🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.37 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 473.2

Radius: 10.3

Gravity: 4.46 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 0.64 AU - 0.84 AU

Year: 418 Days

Day: 15 Hours

Environment

Temp: -137 °C

Axial Tilt: 17.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (43)

Outer Limit: 52,437,908 km

• M1: 141,071 km (0.086 R)
• M2: 210,484 km (0.06 R)
• M3: 319,541 km (0.051 R)
• M4: 414,087 km (0.087 R)
• M5: 479,611 km (0.112 R)
• M6: 552,914 km (0.105 R)
• M7: 648,208 km (0.102 R)
• M8: 716,424 km (0.068 R)
• M9: 798,703 km (0.082 R)
• M10: 864,825 km (0.037 R)
• M11: 945,159 km (0.053 R)
• M12: 1,118,244 km (0.081 R)
• M13: 1,274,424 km (0.104 R)
• M14: 1,395,449 km (0.064 R)
• M15: 1,486,255 km (0.116 R)
• M16: 1,554,621 km (0.028 R)
• M17: 1,628,971 km (0.097 R)
• M18: 1,812,677 km (0.051 R)
• M19: 1,901,838 km (0.071 R)
• M20: 2,057,420 km (0.091 R)
• M21: 2,145,084 km (0.118 R)
• M22: 2,256,534 km (0.084 R)
• M23: 2,375,614 km (0.034 R)
• M24: 2,584,902 km (0.08 R)
• M25: 2,781,922 km (0.103 R)
• M26: 2,885,444 km (0.072 R)
• M27: 2,953,212 km (0.104 R)
• M28: 3,121,509 km (0.087 R)
• M29: 3,222,937 km (0.11 R)
• M30: 3,351,142 km (0.111 R)
• M31: 3,461,545 km (0.055 R)
• M32: 3,773,008 km (0.078 R)
• M33: 3,847,208 km (0.119 R)
• M34: 3,915,126 km (0.118 R)
• M35: 3,983,343 km (0.117 R)
• M36: 4,065,921 km (0.09 R)
• M37: 4,225,691 km (0.039 R)
• M38: 4,408,799 km (0.116 R)
• M39: 4,529,973 km (0.095 R)
• M40: 4,594,599 km (0.057 R)
• M41: 4,688,397 km (0.08 R)
• M42: 4,819,595 km (0.106 R)
• M43: 4,907,558 km (0.098 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 937

Radius: 9

Gravity: 11.57 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 0.69 AU - 0.79 AU

Year: 418 Days

Day: 7 Hours

Environment

Temp: -149 °C

Axial Tilt: 4.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (53)

Outer Limit: 52,437,908 km

• M1: 121,324 km (0.112 R)
• M2: 182,210 km (0.117 R)
• M3: 305,030 km (0.063 R)
• M4: 481,107 km (0.12 R)
• M5: 545,284 km (0.097 R)
• M6: 774,618 km (0.117 R)
• M7: 833,410 km (0.117 R)
• M8: 903,272 km (0.087 R)
• M9: 960,718 km (0.084 R)
• M10: 1,094,608 km (0.119 R)
• M11: 1,177,036 km (0.088 R)
• M12: 1,245,701 km (0.113 R)
• M13: 1,304,793 km (0.101 R)
• M14: 1,414,897 km (0.106 R)
• M15: 1,493,884 km (0.062 R)
• M16: 1,562,699 km (0.064 R)
• M17: 1,638,695 km (0.082 R)
• M18: 1,739,823 km (0.025 R)
• M19: 1,843,046 km (0.101 R)
• M20: 1,904,830 km (0.063 R)
• M21: 2,139,549 km (0.105 R)
• M22: 2,296,776 km (0.107 R)
• M23: 2,356,765 km (0.088 R)
• M24: 2,457,893 km (0.114 R)
• M25: 2,519,378 km (0.037 R)
• M26: 2,608,987 km (0.048 R)
• M27: 2,692,612 km (0.094 R)
• M28: 2,949,172 km (0.09 R)
• M29: 3,073,039 km (0.114 R)
• M30: 3,161,601 km (0.054 R)
• M31: 3,364,007 km (0.037 R)
• M32: 3,532,006 km (0.077 R)
• M33: 3,648,243 km (0.12 R)
• M34: 3,710,775 km (0.064 R)
• M35: 3,789,314 km (0.1 R)
• M36: 3,876,530 km (0.111 R)
• M37: 3,972,422 km (0.082 R)
• M38: 4,077,140 km (0.073 R)
• M39: 4,256,508 km (0.117 R)
• M40: 4,314,103 km (0.107 R)
• M41: 4,505,289 km (0.105 R)
• M42: 4,563,932 km (0.106 R)
• M43: 4,656,832 km (0.098 R)
• M44: 4,741,804 km (0.082 R)
• M45: 4,827,224 km (0.114 R)
• M46: 4,896,039 km (0.047 R)
• M47: 5,422,025 km (0.091 R)
• M48: 5,583,441 km (0.111 R)
• M49: 5,737,378 km (0.034 R)
• M50: 5,901,786 km (0.1 R)
• M51: 6,040,014 km (0.118 R)
• M52: 6,104,940 km (0.08 R)
• M53: 6,338,611 km (0.118 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 643.3

Radius: 10.6

Gravity: 5.73 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 0.72 AU - 0.84 AU

Year: 452 Days

Day: 12.1 Hours

Environment

Temp: -147 °C

Axial Tilt: 18.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (46)

Outer Limit: 52,437,908 km

• M1: 176,675 km (0.085 R)
• M2: 251,474 km (0.1 R)
• M3: 321,486 km (0.111 R)
• M4: 443,408 km (0.114 R)
• M5: 540,048 km (0.098 R)
• M6: 621,729 km (0.106 R)
• M7: 712,385 km (0.085 R)
• M8: 842,386 km (0.117 R)
• M9: 912,846 km (0.091 R)
• M10: 1,022,501 km (0.079 R)
• M11: 1,093,560 km (0.055 R)
• M12: 1,195,885 km (0.074 R)
• M13: 1,311,973 km (0.12 R)
• M14: 1,379,292 km (0.063 R)
• M15: 1,458,430 km (0.116 R)
• M16: 1,588,580 km (0.112 R)
• M17: 1,666,221 km (0.119 R)
• M18: 1,773,932 km (0.045 R)
• M19: 1,866,383 km (0.088 R)
• M20: 1,936,844 km (0.084 R)
• M21: 2,014,186 km (0.084 R)
• M22: 2,172,311 km (0.068 R)
• M23: 2,309,193 km (0.039 R)
• M24: 2,397,904 km (0.12 R)
• M25: 2,526,708 km (0.102 R)
• M26: 2,624,695 km (0.067 R)
• M27: 2,690,817 km (0.099 R)
• M28: 2,784,465 km (0.106 R)
• M29: 2,858,666 km (0.094 R)
• M30: 3,247,171 km (0.053 R)
• M31: 3,375,676 km (0.074 R)
• M32: 3,601,120 km (0.115 R)
• M33: 3,786,472 km (0.11 R)
• M34: 3,869,050 km (0.088 R)
• M35: 3,959,856 km (0.091 R)
• M36: 4,059,039 km (0.059 R)
• M37: 4,166,749 km (0.076 R)
• M38: 4,275,358 km (0.081 R)
• M39: 4,424,507 km (0.033 R)
• M40: 4,527,430 km (0.079 R)
• M41: 4,816,902 km (0.062 R)
• M42: 4,914,739 km (0.109 R)
• M43: 5,120,586 km (0.119 R)
• M44: 5,396,893 km (0.1 R)
• M45: 5,498,619 km (0.086 R)
• M46: 5,643,729 km (0.118 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.24 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 801.4

Radius: 13

Gravity: 4.74 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 1.21 AU - 1.27 AU

Year: 906 Days

Day: 6.2 Hours

Environment

Temp: -165 °C

Axial Tilt: 11.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (59)

Outer Limit: 52,437,908 km

• M1: 166,353 km (0.117 R)
• M2: 251,025 km (0.107 R)
• M3: 355,295 km (0.068 R)
• M4: 488,287 km (0.09 R)
• M5: 653,443 km (0.097 R)
• M6: 914,492 km (0.109 R)
• M7: 1,038,209 km (0.113 R)
• M8: 1,126,472 km (0.08 R)
• M9: 1,210,247 km (0.045 R)
• M10: 1,355,207 km (0.101 R)
• M11: 1,437,486 km (0.054 R)
• M12: 1,529,339 km (0.08 R)
• M13: 1,615,358 km (0.114 R)
• M14: 1,727,257 km (0.062 R)
• M15: 1,883,736 km (0.082 R)
• M16: 2,122,943 km (0.081 R)
• M17: 2,282,265 km (0.114 R)
• M18: 2,372,473 km (0.115 R)
• M19: 2,575,327 km (0.047 R)
• M20: 2,688,423 km (0.1 R)
• M21: 2,851,635 km (0.111 R)
• M22: 2,968,770 km (0.104 R)
• M23: 3,299,680 km (0.111 R)
• M24: 3,474,859 km (0.119 R)
• M25: 3,568,807 km (0.115 R)
• M26: 3,663,652 km (0.073 R)
• M27: 3,834,493 km (0.065 R)
• M28: 3,975,264 km (0.101 R)
• M29: 4,161,962 km (0.069 R)
• M30: 4,250,973 km (0.081 R)
• M31: 4,363,022 km (0.099 R)
• M32: 4,464,599 km (0.039 R)
• M33: 4,578,592 km (0.068 R)
• M34: 4,705,003 km (0.085 R)
• M35: 5,008,686 km (0.07 R)
• M36: 5,222,611 km (0.116 R)
• M37: 5,403,325 km (0.108 R)
• M38: 5,598,401 km (0.112 R)
• M39: 5,870,370 km (0.103 R)
• M40: 6,108,829 km (0.111 R)
• M41: 6,337,714 km (0.112 R)
• M42: 6,569,441 km (0.1 R)
• M43: 6,751,651 km (0.063 R)
• M44: 7,054,587 km (0.102 R)
• M45: 7,241,285 km (0.111 R)
• M46: 7,362,160 km (0.105 R)
• M47: 7,551,551 km (0.085 R)
• M48: 7,674,072 km (0.056 R)
• M49: 7,948,883 km (0.107 R)
• M50: 8,032,059 km (0.07 R)
• M51: 8,269,022 km (0.09 R)
• M52: 8,353,246 km (0.061 R)
• M53: 8,721,406 km (0.06 R)
• M54: 9,037,207 km (0.098 R)
• M55: 9,240,212 km (0.117 R)
• M56: 9,356,748 km (0.072 R)
• M57: 9,473,884 km (0.092 R)
• M58: 9,576,807 km (0.105 R)
• M59: 9,947,361 km (0.028 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 986.9

Radius: 8.8

Gravity: 12.74 G

Time & Orbit

Eccentricity (e): 0.013

Orbit Range: 1.46 AU - 1.5 AU

Year: 1181 Days

Day: 8.5 Hours

Environment

Temp: -170 °C

Axial Tilt: 9.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (68)

Outer Limit: 52,437,908 km

• M1: 133,142 km (0.064 R)
• M2: 224,696 km (0.074 R)
• M3: 308,920 km (0.069 R)
• M4: 380,128 km (0.069 R)
• M5: 441,015 km (0.065 R)
• M6: 568,173 km (0.082 R)
• M7: 715,227 km (0.083 R)
• M8: 786,436 km (0.092 R)
• M9: 875,297 km (0.032 R)
• M10: 967,749 km (0.086 R)
• M11: 1,104,631 km (0.117 R)
• M12: 1,196,633 km (0.05 R)
• M13: 1,282,652 km (0.105 R)
• M14: 1,344,137 km (0.086 R)
• M15: 1,461,122 km (0.077 R)
• M16: 1,534,874 km (0.113 R)
• M17: 1,734,587 km (0.117 R)
• M18: 1,922,482 km (0.062 R)
• M19: 2,232,898 km (0.106 R)
• M20: 2,383,244 km (0.117 R)
• M21: 2,537,030 km (0.114 R)
• M22: 2,626,340 km (0.091 R)
• M23: 2,728,216 km (0.07 R)
• M24: 2,900,852 km (0.089 R)
• M25: 3,160,554 km (0.078 R)
• M26: 3,378,818 km (0.109 R)
• M27: 3,514,503 km (0.047 R)
• M28: 3,601,868 km (0.119 R)
• M29: 3,664,699 km (0.116 R)
• M30: 3,817,139 km (0.069 R)
• M31: 3,919,913 km (0.085 R)
• M32: 4,036,599 km (0.097 R)
• M33: 4,233,620 km (0.032 R)
• M34: 4,353,448 km (0.07 R)
• M35: 4,420,467 km (0.118 R)
• M36: 4,747,189 km (0.055 R)
• M37: 4,871,655 km (0.082 R)
• M38: 5,194,936 km (0.065 R)
• M39: 5,308,929 km (0.074 R)
• M40: 5,366,225 km (0.075 R)
• M41: 5,951,153 km (0.083 R)
• M42: 6,130,521 km (0.109 R)
• M43: 6,281,465 km (0.111 R)
• M44: 6,387,829 km (0.12 R)
• M45: 6,464,124 km (0.075 R)
• M46: 6,866,093 km (0.08 R)
• M47: 6,960,041 km (0.088 R)
• M48: 7,180,847 km (0.092 R)
• M49: 7,404,047 km (0.119 R)
• M50: 7,468,075 km (0.101 R)
• M51: 7,597,029 km (0.074 R)
• M52: 8,302,532 km (0.103 R)
• M53: 8,654,835 km (0.05 R)
• M54: 8,977,667 km (0.091 R)
• M55: 9,046,183 km (0.037 R)
• M56: 9,565,288 km (0.031 R)
• M57: 9,635,300 km (0.052 R)
• M58: 9,775,622 km (0.106 R)
• M59: 10,111,918 km (0.055 R)
• M60: 10,254,635 km (0.059 R)
• M61: 10,596,316 km (0.11 R)
• M62: 10,959,989 km (0.03 R)
• M63: 11,143,396 km (0.034 R)
• M64: 11,309,300 km (0.108 R)
• M65: 11,737,000 km (0.028 R)
• M66: 11,811,949 km (0.028 R)
• M67: 12,226,933 km (0.107 R)
• M68: 12,897,132 km (0.032 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 243.6

Radius: 13.4

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.069

Orbit Range: 3.05 AU - 3.51 AU

Year: 3897 Days

Day: 11.9 Hours

Environment

Temp: -211 °C

Axial Tilt: 7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (64)

Outer Limit: 52,437,908 km

• M1: 167,250 km (0.054 R)
• M2: 255,364 km (0.076 R)
• M3: 373,396 km (0.101 R)
• M4: 499,058 km (0.107 R)
• M5: 659,427 km (0.088 R)
• M6: 794,963 km (0.11 R)
• M7: 903,571 km (0.027 R)
• M8: 1,178,382 km (0.067 R)
• M9: 1,712,447 km (0.088 R)
• M10: 1,968,708 km (0.08 R)
• M11: 2,185,625 km (0.107 R)
• M12: 2,303,658 km (0.097 R)
• M13: 2,587,894 km (0.116 R)
• M14: 2,783,717 km (0.086 R)
• M15: 2,926,733 km (0.089 R)
• M16: 3,385,699 km (0.108 R)
• M17: 3,694,170 km (0.097 R)
• M18: 3,835,989 km (0.089 R)
• M19: 4,011,916 km (0.062 R)
• M20: 4,174,080 km (0.108 R)
• M21: 4,862,080 km (0.077 R)
• M22: 4,948,548 km (0.104 R)
• M23: 5,694,293 km (0.119 R)
• M24: 5,858,851 km (0.094 R)
• M25: 6,136,355 km (0.114 R)
• M26: 6,437,346 km (0.066 R)
• M27: 6,723,975 km (0.098 R)
• M28: 6,975,749 km (0.115 R)
• M29: 7,191,319 km (0.062 R)
• M30: 7,349,444 km (0.084 R)
• M31: 7,468,823 km (0.07 R)
• M32: 7,952,922 km (0.099 R)
• M33: 8,075,443 km (0.102 R)
• M34: 8,219,356 km (0.084 R)
• M35: 8,364,017 km (0.057 R)
• M36: 8,972,731 km (0.08 R)
• M37: 9,508,889 km (0.115 R)
• M38: 9,660,881 km (0.107 R)
• M39: 9,835,611 km (0.07 R)
• M40: 10,077,661 km (0.119 R)
• M41: 10,725,120 km (0.07 R)
• M42: 11,065,306 km (0.079 R)
• M43: 11,225,375 km (0.117 R)
• M44: 11,432,120 km (0.092 R)
• M45: 11,524,571 km (0.046 R)
• M46: 11,686,735 km (0.093 R)
• M47: 11,989,970 km (0.086 R)
• M48: 12,130,891 km (0.107 R)
• M49: 12,272,261 km (0.096 R)
• M50: 12,628,155 km (0.098 R)
• M51: 12,723,598 km (0.073 R)
• M52: 12,867,362 km (0.102 R)
• M53: 13,132,150 km (0.119 R)
• M54: 13,301,644 km (0.101 R)
• M55: 13,839,000 km (0.099 R)
• M56: 13,937,585 km (0.086 R)
• M57: 14,036,319 km (0.092 R)
• M58: 14,135,204 km (0.071 R)
• M59: 14,658,497 km (0.071 R)
• M60: 15,672,920 km (0.098 R)
• M61: 16,266,375 km (0.033 R)
• M62: 16,396,525 km (0.09 R)
• M63: 16,972,626 km (0.118 R)
• M64: 17,956,681 km (0.075 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.82 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 435.8

Radius: 6.3

Gravity: 10.98 G

Time & Orbit

Eccentricity (e): 0.169

Orbit Range: 6.5 AU - 9.14 AU

Year: 14346 Days

Day: 23.9 Hours

Environment

Temp: -231 °C

Axial Tilt: 26.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (91)

Outer Limit: 52,437,908 km

• M1: 102,624 km (0.037 R)
• M2: 165,156 km (0.045 R)
• M3: 249,230 km (0.064 R)
• M4: 336,894 km (0.111 R)
• M5: 809,773 km (0.086 R)
• M6: 926,160 km (0.079 R)
• M7: 1,307,785 km (0.112 R)
• M8: 1,492,089 km (0.081 R)
• M9: 1,783,955 km (0.039 R)
• M10: 1,936,694 km (0.108 R)
• M11: 3,150,681 km (0.085 R)
• M12: 3,813,399 km (0.067 R)
• M13: 4,691,389 km (0.085 R)
• M14: 5,189,251 km (0.117 R)
• M15: 5,666,468 km (0.077 R)
• M16: 6,662,640 km (0.105 R)
• M17: 6,701,985 km (0.084 R)
• M18: 7,342,712 km (0.11 R)
• M19: 7,383,403 km (0.04 R)
• M20: 7,629,192 km (0.118 R)
• M21: 7,877,674 km (0.048 R)
• M22: 7,961,000 km (0.117 R)
• M23: 8,340,081 km (0.058 R)
• M24: 9,467,750 km (0.037 R)
• M25: 9,512,031 km (0.094 R)
• M26: 9,556,462 km (0.12 R)
• M27: 9,690,052 km (0.09 R)
• M28: 10,367,282 km (0.12 R)
• M29: 10,550,539 km (0.069 R)
• M30: 11,059,771 km (0.087 R)
• M31: 11,200,093 km (0.112 R)
• M32: 12,295,000 km (0.117 R)
• M33: 12,928,996 km (0.12 R)
• M34: 13,423,866 km (0.118 R)
• M35: 14,330,130 km (0.058 R)
• M36: 14,842,203 km (0.108 R)
• M37: 15,048,648 km (0.114 R)
• M38: 15,100,409 km (0.12 R)
• M39: 15,516,740 km (0.086 R)
• M40: 15,569,099 km (0.101 R)
• M41: 15,936,811 km (0.07 R)
• M42: 16,413,878 km (0.08 R)
• M43: 17,927,809 km (0.113 R)
• M44: 18,037,614 km (0.034 R)
• M45: 18,534,727 km (0.076 R)
• M46: 20,682,654 km (0.056 R)
• M47: 21,377,087 km (0.098 R)
• M48: 21,610,310 km (0.055 R)
• M49: 21,961,715 km (0.115 R)
• M50: 22,079,299 km (0.103 R)
• M51: 22,433,098 km (0.076 R)
• M52: 22,551,580 km (0.06 R)
• M53: 22,788,842 km (0.103 R)
• M54: 23,746,717 km (0.103 R)
• M55: 24,473,763 km (0.109 R)
• M56: 25,331,108 km (0.041 R)
• M57: 26,198,327 km (0.037 R)
• M58: 26,322,942 km (0.108 R)
• M59: 26,385,324 km (0.119 R)
• M60: 26,635,452 km (0.115 R)
• M61: 27,075,120 km (0.081 R)
• M62: 28,025,366 km (0.091 R)
• M63: 30,153,844 km (0.105 R)
• M64: 30,612,063 km (0.114 R)
• M65: 30,940,729 km (0.111 R)
• M66: 31,867,189 km (0.063 R)
• M67: 32,133,623 km (0.075 R)
• M68: 32,267,064 km (0.089 R)
• M69: 33,341,476 km (0.086 R)
• M70: 33,815,103 km (0.103 R)
• M71: 33,950,938 km (0.109 R)
• M72: 36,286,460 km (0.105 R)
• M73: 36,356,023 km (0.113 R)
• M74: 36,843,562 km (0.116 R)
• M75: 37,895,534 km (0.105 R)
• M76: 40,100,906 km (0.071 R)
• M77: 40,460,539 km (0.118 R)
• M78: 40,821,220 km (0.096 R)
• M79: 41,909,544 km (0.11 R)
• M80: 43,301,852 km (0.103 R)
• M81: 44,411,718 km (0.074 R)
• M82: 45,455,911 km (0.091 R)
• M83: 45,755,855 km (0.065 R)
• M84: 46,734,824 km (0.079 R)
• M85: 47,037,460 km (0.058 R)
• M86: 48,407,477 km (0.086 R)
• M87: 48,483,922 km (0.085 R)
• M88: 50,331,755 km (0.107 R)
• M89: 51,030,526 km (0.111 R)
• M90: 51,342,288 km (0.039 R)
• M91: 51,967,308 km (0.106 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: 495 - 19,903 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit