🌌 Stone's Star System Generator

Planet 1 - Gas Giant

Semi-Major Axis: 1.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 221.8

Radius: 12.7

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 1.71 AU - 1.89 AU

Year: 1535 Days

Day: 10.5 Hours

Environment

Temp: -192 °C

Axial Tilt: 36.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (52)

Outer Limit: 40,111,922 km

• M1: 184,155 km (0.114 R)
• M2: 277,654 km (0.081 R)
• M3: 367,861 km (0.06 R)
• M4: 473,627 km (0.117 R)
• M5: 582,983 km (0.073 R)
• M6: 854,802 km (0.071 R)
• M7: 975,528 km (0.065 R)
• M8: 1,108,969 km (0.119 R)
• M9: 1,283,400 km (0.068 R)
• M10: 1,467,106 km (0.068 R)
• M11: 1,614,759 km (0.1 R)
• M12: 1,736,532 km (0.105 R)
• M13: 1,885,232 km (0.069 R)
• M14: 1,989,652 km (0.111 R)
• M15: 2,096,016 km (0.061 R)
• M16: 2,204,325 km (0.078 R)
• M17: 2,331,782 km (0.117 R)
• M18: 2,558,722 km (0.072 R)
• M19: 2,647,882 km (0.054 R)
• M20: 3,025,019 km (0.11 R)
• M21: 3,110,140 km (0.03 R)
• M22: 3,205,583 km (0.072 R)
• M23: 3,448,829 km (0.077 R)
• M24: 3,537,840 km (0.091 R)
• M25: 3,718,405 km (0.049 R)
• M26: 3,995,011 km (0.05 R)
• M27: 4,172,584 km (0.088 R)
• M28: 4,546,728 km (0.099 R)
• M29: 4,776,361 km (0.043 R)
• M30: 4,898,283 km (0.083 R)
• M31: 5,179,078 km (0.112 R)
• M32: 5,721,670 km (0.072 R)
• M33: 5,815,767 km (0.034 R)
• M34: 6,005,607 km (0.079 R)
• M35: 6,137,402 km (0.087 R)
• M36: 6,452,755 km (0.096 R)
• M37: 7,137,314 km (0.04 R)
• M38: 7,289,755 km (0.104 R)
• M39: 7,391,930 km (0.081 R)
• M40: 7,546,315 km (0.084 R)
• M41: 7,688,583 km (0.044 R)
• M42: 7,792,703 km (0.041 R)
• M43: 7,897,272 km (0.114 R)
• M44: 8,015,604 km (0.096 R)
• M45: 8,107,905 km (0.088 R)
• M46: 8,253,763 km (0.084 R)
• M47: 8,373,741 km (0.031 R)
• M48: 8,481,002 km (0.026 R)
• M49: 8,710,186 km (0.09 R)
• M50: 9,174,837 km (0.09 R)
• M51: 9,326,978 km (0.091 R)
• M52: 9,424,217 km (0.072 R)

Planet 2 - Gas Giant

Semi-Major Axis: 2.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 835.7

Radius: 9.3

Gravity: 9.66 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 2.14 AU - 3.22 AU

Year: 2790 Days

Day: 13.4 Hours

Environment

Temp: -199 °C

Axial Tilt: 18.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (80)

Outer Limit: 40,111,922 km

• M1: 186,698 km (0.078 R)
• M2: 283,189 km (0.054 R)
• M3: 492,925 km (0.093 R)
• M4: 824,284 km (0.099 R)
• M5: 974,929 km (0.071 R)
• M6: 1,076,955 km (0.111 R)
• M7: 1,135,149 km (0.112 R)
• M8: 1,762,861 km (0.028 R)
• M9: 1,902,885 km (0.115 R)
• M10: 2,179,043 km (0.116 R)
• M11: 2,329,538 km (0.098 R)
• M12: 2,609,286 km (0.052 R)
• M13: 2,673,015 km (0.084 R)
• M14: 2,753,349 km (0.1 R)
• M15: 3,015,893 km (0.105 R)
• M16: 3,235,204 km (0.118 R)
• M17: 3,355,630 km (0.034 R)
• M18: 3,583,019 km (0.102 R)
• M19: 3,942,801 km (0.044 R)
• M20: 4,071,456 km (0.066 R)
• M21: 4,370,801 km (0.039 R)
• M22: 4,465,945 km (0.085 R)
• M23: 4,696,924 km (0.073 R)
• M24: 4,774,715 km (0.082 R)
• M25: 4,971,287 km (0.083 R)
• M26: 5,090,516 km (0.098 R)
• M27: 5,150,505 km (0.114 R)
• M28: 5,453,890 km (0.053 R)
• M29: 6,163,283 km (0.098 R)
• M30: 6,227,311 km (0.092 R)
• M31: 6,879,557 km (0.116 R)
• M32: 7,326,406 km (0.111 R)
• M33: 7,874,982 km (0.095 R)
• M34: 8,154,281 km (0.089 R)
• M35: 8,271,715 km (0.103 R)
• M36: 8,508,080 km (0.076 R)
• M37: 8,939,221 km (0.078 R)
• M38: 9,108,865 km (0.099 R)
• M39: 9,279,556 km (0.063 R)
• M40: 9,525,196 km (0.111 R)
• M41: 9,723,263 km (0.116 R)
• M42: 9,947,810 km (0.045 R)
• M43: 10,022,908 km (0.08 R)
• M44: 10,148,720 km (0.081 R)
• M45: 10,503,715 km (0.073 R)
• M46: 10,759,827 km (0.108 R)
• M47: 11,173,764 km (0.114 R)
• M48: 11,593,087 km (0.104 R)
• M49: 12,419,914 km (0.097 R)
• M50: 12,799,743 km (0.1 R)
• M51: 12,908,800 km (0.044 R)
• M52: 13,265,890 km (0.119 R)
• M53: 13,348,768 km (0.114 R)
• M54: 13,487,146 km (0.075 R)
• M55: 13,598,297 km (0.117 R)
• M56: 13,681,922 km (0.074 R)
• M57: 13,849,472 km (0.108 R)
• M58: 14,017,769 km (0.114 R)
• M59: 14,186,665 km (0.064 R)
• M60: 14,271,487 km (0.078 R)
• M61: 14,469,854 km (0.051 R)
• M62: 14,555,125 km (0.088 R)
• M63: 14,869,280 km (0.069 R)
• M64: 14,955,449 km (0.09 R)
• M65: 15,330,341 km (0.037 R)
• M66: 15,533,495 km (0.112 R)
• M67: 15,854,682 km (0.115 R)
• M68: 17,311,466 km (0.104 R)
• M69: 17,705,207 km (0.044 R)
• M70: 17,826,830 km (0.108 R)
• M71: 18,193,794 km (0.112 R)
• M72: 18,378,098 km (0.117 R)
• M73: 18,655,752 km (0.113 R)
• M74: 18,966,018 km (0.052 R)
• M75: 19,403,143 km (0.078 R)
• M76: 20,033,399 km (0.102 R)
• M77: 20,510,616 km (0.103 R)
• M78: 20,991,424 km (0.062 R)
• M79: 21,378,882 km (0.091 R)
• M80: 21,638,434 km (0.101 R)

Planet 3 - Gas Giant

Semi-Major Axis: 3.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 462.6

Radius: 9.9

Gravity: 4.72 G

Time & Orbit

Eccentricity (e): 0.084

Orbit Range: 3.18 AU - 3.76 AU

Year: 4110 Days

Day: 13.4 Hours

Environment

Temp: -215 °C

Axial Tilt: 36.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (77)

Outer Limit: 40,111,922 km

• M1: 133,890 km (0.052 R)
• M2: 198,516 km (0.048 R)
• M3: 437,723 km (0.108 R)
• M4: 955,182 km (0.099 R)
• M5: 1,244,654 km (0.102 R)
• M6: 1,360,443 km (0.118 R)
• M7: 1,687,015 km (0.106 R)
• M8: 1,859,651 km (0.113 R)
• M9: 2,129,526 km (0.095 R)
• M10: 2,191,310 km (0.086 R)
• M11: 2,978,942 km (0.118 R)
• M12: 3,048,356 km (0.105 R)
• M13: 3,153,374 km (0.079 R)
• M14: 3,313,294 km (0.099 R)
• M15: 3,530,809 km (0.079 R)
• M16: 4,191,732 km (0.1 R)
• M17: 4,466,843 km (0.057 R)
• M18: 4,566,475 km (0.118 R)
• M19: 4,727,592 km (0.097 R)
• M20: 4,972,783 km (0.086 R)
• M21: 5,055,510 km (0.12 R)
• M22: 5,117,743 km (0.102 R)
• M23: 5,518,366 km (0.075 R)
• M24: 5,582,544 km (0.104 R)
• M25: 5,863,638 km (0.089 R)
• M26: 5,994,835 km (0.112 R)
• M27: 6,964,230 km (0.06 R)
• M28: 7,149,881 km (0.11 R)
• M29: 7,243,379 km (0.061 R)
• M30: 7,337,327 km (0.115 R)
• M31: 7,669,135 km (0.047 R)
• M32: 8,372,095 km (0.051 R)
• M33: 8,619,381 km (0.094 R)
• M34: 9,045,136 km (0.106 R)
• M35: 9,426,611 km (0.112 R)
• M36: 9,917,292 km (0.059 R)
• M37: 10,549,043 km (0.045 R)
• M38: 11,521,130 km (0.084 R)
• M39: 11,934,469 km (0.091 R)
• M40: 12,662,712 km (0.079 R)
• M41: 13,607,572 km (0.061 R)
• M42: 13,694,638 km (0.088 R)
• M43: 13,927,562 km (0.088 R)
• M44: 14,015,376 km (0.09 R)
• M45: 14,220,624 km (0.097 R)
• M46: 15,112,078 km (0.12 R)
• M47: 15,262,424 km (0.06 R)
• M48: 15,655,716 km (0.083 R)
• M49: 15,746,971 km (0.119 R)
• M50: 15,838,375 km (0.093 R)
• M51: 16,174,971 km (0.088 R)
• M52: 16,297,940 km (0.083 R)
• M53: 16,606,860 km (0.095 R)
• M54: 17,167,702 km (0.079 R)
• M55: 17,450,442 km (0.118 R)
• M56: 17,544,988 km (0.053 R)
• M57: 17,608,268 km (0.107 R)
• M58: 18,307,937 km (0.096 R)
• M59: 18,758,077 km (0.108 R)
• M60: 19,114,270 km (0.069 R)
• M61: 19,179,195 km (0.078 R)
• M62: 19,538,080 km (0.084 R)
• M63: 19,701,890 km (0.105 R)
• M64: 19,866,148 km (0.04 R)
• M65: 20,063,917 km (0.066 R)
• M66: 20,130,039 km (0.032 R)
• M67: 20,229,222 km (0.052 R)
• M68: 20,694,472 km (0.102 R)
• M69: 20,894,933 km (0.117 R)
• M70: 21,129,652 km (0.103 R)
• M71: 21,297,800 km (0.068 R)
• M72: 21,500,206 km (0.084 R)
• M73: 21,703,360 km (0.047 R)
• M74: 22,213,788 km (0.114 R)
• M75: 22,316,262 km (0.116 R)
• M76: 22,693,698 km (0.099 R)
• M77: 23,038,670 km (0.115 R)

Planet 4 - Gas Giant

Semi-Major Axis: 4.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 389.6

Radius: 14.9

Gravity: 1.75 G

Time & Orbit

Eccentricity (e): 0.16

Orbit Range: 4.06 AU - 5.6 AU

Year: 6749 Days

Day: 11.2 Hours

Environment

Temp: -221 °C

Axial Tilt: 34.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (72)

Outer Limit: 40,111,922 km

• M1: 241,152 km (0.056 R)
• M2: 367,412 km (0.066 R)
• M3: 465,549 km (0.057 R)
• M4: 566,378 km (0.099 R)
• M5: 747,840 km (0.101 R)
• M6: 898,485 km (0.1 R)
• M7: 991,684 km (0.113 R)
• M8: 1,145,770 km (0.103 R)
• M9: 1,278,314 km (0.082 R)
• M10: 1,432,100 km (0.059 R)
• M11: 1,543,700 km (0.06 R)
• M12: 2,485,419 km (0.112 R)
• M13: 3,255,399 km (0.116 R)
• M14: 3,535,446 km (0.052 R)
• M15: 3,711,673 km (0.104 R)
• M16: 5,301,150 km (0.119 R)
• M17: 5,606,031 km (0.088 R)
• M18: 5,890,566 km (0.106 R)
• M19: 6,153,559 km (0.11 R)
• M20: 6,555,229 km (0.103 R)
• M21: 6,718,291 km (0.073 R)
• M22: 6,937,900 km (0.09 R)
• M23: 7,104,104 km (0.08 R)
• M24: 7,725,234 km (0.082 R)
• M25: 8,217,112 km (0.092 R)
• M26: 8,334,397 km (0.095 R)
• M27: 8,659,772 km (0.105 R)
• M28: 9,292,571 km (0.084 R)
• M29: 9,506,795 km (0.11 R)
• M30: 9,691,848 km (0.109 R)
• M31: 9,846,981 km (0.074 R)
• M32: 10,065,394 km (0.112 R)
• M33: 10,285,602 km (0.068 R)
• M34: 11,771,707 km (0.109 R)
• M35: 12,472,423 km (0.104 R)
• M36: 12,709,087 km (0.107 R)
• M37: 13,497,019 km (0.119 R)
• M38: 14,655,206 km (0.111 R)
• M39: 14,940,788 km (0.097 R)
• M40: 15,590,043 km (0.119 R)
• M41: 15,772,104 km (0.042 R)
• M42: 16,101,518 km (0.098 R)
• M43: 16,507,227 km (0.112 R)
• M44: 16,655,629 km (0.059 R)
• M45: 16,991,177 km (0.066 R)
• M46: 18,240,319 km (0.091 R)
• M47: 18,586,189 km (0.061 R)
• M48: 19,754,698 km (0.103 R)
• M49: 19,912,374 km (0.05 R)
• M50: 20,228,774 km (0.097 R)
• M51: 20,546,968 km (0.09 R)
• M52: 20,826,716 km (0.114 R)
• M53: 21,067,569 km (0.115 R)
• M54: 21,836,203 km (0.086 R)
• M55: 22,080,795 km (0.102 R)
• M56: 22,490,544 km (0.095 R)
• M57: 22,985,563 km (0.077 R)
• M58: 23,400,847 km (0.107 R)
• M59: 23,567,798 km (0.099 R)
• M60: 23,818,674 km (0.075 R)
• M61: 24,365,454 km (0.117 R)
• M62: 24,661,658 km (0.114 R)
• M63: 25,001,694 km (0.102 R)
• M64: 25,214,871 km (0.117 R)
• M65: 25,772,272 km (0.102 R)
• M66: 26,160,479 km (0.113 R)
• M67: 26,724,612 km (0.094 R)
• M68: 27,512,395 km (0.119 R)
• M69: 27,644,490 km (0.102 R)
• M70: 27,997,690 km (0.102 R)
• M71: 28,887,199 km (0.119 R)
• M72: 30,102,682 km (0.056 R)

Planet 5 - Ice Giant

Semi-Major Axis: 6.09 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 430.2

Radius: 3.4

Gravity: 37.21 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 5.07 AU - 7.11 AU

Year: 9556 Days

Day: 22.4 Hours

Environment

Temp: -225 °C

Axial Tilt: 28.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (78)

Outer Limit: 40,111,922 km

• M1: 52,359 km (0.098 R)
• M2: 163,361 km (0.093 R)
• M3: 270,024 km (0.105 R)
• M4: 1,063,042 km (0.097 R)
• M5: 1,134,251 km (0.093 R)
• M6: 1,553,424 km (0.08 R)
• M7: 1,695,991 km (0.1 R)
• M8: 1,950,008 km (0.037 R)
• M9: 2,037,523 km (0.116 R)
• M10: 2,516,984 km (0.067 R)
• M11: 2,540,621 km (0.114 R)
• M12: 2,708,469 km (0.091 R)
• M13: 3,130,934 km (0.083 R)
• M14: 3,310,900 km (0.115 R)
• M15: 4,661,170 km (0.038 R)
• M16: 4,778,156 km (0.083 R)
• M17: 5,134,648 km (0.069 R)
• M18: 5,194,936 km (0.1 R)
• M19: 5,561,450 km (0.091 R)
• M20: 5,810,381 km (0.025 R)
• M21: 5,999,473 km (0.097 R)
• M22: 6,578,866 km (0.117 R)
• M23: 7,041,721 km (0.113 R)
• M24: 7,142,251 km (0.077 R)
• M25: 7,412,724 km (0.081 R)
• M26: 7,790,160 km (0.094 R)
• M27: 9,471,340 km (0.115 R)
• M28: 9,508,291 km (0.119 R)
• M29: 10,600,655 km (0.084 R)
• M30: 10,831,634 km (0.099 R)
• M31: 10,908,976 km (0.08 R)
• M32: 11,181,094 km (0.057 R)
• M33: 11,613,283 km (0.089 R)
• M34: 11,811,500 km (0.037 R)
• M35: 12,696,970 km (0.117 R)
• M36: 12,819,341 km (0.091 R)
• M37: 13,354,303 km (0.115 R)
• M38: 13,770,634 km (0.112 R)
• M39: 14,191,303 km (0.105 R)
• M40: 15,609,191 km (0.095 R)
• M41: 16,091,794 km (0.108 R)
• M42: 17,432,490 km (0.084 R)
• M43: 17,477,818 km (0.116 R)
• M44: 17,978,822 km (0.07 R)
• M45: 18,808,641 km (0.103 R)
• M46: 19,934,515 km (0.119 R)
• M47: 20,171,777 km (0.116 R)
• M48: 21,275,211 km (0.056 R)
• M49: 21,858,642 km (0.102 R)
• M50: 22,349,024 km (0.101 R)
• M51: 22,892,364 km (0.09 R)
• M52: 23,390,225 km (0.113 R)
• M53: 23,841,263 km (0.059 R)
• M54: 24,143,600 km (0.107 R)
• M55: 24,244,729 km (0.084 R)
• M56: 24,904,904 km (0.091 R)
• M57: 26,450,998 km (0.064 R)
• M58: 27,815,929 km (0.07 R)
• M59: 28,827,809 km (0.072 R)
• M60: 29,311,309 km (0.101 R)
• M61: 30,449,749 km (0.057 R)
• M62: 30,668,311 km (0.106 R)
• M63: 30,942,076 km (0.069 R)
• M64: 31,492,297 km (0.055 R)
• M65: 33,443,053 km (0.047 R)
• M66: 33,555,700 km (0.109 R)
• M67: 33,668,497 km (0.08 R)
• M68: 34,632,206 km (0.118 R)
• M69: 34,689,203 km (0.093 R)
• M70: 34,746,200 km (0.069 R)
• M71: 36,296,931 km (0.032 R)
• M72: 37,051,653 km (0.115 R)
• M73: 37,577,040 km (0.112 R)
• M74: 37,987,537 km (0.036 R)
• M75: 38,281,646 km (0.039 R)
• M76: 38,517,413 km (0.115 R)
• M77: 38,635,445 km (0.09 R)
• M78: 38,871,960 km (0.042 R)

Planet 6 - Ice Giant

Semi-Major Axis: 9.96 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 100.5

Radius: 5.1

Gravity: 3.86 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 8.71 AU - 11.21 AU

Year: 19986 Days

Day: 24.4 Hours

Environment

Temp: -240 °C

Axial Tilt: 28 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (77)

Outer Limit: 40,111,922 km

• M1: 109,655 km (0.094 R)
• M2: 185,352 km (0.086 R)
• M3: 696,677 km (0.076 R)
• M4: 886,068 km (0.094 R)
• M5: 1,144,723 km (0.096 R)
• M6: 1,406,669 km (0.057 R)
• M7: 1,584,690 km (0.077 R)
• M8: 1,625,231 km (0.056 R)
• M9: 1,790,986 km (0.119 R)
• M10: 1,940,584 km (0.08 R)
• M11: 2,229,158 km (0.117 R)
• M12: 2,578,618 km (0.1 R)
• M13: 2,626,490 km (0.107 R)
• M14: 2,821,117 km (0.092 R)
• M15: 2,895,317 km (0.097 R)
• M16: 3,198,552 km (0.059 R)
• M17: 3,538,588 km (0.074 R)
• M18: 3,972,571 km (0.079 R)
• M19: 5,009,584 km (0.082 R)
• M20: 5,281,254 km (0.108 R)
• M21: 5,619,794 km (0.032 R)
• M22: 5,713,292 km (0.104 R)
• M23: 6,253,191 km (0.115 R)
• M24: 6,415,056 km (0.109 R)
• M25: 6,480,281 km (0.053 R)
• M26: 6,545,655 km (0.048 R)
• M27: 6,776,185 km (0.104 R)
• M28: 6,842,457 km (0.109 R)
• M29: 7,042,769 km (0.096 R)
• M30: 7,312,942 km (0.106 R)
• M31: 7,898,319 km (0.119 R)
• M32: 8,038,193 km (0.078 R)
• M33: 8,355,939 km (0.111 R)
• M34: 9,296,909 km (0.098 R)
• M35: 10,156,947 km (0.054 R)
• M36: 10,232,943 km (0.07 R)
• M37: 10,500,424 km (0.112 R)
• M38: 11,434,812 km (0.118 R)
• M39: 12,032,157 km (0.094 R)
• M40: 12,762,344 km (0.051 R)
• M41: 16,666,848 km (0.093 R)
• M42: 16,891,395 km (0.027 R)
• M43: 17,479,614 km (0.088 R)
• M44: 17,845,081 km (0.097 R)
• M45: 19,049,793 km (0.061 R)
• M46: 19,899,060 km (0.038 R)
• M47: 21,977,573 km (0.102 R)
• M48: 22,125,226 km (0.098 R)
• M49: 24,377,871 km (0.098 R)
• M50: 24,428,734 km (0.1 R)
• M51: 25,402,317 km (0.086 R)
• M52: 25,660,672 km (0.079 R)
• M53: 25,815,955 km (0.083 R)
• M54: 26,545,245 km (0.112 R)
• M55: 26,597,604 km (0.118 R)
• M56: 28,237,645 km (0.074 R)
• M57: 28,505,126 km (0.12 R)
• M58: 28,934,921 km (0.109 R)
• M59: 29,150,641 km (0.109 R)
• M60: 29,421,114 km (0.06 R)
• M61: 29,855,546 km (0.103 R)
• M62: 30,456,331 km (0.08 R)
• M63: 31,614,219 km (0.091 R)
• M64: 32,786,468 km (0.05 R)
• M65: 33,067,712 km (0.116 R)
• M66: 33,575,896 km (0.081 R)
• M67: 33,689,141 km (0.058 R)
• M68: 34,086,623 km (0.116 R)
• M69: 34,542,747 km (0.097 R)
• M70: 34,657,189 km (0.101 R)
• M71: 35,403,533 km (0.117 R)
• M72: 35,691,958 km (0.101 R)
• M73: 36,213,306 km (0.089 R)
• M74: 36,853,735 km (0.118 R)
• M75: 36,970,571 km (0.049 R)
• M76: 37,615,487 km (0.047 R)
• M77: 39,333,469 km (0.08 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: 386 - 20,002 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit