🌌 Stone's Star System Generator

Planet 1 - Gas Giant

Semi-Major Axis: 5.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 146.2

Radius: 12.3

Gravity: 0.97 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 4.94 AU - 6.02 AU

Year: 4709 Days

Day: 14.1 Hours

Environment

Temp: -154 °C

Axial Tilt: 28 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (50)

Outer Limit: 102,273,818 km

• M1: 170,093 km (0.078 R)
• M2: 246,836 km (0.111 R)
• M3: 339,438 km (0.092 R)
• M4: 431,141 km (0.084 R)
• M5: 939,923 km (0.102 R)
• M6: 1,034,020 km (0.06 R)
• M7: 1,232,238 km (0.101 R)
• M8: 1,315,264 km (0.066 R)
• M9: 1,713,195 km (0.057 R)
• M10: 2,148,375 km (0.098 R)
• M11: 2,237,087 km (0.1 R)
• M12: 2,809,149 km (0.104 R)
• M13: 2,920,599 km (0.08 R)
• M14: 3,293,098 km (0.064 R)
• M15: 4,005,184 km (0.104 R)
• M16: 4,274,460 km (0.11 R)
• M17: 4,780,699 km (0.056 R)
• M18: 4,897,685 km (0.1 R)
• M19: 5,134,648 km (0.117 R)
• M20: 5,497,123 km (0.104 R)
• M21: 5,708,206 km (0.064 R)
• M22: 5,832,372 km (0.04 R)
• M23: 6,120,049 km (0.071 R)
• M24: 6,210,855 km (0.077 R)
• M25: 6,560,016 km (0.05 R)
• M26: 6,653,066 km (0.099 R)
• M27: 6,746,415 km (0.101 R)
• M28: 7,220,341 km (0.113 R)
• M29: 7,685,291 km (0.114 R)
• M30: 8,020,690 km (0.065 R)
• M31: 8,160,115 km (0.106 R)
• M32: 8,890,302 km (0.097 R)
• M33: 8,972,581 km (0.071 R)
• M34: 9,117,541 km (0.076 R)
• M35: 9,430,650 km (0.08 R)
• M36: 9,620,190 km (0.049 R)
• M37: 10,024,404 km (0.081 R)
• M38: 10,174,899 km (0.102 R)
• M39: 10,543,209 km (0.071 R)
• M40: 11,923,549 km (0.11 R)
• M41: 12,334,943 km (0.055 R)
• M42: 12,611,848 km (0.111 R)
• M43: 12,960,711 km (0.08 R)
• M44: 13,077,846 km (0.067 R)
• M45: 13,787,389 km (0.108 R)
• M46: 14,606,736 km (0.086 R)
• M47: 14,777,427 km (0.113 R)
• M48: 14,899,798 km (0.106 R)
• M49: 15,318,224 km (0.099 R)
• M50: 16,191,726 km (0.107 R)

Planet 2 - Gas Giant

Semi-Major Axis: 6.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 12.2

Radius: 13.6

Gravity: 0.07 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 5.34 AU - 7.28 AU

Year: 5819 Days

Day: 6.9 Hours

Environment

Temp: -156 °C

Axial Tilt: 46.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 102,273,818 km

• M1: 176,376 km (0.111 R)
• M2: 270,623 km (0.062 R)
• M3: 460,163 km (0.06 R)
• M4: 671,096 km (0.062 R)
• M5: 872,156 km (0.046 R)
• M6: 1,112,859 km (0.083 R)
• M7: 1,219,372 km (0.094 R)
• M8: 1,416,393 km (0.1 R)
• M9: 2,125,935 km (0.108 R)
• M10: 2,212,852 km (0.11 R)
• M11: 2,357,812 km (0.116 R)
• M12: 2,456,397 km (0.076 R)
• M13: 2,632,175 km (0.05 R)
• M14: 2,899,356 km (0.057 R)
• M15: 3,067,654 km (0.099 R)
• M16: 3,573,444 km (0.068 R)
• M17: 3,977,508 km (0.053 R)
• M18: 4,245,139 km (0.098 R)
• M19: 4,945,257 km (0.12 R)
• M20: 5,040,700 km (0.095 R)
• M21: 5,374,154 km (0.094 R)
• M22: 5,648,367 km (0.045 R)
• M23: 5,848,678 km (0.064 R)
• M24: 5,994,835 km (0.077 R)
• M25: 6,394,411 km (0.105 R)
• M26: 6,944,632 km (0.082 R)
• M27: 7,207,476 km (0.117 R)
• M28: 7,854,337 km (0.094 R)
• M29: 8,040,886 km (0.073 R)

Planet 3 - Gas Giant

Semi-Major Axis: 7.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 327.2

Radius: 14.2

Gravity: 1.62 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 6.62 AU - 7.56 AU

Year: 6930 Days

Day: 9.9 Hours

Environment

Temp: -159 °C

Axial Tilt: 38 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (74)

Outer Limit: 102,273,818 km

• M1: 177,573 km (0.082 R)
• M2: 305,928 km (0.056 R)
• M3: 418,724 km (0.104 R)
• M4: 648,806 km (0.081 R)
• M5: 977,173 km (0.117 R)
• M6: 1,284,447 km (0.073 R)
• M7: 1,720,824 km (0.107 R)
• M8: 1,904,979 km (0.095 R)
• M9: 2,008,351 km (0.041 R)
• M10: 2,202,978 km (0.05 R)
• M11: 2,348,537 km (0.093 R)
• M12: 2,707,422 km (0.103 R)
• M13: 3,063,914 km (0.077 R)
• M14: 3,165,790 km (0.097 R)
• M15: 3,289,358 km (0.105 R)
• M16: 3,541,730 km (0.118 R)
• M17: 4,132,940 km (0.057 R)
• M18: 4,223,148 km (0.086 R)
• M19: 4,544,335 km (0.069 R)
• M20: 4,637,534 km (0.073 R)
• M21: 5,456,283 km (0.11 R)
• M22: 6,189,911 km (0.104 R)
• M23: 6,397,852 km (0.114 R)
• M24: 6,874,321 km (0.097 R)
• M25: 7,307,557 km (0.114 R)
• M26: 7,444,738 km (0.095 R)
• M27: 7,805,568 km (0.107 R)
• M28: 8,718,115 km (0.082 R)
• M29: 9,514,574 km (0.091 R)
• M30: 9,664,471 km (0.12 R)
• M31: 9,815,415 km (0.106 R)
• M32: 10,674,556 km (0.053 R)
• M33: 11,050,196 km (0.083 R)
• M34: 11,814,641 km (0.097 R)
• M35: 12,138,222 km (0.113 R)
• M36: 13,327,226 km (0.092 R)
• M37: 13,495,374 km (0.108 R)
• M38: 13,664,120 km (0.065 R)
• M39: 13,867,573 km (0.09 R)
• M40: 14,726,414 km (0.093 R)
• M41: 14,969,960 km (0.089 R)
• M42: 15,567,005 km (0.12 R)
• M43: 16,387,250 km (0.111 R)
• M44: 16,784,582 km (0.094 R)
• M45: 17,039,048 km (0.096 R)
• M46: 17,148,404 km (0.042 R)
• M47: 17,258,209 km (0.108 R)
• M48: 17,958,327 km (0.072 R)
• M49: 18,106,877 km (0.106 R)
• M50: 18,218,627 km (0.098 R)
• M51: 19,158,551 km (0.047 R)
• M52: 19,653,570 km (0.111 R)
• M53: 19,806,758 km (0.097 R)
• M54: 20,268,567 km (0.064 R)
• M55: 20,811,906 km (0.085 R)
• M56: 20,968,086 km (0.113 R)
• M57: 21,085,371 km (0.088 R)
• M58: 22,032,176 km (0.109 R)
• M59: 22,390,762 km (0.08 R)
• M60: 22,590,774 km (0.12 R)
• M61: 22,912,111 km (0.118 R)
• M62: 23,113,769 km (0.113 R)
• M63: 23,397,107 km (0.092 R)
• M64: 23,844,554 km (0.094 R)
• M65: 24,541,531 km (0.102 R)
• M66: 24,830,554 km (0.069 R)
• M67: 25,328,565 km (0.118 R)
• M68: 25,830,017 km (0.052 R)
• M69: 26,166,014 km (0.117 R)
• M70: 26,334,611 km (0.117 R)
• M71: 26,630,515 km (0.083 R)
• M72: 27,439,241 km (0.058 R)
• M73: 28,428,981 km (0.106 R)
• M74: 28,993,563 km (0.093 R)

Planet 4 - Ice Giant

Semi-Major Axis: 12.6 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 688.5

Radius: 4.6

Gravity: 32.54 G

Time & Orbit

Eccentricity (e): 0.111

Orbit Range: 11.2 AU - 14 AU

Year: 16418 Days

Day: 23 Hours

Environment

Temp: -190 °C

Axial Tilt: 39.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (95)

Outer Limit: 102,273,818 km

• M1: 96,341 km (0.03 R)
• M2: 144,960 km (0.088 R)
• M3: 369,956 km (0.113 R)
• M4: 439,369 km (0.098 R)
• M5: 737,518 km (0.111 R)
• M6: 965,804 km (0.06 R)
• M7: 1,063,042 km (0.088 R)
• M8: 1,189,303 km (0.108 R)
• M9: 1,267,244 km (0.053 R)
• M10: 1,456,036 km (0.107 R)
• M11: 1,741,020 km (0.054 R)
• M12: 1,950,756 km (0.067 R)
• M13: 2,426,926 km (0.105 R)
• M14: 2,593,279 km (0.025 R)
• M15: 3,150,681 km (0.088 R)
• M16: 3,259,139 km (0.115 R)
• M17: 3,405,745 km (0.075 R)
• M18: 3,592,144 km (0.081 R)
• M19: 3,667,541 km (0.074 R)
• M20: 4,695,728 km (0.103 R)
• M21: 4,737,017 km (0.04 R)
• M22: 4,986,845 km (0.116 R)
• M23: 5,412,900 km (0.111 R)
• M24: 7,566,212 km (0.082 R)
• M25: 8,203,349 km (0.043 R)
• M26: 8,503,293 km (0.041 R)
• M27: 9,268,486 km (0.096 R)
• M28: 10,918,401 km (0.108 R)
• M29: 11,414,018 km (0.107 R)
• M30: 11,748,669 km (0.112 R)
• M31: 12,256,554 km (0.093 R)
• M32: 14,179,185 km (0.028 R)
• M33: 14,840,558 km (0.041 R)
• M34: 15,144,540 km (0.051 R)
• M35: 15,389,133 km (0.085 R)
• M36: 15,635,221 km (0.099 R)
• M37: 15,882,357 km (0.1 R)
• M38: 16,068,756 km (0.106 R)
• M39: 16,884,364 km (0.059 R)
• M40: 17,201,661 km (0.105 R)
• M41: 17,842,089 km (0.065 R)
• M42: 18,686,420 km (0.045 R)
• M43: 19,080,460 km (0.118 R)
• M44: 20,480,996 km (0.106 R)
• M45: 21,432,887 km (0.025 R)
• M46: 21,570,068 km (0.036 R)
• M47: 21,638,734 km (0.112 R)
• M48: 21,914,293 km (0.094 R)
• M49: 22,329,726 km (0.096 R)
• M50: 22,468,703 km (0.12 R)
• M51: 22,538,415 km (0.068 R)
• M52: 25,964,356 km (0.092 R)
• M53: 26,403,875 km (0.115 R)
• M54: 27,886,539 km (0.088 R)
• M55: 29,396,131 km (0.07 R)
• M56: 31,087,036 km (0.105 R)
• M57: 32,415,016 km (0.043 R)
• M58: 32,809,207 km (0.069 R)
• M59: 33,841,282 km (0.104 R)
• M60: 34,241,157 km (0.099 R)
• M61: 36,018,829 km (0.12 R)
• M62: 37,247,925 km (0.079 R)
• M63: 37,412,782 km (0.052 R)
• M64: 39,915,704 km (0.085 R)
• M65: 40,338,019 km (0.116 R)
• M66: 41,699,658 km (0.101 R)
• M67: 42,386,013 km (0.089 R)
• M68: 42,989,641 km (0.096 R)
• M69: 43,162,726 km (0.066 R)
• M70: 44,642,548 km (0.04 R)
• M71: 44,730,063 km (0.117 R)
• M72: 44,905,391 km (0.109 R)
• M73: 46,937,678 km (0.09 R)
• M74: 47,830,628 km (0.069 R)
• M75: 49,090,242 km (0.104 R)
• M76: 49,270,956 km (0.067 R)
• M77: 50,908,305 km (0.114 R)
• M78: 50,999,859 km (0.098 R)
• M79: 51,825,639 km (0.07 R)
• M80: 51,917,642 km (0.04 R)
• M81: 53,304,713 km (0.098 R)
• M82: 53,862,863 km (0.106 R)
• M83: 54,142,761 km (0.071 R)
• M84: 55,266,989 km (0.089 R)
• M85: 55,455,033 km (0.072 R)
• M86: 58,397,773 km (0.12 R)
• M87: 60,613,766 km (0.1 R)
• M88: 60,807,794 km (0.044 R)
• M89: 61,390,927 km (0.099 R)
• M90: 62,955,122 km (0.081 R)
• M91: 63,249,980 km (0.12 R)
• M92: 63,348,266 km (0.113 R)
• M93: 64,928,917 km (0.084 R)
• M94: 65,226,616 km (0.049 R)
• M95: 65,823,661 km (0.115 R)

Planet 5 - Ice Giant

Semi-Major Axis: 14.5 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 576.9

Radius: 3.9

Gravity: 37.93 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 13.09 AU - 15.91 AU

Year: 20269 Days

Day: 23.4 Hours

Environment

Temp: -187 °C

Axial Tilt: 14.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (96)

Outer Limit: 102,273,818 km

• M1: 155,881 km (0.102 R)
• M2: 253,419 km (0.038 R)
• M3: 352,303 km (0.084 R)
• M4: 672,143 km (0.113 R)
• M5: 763,248 km (0.044 R)
• M6: 834,307 km (0.06 R)
• M7: 1,907,672 km (0.108 R)
• M8: 2,136,407 km (0.111 R)
• M9: 2,478,388 km (0.067 R)
• M10: 2,800,472 km (0.069 R)
• M11: 3,135,721 km (0.059 R)
• M12: 3,173,719 km (0.112 R)
• M13: 3,483,536 km (0.102 R)
• M14: 3,722,294 km (0.116 R)
• M15: 4,641,872 km (0.089 R)
• M16: 5,627,423 km (0.036 R)
• M17: 6,239,129 km (0.064 R)
• M18: 6,723,826 km (0.096 R)
• M19: 6,773,044 km (0.117 R)
• M20: 6,970,812 km (0.115 R)
• M21: 7,321,469 km (0.09 R)
• M22: 7,987,778 km (0.09 R)
• M23: 8,144,258 km (0.089 R)
• M24: 8,301,934 km (0.1 R)
• M25: 9,158,980 km (0.06 R)
• M26: 9,542,699 km (0.059 R)
• M27: 11,187,677 km (0.033 R)
• M28: 11,421,349 km (0.103 R)
• M29: 11,953,019 km (0.113 R)
• M30: 13,595,754 km (0.089 R)
• M31: 13,907,665 km (0.08 R)
• M32: 15,567,154 km (0.085 R)
• M33: 16,221,944 km (0.097 R)
• M34: 16,486,284 km (0.093 R)
• M35: 17,625,920 km (0.11 R)
• M36: 18,652,311 km (0.096 R)
• M37: 19,487,217 km (0.105 R)
• M38: 20,192,421 km (0.106 R)
• M39: 21,265,637 km (0.097 R)
• M40: 21,337,892 km (0.103 R)
• M41: 22,872,916 km (0.098 R)
• M42: 24,974,467 km (0.099 R)
• M43: 25,356,091 km (0.117 R)
• M44: 25,662,916 km (0.053 R)
• M45: 25,816,703 km (0.043 R)
• M46: 26,980,275 km (0.025 R)
• M47: 27,765,365 km (0.099 R)
• M48: 28,002,477 km (0.114 R)
• M49: 28,558,084 km (0.115 R)
• M50: 29,277,799 km (0.083 R)
• M51: 30,409,208 km (0.066 R)
• M52: 30,980,223 km (0.087 R)
• M53: 31,884,692 km (0.066 R)
• M54: 32,964,788 km (0.075 R)
• M55: 33,551,362 km (0.071 R)
• M56: 34,056,853 km (0.102 R)
• M57: 36,448,773 km (0.117 R)
• M58: 37,490,423 km (0.064 R)
• M59: 37,927,249 km (0.118 R)
• M60: 38,190,242 km (0.101 R)
• M61: 39,248,049 km (0.094 R)
• M62: 42,478,764 km (0.061 R)
• M63: 42,660,825 km (0.096 R)
• M64: 43,666,272 km (0.106 R)
• M65: 44,494,745 km (0.084 R)
• M66: 47,576,461 km (0.114 R)
• M67: 47,860,099 km (0.04 R)
• M68: 48,333,875 km (0.07 R)
• M69: 48,619,009 km (0.079 R)
• M70: 52,082,947 km (0.071 R)
• M71: 52,375,112 km (0.072 R)
• M72: 53,059,223 km (0.105 R)
• M73: 53,844,462 km (0.061 R)
• M74: 53,942,898 km (0.096 R)
• M75: 54,435,972 km (0.083 R)
• M76: 56,023,954 km (0.064 R)
• M77: 57,024,016 km (0.109 R)
• M78: 58,535,253 km (0.099 R)
• M79: 59,448,399 km (0.111 R)
• M80: 61,185,828 km (0.056 R)
• M81: 61,288,602 km (0.12 R)
• M82: 61,906,142 km (0.106 R)
• M83: 62,009,215 km (0.099 R)
• M84: 63,354,997 km (0.084 R)
• M85: 64,501,366 km (0.112 R)
• M86: 64,710,504 km (0.057 R)
• M87: 65,759,634 km (0.114 R)
• M88: 66,286,218 km (0.114 R)
• M89: 68,833,720 km (0.103 R)
• M90: 69,475,495 km (0.081 R)
• M91: 70,226,925 km (0.087 R)
• M92: 70,442,047 km (0.111 R)
• M93: 71,088,759 km (0.095 R)
• M94: 71,412,937 km (0.086 R)
• M95: 71,845,873 km (0.113 R)
• M96: 72,388,315 km (0.03 R)

Planet 6 - Ice Giant

Semi-Major Axis: 17.82 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 872.6

Radius: 6.7

Gravity: 19.44 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 13.53 AU - 22.11 AU

Year: 27614 Days

Day: 15.1 Hours

Environment

Temp: -204 °C

Axial Tilt: 171.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (93)

Outer Limit: 102,273,818 km

• M1: 92,451 km (0.098 R)
• M2: 143,165 km (0.042 R)
• M3: 234,719 km (0.119 R)
• M4: 372,349 km (0.079 R)
• M5: 562,189 km (0.066 R)
• M6: 668,254 km (0.025 R)
• M7: 900,878 km (0.1 R)
• M8: 994,527 km (0.098 R)
• M9: 1,295,069 km (0.085 R)
• M10: 1,473,988 km (0.107 R)
• M11: 1,895,405 km (0.108 R)
• M12: 2,140,446 km (0.119 R)
• M13: 3,170,577 km (0.116 R)
• M14: 3,913,630 km (0.09 R)
• M15: 4,068,613 km (0.092 R)
• M16: 4,708,443 km (0.099 R)
• M17: 4,818,099 km (0.086 R)
• M18: 5,208,549 km (0.107 R)
• M19: 5,842,844 km (0.106 R)
• M20: 6,746,565 km (0.046 R)
• M21: 7,372,931 km (0.067 R)
• M22: 8,346,963 km (0.09 R)
• M23: 8,479,955 km (0.076 R)
• M24: 8,950,740 km (0.104 R)
• M25: 9,568,429 km (0.111 R)
• M26: 9,777,418 km (0.09 R)
• M27: 9,917,591 km (0.11 R)
• M28: 10,342,000 km (0.062 R)
• M29: 10,484,866 km (0.119 R)
• M30: 11,062,613 km (0.083 R)
• M31: 11,428,978 km (0.095 R)
• M32: 13,010,676 km (0.056 R)
• M33: 14,499,923 km (0.096 R)
• M34: 14,659,843 km (0.095 R)
• M35: 15,305,209 km (0.07 R)
• M36: 16,207,733 km (0.078 R)
• M37: 16,290,610 km (0.111 R)
• M38: 17,721,513 km (0.036 R)
• M39: 18,149,962 km (0.096 R)
• M40: 18,495,084 km (0.086 R)
• M41: 18,668,617 km (0.108 R)
• M42: 19,017,031 km (0.042 R)
• M43: 21,789,678 km (0.047 R)
• M44: 23,644,243 km (0.1 R)
• M45: 27,206,168 km (0.066 R)
• M46: 29,099,179 km (0.059 R)
• M47: 29,401,966 km (0.104 R)
• M48: 32,695,961 km (0.103 R)
• M49: 33,537,599 km (0.108 R)
• M50: 35,241,967 km (0.111 R)
• M51: 35,888,380 km (0.067 R)
• M52: 38,623,777 km (0.11 R)
• M53: 39,736,486 km (0.078 R)
• M54: 40,521,725 km (0.097 R)
• M55: 42,793,219 km (0.108 R)
• M56: 43,252,484 km (0.105 R)
• M57: 43,713,246 km (0.114 R)
• M58: 43,828,735 km (0.115 R)
• M59: 44,523,767 km (0.094 R)
• M60: 45,807,317 km (0.098 R)
• M61: 47,695,990 km (0.093 R)
• M62: 49,609,945 km (0.11 R)
• M63: 51,915,099 km (0.045 R)
• M64: 52,159,841 km (0.027 R)
• M65: 52,650,372 km (0.093 R)
• M66: 54,503,291 km (0.104 R)
• M67: 55,250,533 km (0.111 R)
• M68: 56,503,265 km (0.071 R)
• M69: 61,219,488 km (0.076 R)
• M70: 61,736,797 km (0.057 R)
• M71: 63,297,701 km (0.117 R)
• M72: 67,122,919 km (0.062 R)
• M73: 68,593,316 km (0.103 R)
• M74: 68,727,506 km (0.091 R)
• M75: 70,074,335 km (0.118 R)
• M76: 71,429,842 km (0.1 R)
• M77: 71,701,960 km (0.12 R)
• M78: 72,930,907 km (0.07 R)
• M79: 74,580,223 km (0.051 R)
• M80: 76,241,807 km (0.097 R)
• M81: 76,519,909 km (0.084 R)
• M82: 77,216,736 km (0.089 R)
• M83: 77,496,035 km (0.12 R)
• M84: 82,010,301 km (0.088 R)
• M85: 83,295,197 km (0.071 R)
• M86: 84,730,738 km (0.108 R)
• M87: 86,754,049 km (0.068 R)
• M88: 90,848,393 km (0.097 R)
• M89: 90,995,747 km (0.101 R)
• M90: 92,177,720 km (0.115 R)
• M91: 94,706,074 km (0.088 R)
• M92: 98,163,131 km (0.098 R)
• M93: 99,527,164 km (0.115 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 509 - 14,304 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit