🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 1.02 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.67

Radius: 1.68

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.145

Orbit Range: 0.87 AU - 1.17 AU

Year: 369 Days

Day: 39.6 Hours

Environment

Temp: 29 °C

Axial Tilt: 5.5 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (1)

Outer Limit: 79,002,236 km

• M1: 82,428 km (0.072 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.03 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.92

Radius: 1.73

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.22

Orbit Range: 0.8 AU - 1.26 AU

Year: 374 Days

Day: 18.2 Hours

Environment

Temp: 51 °C

Axial Tilt: 142.5 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Asteroid Belt

Center: 4.64 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 3 - Gas Giant

Semi-Major Axis: 8.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 619.9

Radius: 12.6

Gravity: 3.9 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 6.64 AU - 9.86 AU

Year: 8487 Days

Day: 11 Hours

Environment

Temp: -154 °C

Axial Tilt: 0.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (76)

Outer Limit: 79,002,236 km

• M1: 175,927 km (0.115 R)
• M2: 273,764 km (0.032 R)
• M3: 451,337 km (0.096 R)
• M4: 578,645 km (0.105 R)
• M5: 705,354 km (0.085 R)
• M6: 858,692 km (0.053 R)
• M7: 1,237,474 km (0.118 R)
• M8: 1,446,462 km (0.075 R)
• M9: 1,708,557 km (0.098 R)
• M10: 1,877,752 km (0.061 R)
• M11: 2,075,072 km (0.083 R)
• M12: 2,233,347 km (0.095 R)
• M13: 2,756,939 km (0.105 R)
• M14: 2,931,669 km (0.107 R)
• M15: 3,058,828 km (0.074 R)
• M16: 3,832,249 km (0.098 R)
• M17: 4,284,333 km (0.106 R)
• M18: 4,783,392 km (0.082 R)
• M19: 5,146,915 km (0.102 R)
• M20: 5,425,616 km (0.07 R)
• M21: 5,519,563 km (0.106 R)
• M22: 5,741,117 km (0.105 R)
• M23: 6,555,977 km (0.098 R)
• M24: 6,824,356 km (0.087 R)
• M25: 6,926,082 km (0.078 R)
• M26: 7,096,474 km (0.087 R)
• M27: 7,303,069 km (0.087 R)
• M28: 8,766,585 km (0.099 R)
• M29: 10,124,634 km (0.109 R)
• M30: 10,946,974 km (0.114 R)
• M31: 11,386,193 km (0.116 R)
• M32: 11,507,068 km (0.092 R)
• M33: 11,709,325 km (0.068 R)
• M34: 11,912,778 km (0.116 R)
• M35: 11,994,608 km (0.053 R)
• M36: 13,668,309 km (0.094 R)
• M37: 14,619,751 km (0.097 R)
• M38: 14,883,043 km (0.042 R)
• M39: 15,726,925 km (0.117 R)
• M40: 15,816,684 km (0.056 R)
• M41: 15,906,592 km (0.081 R)
• M42: 16,041,828 km (0.079 R)
• M43: 16,358,826 km (0.092 R)
• M44: 16,815,100 km (0.104 R)
• M45: 16,998,806 km (0.042 R)
• M46: 17,368,313 km (0.098 R)
• M47: 17,693,838 km (0.106 R)
• M48: 18,021,307 km (0.046 R)
• M49: 18,682,380 km (0.107 R)
• M50: 18,825,097 km (0.075 R)
• M51: 20,028,163 km (0.093 R)
• M52: 21,554,510 km (0.095 R)
• M53: 22,004,650 km (0.102 R)
• M54: 22,105,030 km (0.091 R)
• M55: 22,965,068 km (0.086 R)
• M56: 23,784,416 km (0.084 R)
• M57: 24,145,994 km (0.096 R)
• M58: 24,665,547 km (0.117 R)
• M59: 25,715,874 km (0.079 R)
• M60: 26,353,011 km (0.061 R)
• M61: 26,941,679 km (0.064 R)
• M62: 27,805,756 km (0.06 R)
• M63: 28,132,029 km (0.099 R)
• M64: 28,898,419 km (0.118 R)
• M65: 29,284,232 km (0.069 R)
• M66: 30,116,744 km (0.114 R)
• M67: 30,788,289 km (0.083 R)
• M68: 32,374,475 km (0.103 R)
• M69: 33,871,052 km (0.099 R)
• M70: 34,219,615 km (0.057 R)
• M71: 35,390,069 km (0.045 R)
• M72: 36,573,687 km (0.072 R)
• M73: 37,110,445 km (0.05 R)
• M74: 37,650,044 km (0.065 R)
• M75: 37,890,597 km (0.094 R)
• M76: 39,588,982 km (0.11 R)

Planet 4 - Gas Giant

Semi-Major Axis: 8.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 982.9

Radius: 9.6

Gravity: 10.67 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 8.27 AU - 9.11 AU

Year: 9175 Days

Day: 11.7 Hours

Environment

Temp: -156 °C

Axial Tilt: 174.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (88)

Outer Limit: 79,002,236 km

• M1: 143,016 km (0.083 R)
• M2: 222,452 km (0.101 R)
• M3: 526,884 km (0.077 R)
• M4: 621,878 km (0.115 R)
• M5: 688,749 km (0.113 R)
• M6: 1,022,501 km (0.11 R)
• M7: 1,315,264 km (0.05 R)
• M8: 1,517,371 km (0.051 R)
• M9: 1,587,084 km (0.073 R)
• M10: 1,901,838 km (0.115 R)
• M11: 2,506,512 km (0.115 R)
• M12: 2,787,158 km (0.053 R)
• M13: 3,197,206 km (0.045 R)
• M14: 3,532,754 km (0.112 R)
• M15: 4,073,700 km (0.106 R)
• M16: 4,270,720 km (0.098 R)
• M17: 4,471,181 km (0.09 R)
• M18: 4,743,000 km (0.068 R)
• M19: 5,125,821 km (0.096 R)
• M20: 5,231,886 km (0.098 R)
• M21: 5,847,182 km (0.119 R)
• M22: 7,383,852 km (0.114 R)
• M23: 8,529,622 km (0.081 R)
• M24: 8,655,733 km (0.116 R)
• M25: 9,949,904 km (0.103 R)
• M26: 10,038,316 km (0.087 R)
• M27: 11,349,841 km (0.094 R)
• M28: 11,534,893 km (0.047 R)
• M29: 11,721,143 km (0.082 R)
• M30: 12,143,458 km (0.065 R)
• M31: 12,380,421 km (0.114 R)
• M32: 13,051,666 km (0.097 R)
• M33: 13,294,314 km (0.101 R)
• M34: 13,440,621 km (0.046 R)
• M35: 13,784,097 km (0.111 R)
• M36: 13,882,682 km (0.094 R)
• M37: 14,229,899 km (0.106 R)
• M38: 14,730,753 km (0.077 R)
• M39: 14,932,859 km (0.081 R)
• M40: 15,288,454 km (0.059 R)
• M41: 15,801,574 km (0.106 R)
• M42: 16,634,086 km (0.041 R)
• M43: 17,267,933 km (0.084 R)
• M44: 17,427,554 km (0.075 R)
• M45: 17,641,329 km (0.094 R)
• M46: 18,941,484 km (0.089 R)
• M47: 20,779,294 km (0.109 R)
• M48: 22,615,159 km (0.098 R)
• M49: 22,789,889 km (0.034 R)
• M50: 23,847,845 km (0.116 R)
• M51: 24,263,578 km (0.108 R)
• M52: 24,741,693 km (0.105 R)
• M53: 25,222,949 km (0.094 R)
• M54: 25,464,699 km (0.108 R)
• M55: 26,072,515 km (0.097 R)
• M56: 26,133,551 km (0.104 R)
• M57: 26,255,773 km (0.076 R)
• M58: 26,316,958 km (0.058 R)
• M59: 26,808,088 km (0.094 R)
• M60: 27,240,426 km (0.088 R)
• M61: 27,675,008 km (0.105 R)
• M62: 29,119,076 km (0.099 R)
• M63: 30,909,912 km (0.118 R)
• M64: 31,753,494 km (0.119 R)
• M65: 31,949,168 km (0.095 R)
• M66: 32,867,999 km (0.067 R)
• M67: 34,530,181 km (0.104 R)
• M68: 35,337,710 km (0.029 R)
• M69: 35,540,565 km (0.116 R)
• M70: 35,608,183 km (0.084 R)
• M71: 38,282,095 km (0.096 R)
• M72: 40,877,917 km (0.095 R)
• M73: 41,019,886 km (0.109 R)
• M74: 41,589,255 km (0.075 R)
• M75: 42,304,632 km (0.064 R)
• M76: 43,024,198 km (0.117 R)
• M77: 43,602,693 km (0.097 R)
• M78: 43,747,653 km (0.043 R)
• M79: 44,621,155 km (0.079 R)
• M80: 45,573,944 km (0.049 R)
• M81: 46,237,560 km (0.058 R)
• M82: 46,385,513 km (0.045 R)
• M83: 46,681,716 km (0.045 R)
• M84: 47,723,516 km (0.115 R)
• M85: 48,172,459 km (0.081 R)
• M86: 48,247,408 km (0.083 R)
• M87: 49,225,179 km (0.047 R)
• M88: 51,047,581 km (0.091 R)

Planet 5 - Gas Giant

Semi-Major Axis: 10.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 259.9

Radius: 8.3

Gravity: 3.77 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 9.56 AU - 11.68 AU

Year: 12395 Days

Day: 5.9 Hours

Environment

Temp: -176 °C

Axial Tilt: 5.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (70)

Outer Limit: 79,002,236 km

• M1: 224,696 km (0.054 R)
• M2: 300,393 km (0.107 R)
• M3: 364,720 km (0.104 R)
• M4: 576,849 km (0.098 R)
• M5: 1,006,943 km (0.093 R)
• M6: 1,235,978 km (0.05 R)
• M7: 1,328,429 km (0.105 R)
• M8: 1,620,295 km (0.028 R)
• M9: 2,084,198 km (0.111 R)
• M10: 2,285,556 km (0.104 R)
• M11: 2,377,260 km (0.09 R)
• M12: 2,828,896 km (0.109 R)
• M13: 3,946,691 km (0.113 R)
• M14: 4,537,303 km (0.106 R)
• M15: 4,653,092 km (0.098 R)
• M16: 5,035,764 km (0.115 R)
• M17: 5,095,453 km (0.109 R)
• M18: 5,706,411 km (0.09 R)
• M19: 5,768,793 km (0.09 R)
• M20: 6,052,281 km (0.078 R)
• M21: 6,179,738 km (0.099 R)
• M22: 6,502,421 km (0.09 R)
• M23: 7,332,839 km (0.071 R)
• M24: 7,605,705 km (0.107 R)
• M25: 7,881,863 km (0.113 R)
• M26: 8,302,233 km (0.05 R)
• M27: 8,765,837 km (0.062 R)
• M28: 9,942,873 km (0.028 R)
• M29: 10,206,913 km (0.064 R)
• M30: 10,780,621 km (0.087 R)
• M31: 13,013,070 km (0.07 R)
• M32: 13,467,997 km (0.089 R)
• M33: 13,676,537 km (0.084 R)
• M34: 13,928,160 km (0.083 R)
• M35: 14,606,586 km (0.089 R)
• M36: 14,820,811 km (0.089 R)
• M37: 14,949,764 km (0.118 R)
• M38: 17,517,013 km (0.058 R)
• M39: 17,744,701 km (0.09 R)
• M40: 17,927,510 km (0.108 R)
• M41: 18,019,064 km (0.093 R)
• M42: 18,340,998 km (0.109 R)
• M43: 18,433,450 km (0.047 R)
• M44: 18,664,878 km (0.103 R)
• M45: 18,897,502 km (0.052 R)
• M46: 19,084,200 km (0.105 R)
• M47: 20,984,542 km (0.072 R)
• M48: 21,081,182 km (0.113 R)
• M49: 21,810,322 km (0.083 R)
• M50: 22,795,424 km (0.032 R)
• M51: 23,193,504 km (0.048 R)
• M52: 24,198,802 km (0.116 R)
• M53: 25,423,859 km (0.062 R)
• M54: 26,095,853 km (0.068 R)
• M55: 26,616,752 km (0.099 R)
• M56: 28,040,326 km (0.055 R)
• M57: 28,093,433 km (0.034 R)
• M58: 29,218,409 km (0.112 R)
• M59: 30,194,236 km (0.051 R)
• M60: 30,905,723 km (0.115 R)
• M61: 32,904,500 km (0.086 R)
• M62: 33,580,084 km (0.103 R)
• M63: 33,749,579 km (0.034 R)
• M64: 34,146,462 km (0.111 R)
• M65: 35,576,318 km (0.117 R)
• M66: 35,980,233 km (0.12 R)
• M67: 36,443,687 km (0.062 R)
• M68: 38,258,010 km (0.064 R)
• M69: 38,553,316 km (0.108 R)
• M70: 39,265,402 km (0.034 R)

Planet 6 - Gas Giant

Semi-Major Axis: 11.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 733

Radius: 8.3

Gravity: 10.64 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 11.16 AU - 12.24 AU

Year: 14334 Days

Day: 7.9 Hours

Environment

Temp: -189 °C

Axial Tilt: 23 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (95)

Outer Limit: 79,002,236 km

• M1: 195,375 km (0.104 R)
• M2: 459,415 km (0.081 R)
• M3: 638,783 km (0.09 R)
• M4: 1,231,041 km (0.115 R)
• M5: 1,432,699 km (0.104 R)
• M6: 1,484,908 km (0.07 R)
• M7: 1,537,717 km (0.068 R)
• M8: 2,986,123 km (0.101 R)
• M9: 3,610,096 km (0.065 R)
• M10: 4,048,268 km (0.067 R)
• M11: 4,426,152 km (0.074 R)
• M12: 4,619,433 km (0.095 R)
• M13: 4,776,062 km (0.113 R)
• M14: 6,966,773 km (0.069 R)
• M15: 7,327,902 km (0.105 R)
• M16: 7,741,540 km (0.102 R)
• M17: 8,068,561 km (0.076 R)
• M18: 8,257,503 km (0.048 R)
• M19: 8,352,498 km (0.084 R)
• M20: 9,027,633 km (0.116 R)
• M21: 9,371,858 km (0.05 R)
• M22: 10,635,810 km (0.104 R)
• M23: 12,222,146 km (0.114 R)
• M24: 12,493,666 km (0.089 R)
• M25: 13,655,593 km (0.093 R)
• M26: 14,563,951 km (0.093 R)
• M27: 15,433,264 km (0.104 R)
• M28: 15,785,567 km (0.105 R)
• M29: 15,962,841 km (0.102 R)
• M30: 16,140,713 km (0.074 R)
• M31: 16,438,562 km (0.087 R)
• M32: 17,648,360 km (0.091 R)
• M33: 18,949,113 km (0.047 R)
• M34: 19,452,810 km (0.08 R)
• M35: 20,409,039 km (0.112 R)
• M36: 20,537,693 km (0.118 R)
• M37: 20,602,170 km (0.096 R)
• M38: 20,795,750 km (0.108 R)
• M39: 21,055,003 km (0.081 R)
• M40: 21,642,174 km (0.077 R)
• M41: 22,566,091 km (0.098 R)
• M42: 22,765,804 km (0.064 R)
• M43: 23,772,897 km (0.115 R)
• M44: 24,315,937 km (0.054 R)
• M45: 24,863,166 km (0.07 R)
• M46: 24,931,832 km (0.117 R)
• M47: 27,092,174 km (0.063 R)
• M48: 27,659,300 km (0.104 R)
• M49: 27,730,508 km (0.083 R)
• M50: 28,373,779 km (0.08 R)
• M51: 30,040,000 km (0.116 R)
• M52: 30,113,154 km (0.09 R)
• M53: 30,553,420 km (0.114 R)
• M54: 31,440,236 km (0.058 R)
• M55: 31,886,936 km (0.072 R)
• M56: 32,111,033 km (0.092 R)
• M57: 32,335,580 km (0.062 R)
• M58: 32,485,626 km (0.116 R)
• M59: 32,560,725 km (0.086 R)
• M60: 32,786,468 km (0.099 R)
• M61: 33,466,540 km (0.12 R)
• M62: 33,694,228 km (0.096 R)
• M63: 34,610,365 km (0.094 R)
• M64: 34,840,596 km (0.116 R)
• M65: 34,994,383 km (0.055 R)
• M66: 35,611,923 km (0.119 R)
• M67: 37,093,091 km (0.065 R)
• M68: 37,171,481 km (0.113 R)
• M69: 39,312,076 km (0.041 R)
• M70: 39,712,849 km (0.112 R)
• M71: 40,842,163 km (0.093 R)
• M72: 43,214,935 km (0.111 R)
• M73: 45,800,435 km (0.085 R)
• M74: 45,884,659 km (0.114 R)
• M75: 47,154,296 km (0.103 R)
• M76: 47,750,892 km (0.058 R)
• M77: 48,779,228 km (0.119 R)
• M78: 49,296,089 km (0.091 R)
• M79: 49,901,511 km (0.062 R)
• M80: 50,248,429 km (0.114 R)
• M81: 50,770,525 km (0.074 R)
• M82: 51,732,290 km (0.069 R)
• M83: 51,819,954 km (0.06 R)
• M84: 51,995,582 km (0.073 R)
• M85: 55,011,176 km (0.098 R)
• M86: 56,811,287 km (0.097 R)
• M87: 57,173,613 km (0.114 R)
• M88: 57,991,764 km (0.082 R)
• M89: 58,905,209 km (0.036 R)
• M90: 59,272,023 km (0.108 R)
• M91: 59,823,590 km (0.113 R)
• M92: 60,192,199 km (0.085 R)
• M93: 60,839,210 km (0.069 R)
• M94: 61,209,914 km (0.108 R)
• M95: 62,233,163 km (0.098 R)

Planet 7 - Ice Giant

Semi-Major Axis: 14.34 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 810.8

Radius: 6.5

Gravity: 19.19 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 13.36 AU - 15.32 AU

Year: 19449 Days

Day: 15.4 Hours

Environment

Temp: -189 °C

Axial Tilt: 20 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (91)

Outer Limit: 79,002,236 km

• M1: 93,798 km (0.12 R)
• M2: 211,531 km (0.084 R)
• M3: 392,844 km (0.107 R)
• M4: 532,568 km (0.111 R)
• M5: 665,411 km (0.077 R)
• M6: 1,299,258 km (0.044 R)
• M7: 2,176,350 km (0.114 R)
• M8: 2,689,620 km (0.117 R)
• M9: 3,158,609 km (0.09 R)
• M10: 3,320,624 km (0.112 R)
• M11: 3,865,759 km (0.069 R)
• M12: 4,214,920 km (0.092 R)
• M13: 5,759,668 km (0.053 R)
• M14: 8,729,485 km (0.119 R)
• M15: 9,244,251 km (0.115 R)
• M16: 9,592,963 km (0.067 R)
• M17: 9,946,014 km (0.033 R)
• M18: 10,969,114 km (0.069 R)
• M19: 11,091,785 km (0.101 R)
• M20: 11,773,951 km (0.099 R)
• M21: 12,984,198 km (0.107 R)
• M22: 13,967,205 km (0.057 R)
• M23: 15,246,417 km (0.082 R)
• M24: 15,520,629 km (0.087 R)
• M25: 15,796,338 km (0.067 R)
• M26: 15,865,453 km (0.067 R)
• M27: 15,934,716 km (0.026 R)
• M28: 16,844,571 km (0.098 R)
• M29: 17,412,743 km (0.082 R)
• M30: 17,771,030 km (0.098 R)
• M31: 18,349,525 km (0.068 R)
• M32: 18,422,230 km (0.106 R)
• M33: 19,598,967 km (0.117 R)
• M34: 22,645,527 km (0.049 R)
• M35: 23,746,119 km (0.101 R)
• M36: 23,904,842 km (0.075 R)
• M37: 23,984,279 km (0.109 R)
• M38: 24,063,715 km (0.065 R)
• M39: 24,703,246 km (0.055 R)
• M40: 25,267,529 km (0.034 R)
• M41: 25,835,851 km (0.097 R)
• M42: 26,080,743 km (0.102 R)
• M43: 28,319,326 km (0.115 R)
• M44: 28,909,639 km (0.102 R)
• M45: 30,102,383 km (0.065 R)
• M46: 30,532,327 km (0.084 R)
• M47: 30,791,281 km (0.078 R)
• M48: 33,420,164 km (0.098 R)
• M49: 34,133,297 km (0.037 R)
• M50: 34,941,575 km (0.088 R)
• M51: 35,393,360 km (0.116 R)
• M52: 36,302,616 km (0.11 R)
• M53: 37,035,646 km (0.044 R)
• M54: 37,219,651 km (0.079 R)
• M55: 37,311,803 km (0.098 R)
• M56: 37,403,956 km (0.053 R)
• M57: 38,051,415 km (0.057 R)
• M58: 39,357,405 km (0.076 R)
• M59: 39,545,300 km (0.095 R)
• M60: 39,921,688 km (0.065 R)
• M61: 42,205,299 km (0.068 R)
• M62: 42,782,747 km (0.079 R)
• M63: 42,879,238 km (0.085 R)
• M64: 44,140,348 km (0.062 R)
• M65: 44,726,472 km (0.038 R)
• M66: 45,216,854 km (0.061 R)
• M67: 48,196,694 km (0.089 R)
• M68: 50,830,065 km (0.092 R)
• M69: 50,932,241 km (0.077 R)
• M70: 51,855,260 km (0.11 R)
• M71: 54,971,533 km (0.116 R)
• M72: 55,812,871 km (0.062 R)
• M73: 56,023,804 km (0.106 R)
• M74: 56,446,568 km (0.117 R)
• M75: 56,658,249 km (0.095 R)
• M76: 57,082,658 km (0.077 R)
• M77: 57,827,805 km (0.108 R)
• M78: 58,576,093 km (0.113 R)
• M79: 59,220,112 km (0.09 R)
• M80: 60,840,257 km (0.086 R)
• M81: 61,601,411 km (0.073 R)
• M82: 63,462,708 km (0.079 R)
• M83: 64,234,633 km (0.046 R)
• M84: 65,676,158 km (0.046 R)
• M85: 66,010,360 km (0.059 R)
• M86: 68,817,264 km (0.098 R)
• M87: 72,927,167 km (0.084 R)
• M88: 74,198,599 km (0.105 R)
• M89: 74,895,276 km (0.118 R)
• M90: 78,175,060 km (0.07 R)
• M91: 78,883,855 km (0.058 R)

Kuiper Belt

Range: 30.6 - 53.6 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 439 - 10,824 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit