🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.68 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.21

Radius: 1.59

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.145

Orbit Range: 0.58 AU - 0.78 AU

Year: 211 Days

Day: 43.7 Hours

Environment

Temp: 144 °C

Axial Tilt: 39.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 2.23 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.71

Radius: 1.86

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.248

Orbit Range: 1.68 AU - 2.78 AU

Year: 1255 Days

Day: 22 Hours

Environment

Temp: -81 °C

Axial Tilt: 31.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 2.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2

Radius: 1.32

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.092

Orbit Range: 2.42 AU - 2.9 AU

Year: 1634 Days

Day: 29.6 Hours

Environment

Temp: -98 °C

Axial Tilt: 22.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 56,662,125 km

• M1: 395,986 km (0.075 R)

Planet 4 - Gas Giant

Semi-Major Axis: 6.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 574

Radius: 12.2

Gravity: 3.86 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 5.3 AU - 7.46 AU

Year: 6071 Days

Day: 8.7 Hours

Environment

Temp: -154 °C

Axial Tilt: 16.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (80)

Outer Limit: 56,662,125 km

• M1: 170,542 km (0.096 R)
• M2: 409,749 km (0.11 R)
• M3: 534,064 km (0.071 R)
• M4: 814,112 km (0.12 R)
• M5: 1,066,334 km (0.077 R)
• M6: 1,280,408 km (0.074 R)
• M7: 1,508,994 km (0.113 R)
• M8: 1,913,955 km (0.065 R)
• M9: 2,332,829 km (0.096 R)
• M10: 2,676,306 km (0.081 R)
• M11: 3,079,472 km (0.101 R)
• M12: 3,411,579 km (0.111 R)
• M13: 3,895,977 km (0.109 R)
• M14: 4,402,366 km (0.106 R)
• M15: 4,550,917 km (0.105 R)
• M16: 4,650,848 km (0.078 R)
• M17: 4,776,959 km (0.059 R)
• M18: 4,929,699 km (0.058 R)
• M19: 5,109,964 km (0.115 R)
• M20: 5,744,708 km (0.068 R)
• M21: 5,825,939 km (0.099 R)
• M22: 6,237,334 km (0.072 R)
• M23: 6,460,534 km (0.099 R)
• M24: 7,616,476 km (0.099 R)
• M25: 7,765,476 km (0.102 R)
• M26: 8,929,497 km (0.096 R)
• M27: 9,086,575 km (0.111 R)
• M28: 9,213,134 km (0.031 R)
• M29: 9,403,872 km (0.109 R)
• M30: 10,179,986 km (0.107 R)
• M31: 10,278,421 km (0.112 R)
• M32: 10,542,611 km (0.066 R)
• M33: 11,621,660 km (0.084 R)
• M34: 11,931,477 km (0.074 R)
• M35: 12,070,155 km (0.107 R)
• M36: 12,174,424 km (0.117 R)
• M37: 12,348,855 km (0.088 R)
• M38: 13,055,257 km (0.089 R)
• M39: 13,920,082 km (0.091 R)
• M40: 15,364,749 km (0.053 R)
• M41: 15,629,088 km (0.057 R)
• M42: 16,238,998 km (0.083 R)
• M43: 16,315,742 km (0.07 R)
• M44: 16,624,213 km (0.11 R)
• M45: 17,797,659 km (0.096 R)
• M46: 18,394,554 km (0.107 R)
• M47: 18,474,589 km (0.109 R)
• M48: 19,485,272 km (0.11 R)
• M49: 19,607,793 km (0.091 R)
• M50: 19,771,453 km (0.094 R)
• M51: 19,935,711 km (0.032 R)
• M52: 20,100,269 km (0.09 R)
• M53: 20,555,346 km (0.057 R)
• M54: 21,139,526 km (0.086 R)
• M55: 21,307,374 km (0.047 R)
• M56: 21,602,381 km (0.064 R)
• M57: 22,366,826 km (0.077 R)
• M58: 22,537,966 km (0.038 R)
• M59: 22,709,555 km (0.068 R)
• M60: 23,791,447 km (0.08 R)
• M61: 24,316,835 km (0.055 R)
• M62: 24,580,875 km (0.099 R)
• M63: 25,289,819 km (0.085 R)
• M64: 26,320,698 km (0.102 R)
• M65: 28,099,866 km (0.112 R)
• M66: 28,794,449 km (0.114 R)
• M67: 28,887,498 km (0.034 R)
• M68: 28,980,698 km (0.091 R)
• M69: 29,120,572 km (0.045 R)
• M70: 29,260,745 km (0.118 R)
• M71: 29,354,244 km (0.119 R)
• M72: 29,494,716 km (0.118 R)
• M73: 29,588,514 km (0.114 R)
• M74: 30,437,183 km (0.11 R)
• M75: 30,674,445 km (0.064 R)
• M76: 30,769,440 km (0.037 R)
• M77: 31,150,615 km (0.062 R)
• M78: 31,246,058 km (0.114 R)
• M79: 31,341,651 km (0.045 R)
• M80: 31,533,286 km (0.088 R)

Planet 5 - Gas Giant

Semi-Major Axis: 6.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 252.1

Radius: 12.1

Gravity: 1.72 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 6.86 AU - 6.86 AU

Year: 6769 Days

Day: 13.2 Hours

Environment

Temp: -170 °C

Axial Tilt: 24 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (64)

Outer Limit: 56,662,125 km

• M1: 230,680 km (0.092 R)
• M2: 401,820 km (0.115 R)
• M3: 885,171 km (0.11 R)
• M4: 1,500,317 km (0.108 R)
• M5: 1,619,397 km (0.109 R)
• M6: 2,111,275 km (0.062 R)
• M7: 2,684,384 km (0.116 R)
• M8: 2,848,942 km (0.109 R)
• M9: 2,979,391 km (0.108 R)
• M10: 3,130,934 km (0.037 R)
• M11: 3,742,490 km (0.113 R)
• M12: 3,824,021 km (0.104 R)
• M13: 4,673,138 km (0.093 R)
• M14: 5,051,471 km (0.111 R)
• M15: 5,814,271 km (0.104 R)
• M16: 5,932,902 km (0.094 R)
• M17: 6,588,141 km (0.117 R)
• M18: 7,497,396 km (0.114 R)
• M19: 7,626,799 km (0.111 R)
• M20: 7,730,919 km (0.116 R)
• M21: 7,966,835 km (0.118 R)
• M22: 8,098,930 km (0.095 R)
• M23: 8,472,625 km (0.068 R)
• M24: 8,661,717 km (0.077 R)
• M25: 8,770,325 km (0.071 R)
• M26: 8,852,155 km (0.108 R)
• M27: 9,459,821 km (0.119 R)
• M28: 9,796,865 km (0.044 R)
• M29: 9,938,535 km (0.072 R)
• M30: 10,023,805 km (0.073 R)
• M31: 10,425,326 km (0.081 R)
• M32: 11,037,331 km (0.085 R)
• M33: 11,511,407 km (0.11 R)
• M34: 11,720,993 km (0.099 R)
• M35: 12,113,538 km (0.067 R)
• M36: 12,235,161 km (0.073 R)
• M37: 12,725,842 km (0.118 R)
• M38: 13,758,367 km (0.093 R)
• M39: 15,274,840 km (0.112 R)
• M40: 15,373,425 km (0.118 R)
• M41: 15,637,465 km (0.111 R)
• M42: 15,803,220 km (0.087 R)
• M43: 16,674,478 km (0.112 R)
• M44: 17,527,036 km (0.096 R)
• M45: 18,779,619 km (0.103 R)
• M46: 18,920,540 km (0.099 R)
• M47: 19,026,456 km (0.107 R)
• M48: 19,238,885 km (0.102 R)
• M49: 19,487,815 km (0.111 R)
• M50: 19,630,532 km (0.062 R)
• M51: 20,530,363 km (0.031 R)
• M52: 20,821,181 km (0.1 R)
• M53: 21,003,691 km (0.103 R)
• M54: 21,296,603 km (0.119 R)
• M55: 21,591,012 km (0.071 R)
• M56: 21,701,714 km (0.081 R)
• M57: 21,849,667 km (0.111 R)
• M58: 22,519,566 km (0.09 R)
• M59: 22,970,005 km (0.087 R)
• M60: 23,271,894 km (0.088 R)
• M61: 24,223,934 km (0.086 R)
• M62: 24,878,425 km (0.073 R)
• M63: 26,008,637 km (0.112 R)
• M64: 26,165,715 km (0.094 R)

Planet 6 - Gas Giant

Semi-Major Axis: 8.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 968.6

Radius: 11

Gravity: 8 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 8.08 AU - 8.34 AU

Year: 8862 Days

Day: 7.5 Hours

Environment

Temp: -173 °C

Axial Tilt: 34.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (81)

Outer Limit: 56,662,125 km

• M1: 201,808 km (0.096 R)
• M2: 309,518 km (0.07 R)
• M3: 381,325 km (0.081 R)
• M4: 503,546 km (0.113 R)
• M5: 641,176 km (0.1 R)
• M6: 1,073,215 km (0.026 R)
• M7: 1,320,500 km (0.093 R)
• M8: 1,967,362 km (0.064 R)
• M9: 2,042,161 km (0.039 R)
• M10: 3,128,391 km (0.079 R)
• M11: 3,245,675 km (0.11 R)
• M12: 3,484,733 km (0.071 R)
• M13: 3,606,505 km (0.108 R)
• M14: 3,698,658 km (0.119 R)
• M15: 3,885,655 km (0.104 R)
• M16: 4,204,149 km (0.096 R)
• M17: 4,366,612 km (0.067 R)
• M18: 4,664,312 km (0.101 R)
• M19: 4,764,991 km (0.12 R)
• M20: 6,029,841 km (0.03 R)
• M21: 6,361,649 km (0.114 R)
• M22: 6,436,149 km (0.108 R)
• M23: 6,699,292 km (0.115 R)
• M24: 6,851,433 km (0.078 R)
• M25: 7,589,100 km (0.085 R)
• M26: 7,747,674 km (0.099 R)
• M27: 9,097,495 km (0.071 R)
• M28: 9,907,269 km (0.117 R)
• M29: 11,007,711 km (0.074 R)
• M30: 11,368,092 km (0.108 R)
• M31: 12,706,694 km (0.068 R)
• M32: 13,084,727 km (0.089 R)
• M33: 13,514,372 km (0.086 R)
• M34: 15,179,397 km (0.091 R)
• M35: 16,188,734 km (0.115 R)
• M36: 16,547,170 km (0.097 R)
• M37: 17,323,882 km (0.096 R)
• M38: 18,752,093 km (0.108 R)
• M39: 18,859,355 km (0.1 R)
• M40: 18,966,916 km (0.045 R)
• M41: 19,616,170 km (0.091 R)
• M42: 19,834,284 km (0.077 R)
• M43: 20,272,755 km (0.104 R)
• M44: 20,382,859 km (0.047 R)
• M45: 20,825,370 km (0.039 R)
• M46: 21,047,822 km (0.092 R)
• M47: 22,342,292 km (0.093 R)
• M48: 22,627,127 km (0.05 R)
• M49: 22,855,862 km (0.112 R)
• M50: 22,970,454 km (0.097 R)
• M51: 23,085,345 km (0.118 R)
• M52: 23,488,661 km (0.117 R)
• M53: 25,007,528 km (0.116 R)
• M54: 25,421,914 km (0.085 R)
• M55: 25,540,695 km (0.062 R)
• M56: 25,957,923 km (0.113 R)
• M57: 26,678,536 km (0.119 R)
• M58: 27,041,311 km (0.11 R)
• M59: 28,139,359 km (0.088 R)
• M60: 28,570,351 km (0.064 R)
• M61: 30,441,970 km (0.069 R)
• M62: 32,352,933 km (0.114 R)
• M63: 32,869,046 km (0.047 R)
• M64: 35,026,845 km (0.106 R)
• M65: 35,225,212 km (0.11 R)
• M66: 35,490,449 km (0.102 R)
• M67: 36,356,771 km (0.117 R)
• M68: 36,624,700 km (0.062 R)
• M69: 37,027,867 km (0.119 R)
• M70: 37,297,442 km (0.097 R)
• M71: 38,314,259 km (0.099 R)
• M72: 38,586,976 km (0.103 R)
• M73: 39,065,838 km (0.099 R)
• M74: 41,559,036 km (0.064 R)
• M75: 42,190,339 km (0.089 R)
• M76: 42,754,174 km (0.092 R)
• M77: 42,895,544 km (0.119 R)
• M78: 43,320,551 km (0.104 R)
• M79: 44,031,889 km (0.104 R)
• M80: 44,818,924 km (0.101 R)
• M81: 49,415,169 km (0.06 R)

Planet 7 - Ice Giant

Semi-Major Axis: 13.7 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 882.5

Radius: 7.7

Gravity: 14.88 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 11.37 AU - 16.03 AU

Year: 19103 Days

Day: 22.8 Hours

Environment

Temp: -183 °C

Axial Tilt: 7.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (93)

Outer Limit: 56,662,125 km

• M1: 124,166 km (0.065 R)
• M2: 214,673 km (0.096 R)
• M3: 339,886 km (0.082 R)
• M4: 598,541 km (0.07 R)
• M5: 761,603 km (0.033 R)
• M6: 887,115 km (0.12 R)
• M7: 1,019,509 km (0.085 R)
• M8: 1,074,412 km (0.053 R)
• M9: 1,216,081 km (0.096 R)
• M10: 1,581,100 km (0.039 R)
• M11: 1,979,030 km (0.06 R)
• M12: 2,048,294 km (0.064 R)
• M13: 2,297,524 km (0.096 R)
• M14: 2,785,662 km (0.087 R)
• M15: 2,982,084 km (0.085 R)
• M16: 3,142,303 km (0.084 R)
• M17: 3,513,456 km (0.112 R)
• M18: 3,640,315 km (0.094 R)
• M19: 4,662,367 km (0.101 R)
• M20: 4,848,617 km (0.103 R)
• M21: 4,942,863 km (0.091 R)
• M22: 5,866,929 km (0.114 R)
• M23: 5,967,309 km (0.117 R)
• M24: 6,633,618 km (0.101 R)
• M25: 6,896,163 km (0.071 R)
• M26: 7,485,728 km (0.115 R)
• M27: 7,869,297 km (0.043 R)
• M28: 8,203,199 km (0.082 R)
• M29: 8,598,586 km (0.06 R)
• M30: 8,712,730 km (0.068 R)
• M31: 9,232,582 km (0.069 R)
• M32: 9,408,060 km (0.111 R)
• M33: 9,525,794 km (0.102 R)
• M34: 9,941,377 km (0.089 R)
• M35: 12,881,274 km (0.118 R)
• M36: 13,938,931 km (0.086 R)
• M37: 15,162,043 km (0.081 R)
• M38: 15,786,315 km (0.07 R)
• M39: 16,348,355 km (0.027 R)
• M40: 16,702,901 km (0.104 R)
• M41: 17,347,668 km (0.078 R)
• M42: 17,636,841 km (0.043 R)
• M43: 18,957,491 km (0.098 R)
• M44: 19,031,841 km (0.116 R)
• M45: 19,255,340 km (0.082 R)
• M46: 19,404,789 km (0.107 R)
• M47: 19,705,032 km (0.073 R)
• M48: 20,082,317 km (0.065 R)
• M49: 20,614,587 km (0.118 R)
• M50: 21,537,905 km (0.073 R)
• M51: 21,848,619 km (0.119 R)
• M52: 22,789,740 km (0.107 R)
• M53: 24,549,310 km (0.094 R)
• M54: 24,630,392 km (0.078 R)
• M55: 26,269,236 km (0.091 R)
• M56: 28,197,254 km (0.078 R)
• M57: 29,049,663 km (0.103 R)
• M58: 32,010,504 km (0.107 R)
• M59: 32,365,051 km (0.08 R)
• M60: 32,631,933 km (0.088 R)
• M61: 34,610,664 km (0.109 R)
• M62: 35,431,358 km (0.06 R)
• M63: 36,628,141 km (0.107 R)
• M64: 38,212,981 km (0.053 R)
• M65: 39,724,967 km (0.064 R)
• M66: 41,063,868 km (0.108 R)
• M67: 41,545,722 km (0.066 R)
• M68: 42,514,817 km (0.068 R)
• M69: 43,884,236 km (0.107 R)
• M70: 45,466,832 km (0.08 R)
• M71: 47,774,379 km (0.068 R)
• M72: 48,585,948 km (0.095 R)
• M73: 49,811,753 km (0.054 R)
• M74: 51,773,429 km (0.117 R)
• M75: 53,549,904 km (0.054 R)
• M76: 53,970,873 km (0.094 R)
• M77: 56,412,160 km (0.114 R)
• M78: 56,733,347 km (0.082 R)
• M79: 57,592,487 km (0.094 R)
• M80: 61,291,893 km (0.087 R)
• M81: 68,118,942 km (0.026 R)
• M82: 68,232,786 km (0.109 R)
• M83: 69,604,748 km (0.114 R)
• M84: 70,409,135 km (0.093 R)
• M85: 70,870,196 km (0.093 R)
• M86: 71,216,665 km (0.104 R)
• M87: 73,891,475 km (0.096 R)
• M88: 74,008,610 km (0.114 R)
• M89: 74,477,300 km (0.112 R)
• M90: 75,064,771 km (0.117 R)
• M91: 75,417,971 km (0.094 R)
• M92: 75,771,621 km (0.07 R)
• M93: 76,125,868 km (0.118 R)

Planet 8 - Ice Giant

Semi-Major Axis: 15.92 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 197.6

Radius: 4.6

Gravity: 9.34 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 15.92 AU - 15.92 AU

Year: 23930 Days

Day: 24 Hours

Environment

Temp: -192 °C

Axial Tilt: 27.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (94)

Outer Limit: 56,662,125 km

• M1: 308,321 km (0.094 R)
• M2: 767,437 km (0.095 R)
• M3: 910,004 km (0.104 R)
• M4: 952,340 km (0.094 R)
• M5: 1,386,323 km (0.11 R)
• M6: 1,459,926 km (0.105 R)
• M7: 1,585,588 km (0.025 R)
• M8: 1,636,750 km (0.119 R)
• M9: 1,714,691 km (0.104 R)
• M10: 1,874,162 km (0.049 R)
• M11: 1,983,069 km (0.09 R)
• M12: 2,094,221 km (0.078 R)
• M13: 2,469,262 km (0.079 R)
• M14: 2,833,832 km (0.045 R)
• M15: 3,150,382 km (0.083 R)
• M16: 3,182,545 km (0.107 R)
• M17: 3,444,790 km (0.072 R)
• M18: 3,679,958 km (0.079 R)
• M19: 3,989,775 km (0.077 R)
• M20: 4,344,023 km (0.055 R)
• M21: 4,561,389 km (0.036 R)
• M22: 4,597,891 km (0.116 R)
• M23: 4,671,343 km (0.113 R)
• M24: 4,708,144 km (0.105 R)
• M25: 5,272,727 km (0.065 R)
• M26: 7,432,022 km (0.096 R)
• M27: 7,779,089 km (0.095 R)
• M28: 8,533,960 km (0.115 R)
• M29: 8,669,496 km (0.109 R)
• M30: 8,851,556 km (0.059 R)
• M31: 8,988,738 km (0.089 R)
• M32: 9,498,268 km (0.071 R)
• M33: 9,874,507 km (0.115 R)
• M34: 10,593,324 km (0.091 R)
• M35: 10,885,489 km (0.079 R)
• M36: 12,232,917 km (0.077 R)
• M37: 12,334,793 km (0.071 R)
• M38: 12,590,755 km (0.07 R)
• M39: 16,018,042 km (0.111 R)
• M40: 16,465,639 km (0.075 R)
• M41: 16,917,126 km (0.098 R)
• M42: 17,258,508 km (0.109 R)
• M43: 17,717,175 km (0.095 R)
• M44: 17,774,770 km (0.115 R)
• M45: 17,948,005 km (0.067 R)
• M46: 19,651,326 km (0.103 R)
• M47: 20,371,041 km (0.074 R)
• M48: 20,673,379 km (0.088 R)
• M49: 21,528,181 km (0.11 R)
• M50: 22,269,887 km (0.107 R)
• M51: 23,208,763 km (0.119 R)
• M52: 23,461,434 km (0.058 R)
• M53: 24,160,655 km (0.106 R)
• M54: 24,931,233 km (0.089 R)
• M55: 25,189,888 km (0.106 R)
• M56: 25,775,115 km (0.081 R)
• M57: 25,905,714 km (0.081 R)
• M58: 27,025,155 km (0.057 R)
• M59: 27,891,925 km (0.116 R)
• M60: 28,429,729 km (0.113 R)
• M61: 28,699,903 km (0.042 R)
• M62: 28,970,974 km (0.114 R)
• M63: 29,379,227 km (0.116 R)
• M64: 29,789,274 km (0.099 R)
• M65: 29,995,121 km (0.098 R)
• M66: 30,753,582 km (0.096 R)
• M67: 31,728,063 km (0.074 R)
• M68: 31,868,086 km (0.111 R)
• M69: 32,995,606 km (0.094 R)
• M70: 33,066,515 km (0.1 R)
• M71: 33,707,093 km (0.031 R)
• M72: 34,136,289 km (0.093 R)
• M73: 35,580,208 km (0.084 R)
• M74: 36,309,647 km (0.101 R)
• M75: 36,456,104 km (0.051 R)
• M76: 36,676,162 km (0.073 R)
• M77: 37,339,030 km (0.097 R)
• M78: 38,676,734 km (0.046 R)
• M79: 38,901,131 km (0.08 R)
• M80: 40,029,997 km (0.059 R)
• M81: 40,181,240 km (0.037 R)
• M82: 40,408,629 km (0.101 R)
• M83: 43,791,485 km (0.076 R)
• M84: 44,337,967 km (0.1 R)
• M85: 48,226,314 km (0.1 R)
• M86: 49,438,207 km (0.117 R)
• M87: 50,415,081 km (0.077 R)
• M88: 50,987,741 km (0.088 R)
• M89: 51,398,088 km (0.059 R)
• M90: 53,133,723 km (0.074 R)
• M91: 54,301,484 km (0.103 R)
• M92: 55,561,996 km (0.112 R)
• M93: 55,815,115 km (0.083 R)
• M94: 56,577,167 km (0.117 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 234 - 13,116 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit