🌌 Stone's Star System Generator

Planet 1 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 135.3

Radius: 10

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 0.78 AU - 1.1 AU

Year: 629 Days

Day: 11.7 Hours

Environment

Temp: -168 °C

Axial Tilt: 29.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 79,512,542 km

• M1: 127,457 km (0.059 R)
• M2: 195,524 km (0.115 R)
• M3: 276,606 km (0.107 R)
• M4: 376,089 km (0.109 R)
• M5: 463,005 km (0.097 R)
• M6: 525,537 km (0.085 R)
• M7: 667,207 km (0.049 R)
• M8: 763,548 km (0.114 R)
• M9: 857,794 km (0.096 R)
• M10: 945,159 km (0.047 R)
• M11: 1,043,445 km (0.095 R)
• M12: 1,109,717 km (0.1 R)
• M13: 1,201,720 km (0.109 R)
• M14: 1,355,506 km (0.047 R)
• M15: 1,424,022 km (0.079 R)
• M16: 1,515,875 km (0.087 R)
• M17: 1,605,185 km (0.113 R)
• M18: 1,927,419 km (0.105 R)
• M19: 1,995,336 km (0.027 R)
• M20: 2,078,962 km (0.101 R)
• M21: 2,173,807 km (0.045 R)
• M22: 2,244,566 km (0.1 R)
• M23: 2,414,659 km (0.032 R)
• M24: 2,589,090 km (0.118 R)
• M25: 2,740,483 km (0.118 R)
• M26: 2,844,903 km (0.112 R)
• M27: 2,972,958 km (0.091 R)
• M28: 3,040,726 km (0.087 R)
• M29: 3,148,886 km (0.052 R)
• M30: 3,246,723 km (0.081 R)
• M31: 3,328,104 km (0.117 R)
• M32: 3,457,506 km (0.103 R)
• M33: 3,570,452 km (0.11 R)
• M34: 3,672,777 km (0.11 R)
• M35: 3,781,984 km (0.097 R)
• M36: 4,053,803 km (0.12 R)
• M37: 4,116,485 km (0.102 R)
• M38: 4,198,464 km (0.066 R)
• M39: 4,332,055 km (0.053 R)
• M40: 4,396,083 km (0.084 R)

Planet 2 - Gas Giant

Semi-Major Axis: 1.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 313.2

Radius: 14.1

Gravity: 1.58 G

Time & Orbit

Eccentricity (e): 0.112

Orbit Range: 1.18 AU - 1.48 AU

Year: 1059 Days

Day: 5.4 Hours

Environment

Temp: -186 °C

Axial Tilt: 34.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (48)

Outer Limit: 79,512,542 km

• M1: 226,042 km (0.1 R)
• M2: 318,793 km (0.084 R)
• M3: 466,446 km (0.062 R)
• M4: 998,715 km (0.104 R)
• M5: 1,120,488 km (0.055 R)
• M6: 1,303,895 km (0.061 R)
• M7: 1,419,085 km (0.07 R)
• M8: 1,605,484 km (0.036 R)
• M9: 1,886,280 km (0.056 R)
• M10: 2,085,095 km (0.055 R)
• M11: 2,183,381 km (0.092 R)
• M12: 2,392,818 km (0.072 R)
• M13: 2,536,133 km (0.038 R)
• M14: 2,731,956 km (0.077 R)
• M15: 2,856,871 km (0.05 R)
• M16: 3,000,933 km (0.065 R)
• M17: 3,112,832 km (0.116 R)
• M18: 3,429,830 km (0.064 R)
• M19: 3,556,091 km (0.108 R)
• M20: 3,748,324 km (0.035 R)
• M21: 3,850,500 km (0.04 R)
• M22: 4,076,542 km (0.065 R)
• M23: 4,172,135 km (0.066 R)
• M24: 4,385,013 km (0.037 R)
• M25: 4,571,711 km (0.117 R)
• M26: 4,661,170 km (0.111 R)
• M27: 4,821,689 km (0.088 R)
• M28: 5,045,338 km (0.103 R)
• M29: 5,272,427 km (0.109 R)
• M30: 5,566,387 km (0.057 R)
• M31: 5,662,130 km (0.056 R)
• M32: 5,812,027 km (0.118 R)
• M33: 6,083,098 km (0.115 R)
• M34: 6,247,805 km (0.045 R)
• M35: 6,358,358 km (0.038 R)
• M36: 6,480,729 km (0.11 R)
• M37: 6,649,027 km (0.101 R)
• M38: 6,875,668 km (0.066 R)
• M39: 7,070,295 km (0.075 R)
• M40: 7,174,115 km (0.059 R)
• M41: 7,266,717 km (0.044 R)
• M42: 7,359,916 km (0.032 R)
• M43: 7,453,415 km (0.102 R)
• M44: 7,641,609 km (0.072 R)
• M45: 7,855,235 km (0.112 R)
• M46: 7,950,828 km (0.06 R)
• M47: 8,107,008 km (0.1 R)
• M48: 8,252,118 km (0.111 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 446.1

Radius: 13

Gravity: 2.64 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 2.21 AU - 3.29 AU

Year: 3148 Days

Day: 6.3 Hours

Environment

Temp: -205 °C

Axial Tilt: 32.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (71)

Outer Limit: 79,512,542 km

• M1: 163,361 km (0.075 R)
• M2: 255,812 km (0.072 R)
• M3: 349,760 km (0.069 R)
• M4: 537,655 km (0.098 R)
• M5: 791,822 km (0.047 R)
• M6: 954,135 km (0.092 R)
• M7: 1,117,795 km (0.099 R)
• M8: 1,269,188 km (0.116 R)
• M9: 1,358,947 km (0.117 R)
• M10: 1,666,371 km (0.111 R)
• M11: 1,815,969 km (0.107 R)
• M12: 1,905,278 km (0.077 R)
• M13: 2,182,783 km (0.092 R)
• M14: 2,431,265 km (0.095 R)
• M15: 2,660,000 km (0.068 R)
• M16: 2,866,146 km (0.069 R)
• M17: 3,077,527 km (0.069 R)
• M18: 3,247,321 km (0.119 R)
• M19: 3,468,127 km (0.088 R)
• M20: 3,628,796 km (0.091 R)
• M21: 3,742,939 km (0.095 R)
• M22: 3,858,129 km (0.089 R)
• M23: 3,941,156 km (0.037 R)
• M24: 4,417,625 km (0.081 R)
• M25: 4,698,121 km (0.045 R)
• M26: 5,020,804 km (0.086 R)
• M27: 5,706,860 km (0.072 R)
• M28: 6,363,445 km (0.1 R)
• M29: 6,541,167 km (0.12 R)
• M30: 6,760,926 km (0.103 R)
• M31: 7,351,688 km (0.038 R)
• M32: 7,434,416 km (0.065 R)
• M33: 7,580,124 km (0.08 R)
• M34: 7,726,730 km (0.08 R)
• M35: 8,344,270 km (0.093 R)
• M36: 8,560,888 km (0.119 R)
• M37: 8,713,627 km (0.117 R)
• M38: 8,933,536 km (0.114 R)
• M39: 9,088,519 km (0.12 R)
• M40: 9,199,671 km (0.12 R)
• M41: 9,333,860 km (0.114 R)
• M42: 9,581,444 km (0.062 R)
• M43: 9,854,012 km (0.073 R)
• M44: 11,470,716 km (0.05 R)
• M45: 11,567,057 km (0.112 R)
• M46: 11,663,548 km (0.096 R)
• M47: 11,833,042 km (0.096 R)
• M48: 11,954,665 km (0.092 R)
• M49: 12,150,189 km (0.069 R)
• M50: 12,322,077 km (0.082 R)
• M51: 12,569,063 km (0.047 R)
• M52: 12,718,063 km (0.051 R)
• M53: 12,992,725 km (0.047 R)
• M54: 13,395,741 km (0.103 R)
• M55: 13,522,600 km (0.117 R)
• M56: 13,726,353 km (0.108 R)
• M57: 14,110,969 km (0.114 R)
• M58: 14,265,952 km (0.078 R)
• M59: 14,499,325 km (0.094 R)
• M60: 14,838,762 km (0.104 R)
• M61: 15,048,947 km (0.108 R)
• M62: 15,260,030 km (0.103 R)
• M63: 15,392,574 km (0.109 R)
• M64: 16,006,972 km (0.102 R)
• M65: 16,493,315 km (0.08 R)
• M66: 16,574,846 km (0.091 R)
• M67: 16,957,218 km (0.101 R)
• M68: 17,842,089 km (0.1 R)
• M69: 18,430,906 km (0.107 R)
• M70: 18,628,525 km (0.051 R)
• M71: 18,741,920 km (0.112 R)

Planet 4 - Ice Giant

Semi-Major Axis: 6.93 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 391.8

Radius: 5.9

Gravity: 11.26 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 6.51 AU - 7.35 AU

Year: 12592 Days

Day: 17.9 Hours

Environment

Temp: -223 °C

Axial Tilt: 12.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (91)

Outer Limit: 79,512,542 km

• M1: 74,799 km (0.085 R)
• M2: 351,106 km (0.063 R)
• M3: 403,017 km (0.084 R)
• M4: 1,262,157 km (0.071 R)
• M5: 1,324,091 km (0.037 R)
• M6: 1,429,856 km (0.104 R)
• M7: 1,649,466 km (0.081 R)
• M8: 1,879,996 km (0.103 R)
• M9: 2,294,981 km (0.075 R)
• M10: 2,955,156 km (0.101 R)
• M11: 3,552,201 km (0.038 R)
• M12: 3,759,544 km (0.098 R)
• M13: 4,499,605 km (0.064 R)
• M14: 4,659,375 km (0.064 R)
• M15: 4,918,928 km (0.094 R)
• M16: 4,984,601 km (0.03 R)
• M17: 5,350,667 km (0.116 R)
• M18: 5,588,228 km (0.082 R)
• M19: 5,829,231 km (0.075 R)
• M20: 6,900,202 km (0.073 R)
• M21: 7,121,607 km (0.051 R)
• M22: 7,647,294 km (0.109 R)
• M23: 8,146,502 km (0.102 R)
• M24: 8,815,204 km (0.096 R)
• M25: 9,015,366 km (0.119 R)
• M26: 10,330,631 km (0.095 R)
• M27: 10,541,564 km (0.084 R)
• M28: 10,583,900 km (0.117 R)
• M29: 11,442,891 km (0.072 R)
• M30: 11,486,424 km (0.074 R)
• M31: 12,458,062 km (0.056 R)
• M32: 12,863,023 km (0.056 R)
• M33: 12,999,008 km (0.094 R)
• M34: 13,044,486 km (0.06 R)
• M35: 13,871,313 km (0.031 R)
• M36: 14,103,938 km (0.065 R)
• M37: 14,150,612 km (0.086 R)
• M38: 14,384,882 km (0.11 R)
• M39: 14,999,879 km (0.082 R)
• M40: 15,190,766 km (0.117 R)
• M41: 15,334,530 km (0.093 R)
• M42: 16,697,815 km (0.08 R)
• M43: 16,945,400 km (0.072 R)
• M44: 17,293,963 km (0.093 R)
• M45: 17,896,992 km (0.032 R)
• M46: 18,251,838 km (0.113 R)
• M47: 18,711,702 km (0.084 R)
• M48: 20,377,025 km (0.081 R)
• M49: 20,429,833 km (0.085 R)
• M50: 20,907,200 km (0.111 R)
• M51: 21,227,489 km (0.074 R)
• M52: 21,388,157 km (0.096 R)
• M53: 21,495,568 km (0.085 R)
• M54: 21,872,705 km (0.11 R)
• M55: 22,852,870 km (0.109 R)
• M56: 23,458,741 km (0.055 R)
• M57: 24,181,748 km (0.098 R)
• M58: 25,992,181 km (0.094 R)
• M59: 26,164,219 km (0.076 R)
• M60: 26,509,341 km (0.117 R)
• M61: 26,740,171 km (0.115 R)
• M62: 26,913,704 km (0.088 R)
• M63: 26,971,748 km (0.071 R)
• M64: 27,611,877 km (0.098 R)
• M65: 27,963,133 km (0.091 R)
• M66: 28,788,614 km (0.063 R)
• M67: 29,383,116 km (0.087 R)
• M68: 30,523,800 km (0.073 R)
• M69: 30,826,436 km (0.092 R)
• M70: 32,169,676 km (0.109 R)
• M71: 32,662,750 km (0.103 R)
• M72: 32,848,401 km (0.12 R)
• M73: 33,531,764 km (0.106 R)
• M74: 33,656,529 km (0.047 R)
• M75: 34,157,233 km (0.118 R)
• M76: 35,165,822 km (0.092 R)
• M77: 36,184,135 km (0.079 R)
• M78: 37,729,780 km (0.065 R)
• M79: 37,924,556 km (0.07 R)
• M80: 38,380,082 km (0.077 R)
• M81: 38,706,654 km (0.118 R)
• M82: 38,837,552 km (0.09 R)
• M83: 39,231,144 km (0.115 R)
• M84: 39,362,641 km (0.076 R)
• M85: 39,889,973 km (0.109 R)
• M86: 40,088,340 km (0.077 R)
• M87: 42,224,597 km (0.105 R)
• M88: 43,102,886 km (0.08 R)
• M89: 43,510,391 km (0.113 R)
• M90: 43,578,458 km (0.056 R)
• M91: 46,328,516 km (0.111 R)

Planet 5 - Ice Giant

Semi-Major Axis: 8.85 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 495.9

Radius: 3.2

Gravity: 48.43 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 8.48 AU - 9.22 AU

Year: 18173 Days

Day: 21.4 Hours

Environment

Temp: -239 °C

Axial Tilt: 28 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (93)

Outer Limit: 79,512,542 km

• M1: 69,563 km (0.061 R)
• M2: 157,527 km (0.081 R)
• M3: 293,062 km (0.031 R)
• M4: 372,648 km (0.087 R)
• M5: 514,317 km (0.093 R)
• M6: 552,166 km (0.098 R)
• M7: 734,526 km (0.042 R)
• M8: 777,610 km (0.056 R)
• M9: 821,292 km (0.092 R)
• M10: 1,329,177 km (0.118 R)
• M11: 1,516,474 km (0.09 R)
• M12: 2,065,348 km (0.069 R)
• M13: 2,250,401 km (0.109 R)
• M14: 3,323,466 km (0.079 R)
• M15: 6,336,517 km (0.075 R)
• M16: 6,604,447 km (0.096 R)
• M17: 6,694,654 km (0.098 R)
• M18: 6,830,639 km (0.072 R)
• M19: 7,998,549 km (0.106 R)
• M20: 8,191,082 km (0.111 R)
• M21: 8,288,021 km (0.074 R)
• M22: 9,277,162 km (0.06 R)
• M23: 10,198,835 km (0.118 R)
• M24: 10,355,165 km (0.087 R)
• M25: 11,095,674 km (0.117 R)
• M26: 11,256,492 km (0.083 R)
• M27: 12,182,652 km (0.11 R)
• M28: 12,404,057 km (0.119 R)
• M29: 13,588,274 km (0.105 R)
• M30: 14,397,598 km (0.084 R)
• M31: 15,341,561 km (0.09 R)
• M32: 16,183,647 km (0.088 R)
• M33: 16,244,384 km (0.067 R)
• M34: 17,787,037 km (0.058 R)
• M35: 19,569,496 km (0.098 R)
• M36: 20,219,798 km (0.087 R)
• M37: 20,613,240 km (0.109 R)
• M38: 21,208,341 km (0.107 R)
• M39: 21,608,216 km (0.12 R)
• M40: 22,280,060 km (0.116 R)
• M41: 22,686,517 km (0.111 R)
• M42: 22,754,435 km (0.071 R)
• M43: 24,197,456 km (0.101 R)
• M44: 25,387,058 km (0.091 R)
• M45: 25,882,526 km (0.075 R)
• M46: 27,460,036 km (0.067 R)
• M47: 27,604,996 km (0.031 R)
• M48: 28,187,380 km (0.105 R)
• M49: 28,626,749 km (0.057 R)
• M50: 28,773,804 km (0.104 R)
• M51: 30,631,959 km (0.059 R)
• M52: 31,765,462 km (0.082 R)
• M53: 32,070,044 km (0.042 R)
• M54: 32,299,078 km (0.094 R)
• M55: 32,835,685 km (0.118 R)
• M56: 32,989,472 km (0.089 R)
• M57: 33,220,750 km (0.105 R)
• M58: 33,917,577 km (0.054 R)
• M59: 33,995,368 km (0.111 R)
• M60: 34,541,101 km (0.085 R)
• M61: 35,325,892 km (0.049 R)
• M62: 36,753,055 km (0.11 R)
• M63: 39,336,311 km (0.118 R)
• M64: 40,073,380 km (0.066 R)
• M65: 40,649,781 km (0.095 R)
• M66: 41,394,928 km (0.115 R)
• M67: 41,561,131 km (0.073 R)
• M68: 41,977,611 km (0.103 R)
• M69: 42,479,213 km (0.081 R)
• M70: 44,846,001 km (0.037 R)
• M71: 45,873,439 km (0.102 R)
• M72: 46,303,683 km (0.069 R)
• M73: 49,265,571 km (0.097 R)
• M74: 49,441,647 km (0.055 R)
• M75: 49,882,812 km (0.078 R)
• M76: 50,591,457 km (0.091 R)
• M77: 50,680,318 km (0.076 R)
• M78: 51,036,062 km (0.03 R)
• M79: 53,188,177 km (0.073 R)
• M80: 54,457,215 km (0.088 R)
• M81: 55,827,831 km (0.118 R)
• M82: 56,287,246 km (0.114 R)
• M83: 56,840,160 km (0.044 R)
• M84: 56,932,611 km (0.084 R)
• M85: 58,696,370 km (0.099 R)
• M86: 59,725,603 km (0.109 R)
• M87: 60,101,393 km (0.081 R)
• M88: 60,572,327 km (0.051 R)
• M89: 62,467,732 km (0.053 R)
• M90: 62,849,207 km (0.087 R)
• M91: 63,422,765 km (0.051 R)
• M92: 63,518,508 km (0.114 R)
• M93: 64,094,161 km (0.108 R)

Planet 6 - Ice Giant

Semi-Major Axis: 9.97 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 662.2

Radius: 6.8

Gravity: 14.32 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 9.78 AU - 10.16 AU

Year: 21730 Days

Day: 18.7 Hours

Environment

Temp: -226 °C

Axial Tilt: 12 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (94)

Outer Limit: 79,512,542 km

• M1: 87,066 km (0.102 R)
• M2: 131,048 km (0.088 R)
• M3: 326,273 km (0.119 R)
• M4: 518,057 km (0.062 R)
• M5: 649,853 km (0.068 R)
• M6: 792,869 km (0.111 R)
• M7: 1,137,093 km (0.042 R)
• M8: 1,194,090 km (0.12 R)
• M9: 1,281,156 km (0.062 R)
• M10: 1,881,792 km (0.048 R)
• M11: 2,671,968 km (0.116 R)
• M12: 3,386,297 km (0.097 R)
• M13: 3,469,175 km (0.101 R)
• M14: 4,379,777 km (0.095 R)
• M15: 5,750,393 km (0.031 R)
• M16: 6,819,120 km (0.108 R)
• M17: 7,565,015 km (0.11 R)
• M18: 8,058,089 km (0.105 R)
• M19: 8,731,729 km (0.117 R)
• M20: 9,540,305 km (0.067 R)
• M21: 10,252,241 km (0.079 R)
• M22: 10,614,717 km (0.107 R)
• M23: 11,726,977 km (0.095 R)
• M24: 12,360,674 km (0.074 R)
• M25: 12,424,702 km (0.028 R)
• M26: 12,940,665 km (0.096 R)
• M27: 13,005,590 km (0.087 R)
• M28: 13,727,549 km (0.119 R)
• M29: 13,793,821 km (0.079 R)
• M30: 14,260,866 km (0.102 R)
• M31: 16,320,081 km (0.089 R)
• M32: 16,601,624 km (0.066 R)
• M33: 17,455,977 km (0.067 R)
• M34: 19,802,869 km (0.099 R)
• M35: 20,329,303 km (0.091 R)
• M36: 20,632,239 km (0.109 R)
• M37: 21,549,872 km (0.096 R)
• M38: 21,704,108 km (0.057 R)
• M39: 22,872,617 km (0.04 R)
• M40: 23,504,219 km (0.113 R)
• M41: 23,742,379 km (0.104 R)
• M42: 25,922,917 km (0.112 R)
• M43: 27,245,063 km (0.04 R)
• M44: 27,578,966 km (0.077 R)
• M45: 30,905,125 km (0.113 R)
• M46: 31,079,107 km (0.107 R)
• M47: 31,427,969 km (0.096 R)
• M48: 31,690,514 km (0.101 R)
• M49: 31,865,992 km (0.089 R)
• M50: 31,953,806 km (0.06 R)
• M51: 32,748,021 km (0.093 R)
• M52: 32,836,583 km (0.101 R)
• M53: 33,014,156 km (0.106 R)
• M54: 35,078,457 km (0.116 R)
• M55: 35,169,113 km (0.087 R)
• M56: 35,441,680 km (0.085 R)
• M57: 37,369,099 km (0.113 R)
• M58: 37,833,002 km (0.05 R)
• M59: 38,298,850 km (0.092 R)
• M60: 41,229,173 km (0.102 R)
• M61: 42,672,793 km (0.115 R)
• M62: 44,524,964 km (0.116 R)
• M63: 45,115,277 km (0.102 R)
• M64: 45,411,481 km (0.1 R)
• M65: 48,005,059 km (0.112 R)
• M66: 48,812,588 km (0.083 R)
• M67: 49,828,508 km (0.032 R)
• M68: 50,339,085 km (0.101 R)
• M69: 50,543,735 km (0.103 R)
• M70: 52,191,256 km (0.089 R)
• M71: 52,813,733 km (0.101 R)
• M72: 53,856,430 km (0.108 R)
• M73: 54,800,692 km (0.1 R)
• M74: 55,222,109 km (0.109 R)
• M75: 55,750,489 km (0.114 R)
• M76: 56,492,943 km (0.053 R)
• M77: 56,705,671 km (0.113 R)
• M78: 57,880,314 km (0.029 R)
• M79: 57,987,575 km (0.06 R)
• M80: 58,739,754 km (0.074 R)
• M81: 59,603,382 km (0.107 R)
• M82: 61,233,999 km (0.068 R)
• M83: 61,890,285 km (0.055 R)
• M84: 63,099,634 km (0.057 R)
• M85: 64,205,910 km (0.109 R)
• M86: 66,437,312 km (0.1 R)
• M87: 66,661,858 km (0.089 R)
• M88: 67,788,330 km (0.105 R)
• M89: 68,127,469 km (0.117 R)
• M90: 70,975,962 km (0.089 R)
• M91: 72,587,879 km (0.091 R)
• M92: 74,328,450 km (0.108 R)
• M93: 74,911,583 km (0.059 R)
• M94: 79,155,375 km (0.114 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 404 - 13,111 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit