• M74: 60,609,278 km (0.113 R)
• M75: 61,113,124 km (0.119 R)
• M76: 62,252,162 km (0.076 R)
• M77: 65,323,556 km (0.096 R)
• M78: 65,581,762 km (0.037 R)
• M79: 66,488,026 km (0.045 R)
• M80: 71,878,635 km (0.103 R)
• M81: 72,411,952 km (0.081 R)
• M82: 77,407,623 km (0.101 R)
• M83: 77,544,206 km (0.102 R)
• M84: 79,189,184 km (0.025 R)
• M85: 79,877,933 km (0.116 R)
• M86: 80,015,862 km (0.072 R)
• M87: 80,292,169 km (0.1 R)
• M88: 81,122,587 km (0.06 R)
• M89: 84,754,524 km (0.044 R)
• M90: 86,165,531 km (0.106 R)
• M91: 87,299,782 km (0.096 R)
• M92: 89,010,583 km (0.03 R)
• M93: 89,583,244 km (0.08 R)
• M94: 92,465,097 km (0.082 R)
• M95: 96,697,520 km (0.106 R)
• M96: 98,467,263 km (0.092 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 164 - 19,344 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit