🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 1.36 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.96

Radius: 1.54

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 1.12 AU - 1.6 AU

Year: 591 Days

Day: 43 Hours

Environment

Temp: -24 °C

Axial Tilt: 0.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 1.43 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.08

Radius: 1.75

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 1.42 AU - 1.44 AU

Year: 637 Days

Day: 42.5 Hours

Environment

Temp: -47 °C

Axial Tilt: 22.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 1.46 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.51

Radius: 0.76

Gravity: 0.88 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 1.16 AU - 1.76 AU

Year: 658 Days

Day: 38.1 Hours

Environment

Temp: -45 °C

Axial Tilt: 26.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 100,311,073 km

• M1: 240,853 km (0.08 R)

Planet 4 - Terrestrial

Semi-Major Axis: 2.74 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.3

Radius: 1.4

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 2.57 AU - 2.91 AU

Year: 1691 Days

Day: 46.3 Hours

Environment

Temp: -106 °C

Axial Tilt: 32.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Gas Giant

Semi-Major Axis: 5.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 315

Radius: 11.9

Gravity: 2.22 G

Time & Orbit

Eccentricity (e): 0.204

Orbit Range: 4.24 AU - 6.42 AU

Year: 4587 Days

Day: 5.5 Hours

Environment

Temp: -141 °C

Axial Tilt: 38.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (71)

Outer Limit: 100,311,073 km

• M1: 180,415 km (0.103 R)
• M2: 255,962 km (0.116 R)
• M3: 336,146 km (0.058 R)
• M4: 437,723 km (0.114 R)
• M5: 518,656 km (0.104 R)
• M6: 699,220 km (0.11 R)
• M7: 788,082 km (0.096 R)
• M8: 1,125,574 km (0.086 R)
• M9: 1,354,908 km (0.082 R)
• M10: 1,468,901 km (0.113 R)
• M11: 2,044,704 km (0.117 R)
• M12: 2,372,772 km (0.117 R)
• M13: 2,449,815 km (0.093 R)
• M14: 2,814,834 km (0.083 R)
• M15: 2,979,092 km (0.092 R)
• M16: 3,079,323 km (0.094 R)
• M17: 3,214,559 km (0.104 R)
• M18: 3,526,321 km (0.105 R)
• M19: 3,811,604 km (0.098 R)
• M20: 4,012,364 km (0.088 R)
• M21: 4,367,211 km (0.1 R)
• M22: 4,673,886 km (0.084 R)
• M23: 4,869,261 km (0.038 R)
• M24: 5,027,536 km (0.05 R)
• M25: 5,389,862 km (0.09 R)
• M26: 5,739,921 km (0.11 R)
• M27: 5,844,340 km (0.092 R)
• M28: 5,949,358 km (0.074 R)
• M29: 6,375,861 km (0.117 R)
• M30: 7,101,261 km (0.103 R)
• M31: 7,485,129 km (0.092 R)
• M32: 7,576,534 km (0.058 R)
• M33: 7,691,126 km (0.081 R)
• M34: 8,296,997 km (0.027 R)
• M35: 8,415,179 km (0.11 R)
• M36: 8,821,487 km (0.098 R)
• M37: 9,529,534 km (0.03 R)
• M38: 9,753,033 km (0.086 R)
• M39: 10,104,139 km (0.086 R)
• M40: 10,382,840 km (0.101 R)
• M41: 10,870,380 km (0.118 R)
• M42: 10,999,931 km (0.086 R)
• M43: 11,077,872 km (0.117 R)
• M44: 11,365,399 km (0.07 R)
• M45: 12,054,746 km (0.065 R)
• M46: 13,004,244 km (0.116 R)
• M47: 13,114,198 km (0.095 R)
• M48: 13,279,803 km (0.071 R)
• M49: 13,725,006 km (0.118 R)
• M50: 13,949,403 km (0.116 R)
• M51: 14,146,723 km (0.116 R)
• M52: 14,316,666 km (0.083 R)
• M53: 14,744,366 km (0.072 R)
• M54: 15,147,532 km (0.065 R)
• M55: 15,700,297 km (0.032 R)
• M56: 16,023,278 km (0.045 R)
• M57: 16,945,699 km (0.115 R)
• M58: 17,519,556 km (0.063 R)
• M59: 17,762,952 km (0.069 R)
• M60: 18,130,364 km (0.106 R)
• M61: 18,222,666 km (0.095 R)
• M62: 18,841,553 km (0.075 R)
• M63: 18,966,317 km (0.028 R)
• M64: 19,341,808 km (0.04 R)
• M65: 19,688,127 km (0.119 R)
• M66: 20,739,650 km (0.084 R)
• M67: 21,288,525 km (0.087 R)
• M68: 21,385,764 km (0.028 R)
• M69: 21,483,301 km (0.12 R)
• M70: 21,580,989 km (0.104 R)
• M71: 21,744,051 km (0.027 R)

Planet 6 - Ice Giant

Semi-Major Axis: 14.4 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 48.5

Radius: 7.3

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 12.57 AU - 16.23 AU

Year: 20370 Days

Day: 23.4 Hours

Environment

Temp: -194 °C

Axial Tilt: 41.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (55)

Outer Limit: 100,311,073 km

• M1: 109,356 km (0.11 R)
• M2: 272,717 km (0.115 R)
• M3: 394,041 km (0.103 R)
• M4: 456,722 km (0.047 R)
• M5: 717,471 km (0.076 R)
• M6: 782,995 km (0.078 R)
• M7: 850,613 km (0.073 R)
• M8: 1,110,615 km (0.085 R)
• M9: 1,250,040 km (0.054 R)
• M10: 1,562,999 km (0.096 R)
• M11: 2,220,481 km (0.092 R)
• M12: 2,456,846 km (0.115 R)
• M13: 2,722,382 km (0.111 R)
• M14: 3,039,978 km (0.035 R)
• M15: 3,214,260 km (0.045 R)
• M16: 5,078,698 km (0.08 R)
• M17: 5,601,692 km (0.103 R)
• M18: 5,788,690 km (0.093 R)
• M19: 5,977,931 km (0.119 R)
• M20: 6,251,695 km (0.058 R)
• M21: 6,334,572 km (0.107 R)
• M22: 6,445,723 km (0.105 R)
• M23: 6,501,673 km (0.112 R)
• M24: 7,387,442 km (0.064 R)
• M25: 7,533,898 km (0.04 R)
• M26: 7,919,113 km (0.077 R)
• M27: 8,493,569 km (0.049 R)
• M28: 10,101,147 km (0.09 R)
• M29: 10,328,985 km (0.105 R)
• M30: 11,324,708 km (0.076 R)
• M31: 11,971,121 km (0.092 R)
• M32: 12,212,273 km (0.107 R)
• M33: 12,350,800 km (0.118 R)
• M34: 13,121,977 km (0.076 R)
• M35: 13,800,553 km (0.086 R)
• M36: 14,234,985 km (0.103 R)
• M37: 16,359,275 km (0.102 R)
• M38: 16,473,718 km (0.084 R)
• M39: 17,011,821 km (0.093 R)
• M40: 17,790,179 km (0.093 R)
• M41: 18,223,414 km (0.051 R)
• M42: 18,381,689 km (0.117 R)
• M43: 20,977,062 km (0.064 R)
• M44: 21,351,057 km (0.052 R)
• M45: 21,476,270 km (0.07 R)
• M46: 21,685,408 km (0.092 R)
• M47: 22,147,965 km (0.052 R)
• M48: 22,869,326 km (0.042 R)
• M49: 23,512,148 km (0.098 R)
• M50: 24,465,685 km (0.108 R)
• M51: 25,079,036 km (0.104 R)
• M52: 27,946,827 km (0.086 R)
• M53: 29,651,644 km (0.12 R)
• M54: 30,963,917 km (0.088 R)
• M55: 31,058,313 km (0.104 R)

Planet 7 - Ice Giant

Semi-Major Axis: 16.2 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 755.4

Radius: 3.3

Gravity: 69.37 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 15.49 AU - 16.91 AU

Year: 24307 Days

Day: 19.8 Hours

Environment

Temp: -189 °C

Axial Tilt: 33.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (90)

Outer Limit: 100,311,073 km

• M1: 63,729 km (0.113 R)
• M2: 173,683 km (0.059 R)
• M3: 923,916 km (0.054 R)
• M4: 1,041,500 km (0.096 R)
• M5: 1,071,719 km (0.118 R)
• M6: 1,226,852 km (0.101 R)
• M7: 1,422,526 km (0.099 R)
• M8: 1,878,949 km (0.1 R)
• M9: 2,027,949 km (0.106 R)
• M10: 2,258,629 km (0.118 R)
• M11: 2,538,077 km (0.034 R)
• M12: 3,085,606 km (0.049 R)
• M13: 3,350,244 km (0.105 R)
• M14: 3,485,331 km (0.05 R)
• M15: 3,622,213 km (0.111 R)
• M16: 4,283,885 km (0.06 R)
• M17: 4,578,592 km (0.056 R)
• M18: 5,187,755 km (0.042 R)
• M19: 5,239,665 km (0.109 R)
• M20: 6,368,681 km (0.09 R)
• M21: 6,592,030 km (0.048 R)
• M22: 6,817,923 km (0.119 R)
• M23: 7,687,386 km (0.085 R)
• M24: 7,865,407 km (0.036 R)
• M25: 8,899,727 km (0.099 R)
• M26: 9,719,074 km (0.087 R)
• M27: 9,783,102 km (0.095 R)
• M28: 10,431,011 km (0.063 R)
• M29: 11,092,682 km (0.06 R)
• M30: 11,631,683 km (0.113 R)
• M31: 12,179,211 km (0.076 R)
• M32: 13,441,518 km (0.109 R)
• M33: 14,378,749 km (0.1 R)
• M34: 14,451,753 km (0.11 R)
• M35: 16,239,447 km (0.082 R)
• M36: 16,315,443 km (0.082 R)
• M37: 16,620,623 km (0.115 R)
• M38: 16,773,811 km (0.075 R)
• M39: 18,095,508 km (0.107 R)
• M40: 20,754,909 km (0.093 R)
• M41: 21,417,628 km (0.116 R)
• M42: 22,171,601 km (0.053 R)
• M43: 22,594,215 km (0.041 R)
• M44: 22,764,009 km (0.054 R)
• M45: 25,009,323 km (0.113 R)
• M46: 25,272,915 km (0.119 R)
• M47: 27,053,728 km (0.06 R)
• M48: 27,868,139 km (0.042 R)
• M49: 28,507,071 km (0.097 R)
• M50: 28,690,478 km (0.081 R)
• M51: 30,078,896 km (0.106 R)
• M52: 31,299,764 km (0.118 R)
• M53: 31,963,829 km (0.074 R)
• M54: 32,728,424 km (0.056 R)
• M55: 33,499,002 km (0.113 R)
• M56: 34,763,852 km (0.095 R)
• M57: 35,156,248 km (0.059 R)
• M58: 41,421,855 km (0.12 R)
• M59: 42,255,115 km (0.086 R)
• M60: 43,093,761 km (0.045 R)
• M61: 43,304,245 km (0.113 R)
• M62: 46,826,976 km (0.081 R)
• M63: 47,260,062 km (0.087 R)
• M64: 47,368,670 km (0.12 R)
• M65: 48,021,365 km (0.103 R)
• M66: 49,887,150 km (0.074 R)
• M67: 49,997,553 km (0.097 R)
• M68: 50,218,808 km (0.108 R)
• M69: 50,329,511 km (0.114 R)
• M70: 50,884,369 km (0.088 R)
• M71: 54,824,628 km (0.111 R)
• M72: 54,938,621 km (0.095 R)
• M73: 55,166,908 km (0.095 R)
• M74: 56,543,208 km (0.082 R)
• M75: 58,395,529 km (0.11 R)
• M76: 58,745,139 km (0.111 R)
• M77: 60,385,480 km (0.076 R)
• M78: 64,672,207 km (0.117 R)
• M79: 65,638,011 km (0.078 R)
• M80: 67,339,686 km (0.11 R)
• M81: 72,155,840 km (0.1 R)
• M82: 73,408,573 km (0.068 R)
• M83: 74,415,965 km (0.047 R)
• M84: 74,542,225 km (0.091 R)
• M85: 75,301,135 km (0.082 R)
• M86: 75,427,845 km (0.069 R)
• M87: 78,233,852 km (0.085 R)
• M88: 81,854,420 km (0.077 R)
• M89: 84,737,171 km (0.049 R)
• M90: 88,721,411 km (0.085 R)

Planet 8 - Ice Giant

Semi-Major Axis: 18.96 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 752.1

Radius: 5.3

Gravity: 26.77 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 18.75 AU - 19.17 AU

Year: 30776 Days

Day: 22.9 Hours

Environment

Temp: -210 °C

Axial Tilt: 13.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (93)

Outer Limit: 100,311,073 km

• M1: 140,772 km (0.119 R)
• M2: 220,956 km (0.115 R)
• M3: 318,344 km (0.1 R)
• M4: 933,940 km (0.086 R)
• M5: 1,030,879 km (0.12 R)
• M6: 1,961,078 km (0.096 R)
• M7: 2,702,934 km (0.085 R)
• M8: 2,842,060 km (0.12 R)
• M9: 2,983,580 km (0.038 R)
• M10: 3,175,963 km (0.093 R)
• M11: 4,090,455 km (0.107 R)
• M12: 4,196,819 km (0.087 R)
• M13: 5,023,496 km (0.096 R)
• M14: 5,839,104 km (0.051 R)
• M15: 6,262,167 km (0.025 R)
• M16: 7,394,772 km (0.104 R)
• M17: 8,385,858 km (0.095 R)
• M18: 9,417,934 km (0.079 R)
• M19: 9,913,252 km (0.115 R)
• M20: 10,562,358 km (0.09 R)
• M21: 11,076,675 km (0.037 R)
• M22: 12,282,733 km (0.12 R)
• M23: 13,450,793 km (0.117 R)
• M24: 13,847,976 km (0.12 R)
• M25: 13,927,861 km (0.068 R)
• M26: 14,410,464 km (0.086 R)
• M27: 15,890,735 km (0.105 R)
• M28: 17,851,664 km (0.111 R)
• M29: 18,463,369 km (0.111 R)
• M30: 20,886,556 km (0.102 R)
• M31: 21,438,572 km (0.102 R)
• M32: 23,122,894 km (0.065 R)
• M33: 25,924,713 km (0.075 R)
• M34: 26,815,718 km (0.105 R)
• M35: 27,515,686 km (0.09 R)
• M36: 28,627,797 km (0.11 R)
• M37: 28,831,549 km (0.07 R)
• M38: 29,138,075 km (0.116 R)
• M39: 30,687,011 km (0.075 R)
• M40: 32,156,661 km (0.064 R)
• M41: 33,541,787 km (0.096 R)
• M42: 35,820,013 km (0.103 R)
• M43: 35,929,818 km (0.06 R)
• M44: 36,369,786 km (0.112 R)
• M45: 36,700,995 km (0.1 R)
• M46: 38,147,756 km (0.119 R)
• M47: 41,672,132 km (0.079 R)
• M48: 41,787,622 km (0.116 R)
• M49: 42,250,328 km (0.109 R)
• M50: 42,831,067 km (0.119 R)
• M51: 43,180,827 km (0.083 R)
• M52: 43,297,663 km (0.115 R)
• M53: 43,765,755 km (0.097 R)
• M54: 44,707,324 km (0.103 R)
• M55: 46,610,059 km (0.061 R)
• M56: 47,330,522 km (0.08 R)
• M57: 47,571,375 km (0.08 R)
• M58: 52,849,188 km (0.118 R)
• M59: 52,974,102 km (0.075 R)
• M60: 57,793,846 km (0.111 R)
• M61: 58,180,257 km (0.071 R)
• M62: 59,344,578 km (0.052 R)
• M63: 61,959,698 km (0.118 R)
• M64: 62,487,180 km (0.079 R)
• M65: 62,619,275 km (0.058 R)
• M66: 64,211,744 km (0.061 R)
• M67: 64,745,510 km (0.114 R)
• M68: 64,879,250 km (0.104 R)
• M69: 67,572,161 km (0.112 R)
• M70: 69,615,668 km (0.07 R)
• M71: 70,438,756 km (0.077 R)
• M72: 72,510,387 km (0.106 R)
• M73: 75,163,206 km (0.12 R)
• M74: 78,844,511 km (0.109 R)
• M75: 81,716,042 km (0.119 R)
• M76: 83,891,943 km (0.058 R)
• M77: 84,037,651 km (0.1 R)
• M78: 85,060,302 km (0.042 R)
• M79: 86,086,992 km (0.054 R)
• M80: 89,489,147 km (0.07 R)
• M81: 89,936,145 km (0.112 R)
• M82: 90,383,742 km (0.051 R)
• M83: 91,131,732 km (0.095 R)
• M84: 91,281,479 km (0.098 R)
• M85: 93,538,612 km (0.101 R)
• M86: 94,295,128 km (0.104 R)
• M87: 94,446,671 km (0.056 R)
• M88: 95,053,589 km (0.036 R)
• M89: 95,205,431 km (0.067 R)
• M90: 99,492,457 km (0.053 R)
• M91: 100,574,050 km (0.115 R)
• M92: 100,728,884 km (0.103 R)
• M93: 102,748,904 km (0.113 R)

Planet 9 - Ice Giant

Semi-Major Axis: 19.17 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 641.3

Radius: 4.9

Gravity: 26.71 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 14.68 AU - 23.66 AU

Year: 31289 Days

Day: 16.7 Hours

Environment

Temp: -203 °C

Axial Tilt: 1.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (91)

Outer Limit: 100,311,073 km

• M1: 86,318 km (0.085 R)
• M2: 161,117 km (0.063 R)
• M3: 388,057 km (0.091 R)
• M4: 833,111 km (0.115 R)
• M5: 1,425,219 km (0.115 R)
• M6: 2,329,388 km (0.082 R)
• M7: 3,619,072 km (0.085 R)
• M8: 3,718,405 km (0.032 R)
• M9: 4,228,234 km (0.11 R)
• M10: 4,438,419 km (0.11 R)
• M11: 4,544,634 km (0.114 R)
• M12: 5,711,048 km (0.084 R)
• M13: 7,400,008 km (0.051 R)
• M14: 8,298,044 km (0.086 R)
• M15: 9,777,418 km (0.072 R)
• M16: 9,915,945 km (0.068 R)
• M17: 10,405,729 km (0.066 R)
• M18: 11,335,928 km (0.095 R)
• M19: 11,774,250 km (0.097 R)
• M20: 11,995,505 km (0.112 R)
• M21: 12,894,140 km (0.048 R)
• M22: 13,198,422 km (0.114 R)
• M23: 14,047,539 km (0.032 R)
• M24: 14,125,629 km (0.089 R)
• M25: 14,518,174 km (0.112 R)
• M26: 18,208,155 km (0.102 R)
• M27: 19,151,819 km (0.098 R)
• M28: 19,238,436 km (0.113 R)
• M29: 19,499,035 km (0.098 R)
• M30: 21,175,878 km (0.116 R)
• M31: 21,444,855 km (0.049 R)
• M32: 23,544,311 km (0.096 R)
• M33: 23,823,012 km (0.06 R)
• M34: 24,289,757 km (0.114 R)
• M35: 24,477,353 km (0.027 R)
• M36: 25,995,173 km (0.073 R)
• M37: 26,283,149 km (0.101 R)
• M38: 28,033,145 km (0.092 R)
• M39: 28,328,451 km (0.091 R)
• M40: 28,427,186 km (0.063 R)
• M41: 28,624,805 km (0.047 R)
• M42: 29,021,538 km (0.09 R)
• M43: 29,920,771 km (0.091 R)
• M44: 30,727,702 km (0.073 R)
• M45: 33,608,059 km (0.097 R)
• M46: 35,398,447 km (0.12 R)
• M47: 35,504,661 km (0.063 R)
• M48: 38,304,984 km (0.079 R)
• M49: 40,173,910 km (0.115 R)
• M50: 40,952,118 km (0.089 R)
• M51: 41,287,068 km (0.087 R)
• M52: 42,523,195 km (0.118 R)
• M53: 42,975,728 km (0.057 R)
• M54: 43,543,751 km (0.102 R)
• M55: 44,572,087 km (0.113 R)
• M56: 45,955,867 km (0.112 R)
• M57: 46,071,806 km (0.118 R)
• M58: 46,187,894 km (0.051 R)
• M59: 46,420,219 km (0.05 R)
• M60: 48,529,100 km (0.054 R)
• M61: 49,357,573 km (0.096 R)
• M62: 50,071,455 km (0.032 R)
• M63: 51,268,686 km (0.075 R)
• M64: 52,354,468 km (0.119 R)
• M65: 54,303,129 km (0.066 R)
• M66: 59,151,447 km (0.1 R)
• M67: 60,416,746 km (0.051 R)
• M68: 61,180,293 km (0.028 R)
• M69: 61,307,751 km (0.111 R)
• M70: 64,006,795 km (0.101 R)
• M71: 65,827,551 km (0.085 R)
• M72: 66,219,946 km (0.096 R)
• M73: 66,350,844 km (0.078 R)
• M74: 68,458,080 km (0.07 R)
• M75: 69,786,060 km (0.074 R)
• M76: 72,332,814 km (0.062 R)
• M77: 74,364,653 km (0.111 R)
• M78: 74,637,070 km (0.117 R)
• M79: 76,003,647 km (0.087 R)
• M80: 76,552,671 km (0.089 R)
• M81: 79,317,240 km (0.079 R)
• M82: 79,874,193 km (0.097 R)
• M83: 80,711,791 km (0.078 R)
• M84: 84,375,293 km (0.054 R)
• M85: 88,236,714 km (0.053 R)
• M86: 92,447,744 km (0.093 R)
• M87: 93,620,891 km (0.105 R)
• M88: 96,575,299 km (0.103 R)
• M89: 97,467,501 km (0.061 R)
• M90: 99,110,534 km (0.028 R)
• M91: 100,160,711 km (0.061 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 539 - 16,691 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit