🌌 Stone's Star System Generator

Planet 1 - Gas Giant

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 785.9

Radius: 14.7

Gravity: 3.64 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 0.53 AU - 0.79 AU

Year: 370 Days

Day: 5.9 Hours

Environment

Temp: -156 °C

Axial Tilt: 8.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 65,354,879 km

• M1: 188,194 km (0.076 R)
• M2: 325,974 km (0.091 R)
• M3: 447,148 km (0.119 R)
• M4: 629,209 km (0.115 R)
• M5: 727,644 km (0.088 R)
• M6: 913,893 km (0.083 R)
• M7: 1,068,428 km (0.092 R)
• M8: 1,256,173 km (0.119 R)
• M9: 1,366,577 km (0.045 R)
• M10: 1,485,507 km (0.042 R)
• M11: 1,592,619 km (0.119 R)
• M12: 1,718,580 km (0.096 R)
• M13: 1,853,518 km (0.118 R)
• M14: 1,969,755 km (0.076 R)
• M15: 2,077,017 km (0.109 R)
• M16: 2,204,025 km (0.093 R)
• M17: 2,327,593 km (0.09 R)
• M18: 2,429,469 km (0.096 R)
• M19: 2,582,209 km (0.103 R)
• M20: 2,687,825 km (0.114 R)
• M21: 2,865,248 km (0.075 R)
• M22: 3,099,219 km (0.083 R)
• M23: 3,278,886 km (0.108 R)
• M24: 3,468,875 km (0.12 R)
• M25: 3,648,842 km (0.092 R)
• M26: 3,824,769 km (0.067 R)
• M27: 3,917,370 km (0.102 R)
• M28: 4,133,988 km (0.054 R)
• M29: 4,339,834 km (0.107 R)
• M30: 4,504,093 km (0.072 R)
• M31: 4,662,666 km (0.075 R)
• M32: 4,792,517 km (0.104 R)
• M33: 4,970,240 km (0.08 R)
• M34: 5,300,253 km (0.094 R)
• M35: 5,395,995 km (0.072 R)

Planet 2 - Gas Giant

Semi-Major Axis: 1.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 869

Radius: 13.5

Gravity: 4.77 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 1 AU - 1.46 AU

Year: 942 Days

Day: 14.9 Hours

Environment

Temp: -176 °C

Axial Tilt: 11.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (55)

Outer Limit: 65,354,879 km

• M1: 172,786 km (0.055 R)
• M2: 323,281 km (0.066 R)
• M3: 420,669 km (0.104 R)
• M4: 657,632 km (0.08 R)
• M5: 775,964 km (0.068 R)
• M6: 895,792 km (0.035 R)
• M7: 1,002,306 km (0.103 R)
• M8: 1,192,594 km (0.105 R)
• M9: 1,288,636 km (0.079 R)
• M10: 1,418,637 km (0.086 R)
• M11: 1,577,510 km (0.108 R)
• M12: 1,861,746 km (0.083 R)
• M13: 1,983,817 km (0.039 R)
• M14: 2,090,481 km (0.11 R)
• M15: 2,489,608 km (0.113 R)
• M16: 2,605,247 km (0.062 R)
• M17: 2,832,336 km (0.112 R)
• M18: 2,943,338 km (0.108 R)
• M19: 3,128,091 km (0.097 R)
• M20: 3,274,398 km (0.107 R)
• M21: 3,401,856 km (0.101 R)
• M22: 3,639,716 km (0.111 R)
• M23: 3,771,811 km (0.097 R)
• M24: 4,086,415 km (0.075 R)
• M25: 4,200,858 km (0.12 R)
• M26: 4,491,826 km (0.091 R)
• M27: 4,669,548 km (0.061 R)
• M28: 4,801,344 km (0.056 R)
• M29: 5,118,042 km (0.114 R)
• M30: 5,466,905 km (0.043 R)
• M31: 5,669,610 km (0.092 R)
• M32: 5,849,127 km (0.069 R)
• M33: 6,135,158 km (0.036 R)
• M34: 6,279,969 km (0.117 R)
• M35: 6,559,418 km (0.07 R)
• M36: 6,653,515 km (0.119 R)
• M37: 6,761,674 km (0.093 R)
• M38: 6,870,282 km (0.042 R)
• M39: 6,965,875 km (0.086 R)
• M40: 7,450,572 km (0.107 R)
• M41: 7,548,709 km (0.055 R)
• M42: 8,089,804 km (0.085 R)
• M43: 8,219,805 km (0.055 R)
• M44: 8,394,086 km (0.076 R)
• M45: 8,628,656 km (0.074 R)
• M46: 8,835,549 km (0.09 R)
• M47: 8,984,399 km (0.083 R)
• M48: 9,074,158 km (0.108 R)
• M49: 9,269,533 km (0.094 R)
• M50: 9,664,621 km (0.117 R)
• M51: 9,925,819 km (0.116 R)
• M52: 10,205,118 km (0.117 R)
• M53: 10,392,714 km (0.092 R)
• M54: 10,549,941 km (0.11 R)
• M55: 10,723,774 km (0.083 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 927.4

Radius: 11

Gravity: 7.66 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 1.42 AU - 1.92 AU

Year: 1490 Days

Day: 7 Hours

Environment

Temp: -205 °C

Axial Tilt: 0.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (65)

Outer Limit: 65,354,879 km

• M1: 141,968 km (0.113 R)
• M2: 343,028 km (0.112 R)
• M3: 428,000 km (0.117 R)
• M4: 515,664 km (0.094 R)
• M5: 617,690 km (0.092 R)
• M6: 789,278 km (0.109 R)
• M7: 877,242 km (0.069 R)
• M8: 1,108,371 km (0.09 R)
• M9: 1,199,177 km (0.109 R)
• M10: 1,311,674 km (0.044 R)
• M11: 1,388,567 km (0.078 R)
• M12: 1,477,279 km (0.114 R)
• M13: 1,883,587 km (0.081 R)
• M14: 2,060,411 km (0.091 R)
• M15: 2,219,733 km (0.091 R)
• M16: 2,371,276 km (0.114 R)
• M17: 2,502,473 km (0.112 R)
• M18: 2,574,879 km (0.098 R)
• M19: 2,796,882 km (0.088 R)
• M20: 2,948,424 km (0.113 R)
• M21: 3,220,094 km (0.074 R)
• M22: 3,568,059 km (0.118 R)
• M23: 3,857,830 km (0.097 R)
• M24: 3,942,203 km (0.1 R)
• M25: 4,012,813 km (0.099 R)
• M26: 4,227,486 km (0.095 R)
• M27: 4,504,841 km (0.049 R)
• M28: 4,638,282 km (0.106 R)
• M29: 4,863,726 km (0.075 R)
• M30: 5,092,760 km (0.086 R)
• M31: 5,451,047 km (0.073 R)
• M32: 5,609,322 km (0.079 R)
• M33: 5,769,092 km (0.062 R)
• M34: 6,709,016 km (0.09 R)
• M35: 6,947,176 km (0.113 R)
• M36: 7,032,895 km (0.106 R)
• M37: 7,101,710 km (0.055 R)
• M38: 7,205,531 km (0.078 R)
• M39: 7,554,842 km (0.073 R)
• M40: 7,927,640 km (0.095 R)
• M41: 8,017,249 km (0.056 R)
• M42: 8,306,422 km (0.084 R)
• M43: 9,138,036 km (0.103 R)
• M44: 9,611,663 km (0.085 R)
• M45: 9,803,298 km (0.06 R)
• M46: 10,034,876 km (0.05 R)
• M47: 10,307,592 km (0.051 R)
• M48: 10,503,715 km (0.089 R)
• M49: 10,959,839 km (0.045 R)
• M50: 11,099,863 km (0.06 R)
• M51: 11,200,243 km (0.071 R)
• M52: 11,381,855 km (0.114 R)
• M53: 11,584,710 km (0.116 R)
• M54: 11,747,771 km (0.107 R)
• M55: 11,829,751 km (0.085 R)
• M56: 12,138,371 km (0.092 R)
• M57: 12,241,893 km (0.097 R)
• M58: 12,512,366 km (0.068 R)
• M59: 12,932,287 km (0.054 R)
• M60: 13,421,023 km (0.078 R)
• M61: 13,742,958 km (0.094 R)
• M62: 13,872,510 km (0.101 R)
• M63: 14,350,774 km (0.097 R)
• M64: 14,702,180 km (0.063 R)
• M65: 14,856,714 km (0.108 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.32 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 785.6

Radius: 14

Gravity: 4.01 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 2.27 AU - 2.37 AU

Year: 2439 Days

Day: 14.7 Hours

Environment

Temp: -215 °C

Axial Tilt: 42.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (66)

Outer Limit: 65,354,879 km

• M1: 179,069 km (0.105 R)
• M2: 280,047 km (0.081 R)
• M3: 438,322 km (0.111 R)
• M4: 549,174 km (0.082 R)
• M5: 698,323 km (0.054 R)
• M6: 950,994 km (0.064 R)
• M7: 1,052,720 km (0.079 R)
• M8: 1,347,278 km (0.088 R)
• M9: 1,439,880 km (0.064 R)
• M10: 1,546,842 km (0.081 R)
• M11: 1,769,144 km (0.033 R)
• M12: 1,910,514 km (0.093 R)
• M13: 2,095,866 km (0.109 R)
• M14: 2,385,637 km (0.058 R)
• M15: 2,943,189 km (0.117 R)
• M16: 3,034,892 km (0.119 R)
• M17: 3,127,792 km (0.082 R)
• M18: 3,237,148 km (0.084 R)
• M19: 3,379,865 km (0.106 R)
• M20: 3,671,730 km (0.072 R)
• M21: 3,804,124 km (0.078 R)
• M22: 4,039,741 km (0.119 R)
• M23: 4,297,648 km (0.094 R)
• M24: 4,560,940 km (0.051 R)
• M25: 4,685,705 km (0.054 R)
• M26: 5,214,683 km (0.119 R)
• M27: 5,420,380 km (0.068 R)
• M28: 5,590,772 km (0.088 R)
• M29: 6,132,166 km (0.117 R)
• M30: 6,289,992 km (0.059 R)
• M31: 6,893,919 km (0.08 R)
• M32: 7,244,426 km (0.118 R)
• M33: 7,516,545 km (0.085 R)
• M34: 7,643,254 km (0.057 R)
• M35: 7,770,712 km (0.094 R)
• M36: 7,963,244 km (0.092 R)
• M37: 8,244,039 km (0.051 R)
• M38: 8,440,461 km (0.099 R)
• M39: 9,128,761 km (0.106 R)
• M40: 9,309,326 km (0.042 R)
• M41: 9,559,603 km (0.085 R)
• M42: 9,674,195 km (0.027 R)
• M43: 10,066,890 km (0.062 R)
• M44: 10,206,764 km (0.078 R)
• M45: 10,394,359 km (0.077 R)
• M46: 10,868,136 km (0.117 R)
• M47: 11,011,750 km (0.095 R)
• M48: 11,543,420 km (0.11 R)
• M49: 12,108,302 km (0.085 R)
• M50: 12,356,784 km (0.091 R)
• M51: 12,783,138 km (0.103 R)
• M52: 13,061,540 km (0.092 R)
• M53: 13,188,698 km (0.041 R)
• M54: 13,470,091 km (0.118 R)
• M55: 13,934,742 km (0.096 R)
• M56: 14,430,959 km (0.084 R)
• M57: 14,588,934 km (0.042 R)
• M58: 14,800,316 km (0.084 R)
• M59: 15,172,964 km (0.109 R)
• M60: 16,090,448 km (0.091 R)
• M61: 17,137,334 km (0.09 R)
• M62: 17,584,631 km (0.098 R)
• M63: 17,838,050 km (0.077 R)
• M64: 18,949,861 km (0.107 R)
• M65: 19,209,563 km (0.109 R)
• M66: 19,470,612 km (0.086 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 747.6

Radius: 12.3

Gravity: 4.94 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 2.9 AU - 3.54 AU

Year: 3988 Days

Day: 14.6 Hours

Environment

Temp: -207 °C

Axial Tilt: 39.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (76)

Outer Limit: 65,354,879 km

• M1: 159,621 km (0.112 R)
• M2: 327,021 km (0.05 R)
• M3: 765,941 km (0.071 R)
• M4: 1,083,537 km (0.104 R)
• M5: 1,299,856 km (0.096 R)
• M6: 1,384,827 km (0.097 R)
• M7: 1,486,404 km (0.096 R)
• M8: 1,666,670 km (0.064 R)
• M9: 1,806,843 km (0.12 R)
• M10: 2,183,381 km (0.102 R)
• M11: 3,085,606 km (0.107 R)
• M12: 3,239,991 km (0.106 R)
• M13: 3,718,405 km (0.086 R)
• M14: 4,456,221 km (0.107 R)
• M15: 4,741,804 km (0.087 R)
• M16: 5,540,507 km (0.102 R)
• M17: 5,847,930 km (0.063 R)
• M18: 6,528,900 km (0.119 R)
• M19: 6,678,199 km (0.105 R)
• M20: 7,209,421 km (0.085 R)
• M21: 7,286,463 km (0.104 R)
• M22: 7,363,806 km (0.058 R)
• M23: 7,545,268 km (0.099 R)
• M24: 7,780,735 km (0.082 R)
• M25: 8,285,927 km (0.056 R)
• M26: 8,583,327 km (0.118 R)
• M27: 8,746,987 km (0.039 R)
• M28: 9,694,092 km (0.102 R)
• M29: 9,978,926 km (0.103 R)
• M30: 10,208,708 km (0.09 R)
• M31: 10,382,391 km (0.1 R)
• M32: 10,498,629 km (0.084 R)
• M33: 10,644,487 km (0.03 R)
• M34: 11,414,168 km (0.078 R)
• M35: 11,534,145 km (0.105 R)
• M36: 11,745,228 km (0.119 R)
• M37: 12,201,801 km (0.115 R)
• M38: 12,293,803 km (0.097 R)
• M39: 12,664,208 km (0.117 R)
• M40: 12,757,258 km (0.104 R)
• M41: 13,289,676 km (0.093 R)
• M42: 13,669,805 km (0.092 R)
• M43: 13,765,398 km (0.107 R)
• M44: 14,473,295 km (0.078 R)
• M45: 14,570,683 km (0.12 R)
• M46: 14,668,370 km (0.1 R)
• M47: 14,798,969 km (0.12 R)
• M48: 15,824,014 km (0.115 R)
• M49: 15,924,394 km (0.101 R)
• M50: 16,058,583 km (0.11 R)
• M51: 16,429,736 km (0.049 R)
• M52: 16,599,380 km (0.027 R)
• M53: 17,318,048 km (0.051 R)
• M54: 18,012,032 km (0.112 R)
• M55: 18,362,391 km (0.111 R)
• M56: 18,963,325 km (0.086 R)
• M57: 19,176,951 km (0.092 R)
• M58: 19,930,775 km (0.1 R)
• M59: 20,293,250 km (0.077 R)
• M60: 20,438,809 km (0.088 R)
• M61: 20,621,318 km (0.114 R)
• M62: 20,877,729 km (0.117 R)
• M63: 21,061,585 km (0.059 R)
• M64: 21,541,944 km (0.069 R)
• M65: 22,025,893 km (0.091 R)
• M66: 22,363,086 km (0.073 R)
• M67: 22,551,131 km (0.076 R)
• M68: 22,739,774 km (0.059 R)
• M69: 22,966,714 km (0.037 R)
• M70: 23,118,406 km (0.035 R)
• M71: 23,270,547 km (0.087 R)
• M72: 24,074,486 km (0.084 R)
• M73: 25,277,851 km (0.059 R)
• M74: 25,906,611 km (0.114 R)
• M75: 26,302,148 km (0.063 R)
• M76: 26,739,722 km (0.118 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.19 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 69.1

Radius: 4.9

Gravity: 2.88 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 6.02 AU - 6.36 AU

Year: 10630 Days

Day: 22.4 Hours

Environment

Temp: -225 °C

Axial Tilt: 121.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 65,354,879 km

• M1: 187,446 km (0.071 R)
• M2: 282,142 km (0.113 R)
• M3: 351,854 km (0.11 R)
• M4: 401,670 km (0.112 R)
• M5: 655,837 km (0.06 R)
• M6: 697,276 km (0.086 R)
• M7: 895,044 km (0.105 R)
• M8: 953,238 km (0.105 R)
• M9: 1,223,561 km (0.077 R)
• M10: 2,228,260 km (0.119 R)
• M11: 2,323,554 km (0.027 R)
• M12: 2,584,602 km (0.077 R)
• M13: 3,241,038 km (0.077 R)
• M14: 3,349,197 km (0.094 R)
• M15: 4,316,198 km (0.088 R)
• M16: 5,193,589 km (0.098 R)
• M17: 6,325,447 km (0.102 R)
• M18: 8,109,401 km (0.075 R)
• M19: 8,280,990 km (0.099 R)
• M20: 8,753,121 km (0.045 R)
• M21: 8,954,480 km (0.105 R)
• M22: 9,853,264 km (0.098 R)
• M23: 10,036,372 km (0.051 R)
• M24: 10,699,838 km (0.092 R)
• M25: 11,487,022 km (0.094 R)
• M26: 13,174,037 km (0.084 R)
• M27: 13,724,109 km (0.105 R)
• M28: 14,846,841 km (0.088 R)
• M29: 14,936,749 km (0.062 R)
• M30: 15,328,247 km (0.062 R)
• M31: 15,388,834 km (0.09 R)
• M32: 15,449,421 km (0.053 R)
• M33: 15,814,888 km (0.12 R)
• M34: 16,740,899 km (0.057 R)
• M35: 17,875,001 km (0.082 R)
• M36: 19,984,780 km (0.066 R)
• M37: 20,649,592 km (0.042 R)
• M38: 22,137,643 km (0.036 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.55 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 418.4

Radius: 7.5

Gravity: 7.44 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 7.35 AU - 11.75 AU

Year: 20371 Days

Day: 21.6 Hours

Environment

Temp: -228 °C

Axial Tilt: 17.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (90)

Outer Limit: 65,354,879 km

• M1: 264,190 km (0.114 R)
• M2: 432,338 km (0.112 R)
• M3: 737,069 km (0.045 R)
• M4: 801,097 km (0.06 R)
• M5: 1,100,741 km (0.106 R)
• M6: 1,250,489 km (0.081 R)
• M7: 1,301,950 km (0.096 R)
• M8: 1,570,030 km (0.113 R)
• M9: 1,944,174 km (0.075 R)
• M10: 2,345,545 km (0.11 R)
• M11: 3,330,348 km (0.088 R)
• M12: 3,548,611 km (0.071 R)
• M13: 4,667,603 km (0.043 R)
• M14: 4,830,066 km (0.112 R)
• M15: 6,463,526 km (0.062 R)
• M16: 6,553,883 km (0.102 R)
• M17: 7,245,025 km (0.101 R)
• M18: 7,338,823 km (0.075 R)
• M19: 7,910,735 km (0.091 R)
• M20: 8,055,995 km (0.106 R)
• M21: 8,250,921 km (0.032 R)
• M22: 8,299,989 km (0.116 R)
• M23: 8,447,493 km (0.048 R)
• M24: 8,695,376 km (0.065 R)
• M25: 9,198,474 km (0.07 R)
• M26: 9,710,847 km (0.09 R)
• M27: 10,603,048 km (0.107 R)
• M28: 10,709,861 km (0.113 R)
• M29: 12,240,696 km (0.114 R)
• M30: 12,296,646 km (0.079 R)
• M31: 13,260,505 km (0.098 R)
• M32: 13,490,886 km (0.057 R)
• M33: 14,484,515 km (0.094 R)
• M34: 16,110,494 km (0.075 R)
• M35: 16,541,485 km (0.115 R)
• M36: 18,111,216 km (0.066 R)
• M37: 18,623,589 km (0.118 R)
• M38: 18,687,916 km (0.115 R)
• M39: 18,946,271 km (0.079 R)
• M40: 19,011,047 km (0.115 R)
• M41: 21,054,554 km (0.087 R)
• M42: 21,188,743 km (0.053 R)
• M43: 22,204,513 km (0.049 R)
• M44: 23,792,494 km (0.073 R)
• M45: 25,990,236 km (0.025 R)
• M46: 26,278,512 km (0.118 R)
• M47: 26,350,767 km (0.099 R)
• M48: 26,712,944 km (0.052 R)
• M49: 26,930,908 km (0.056 R)
• M50: 27,515,387 km (0.068 R)
• M51: 29,819,493 km (0.029 R)
• M52: 30,803,997 km (0.115 R)
• M53: 31,032,732 km (0.098 R)
• M54: 32,030,400 km (0.056 R)
• M55: 33,350,751 km (0.072 R)
• M56: 34,609,617 km (0.049 R)
• M57: 35,643,787 km (0.119 R)
• M58: 36,607,497 km (0.115 R)
• M59: 37,254,807 km (0.077 R)
• M60: 37,661,114 km (0.101 R)
• M61: 39,054,020 km (0.098 R)
• M62: 39,136,449 km (0.089 R)
• M63: 39,549,638 km (0.101 R)
• M64: 40,130,526 km (0.067 R)
• M65: 40,463,681 km (0.092 R)
• M66: 41,889,947 km (0.118 R)
• M67: 43,076,707 km (0.108 R)
• M68: 45,570,204 km (0.109 R)
• M69: 45,917,870 km (0.081 R)
• M70: 46,004,936 km (0.084 R)
• M71: 46,965,952 km (0.063 R)
• M72: 47,668,913 km (0.118 R)
• M73: 47,933,551 km (0.103 R)
• M74: 48,110,226 km (0.075 R)
• M75: 49,441,947 km (0.112 R)
• M76: 51,507,295 km (0.092 R)
• M77: 52,596,068 km (0.083 R)
• M78: 52,778,129 km (0.067 R)
• M79: 54,059,435 km (0.115 R)
• M80: 54,796,204 km (0.085 R)
• M81: 55,814,666 km (0.085 R)
• M82: 56,186,567 km (0.054 R)
• M83: 56,559,215 km (0.105 R)
• M84: 57,776,194 km (0.088 R)
• M85: 58,058,186 km (0.077 R)
• M86: 58,246,529 km (0.087 R)
• M87: 58,435,023 km (0.067 R)
• M88: 59,096,395 km (0.115 R)
• M89: 60,999,729 km (0.081 R)
• M90: 62,151,183 km (0.08 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 447 - 17,286 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit