🌌 Stone's Star System Generator

Planet 1 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 749.1

Radius: 11.1

Gravity: 6.08 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 0.65 AU - 0.95 AU

Year: 494 Days

Day: 6.5 Hours

Environment

Temp: -166 °C

Axial Tilt: 15.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (48)

Outer Limit: 52,148,472 km

• M1: 144,512 km (0.059 R)
• M2: 217,515 km (0.088 R)
• M3: 290,968 km (0.05 R)
• M4: 365,916 km (0.078 R)
• M5: 446,699 km (0.119 R)
• M6: 594,352 km (0.038 R)
• M7: 672,891 km (0.054 R)
• M8: 751,131 km (0.068 R)
• M9: 932,294 km (0.052 R)
• M10: 1,016,069 km (0.082 R)
• M11: 1,191,697 km (0.068 R)
• M12: 1,316,461 km (0.099 R)
• M13: 1,389,016 km (0.106 R)
• M14: 1,514,978 km (0.063 R)
• M15: 1,735,784 km (0.068 R)
• M16: 1,809,685 km (0.115 R)
• M17: 1,884,634 km (0.088 R)
• M18: 1,980,077 km (0.078 R)
• M19: 2,149,123 km (0.045 R)
• M20: 2,384,590 km (0.084 R)
• M21: 2,628,584 km (0.108 R)
• M22: 2,714,005 km (0.1 R)
• M23: 2,873,326 km (0.106 R)
• M24: 3,110,738 km (0.089 R)
• M25: 3,201,394 km (0.104 R)
• M26: 3,277,689 km (0.036 R)
• M27: 3,393,179 km (0.054 R)
• M28: 3,502,385 km (0.1 R)
• M29: 3,596,782 km (0.032 R)
• M30: 3,708,082 km (0.112 R)
• M31: 3,885,356 km (0.119 R)
• M32: 3,958,808 km (0.063 R)
• M33: 4,032,560 km (0.05 R)
• M34: 4,400,122 km (0.085 R)
• M35: 4,562,286 km (0.116 R)
• M36: 4,700,365 km (0.053 R)
• M37: 5,007,190 km (0.069 R)
• M38: 5,078,399 km (0.082 R)
• M39: 5,194,636 km (0.032 R)
• M40: 5,266,593 km (0.083 R)
• M41: 5,548,585 km (0.118 R)
• M42: 5,631,462 km (0.085 R)
• M43: 5,724,063 km (0.104 R)
• M44: 5,920,037 km (0.102 R)
• M45: 6,146,677 km (0.109 R)
• M46: 6,251,695 km (0.104 R)
• M47: 6,443,928 km (0.074 R)
• M48: 6,530,994 km (0.116 R)

Planet 2 - Gas Giant

Semi-Major Axis: 1.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 887.9

Radius: 9.7

Gravity: 9.44 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 0.96 AU - 1.28 AU

Year: 818 Days

Day: 9.3 Hours

Environment

Temp: -183 °C

Axial Tilt: 19.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (59)

Outer Limit: 52,148,472 km

• M1: 120,875 km (0.063 R)
• M2: 195,524 km (0.053 R)
• M3: 260,001 km (0.044 R)
• M4: 332,556 km (0.039 R)
• M5: 414,536 km (0.075 R)
• M6: 475,572 km (0.108 R)
• M7: 545,434 km (0.073 R)
• M8: 691,441 km (0.093 R)
• M9: 790,625 km (0.119 R)
• M10: 882,328 km (0.114 R)
• M11: 1,023,698 km (0.104 R)
• M12: 1,110,914 km (0.073 R)
• M13: 1,243,158 km (0.079 R)
• M14: 1,440,328 km (0.048 R)
• M15: 1,593,068 km (0.108 R)
• M16: 1,759,421 km (0.103 R)
• M17: 1,848,880 km (0.089 R)
• M18: 2,083,599 km (0.032 R)
• M19: 2,222,127 km (0.086 R)
• M20: 2,319,066 km (0.066 R)
• M21: 2,408,675 km (0.099 R)
• M22: 2,825,754 km (0.106 R)
• M23: 2,940,795 km (0.041 R)
• M24: 3,205,583 km (0.034 R)
• M25: 3,285,468 km (0.105 R)
• M26: 3,396,620 km (0.05 R)
• M27: 3,529,463 km (0.092 R)
• M28: 3,768,819 km (0.105 R)
• M29: 3,895,828 km (0.118 R)
• M30: 4,013,412 km (0.094 R)
• M31: 4,088,959 km (0.097 R)
• M32: 4,484,944 km (0.11 R)
• M33: 4,574,553 km (0.097 R)
• M34: 4,721,608 km (0.094 R)
• M35: 5,242,657 km (0.085 R)
• M36: 5,432,347 km (0.092 R)
• M37: 5,540,058 km (0.117 R)
• M38: 5,794,075 km (0.096 R)
• M39: 6,015,031 km (0.034 R)
• M40: 6,126,482 km (0.116 R)
• M41: 6,226,114 km (0.094 R)
• M42: 6,414,457 km (0.085 R)
• M43: 6,681,340 km (0.075 R)
• M44: 7,213,011 km (0.061 R)
• M45: 7,344,807 km (0.066 R)
• M46: 7,437,408 km (0.1 R)
• M47: 7,583,864 km (0.08 R)
• M48: 7,933,923 km (0.059 R)
• M49: 8,083,671 km (0.113 R)
• M50: 8,316,894 km (0.101 R)
• M51: 8,427,297 km (0.084 R)
• M52: 8,510,473 km (0.119 R)
• M53: 8,789,922 km (0.066 R)
• M54: 8,930,694 km (0.12 R)
• M55: 9,129,060 km (0.076 R)
• M56: 9,357,646 km (0.111 R)
• M57: 9,487,048 km (0.094 R)
• M58: 9,689,454 km (0.093 R)
• M59: 9,791,181 km (0.098 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 522.6

Radius: 12.3

Gravity: 3.45 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 1.86 AU - 2.52 AU

Year: 2237 Days

Day: 12.5 Hours

Environment

Temp: -212 °C

Axial Tilt: 13.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (66)

Outer Limit: 52,148,472 km

• M1: 155,582 km (0.033 R)
• M2: 244,443 km (0.079 R)
• M3: 326,423 km (0.097 R)
• M4: 424,110 km (0.065 R)
• M5: 501,302 km (0.117 R)
• M6: 650,900 km (0.057 R)
• M7: 1,017,565 km (0.102 R)
• M8: 1,166,564 km (0.046 R)
• M9: 1,253,780 km (0.119 R)
• M10: 1,373,907 km (0.107 R)
• M11: 1,466,508 km (0.086 R)
• M12: 1,691,503 km (0.098 R)
• M13: 1,825,244 km (0.067 R)
• M14: 1,962,574 km (0.038 R)
• M15: 2,284,659 km (0.1 R)
• M16: 2,521,622 km (0.088 R)
• M17: 2,598,216 km (0.083 R)
• M18: 2,885,743 km (0.053 R)
• M19: 3,449,129 km (0.08 R)
• M20: 3,577,483 km (0.079 R)
• M21: 3,838,981 km (0.083 R)
• M22: 3,957,312 km (0.117 R)
• M23: 4,365,415 km (0.098 R)
• M24: 4,803,139 km (0.05 R)
• M25: 4,979,066 km (0.038 R)
• M26: 5,157,087 km (0.077 R)
• M27: 5,271,530 km (0.101 R)
• M28: 5,519,563 km (0.074 R)
• M29: 5,603,039 km (0.102 R)
• M30: 5,771,486 km (0.097 R)
• M31: 5,958,633 km (0.053 R)
• M32: 6,674,010 km (0.119 R)
• M33: 6,870,731 km (0.113 R)
• M34: 7,233,057 km (0.053 R)
• M35: 7,938,860 km (0.086 R)
• M36: 8,185,547 km (0.113 R)
• M37: 8,280,990 km (0.119 R)
• M38: 8,396,031 km (0.083 R)
• M39: 8,492,372 km (0.085 R)
• M40: 8,608,460 km (0.073 R)
• M41: 9,097,944 km (0.106 R)
• M42: 9,556,312 km (0.071 R)
• M43: 10,144,980 km (0.081 R)
• M44: 10,288,893 km (0.088 R)
• M45: 10,997,239 km (0.069 R)
• M46: 11,614,031 km (0.111 R)
• M47: 11,850,844 km (0.054 R)
• M48: 12,024,228 km (0.051 R)
• M49: 12,132,986 km (0.1 R)
• M50: 12,373,389 km (0.12 R)
• M51: 12,637,430 km (0.1 R)
• M52: 12,903,415 km (0.117 R)
• M53: 13,059,296 km (0.101 R)
• M54: 13,260,804 km (0.115 R)
• M55: 13,440,770 km (0.074 R)
• M56: 13,644,223 km (0.118 R)
• M57: 13,803,246 km (0.097 R)
• M58: 13,939,978 km (0.055 R)
• M59: 14,537,622 km (0.088 R)
• M60: 14,653,560 km (0.083 R)
• M61: 14,862,997 km (0.082 R)
• M62: 14,979,684 km (0.039 R)
• M63: 15,473,506 km (0.119 R)
• M64: 15,639,410 km (0.111 R)
• M65: 15,829,549 km (0.104 R)
• M66: 15,996,650 km (0.113 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 881.3

Radius: 9.6

Gravity: 9.56 G

Time & Orbit

Eccentricity (e): 0.013

Orbit Range: 2.47 AU - 2.53 AU

Year: 2728 Days

Day: 7.7 Hours

Environment

Temp: -213 °C

Axial Tilt: 25.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (77)

Outer Limit: 52,148,472 km

• M1: 159,471 km (0.072 R)
• M2: 227,090 km (0.115 R)
• M3: 341,682 km (0.093 R)
• M4: 480,808 km (0.062 R)
• M5: 594,502 km (0.097 R)
• M6: 850,913 km (0.055 R)
• M7: 1,201,271 km (0.077 R)
• M8: 1,298,809 km (0.116 R)
• M9: 1,450,351 km (0.11 R)
• M10: 1,840,951 km (0.103 R)
• M11: 1,940,135 km (0.073 R)
• M12: 2,203,427 km (0.108 R)
• M13: 2,263,565 km (0.115 R)
• M14: 2,354,820 km (0.096 R)
• M15: 2,493,946 km (0.081 R)
• M16: 2,699,942 km (0.116 R)
• M17: 2,780,725 km (0.119 R)
• M18: 3,316,435 km (0.089 R)
• M19: 3,490,567 km (0.104 R)
• M20: 3,649,739 km (0.104 R)
• M21: 3,721,397 km (0.091 R)
• M22: 3,793,353 km (0.106 R)
• M23: 4,160,616 km (0.026 R)
• M24: 4,254,264 km (0.063 R)
• M25: 4,329,662 km (0.114 R)
• M26: 4,481,803 km (0.077 R)
• M27: 4,635,739 km (0.093 R)
• M28: 4,909,503 km (0.111 R)
• M29: 5,168,307 km (0.103 R)
• M30: 5,350,218 km (0.098 R)
• M31: 6,141,292 km (0.061 R)
• M32: 6,880,006 km (0.069 R)
• M33: 7,035,588 km (0.118 R)
• M34: 7,350,342 km (0.102 R)
• M35: 7,623,657 km (0.119 R)
• M36: 7,715,510 km (0.076 R)
• M37: 7,784,774 km (0.051 R)
• M38: 7,946,938 km (0.065 R)
• M39: 8,345,467 km (0.091 R)
• M40: 8,440,162 km (0.111 R)
• M41: 8,967,644 km (0.098 R)
• M42: 9,040,499 km (0.112 R)
• M43: 9,137,737 km (0.093 R)
• M44: 9,333,411 km (0.113 R)
• M45: 9,505,748 km (0.113 R)
• M46: 9,704,115 km (0.096 R)
• M47: 9,853,713 km (0.067 R)
• M48: 10,205,866 km (0.078 R)
• M49: 10,307,293 km (0.073 R)
• M50: 10,896,709 km (0.086 R)
• M51: 11,156,261 km (0.068 R)
• M52: 12,001,040 km (0.102 R)
• M53: 12,161,708 km (0.063 R)
• M54: 12,242,342 km (0.084 R)
• M55: 12,675,278 km (0.1 R)
• M56: 12,948,444 km (0.099 R)
• M57: 13,251,080 km (0.097 R)
• M58: 14,145,077 km (0.063 R)
• M59: 14,770,845 km (0.031 R)
• M60: 15,173,862 km (0.12 R)
• M61: 15,260,628 km (0.069 R)
• M62: 15,697,305 km (0.104 R)
• M63: 15,843,761 km (0.099 R)
• M64: 16,049,458 km (0.117 R)
• M65: 16,345,063 km (0.055 R)
• M66: 16,582,774 km (0.043 R)
• M67: 17,605,874 km (0.059 R)
• M68: 18,033,126 km (0.047 R)
• M69: 18,217,281 km (0.115 R)
• M70: 18,556,569 km (0.108 R)
• M71: 18,866,835 km (0.072 R)
• M72: 18,960,184 km (0.103 R)
• M73: 19,460,888 km (0.111 R)
• M74: 19,744,525 km (0.077 R)
• M75: 20,283,826 km (0.097 R)
• M76: 20,924,703 km (0.086 R)
• M77: 21,247,535 km (0.114 R)

Planet 5 - Ice Giant

Semi-Major Axis: 5.69 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 870.3

Radius: 6.4

Gravity: 21.25 G

Time & Orbit

Eccentricity (e): 0.056

Orbit Range: 5.37 AU - 6.01 AU

Year: 9369 Days

Day: 19.6 Hours

Environment

Temp: -222 °C

Axial Tilt: 46.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (94)

Outer Limit: 52,148,472 km

• M1: 179,966 km (0.073 R)
• M2: 668,104 km (0.081 R)
• M3: 979,118 km (0.118 R)
• M4: 1,119,291 km (0.105 R)
• M5: 1,223,711 km (0.111 R)
• M6: 1,331,122 km (0.087 R)
• M7: 1,555,668 km (0.09 R)
• M8: 1,602,044 km (0.11 R)
• M9: 1,744,012 km (0.105 R)
• M10: 1,865,485 km (0.105 R)
• M11: 2,065,647 km (0.106 R)
• M12: 2,596,121 km (0.099 R)
• M13: 2,651,473 km (0.095 R)
• M14: 2,876,617 km (0.099 R)
• M15: 2,991,509 km (0.072 R)
• M16: 3,375,526 km (0.071 R)
• M17: 3,901,064 km (0.103 R)
• M18: 3,964,643 km (0.054 R)
• M19: 6,171,660 km (0.097 R)
• M20: 6,926,381 km (0.09 R)
• M21: 7,119,512 km (0.087 R)
• M22: 7,275,393 km (0.108 R)
• M23: 7,670,032 km (0.05 R)
• M24: 8,112,094 km (0.108 R)
• M25: 8,234,166 km (0.116 R)
• M26: 8,315,846 km (0.115 R)
• M27: 9,020,901 km (0.102 R)
• M28: 9,444,712 km (0.033 R)
• M29: 9,616,002 km (0.106 R)
• M30: 9,788,338 km (0.086 R)
• M31: 10,048,788 km (0.083 R)
• M32: 10,092,321 km (0.028 R)
• M33: 10,399,595 km (0.082 R)
• M34: 10,754,292 km (0.07 R)
• M35: 10,888,481 km (0.032 R)
• M36: 12,634,288 km (0.076 R)
• M37: 12,681,411 km (0.043 R)
• M38: 13,539,355 km (0.097 R)
• M39: 14,121,740 km (0.038 R)
• M40: 15,210,513 km (0.089 R)
• M41: 15,613,081 km (0.054 R)
• M42: 15,663,645 km (0.089 R)
• M43: 15,815,636 km (0.04 R)
• M44: 16,583,223 km (0.105 R)
• M45: 16,841,728 km (0.058 R)
• M46: 16,893,639 km (0.074 R)
• M47: 16,945,549 km (0.093 R)
• M48: 16,997,460 km (0.117 R)
• M49: 17,415,137 km (0.072 R)
• M50: 18,207,557 km (0.075 R)
• M51: 18,474,290 km (0.108 R)
• M52: 18,581,252 km (0.086 R)
• M53: 19,553,938 km (0.068 R)
• M54: 19,936,759 km (0.114 R)
• M55: 20,543,228 km (0.116 R)
• M56: 20,709,581 km (0.106 R)
• M57: 20,876,532 km (0.077 R)
• M58: 20,987,983 km (0.115 R)
• M59: 23,375,116 km (0.116 R)
• M60: 24,131,184 km (0.077 R)
• M61: 24,365,454 km (0.102 R)
• M62: 25,667,404 km (0.117 R)
• M63: 26,447,258 km (0.097 R)
• M64: 29,331,206 km (0.076 R)
• M65: 30,398,587 km (0.081 R)
• M66: 30,651,706 km (0.097 R)
• M67: 31,223,469 km (0.113 R)
• M68: 31,670,617 km (0.102 R)
• M69: 31,734,645 km (0.089 R)
• M70: 31,863,000 km (0.105 R)
• M71: 32,700,748 km (0.043 R)
• M72: 33,089,852 km (0.09 R)
• M73: 33,219,853 km (0.054 R)
• M74: 34,595,704 km (0.086 R)
• M75: 34,992,139 km (0.103 R)
• M76: 35,390,069 km (0.112 R)
• M77: 35,523,062 km (0.117 R)
• M78: 35,656,204 km (0.108 R)
• M79: 35,789,645 km (0.086 R)
• M80: 36,525,816 km (0.077 R)
• M81: 39,382,687 km (0.103 R)
• M82: 40,142,793 km (0.084 R)
• M83: 42,876,096 km (0.114 R)
• M84: 43,515,477 km (0.116 R)
• M85: 44,659,752 km (0.088 R)
• M86: 45,163,448 km (0.117 R)
• M87: 45,596,683 km (0.117 R)
• M88: 46,321,933 km (0.037 R)
• M89: 46,394,638 km (0.096 R)
• M90: 46,904,767 km (0.11 R)
• M91: 46,977,771 km (0.104 R)
• M92: 47,416,840 km (0.084 R)
• M93: 48,446,373 km (0.104 R)
• M94: 49,038,032 km (0.078 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.02 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 848.6

Radius: 3.9

Gravity: 55.79 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 5.59 AU - 6.45 AU

Year: 10195 Days

Day: 24.7 Hours

Environment

Temp: -233 °C

Axial Tilt: 3.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (93)

Outer Limit: 52,148,472 km

• M1: 61,634 km (0.12 R)
• M2: 108,608 km (0.1 R)
• M3: 153,936 km (0.042 R)
• M4: 332,855 km (0.076 R)
• M5: 562,488 km (0.106 R)
• M6: 892,052 km (0.062 R)
• M7: 1,034,170 km (0.079 R)
• M8: 1,097,300 km (0.093 R)
• M9: 1,385,426 km (0.103 R)
• M10: 1,598,154 km (0.107 R)
• M11: 2,214,198 km (0.084 R)
• M12: 2,296,028 km (0.054 R)
• M13: 2,865,846 km (0.117 R)
• M14: 3,227,873 km (0.09 R)
• M15: 3,445,688 km (0.05 R)
• M16: 3,961,052 km (0.093 R)
• M17: 4,227,785 km (0.102 R)
• M18: 4,604,024 km (0.083 R)
• M19: 4,708,443 km (0.116 R)
• M20: 5,206,155 km (0.099 R)
• M21: 5,278,710 km (0.1 R)
• M22: 5,757,872 km (0.112 R)
• M23: 5,795,272 km (0.036 R)
• M24: 6,021,613 km (0.099 R)
• M25: 6,289,394 km (0.091 R)
• M26: 7,196,106 km (0.086 R)
• M27: 8,142,911 km (0.038 R)
• M28: 8,269,321 km (0.082 R)
• M29: 9,880,191 km (0.117 R)
• M30: 10,377,455 km (0.118 R)
• M31: 10,929,022 km (0.097 R)
• M32: 11,537,287 km (0.072 R)
• M33: 12,688,891 km (0.097 R)
• M34: 13,377,490 km (0.066 R)
• M35: 14,483,617 km (0.093 R)
• M36: 15,828,352 km (0.098 R)
• M37: 15,986,028 km (0.063 R)
• M38: 16,355,984 km (0.112 R)
• M39: 17,050,717 km (0.082 R)
• M40: 17,591,513 km (0.065 R)
• M41: 18,193,046 km (0.077 R)
• M42: 19,135,662 km (0.111 R)
• M43: 20,264,976 km (0.088 R)
• M44: 20,436,266 km (0.038 R)
• M45: 20,607,855 km (0.1 R)
• M46: 22,942,928 km (0.098 R)
• M47: 23,121,398 km (0.073 R)
• M48: 23,180,938 km (0.092 R)
• M49: 23,419,846 km (0.077 R)
• M50: 23,900,055 km (0.1 R)
• M51: 24,322,968 km (0.062 R)
• M52: 24,383,555 km (0.076 R)
• M53: 25,114,790 km (0.068 R)
• M54: 25,237,310 km (0.049 R)
• M55: 27,036,823 km (0.036 R)
• M56: 27,225,466 km (0.117 R)
• M57: 28,621,065 km (0.088 R)
• M58: 29,070,008 km (0.044 R)
• M59: 30,300,301 km (0.108 R)
• M60: 30,561,499 km (0.1 R)
• M61: 31,613,620 km (0.095 R)
• M62: 32,210,666 km (0.108 R)
• M63: 32,277,237 km (0.114 R)
• M64: 32,610,690 km (0.109 R)
• M65: 33,550,614 km (0.117 R)
• M66: 33,618,082 km (0.062 R)
• M67: 35,388,274 km (0.076 R)
• M68: 35,938,944 km (0.097 R)
• M69: 36,353,928 km (0.097 R)
• M70: 36,770,409 km (0.063 R)
• M71: 37,678,318 km (0.096 R)
• M72: 37,888,802 km (0.087 R)
• M73: 37,959,113 km (0.068 R)
• M74: 38,099,735 km (0.082 R)
• M75: 38,522,798 km (0.095 R)
• M76: 40,158,800 km (0.063 R)
• M77: 40,445,729 km (0.086 R)
• M78: 40,949,276 km (0.109 R)
• M79: 42,035,506 km (0.075 R)
• M80: 42,180,915 km (0.049 R)
• M81: 43,277,766 km (0.087 R)
• M82: 43,351,219 km (0.114 R)
• M83: 43,792,832 km (0.066 R)
• M84: 44,088,138 km (0.116 R)
• M85: 45,350,295 km (0.081 R)
• M86: 45,648,893 km (0.063 R)
• M87: 49,053,890 km (0.113 R)
• M88: 49,437,309 km (0.113 R)
• M89: 50,129,798 km (0.088 R)
• M90: 50,361,375 km (0.118 R)
• M91: 50,670,744 km (0.065 R)
• M92: 51,213,485 km (0.051 R)
• M93: 51,836,111 km (0.075 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 215 - 12,446 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit