🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.95

Radius: 0.98

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 0.44 AU - 0.66 AU

Year: 268 Days

Day: 40.4 Hours

Environment

Temp: -124 °C

Axial Tilt: 5.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 207.7

Radius: 14.9

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 0.72 AU - 0.74 AU

Year: 409 Days

Day: 10.2 Hours

Environment

Temp: -132 °C

Axial Tilt: 37.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 31,874,607 km

• M1: 197,918 km (0.118 R)
• M2: 307,274 km (0.083 R)
• M3: 470,186 km (0.12 R)
• M4: 623,823 km (0.101 R)
• M5: 718,668 km (0.088 R)
• M6: 862,581 km (0.067 R)
• M7: 1,017,415 km (0.115 R)
• M8: 1,133,503 km (0.055 R)
• M9: 1,254,378 km (0.035 R)
• M10: 1,487,152 km (0.119 R)
• M11: 1,625,082 km (0.109 R)
• M12: 1,809,087 km (0.12 R)
• M13: 1,905,877 km (0.043 R)
• M14: 2,021,965 km (0.076 R)
• M15: 2,122,794 km (0.068 R)
• M16: 2,362,001 km (0.118 R)
• M17: 2,586,398 km (0.093 R)
• M18: 2,681,991 km (0.066 R)
• M19: 3,051,647 km (0.087 R)
• M20: 3,209,323 km (0.117 R)
• M21: 3,564,917 km (0.088 R)
• M22: 3,671,880 km (0.042 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 683.7

Radius: 9.1

Gravity: 8.26 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 0.9 AU - 1.36 AU

Year: 788 Days

Day: 13 Hours

Environment

Temp: -162 °C

Axial Tilt: 3.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (60)

Outer Limit: 31,874,607 km

• M1: 118,332 km (0.071 R)
• M2: 185,352 km (0.053 R)
• M3: 250,576 km (0.095 R)
• M4: 347,815 km (0.084 R)
• M5: 488,138 km (0.108 R)
• M6: 563,535 km (0.042 R)
• M7: 658,979 km (0.096 R)
• M8: 861,534 km (0.081 R)
• M9: 1,016,218 km (0.026 R)
• M10: 1,147,864 km (0.094 R)
• M11: 1,272,031 km (0.117 R)
• M12: 1,484,609 km (0.102 R)
• M13: 1,541,307 km (0.08 R)
• M14: 1,606,083 km (0.101 R)
• M15: 1,716,037 km (0.115 R)
• M16: 1,805,945 km (0.091 R)
• M17: 1,920,537 km (0.107 R)
• M18: 2,069,238 km (0.103 R)
• M19: 2,133,116 km (0.08 R)
• M20: 2,238,134 km (0.104 R)
• M21: 2,295,430 km (0.114 R)
• M22: 2,361,552 km (0.078 R)
• M23: 2,581,012 km (0.117 R)
• M24: 2,736,893 km (0.087 R)
• M25: 2,807,054 km (0.092 R)
• M26: 2,904,742 km (0.113 R)
• M27: 3,067,056 km (0.03 R)
• M28: 3,140,059 km (0.079 R)
• M29: 3,241,487 km (0.069 R)
• M30: 3,476,206 km (0.116 R)
• M31: 3,542,926 km (0.045 R)
• M32: 3,706,736 km (0.104 R)
• M33: 3,784,826 km (0.095 R)
• M34: 3,982,146 km (0.043 R)
• M35: 4,072,054 km (0.119 R)
• M36: 4,315,300 km (0.094 R)
• M37: 4,573,656 km (0.042 R)
• M38: 4,805,233 km (0.117 R)
• M39: 4,901,125 km (0.105 R)
• M40: 5,105,626 km (0.078 R)
• M41: 5,203,463 km (0.063 R)
• M42: 5,301,898 km (0.058 R)
• M43: 5,378,941 km (0.073 R)
• M44: 5,657,043 km (0.101 R)
• M45: 5,826,239 km (0.12 R)
• M46: 6,181,234 km (0.092 R)
• M47: 6,379,003 km (0.09 R)
• M48: 6,460,982 km (0.096 R)
• M49: 6,625,989 km (0.086 R)
• M50: 6,924,287 km (0.081 R)
• M51: 7,093,333 km (0.078 R)
• M52: 7,227,073 km (0.094 R)
• M53: 7,423,046 km (0.118 R)
• M54: 7,509,364 km (0.09 R)
• M55: 7,945,891 km (0.06 R)
• M56: 8,301,186 km (0.036 R)
• M57: 8,416,376 km (0.088 R)
• M58: 8,506,434 km (0.115 R)
• M59: 8,635,687 km (0.107 R)
• M60: 8,752,523 km (0.09 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 820.5

Radius: 10.8

Gravity: 7.03 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 0.98 AU - 1.36 AU

Year: 830 Days

Day: 8.4 Hours

Environment

Temp: -162 °C

Axial Tilt: 32 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (53)

Outer Limit: 31,874,607 km

• M1: 134,638 km (0.101 R)
• M2: 216,468 km (0.089 R)
• M3: 289,023 km (0.106 R)
• M4: 492,327 km (0.118 R)
• M5: 592,408 km (0.112 R)
• M6: 667,207 km (0.084 R)
• M7: 833,709 km (0.091 R)
• M8: 1,167,611 km (0.106 R)
• M9: 1,335,610 km (0.089 R)
• M10: 1,489,546 km (0.096 R)
• M11: 1,572,573 km (0.114 R)
• M12: 1,978,432 km (0.05 R)
• M13: 2,095,567 km (0.038 R)
• M14: 2,215,096 km (0.055 R)
• M15: 2,310,689 km (0.063 R)
• M16: 2,381,000 km (0.118 R)
• M17: 2,470,010 km (0.07 R)
• M18: 2,578,319 km (0.1 R)
• M19: 2,669,873 km (0.093 R)
• M20: 2,790,599 km (0.096 R)
• M21: 3,018,137 km (0.052 R)
• M22: 3,183,143 km (0.098 R)
• M23: 3,491,764 km (0.062 R)
• M24: 3,675,320 km (0.06 R)
• M25: 3,789,164 km (0.107 R)
• M26: 3,862,318 km (0.105 R)
• M27: 4,170,041 km (0.096 R)
• M28: 4,288,821 km (0.07 R)
• M29: 4,441,860 km (0.109 R)
• M30: 4,934,187 km (0.077 R)
• M31: 5,025,591 km (0.068 R)
• M32: 5,198,676 km (0.054 R)
• M33: 5,303,394 km (0.1 R)
• M34: 5,970,900 km (0.077 R)
• M35: 6,044,053 km (0.106 R)
• M36: 6,117,356 km (0.115 R)
• M37: 6,215,792 km (0.033 R)
• M38: 6,589,337 km (0.086 R)
• M39: 6,715,448 km (0.119 R)
• M40: 6,918,902 km (0.077 R)
• M41: 7,047,256 km (0.064 R)
• M42: 7,163,344 km (0.077 R)
• M43: 7,254,150 km (0.059 R)
• M44: 7,384,450 km (0.04 R)
• M45: 7,713,565 km (0.113 R)
• M46: 8,034,154 km (0.089 R)
• M47: 8,236,859 km (0.113 R)
• M48: 8,386,457 km (0.082 R)
• M49: 8,619,530 km (0.073 R)
• M50: 8,716,170 km (0.084 R)
• M51: 9,176,483 km (0.118 R)
• M52: 9,303,492 km (0.101 R)
• M53: 9,402,525 km (0.097 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 720.1

Radius: 10.3

Gravity: 6.79 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 1.39 AU - 1.61 AU

Year: 1205 Days

Day: 13 Hours

Environment

Temp: -179 °C

Axial Tilt: 48.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (61)

Outer Limit: 31,874,607 km

• M1: 143,614 km (0.119 R)
• M2: 211,831 km (0.055 R)
• M3: 305,329 km (0.081 R)
• M4: 394,340 km (0.12 R)
• M5: 489,035 km (0.108 R)
• M6: 563,086 km (0.113 R)
• M7: 641,775 km (0.103 R)
• M8: 764,146 km (0.111 R)
• M9: 902,225 km (0.112 R)
• M10: 1,156,691 km (0.087 R)
• M11: 1,308,981 km (0.112 R)
• M12: 1,572,124 km (0.067 R)
• M13: 1,642,884 km (0.045 R)
• M14: 1,861,596 km (0.118 R)
• M15: 1,993,691 km (0.086 R)
• M16: 2,277,478 km (0.089 R)
• M17: 2,398,802 km (0.085 R)
• M18: 2,491,104 km (0.097 R)
• M19: 2,743,475 km (0.109 R)
• M20: 2,818,573 km (0.118 R)
• M21: 2,883,649 km (0.117 R)
• M22: 3,159,956 km (0.105 R)
• M23: 3,238,943 km (0.107 R)
• M24: 3,738,451 km (0.115 R)
• M25: 3,846,012 km (0.11 R)
• M26: 3,918,417 km (0.098 R)
• M27: 4,027,773 km (0.1 R)
• M28: 4,125,909 km (0.107 R)
• M29: 4,513,667 km (0.11 R)
• M30: 4,590,111 km (0.102 R)
• M31: 4,847,869 km (0.095 R)
• M32: 4,952,438 km (0.107 R)
• M33: 5,123,877 km (0.12 R)
• M34: 5,216,927 km (0.038 R)
• M35: 5,746,204 km (0.052 R)
• M36: 5,940,382 km (0.081 R)
• M37: 6,136,804 km (0.078 R)
• M38: 6,435,401 km (0.034 R)
• M39: 6,521,570 km (0.118 R)
• M40: 6,811,789 km (0.063 R)
• M41: 6,929,074 km (0.108 R)
• M42: 7,195,358 km (0.116 R)
• M43: 7,419,755 km (0.062 R)
• M44: 7,495,153 km (0.105 R)
• M45: 7,646,695 km (0.101 R)
• M46: 8,091,749 km (0.093 R)
• M47: 8,200,357 km (0.081 R)
• M48: 9,087,472 km (0.1 R)
• M49: 9,200,419 km (0.045 R)
• M50: 9,427,957 km (0.075 R)
• M51: 9,805,692 km (0.072 R)
• M52: 9,871,963 km (0.105 R)
• M53: 9,971,596 km (0.088 R)
• M54: 10,121,642 km (0.084 R)
• M55: 10,205,268 km (0.103 R)
• M56: 10,373,266 km (0.11 R)
• M57: 10,508,353 km (0.103 R)
• M58: 10,712,105 km (0.115 R)
• M59: 11,487,920 km (0.099 R)
• M60: 11,557,782 km (0.106 R)
• M61: 11,732,961 km (0.051 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 511.9

Radius: 9.9

Gravity: 5.22 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 1.52 AU - 2.4 AU

Year: 1800 Days

Day: 11.4 Hours

Environment

Temp: -183 °C

Axial Tilt: 27.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (69)

Outer Limit: 31,874,607 km

• M1: 123,568 km (0.111 R)
• M2: 267,631 km (0.08 R)
• M3: 789,727 km (0.113 R)
• M4: 882,029 km (0.078 R)
• M5: 953,686 km (0.099 R)
• M6: 1,252,433 km (0.116 R)
• M7: 1,464,713 km (0.096 R)
• M8: 1,551,031 km (0.118 R)
• M9: 1,872,217 km (0.117 R)
• M10: 1,976,936 km (0.103 R)
• M11: 2,381,598 km (0.105 R)
• M12: 2,449,665 km (0.1 R)
• M13: 2,518,331 km (0.086 R)
• M14: 2,587,744 km (0.077 R)
• M15: 2,811,991 km (0.091 R)
• M16: 2,884,097 km (0.08 R)
• M17: 3,005,720 km (0.08 R)
• M18: 3,178,955 km (0.119 R)
• M19: 3,241,487 km (0.087 R)
• M20: 3,342,615 km (0.037 R)
• M21: 3,522,282 km (0.101 R)
• M22: 3,587,207 km (0.08 R)
• M23: 4,285,979 km (0.091 R)
• M24: 4,397,130 km (0.096 R)
• M25: 4,708,144 km (0.059 R)
• M26: 4,924,313 km (0.042 R)
• M27: 5,070,171 km (0.068 R)
• M28: 5,262,105 km (0.098 R)
• M29: 5,351,415 km (0.033 R)
• M30: 5,516,571 km (0.043 R)
• M31: 5,622,636 km (0.098 R)
• M32: 5,929,162 km (0.085 R)
• M33: 6,162,834 km (0.104 R)
• M34: 6,304,353 km (0.085 R)
• M35: 6,478,934 km (0.096 R)
• M36: 6,639,004 km (0.102 R)
• M37: 6,768,107 km (0.072 R)
• M38: 6,865,345 km (0.116 R)
• M39: 7,061,468 km (0.116 R)
• M40: 7,209,720 km (0.1 R)
• M41: 7,325,808 km (0.038 R)
• M42: 7,526,119 km (0.088 R)
• M43: 7,711,471 km (0.101 R)
• M44: 7,949,481 km (0.069 R)
• M45: 8,086,513 km (0.082 R)
• M46: 8,224,442 km (0.109 R)
• M47: 8,293,706 km (0.107 R)
• M48: 8,607,712 km (0.116 R)
• M49: 8,713,178 km (0.106 R)
• M50: 8,943,410 km (0.071 R)
• M51: 9,427,807 km (0.079 R)
• M52: 9,554,816 km (0.045 R)
• M53: 9,810,479 km (0.105 R)
• M54: 10,142,736 km (0.057 R)
• M55: 10,254,186 km (0.108 R)
• M56: 10,515,982 km (0.109 R)
• M57: 10,591,230 km (0.105 R)
• M58: 10,875,017 km (0.082 R)
• M59: 11,084,604 km (0.104 R)
• M60: 11,701,994 km (0.115 R)
• M61: 12,073,895 km (0.075 R)
• M62: 12,152,733 km (0.114 R)
• M63: 12,489,627 km (0.1 R)
• M64: 12,609,156 km (0.119 R)
• M65: 13,030,872 km (0.066 R)
• M66: 13,131,851 km (0.072 R)
• M67: 13,416,236 km (0.089 R)
• M68: 13,723,361 km (0.102 R)
• M69: 13,805,490 km (0.081 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 546.4

Radius: 12.7

Gravity: 3.39 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 4.13 AU - 4.93 AU

Year: 6325 Days

Day: 10 Hours

Environment

Temp: -215 °C

Axial Tilt: 23 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (75)

Outer Limit: 31,874,607 km

• M1: 195,524 km (0.112 R)
• M2: 310,715 km (0.086 R)
• M3: 673,340 km (0.085 R)
• M4: 787,633 km (0.073 R)
• M5: 994,377 km (0.109 R)
• M6: 1,298,809 km (0.112 R)
• M7: 1,396,197 km (0.095 R)
• M8: 1,685,818 km (0.066 R)
• M9: 1,828,984 km (0.072 R)
• M10: 2,013,887 km (0.108 R)
• M11: 2,244,118 km (0.096 R)
• M12: 2,503,520 km (0.087 R)
• M13: 2,626,639 km (0.077 R)
• M14: 2,836,376 km (0.114 R)
• M15: 2,943,338 km (0.026 R)
• M16: 3,227,873 km (0.093 R)
• M17: 3,498,645 km (0.063 R)
• M18: 3,730,073 km (0.115 R)
• M19: 3,942,801 km (0.114 R)
• M20: 5,169,803 km (0.086 R)
• M21: 5,460,771 km (0.118 R)
• M22: 5,948,311 km (0.063 R)
• M23: 6,253,341 km (0.085 R)
• M24: 6,936,554 km (0.074 R)
• M25: 7,052,792 km (0.112 R)
• M26: 7,613,634 km (0.095 R)
• M27: 8,097,134 km (0.077 R)
• M28: 8,998,910 km (0.081 R)
• M29: 10,063,598 km (0.056 R)
• M30: 10,261,516 km (0.05 R)
• M31: 11,682,696 km (0.119 R)
• M32: 11,925,643 km (0.028 R)
• M33: 12,451,629 km (0.1 R)
• M34: 13,021,298 km (0.114 R)
• M35: 13,129,008 km (0.029 R)
• M36: 13,309,274 km (0.12 R)
• M37: 13,672,198 km (0.093 R)
• M38: 13,928,160 km (0.108 R)
• M39: 14,296,620 km (0.089 R)
• M40: 15,005,714 km (0.081 R)
• M41: 15,232,055 km (0.12 R)
• M42: 15,726,177 km (0.08 R)
• M43: 16,071,449 km (0.074 R)
• M44: 16,341,772 km (0.067 R)
• M45: 16,808,518 km (0.048 R)
• M46: 17,043,685 km (0.082 R)
• M47: 17,477,370 km (0.106 R)
• M48: 17,675,736 km (0.073 R)
• M49: 17,755,322 km (0.084 R)
• M50: 17,914,794 km (0.117 R)
• M51: 18,396,200 km (0.085 R)
• M52: 18,678,940 km (0.091 R)
• M53: 18,881,794 km (0.055 R)
• M54: 19,412,717 km (0.069 R)
• M55: 20,322,272 km (0.107 R)
• M56: 21,034,657 km (0.097 R)
• M57: 21,584,878 km (0.066 R)
• M58: 21,712,635 km (0.098 R)
• M59: 22,354,709 km (0.097 R)
• M60: 22,483,962 km (0.071 R)
• M61: 22,872,916 km (0.063 R)
• M62: 23,307,797 km (0.119 R)
• M63: 23,921,148 km (0.082 R)
• M64: 24,673,177 km (0.075 R)
• M65: 24,985,088 km (0.087 R)
• M66: 25,388,105 km (0.085 R)
• M67: 25,657,980 km (0.081 R)
• M68: 26,427,661 km (0.08 R)
• M69: 26,655,498 km (0.034 R)
• M70: 27,804,410 km (0.108 R)
• M71: 27,943,386 km (0.082 R)
• M72: 28,595,035 km (0.094 R)
• M73: 29,534,509 km (0.065 R)
• M74: 29,818,296 km (0.025 R)
• M75: 31,202,974 km (0.056 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 346.7

Radius: 14

Gravity: 1.77 G

Time & Orbit

Eccentricity (e): 0.009

Orbit Range: 5.08 AU - 5.18 AU

Year: 7622 Days

Day: 7.1 Hours

Environment

Temp: -214 °C

Axial Tilt: 25.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (74)

Outer Limit: 31,874,607 km

• M1: 182,061 km (0.07 R)
• M2: 277,504 km (0.098 R)
• M3: 851,511 km (0.047 R)
• M4: 1,087,726 km (0.108 R)
• M5: 1,299,258 km (0.064 R)
• M6: 1,491,940 km (0.101 R)
• M7: 1,870,422 km (0.111 R)
• M8: 1,960,779 km (0.106 R)
• M9: 2,696,502 km (0.116 R)
• M10: 2,967,124 km (0.094 R)
• M11: 3,334,387 km (0.112 R)
• M12: 3,716,460 km (0.111 R)
• M13: 4,089,258 km (0.106 R)
• M14: 4,304,230 km (0.088 R)
• M15: 4,498,558 km (0.116 R)
• M16: 4,820,642 km (0.065 R)
• M17: 5,150,355 km (0.084 R)
• M18: 6,020,417 km (0.078 R)
• M19: 6,210,855 km (0.12 R)
• M20: 6,375,861 km (0.043 R)
• M21: 6,681,938 km (0.092 R)
• M22: 7,222,136 km (0.07 R)
• M23: 7,894,878 km (0.084 R)
• M24: 8,073,797 km (0.032 R)
• M25: 8,526,779 km (0.093 R)
• M26: 8,741,153 km (0.107 R)
• M27: 8,833,605 km (0.077 R)
• M28: 8,988,289 km (0.073 R)
• M29: 9,426,311 km (0.09 R)
• M30: 9,743,459 km (0.074 R)
• M31: 9,935,543 km (0.094 R)
• M32: 10,453,750 km (0.075 R)
• M33: 11,381,855 km (0.059 R)
• M34: 11,652,029 km (0.044 R)
• M35: 11,855,930 km (0.101 R)
• M36: 11,992,513 km (0.062 R)
• M37: 12,405,553 km (0.05 R)
• M38: 12,544,380 km (0.1 R)
• M39: 13,139,779 km (0.104 R)
• M40: 13,494,326 km (0.081 R)
• M41: 13,637,043 km (0.096 R)
• M42: 13,816,111 km (0.083 R)
• M43: 13,996,078 km (0.071 R)
• M44: 14,140,440 km (0.098 R)
• M45: 14,576,966 km (0.079 R)
• M46: 15,950,424 km (0.076 R)
• M47: 16,063,670 km (0.091 R)
• M48: 16,863,420 km (0.101 R)
• M49: 17,365,022 km (0.099 R)
• M50: 18,700,183 km (0.104 R)
• M51: 18,899,297 km (0.074 R)
• M52: 19,339,863 km (0.085 R)
• M53: 20,435,668 km (0.12 R)
• M54: 20,723,045 km (0.102 R)
• M55: 20,970,480 km (0.103 R)
• M56: 21,551,518 km (0.105 R)
• M57: 21,760,357 km (0.091 R)
• M58: 21,927,906 km (0.116 R)
• M59: 22,942,180 km (0.092 R)
• M60: 23,369,431 km (0.09 R)
• M61: 23,971,862 km (0.032 R)
• M62: 24,623,062 km (0.106 R)
• M63: 25,456,172 km (0.107 R)
• M64: 26,031,675 km (0.113 R)
• M65: 26,298,707 km (0.108 R)
• M66: 27,330,783 km (0.067 R)
• M67: 27,511,647 km (0.111 R)
• M68: 28,147,737 km (0.1 R)
• M69: 28,238,992 km (0.067 R)
• M70: 29,805,581 km (0.114 R)
• M71: 29,898,630 km (0.092 R)
• M72: 30,131,554 km (0.108 R)
• M73: 30,318,402 km (0.101 R)
• M74: 31,684,530 km (0.094 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 489 - 17,993 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit