🌌 Stone's Star System Generator

Planet 1 - Gas Giant

Semi-Major Axis: 0.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 560.8

Radius: 11.2

Gravity: 4.47 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 0.64 AU - 0.82 AU

Year: 409 Days

Day: 14.5 Hours

Environment

Temp: -141 °C

Axial Tilt: 39.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 39,659,770 km

• M1: 147,803 km (0.06 R)
• M2: 235,317 km (0.098 R)
• M3: 313,258 km (0.108 R)
• M4: 416,780 km (0.067 R)
• M5: 509,082 km (0.082 R)
• M6: 670,647 km (0.11 R)
• M7: 741,257 km (0.083 R)
• M8: 915,838 km (0.116 R)
• M9: 1,008,439 km (0.096 R)
• M10: 1,082,341 km (0.113 R)
• M11: 1,245,253 km (0.116 R)
• M12: 1,358,648 km (0.098 R)
• M13: 1,455,886 km (0.107 R)
• M14: 1,621,791 km (0.044 R)
• M15: 1,730,698 km (0.062 R)
• M16: 1,809,985 km (0.11 R)
• M17: 1,923,230 km (0.069 R)
• M18: 2,219,733 km (0.117 R)
• M19: 2,347,191 km (0.118 R)
• M20: 2,453,405 km (0.115 R)
• M21: 2,555,132 km (0.07 R)
• M22: 2,664,488 km (0.071 R)
• M23: 2,869,138 km (0.114 R)
• M24: 2,957,400 km (0.097 R)
• M25: 3,098,172 km (0.053 R)
• M26: 3,280,681 km (0.105 R)
• M27: 3,507,172 km (0.11 R)
• M28: 3,649,590 km (0.101 R)
• M29: 3,738,750 km (0.062 R)
• M30: 3,842,421 km (0.032 R)
• M31: 3,919,165 km (0.08 R)
• M32: 4,003,538 km (0.102 R)
• M33: 4,081,329 km (0.057 R)
• M34: 4,166,899 km (0.095 R)
• M35: 4,288,971 km (0.04 R)
• M36: 4,485,543 km (0.11 R)
• M37: 4,759,606 km (0.067 R)
• M38: 5,031,575 km (0.065 R)
• M39: 5,215,879 km (0.057 R)

Planet 2 - Gas Giant

Semi-Major Axis: 1.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 472.4

Radius: 12.3

Gravity: 3.12 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 1.34 AU - 1.74 AU

Year: 1254 Days

Day: 13.3 Hours

Environment

Temp: -173 °C

Axial Tilt: 37.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (57)

Outer Limit: 39,659,770 km

• M1: 174,132 km (0.06 R)
• M2: 252,820 km (0.119 R)
• M3: 334,351 km (0.095 R)
• M4: 411,993 km (0.098 R)
• M5: 503,546 km (0.086 R)
• M6: 642,972 km (0.068 R)
• M7: 905,217 km (0.103 R)
• M8: 991,684 km (0.089 R)
• M9: 1,144,723 km (0.11 R)
• M10: 1,276,219 km (0.101 R)
• M11: 1,382,284 km (0.072 R)
• M12: 1,546,992 km (0.062 R)
• M13: 1,710,352 km (0.078 R)
• M14: 1,794,127 km (0.108 R)
• M15: 1,888,075 km (0.064 R)
• M16: 2,036,625 km (0.071 R)
• M17: 2,373,669 km (0.105 R)
• M18: 2,515,488 km (0.099 R)
• M19: 2,631,127 km (0.06 R)
• M20: 2,738,688 km (0.084 R)
• M21: 2,917,757 km (0.067 R)
• M22: 3,131,831 km (0.086 R)
• M23: 3,256,596 km (0.111 R)
• M24: 3,511,062 km (0.099 R)
• M25: 3,971,973 km (0.033 R)
• M26: 4,084,620 km (0.057 R)
• M27: 4,164,206 km (0.11 R)
• M28: 4,267,130 km (0.083 R)
• M29: 4,487,487 km (0.064 R)
• M30: 4,711,585 km (0.097 R)
• M31: 4,878,985 km (0.058 R)
• M32: 5,011,977 km (0.095 R)
• M33: 5,331,219 km (0.119 R)
• M34: 5,468,401 km (0.055 R)
• M35: 5,707,907 km (0.055 R)
• M36: 6,002,615 km (0.093 R)
• M37: 6,184,526 km (0.027 R)
• M38: 6,341,753 km (0.082 R)
• M39: 6,421,040 km (0.11 R)
• M40: 6,714,102 km (0.079 R)
• M41: 6,848,890 km (0.097 R)
• M42: 7,382,954 km (0.119 R)
• M43: 7,662,104 km (0.035 R)
• M44: 7,817,087 km (0.1 R)
• M45: 7,958,906 km (0.068 R)
• M46: 8,173,280 km (0.086 R)
• M47: 8,505,686 km (0.093 R)
• M48: 8,593,201 km (0.088 R)
• M49: 8,798,449 km (0.109 R)
• M50: 8,886,862 km (0.114 R)
• M51: 9,094,503 km (0.059 R)
• M52: 9,288,681 km (0.087 R)
• M53: 9,575,012 km (0.069 R)
• M54: 10,171,907 km (0.068 R)
• M55: 10,264,957 km (0.076 R)
• M56: 10,389,273 km (0.072 R)
• M57: 10,561,011 km (0.101 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 930.5

Radius: 13.8

Gravity: 4.89 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 1.95 AU - 2.67 AU

Year: 2303 Days

Day: 6.6 Hours

Environment

Temp: -204 °C

Axial Tilt: 28.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (71)

Outer Limit: 39,659,770 km

• M1: 180,864 km (0.037 R)
• M2: 440,715 km (0.058 R)
• M3: 553,662 km (0.104 R)
• M4: 652,995 km (0.105 R)
• M5: 750,682 km (0.12 R)
• M6: 863,778 km (0.064 R)
• M7: 1,035,068 km (0.058 R)
• M8: 1,163,423 km (0.093 R)
• M9: 1,297,462 km (0.062 R)
• M10: 1,497,026 km (0.073 R)
• M11: 1,644,230 km (0.067 R)
• M12: 1,783,506 km (0.112 R)
• M13: 2,156,753 km (0.052 R)
• M14: 2,453,106 km (0.118 R)
• M15: 2,554,982 km (0.103 R)
• M16: 3,535,297 km (0.12 R)
• M17: 3,650,936 km (0.096 R)
• M18: 3,954,470 km (0.105 R)
• M19: 4,231,226 km (0.117 R)
• M20: 4,318,891 km (0.102 R)
• M21: 4,785,486 km (0.109 R)
• M22: 4,913,841 km (0.03 R)
• M23: 5,174,291 km (0.047 R)
• M24: 5,325,086 km (0.12 R)
• M25: 5,669,909 km (0.098 R)
• M26: 5,805,893 km (0.078 R)
• M27: 6,002,166 km (0.102 R)
• M28: 6,401,442 km (0.105 R)
• M29: 6,645,287 km (0.111 R)
• M30: 7,100,214 km (0.075 R)
• M31: 7,226,026 km (0.102 R)
• M32: 7,779,987 km (0.1 R)
• M33: 7,909,838 km (0.081 R)
• M34: 7,996,754 km (0.099 R)
• M35: 8,105,811 km (0.073 R)
• M36: 8,281,589 km (0.07 R)
• M37: 8,883,720 km (0.114 R)
• M38: 8,996,816 km (0.049 R)
• M39: 9,133,249 km (0.119 R)
• M40: 10,343,646 km (0.116 R)
• M41: 10,510,597 km (0.093 R)
• M42: 10,943,683 km (0.112 R)
• M43: 11,333,535 km (0.119 R)
• M44: 11,480,889 km (0.034 R)
• M45: 11,678,507 km (0.059 R)
• M46: 11,926,989 km (0.119 R)
• M47: 12,177,267 km (0.083 R)
• M48: 12,429,339 km (0.04 R)
• M49: 12,530,617 km (0.103 R)
• M50: 13,067,075 km (0.094 R)
• M51: 13,247,490 km (0.112 R)
• M52: 13,610,863 km (0.039 R)
• M53: 13,767,642 km (0.108 R)
• M54: 14,215,238 km (0.05 R)
• M55: 14,347,633 km (0.028 R)
• M56: 14,533,882 km (0.112 R)
• M57: 14,908,774 km (0.113 R)
• M58: 15,640,906 km (0.039 R)
• M59: 15,887,443 km (0.068 R)
• M60: 16,163,003 km (0.092 R)
• M61: 16,273,705 km (0.111 R)
• M62: 16,579,334 km (0.068 R)
• M63: 16,858,932 km (0.1 R)
• M64: 16,971,130 km (0.069 R)
• M65: 17,649,856 km (0.101 R)
• M66: 17,935,289 km (0.059 R)
• M67: 18,021,158 km (0.085 R)
• M68: 18,684,624 km (0.111 R)
• M69: 19,444,133 km (0.067 R)
• M70: 19,561,866 km (0.101 R)
• M71: 19,679,899 km (0.12 R)

Planet 4 - Ice Giant

Semi-Major Axis: 6.05 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 413.8

Radius: 4.9

Gravity: 17.23 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 5.34 AU - 6.76 AU

Year: 9762 Days

Day: 24.4 Hours

Environment

Temp: -212 °C

Axial Tilt: 25.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (94)

Outer Limit: 39,659,770 km

• M1: 237,561 km (0.063 R)
• M2: 310,565 km (0.077 R)
• M3: 415,882 km (0.062 R)
• M4: 617,091 km (0.08 R)
• M5: 660,774 km (0.103 R)
• M6: 736,022 km (0.119 R)
• M7: 846,275 km (0.079 R)
• M8: 878,738 km (0.084 R)
• M9: 1,454,390 km (0.055 R)
• M10: 1,757,476 km (0.107 R)
• M11: 1,799,363 km (0.032 R)
• M12: 2,079,859 km (0.053 R)
• M13: 2,281,966 km (0.08 R)
• M14: 2,705,178 km (0.034 R)
• M15: 2,826,951 km (0.105 R)
• M16: 3,101,463 km (0.081 R)
• M17: 3,410,532 km (0.072 R)
• M18: 3,837,784 km (0.12 R)
• M19: 4,002,341 km (0.099 R)
• M20: 5,646,572 km (0.09 R)
• M21: 5,991,395 km (0.029 R)
• M22: 6,375,412 km (0.047 R)
• M23: 6,440,039 km (0.111 R)
• M24: 6,701,386 km (0.1 R)
• M25: 6,932,814 km (0.073 R)
• M26: 7,677,064 km (0.074 R)
• M27: 8,058,837 km (0.038 R)
• M28: 8,375,536 km (0.08 R)
• M29: 8,696,573 km (0.118 R)
• M30: 8,804,433 km (0.096 R)
• M31: 9,203,710 km (0.066 R)
• M32: 9,240,361 km (0.06 R)
• M33: 9,497,819 km (0.071 R)
• M34: 9,869,869 km (0.12 R)
• M35: 11,130,830 km (0.099 R)
• M36: 11,879,717 km (0.105 R)
• M37: 12,199,856 km (0.037 R)
• M38: 12,644,610 km (0.091 R)
• M39: 13,301,046 km (0.057 R)
• M40: 13,466,950 km (0.041 R)
• M41: 14,221,671 km (0.076 R)
• M42: 14,433,801 km (0.094 R)
• M43: 14,947,071 km (0.105 R)
• M44: 15,466,325 km (0.109 R)
• M45: 15,991,414 km (0.083 R)
• M46: 16,035,545 km (0.029 R)
• M47: 16,256,202 km (0.031 R)
• M48: 16,389,195 km (0.062 R)
• M49: 16,611,497 km (0.1 R)
• M50: 17,149,302 km (0.048 R)
• M51: 17,284,538 km (0.034 R)
• M52: 17,738,268 km (0.038 R)
• M53: 17,920,778 km (0.12 R)
• M54: 18,103,886 km (0.098 R)
• M55: 18,425,970 km (0.103 R)
• M56: 19,450,416 km (0.042 R)
• M57: 20,111,938 km (0.108 R)
• M58: 20,349,948 km (0.116 R)
• M59: 20,445,541 km (0.107 R)
• M60: 20,541,134 km (0.042 R)
• M61: 21,069,663 km (0.083 R)
• M62: 21,554,211 km (0.1 R)
• M63: 22,880,396 km (0.101 R)
• M64: 25,199,911 km (0.094 R)
• M65: 25,251,223 km (0.085 R)
• M66: 26,024,046 km (0.08 R)
• M67: 26,231,538 km (0.071 R)
• M68: 26,335,508 km (0.077 R)
• M69: 27,382,095 km (0.066 R)
• M70: 27,804,709 km (0.12 R)
• M71: 28,122,904 km (0.102 R)
• M72: 28,602,664 km (0.104 R)
• M73: 28,656,071 km (0.099 R)
• M74: 28,816,739 km (0.112 R)
• M75: 28,923,851 km (0.077 R)
• M76: 30,275,467 km (0.055 R)
• M77: 30,438,978 km (0.113 R)
• M78: 30,876,701 km (0.096 R)
• M79: 31,426,623 km (0.074 R)
• M80: 32,424,590 km (0.11 R)
• M81: 33,376,781 km (0.036 R)
• M82: 33,602,075 km (0.057 R)
• M83: 33,997,762 km (0.086 R)
• M84: 34,281,250 km (0.103 R)
• M85: 34,451,642 km (0.081 R)
• M86: 34,565,486 km (0.058 R)
• M87: 34,850,619 km (0.063 R)
• M88: 34,907,766 km (0.045 R)
• M89: 36,984,334 km (0.083 R)
• M90: 37,159,213 km (0.084 R)
• M91: 37,568,214 km (0.12 R)
• M92: 37,626,856 km (0.092 R)
• M93: 37,861,276 km (0.08 R)
• M94: 38,745,250 km (0.095 R)

Planet 5 - Ice Giant

Semi-Major Axis: 6.33 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 617.4

Radius: 5.3

Gravity: 21.98 G

Time & Orbit

Eccentricity (e): 0.101

Orbit Range: 5.69 AU - 6.97 AU

Year: 10448 Days

Day: 22.3 Hours

Environment

Temp: -219 °C

Axial Tilt: 24.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (89)

Outer Limit: 39,659,770 km

• M1: 70,161 km (0.048 R)
• M2: 162,314 km (0.086 R)
• M3: 377,585 km (0.036 R)
• M4: 461,210 km (0.098 R)
• M5: 630,405 km (0.046 R)
• M6: 800,797 km (0.111 R)
• M7: 836,701 km (0.072 R)
• M8: 1,372,710 km (0.075 R)
• M9: 1,593,965 km (0.1 R)
• M10: 1,755,531 km (0.032 R)
• M11: 1,850,376 km (0.109 R)
• M12: 1,971,102 km (0.106 R)
• M13: 2,169,917 km (0.108 R)
• M14: 2,532,991 km (0.12 R)
• M15: 2,694,557 km (0.109 R)
• M16: 3,169,979 km (0.098 R)
• M17: 3,256,596 km (0.104 R)
• M18: 3,610,993 km (0.067 R)
• M19: 3,701,500 km (0.088 R)
• M20: 4,452,332 km (0.105 R)
• M21: 5,628,321 km (0.104 R)
• M22: 6,088,334 km (0.107 R)
• M23: 6,341,005 km (0.075 R)
• M24: 6,819,269 km (0.063 R)
• M25: 7,043,965 km (0.067 R)
• M26: 7,654,923 km (0.108 R)
• M27: 8,203,498 km (0.095 R)
• M28: 8,322,578 km (0.115 R)
• M29: 8,522,591 km (0.116 R)
• M30: 8,845,722 km (0.091 R)
• M31: 9,379,338 km (0.111 R)
• M32: 9,839,052 km (0.041 R)
• M33: 10,050,434 km (0.079 R)
• M34: 10,563,854 km (0.112 R)
• M35: 11,261,728 km (0.084 R)
• M36: 13,256,167 km (0.106 R)
• M37: 13,536,363 km (0.057 R)
• M38: 13,630,311 km (0.061 R)
• M39: 13,771,531 km (0.11 R)
• M40: 13,960,473 km (0.078 R)
• M41: 15,503,575 km (0.089 R)
• M42: 15,848,249 km (0.103 R)
• M43: 16,395,029 km (0.087 R)
• M44: 16,796,550 km (0.113 R)
• M45: 16,998,507 km (0.093 R)
• M46: 17,099,785 km (0.057 R)
• M47: 17,917,337 km (0.077 R)
• M48: 19,484,225 km (0.117 R)
• M49: 20,123,158 km (0.105 R)
• M50: 21,148,950 km (0.074 R)
• M51: 21,476,270 km (0.096 R)
• M52: 23,082,353 km (0.068 R)
• M53: 23,306,899 km (0.097 R)
• M54: 23,419,547 km (0.08 R)
• M55: 24,098,571 km (0.112 R)
• M56: 24,212,415 km (0.091 R)
• M57: 24,383,406 km (0.089 R)
• M58: 24,726,733 km (0.098 R)
• M59: 25,014,110 km (0.111 R)
• M60: 25,708,095 km (0.093 R)
• M61: 26,408,512 km (0.082 R)
• M62: 26,584,589 km (0.09 R)
• M63: 26,996,881 km (0.117 R)
• M64: 28,186,632 km (0.088 R)
• M65: 28,366,599 km (0.106 R)
• M66: 28,486,726 km (0.086 R)
• M67: 28,788,016 km (0.098 R)
• M68: 29,575,948 km (0.118 R)
• M69: 29,636,834 km (0.085 R)
• M70: 31,421,238 km (0.047 R)
• M71: 31,794,783 km (0.103 R)
• M72: 34,835,510 km (0.117 R)
• M73: 35,286,547 km (0.117 R)
• M74: 35,609,978 km (0.099 R)
• M75: 35,999,381 km (0.102 R)
• M76: 36,782,526 km (0.08 R)
• M77: 37,439,261 km (0.089 R)
• M78: 38,431,693 km (0.048 R)
• M79: 38,564,685 km (0.053 R)
• M80: 38,831,119 km (0.064 R)
• M81: 39,432,802 km (0.119 R)
• M82: 40,510,206 km (0.103 R)
• M83: 42,075,598 km (0.101 R)
• M84: 42,144,114 km (0.105 R)
• M85: 42,281,295 km (0.099 R)
• M86: 43,730,150 km (0.118 R)
• M87: 44,286,355 km (0.062 R)
• M88: 47,173,594 km (0.043 R)
• M89: 47,244,803 km (0.12 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.84 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 187.1

Radius: 7.6

Gravity: 3.24 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 7.53 AU - 8.15 AU

Year: 14401 Days

Day: 21.4 Hours

Environment

Temp: -219 °C

Axial Tilt: 39.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (87)

Outer Limit: 39,659,770 km

• M1: 108,458 km (0.065 R)
• M2: 167,250 km (0.079 R)
• M3: 289,921 km (0.113 R)
• M4: 422,913 km (0.114 R)
• M5: 858,841 km (0.084 R)
• M6: 1,162,824 km (0.053 R)
• M7: 1,538,016 km (0.097 R)
• M8: 1,597,406 km (0.089 R)
• M9: 1,885,232 km (0.103 R)
• M10: 1,948,961 km (0.098 R)
• M11: 2,078,812 km (0.09 R)
• M12: 2,324,452 km (0.116 R)
• M13: 2,462,381 km (0.11 R)
• M14: 2,532,393 km (0.115 R)
• M15: 3,319,726 km (0.106 R)
• M16: 3,423,098 km (0.06 R)
• M17: 4,289,121 km (0.104 R)
• M18: 4,401,917 km (0.071 R)
• M19: 4,487,188 km (0.057 R)
• M20: 4,746,441 km (0.117 R)
• M21: 4,833,956 km (0.092 R)
• M22: 5,279,458 km (0.071 R)
• M23: 5,831,475 km (0.104 R)
• M24: 5,893,857 km (0.074 R)
• M25: 6,082,649 km (0.035 R)
• M26: 6,433,905 km (0.083 R)
• M27: 6,498,532 km (0.105 R)
• M28: 6,563,307 km (0.062 R)
• M29: 6,890,478 km (0.051 R)
• M30: 7,323,863 km (0.092 R)
• M31: 8,357,285 km (0.105 R)
• M32: 8,427,895 km (0.082 R)
• M33: 9,216,575 km (0.038 R)
• M34: 9,399,234 km (0.042 R)
• M35: 9,767,843 km (0.093 R)
• M36: 10,066,291 km (0.11 R)
• M37: 10,405,579 km (0.088 R)
• M38: 10,940,840 km (0.073 R)
• M39: 12,478,706 km (0.043 R)
• M40: 13,006,188 km (0.084 R)
• M41: 13,706,905 km (0.098 R)
• M42: 14,082,994 km (0.091 R)
• M43: 14,845,046 km (0.076 R)
• M44: 15,016,335 km (0.083 R)
• M45: 15,403,794 km (0.073 R)
• M46: 15,620,561 km (0.118 R)
• M47: 16,188,883 km (0.102 R)
• M48: 16,674,927 km (0.09 R)
• M49: 17,571,018 km (0.031 R)
• M50: 18,253,483 km (0.117 R)
• M51: 18,990,702 km (0.034 R)
• M52: 20,304,470 km (0.051 R)
• M53: 20,637,475 km (0.055 R)
• M54: 22,182,671 km (0.049 R)
• M55: 22,673,053 km (0.112 R)
• M56: 22,919,740 km (0.114 R)
• M57: 23,266,358 km (0.115 R)
• M58: 23,914,865 km (0.101 R)
• M59: 24,316,835 km (0.035 R)
• M60: 24,417,813 km (0.071 R)
• M61: 24,873,339 km (0.106 R)
• M62: 24,974,916 km (0.108 R)
• M63: 25,229,681 km (0.109 R)
• M64: 25,434,032 km (0.067 R)
• M65: 25,587,519 km (0.041 R)
• M66: 27,088,434 km (0.105 R)
• M67: 28,087,150 km (0.083 R)
• M68: 28,991,020 km (0.101 R)
• M69: 29,365,912 km (0.07 R)
• M70: 29,419,618 km (0.12 R)
• M71: 30,609,071 km (0.087 R)
• M72: 31,154,953 km (0.116 R)
• M73: 32,756,099 km (0.115 R)
• M74: 33,314,399 km (0.08 R)
• M75: 33,875,989 km (0.069 R)
• M76: 33,932,238 km (0.061 R)
• M77: 34,157,831 km (0.092 R)
• M78: 34,270,778 km (0.051 R)
• M79: 34,837,604 km (0.091 R)
• M80: 35,521,715 km (0.074 R)
• M81: 35,750,899 km (0.045 R)
• M82: 36,037,828 km (0.118 R)
• M83: 36,383,249 km (0.098 R)
• M84: 36,729,718 km (0.105 R)
• M85: 36,903,401 km (0.03 R)
• M86: 38,478,816 km (0.081 R)
• M87: 39,363,389 km (0.11 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 334 - 14,317 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit