🌌 Stone's Star System Generator

Planet 1 - Gas Giant

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 345.1

Radius: 12.4

Gravity: 2.24 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 0.41 AU - 0.65 AU

Year: 262 Days

Day: 9 Hours

Environment

Temp: -145 °C

Axial Tilt: 48 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 59,504,535 km

• M1: 154,385 km (0.044 R)
• M2: 266,434 km (0.081 R)
• M3: 361,428 km (0.116 R)
• M4: 456,274 km (0.094 R)
• M5: 555,158 km (0.07 R)
• M6: 652,546 km (0.056 R)
• M7: 807,081 km (0.043 R)
• M8: 887,863 km (0.106 R)
• M9: 977,921 km (0.076 R)
• M10: 1,074,562 km (0.094 R)
• M11: 1,168,060 km (0.103 R)
• M12: 1,288,337 km (0.047 R)
• M13: 1,402,480 km (0.096 R)
• M14: 1,494,782 km (0.097 R)
• M15: 1,596,808 km (0.087 R)
• M16: 1,693,747 km (0.069 R)
• M17: 1,773,483 km (0.101 R)
• M18: 1,866,383 km (0.105 R)
• M19: 1,980,825 km (0.113 R)
• M20: 2,113,968 km (0.09 R)
• M21: 2,221,080 km (0.081 R)
• M22: 2,342,703 km (0.078 R)
• M23: 2,423,635 km (0.067 R)
• M24: 2,501,276 km (0.114 R)
• M25: 2,584,154 km (0.059 R)
• M26: 2,676,904 km (0.115 R)
• M27: 2,815,731 km (0.071 R)
• M28: 2,920,450 km (0.11 R)
• M29: 3,007,964 km (0.101 R)
• M30: 3,115,076 km (0.071 R)
• M31: 3,294,744 km (0.117 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 161.7

Radius: 11.9

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 0.68 AU - 0.94 AU

Year: 494 Days

Day: 6.2 Hours

Environment

Temp: -173 °C

Axial Tilt: 11.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 59,504,535 km

• M1: 163,211 km (0.057 R)
• M2: 257,009 km (0.114 R)
• M3: 403,166 km (0.027 R)
• M4: 525,687 km (0.08 R)
• M5: 616,792 km (0.096 R)
• M6: 726,447 km (0.071 R)
• M7: 814,411 km (0.079 R)
• M8: 893,099 km (0.117 R)
• M9: 1,073,066 km (0.065 R)
• M10: 1,167,911 km (0.116 R)
• M11: 1,246,749 km (0.112 R)
• M12: 1,327,382 km (0.057 R)
• M13: 1,409,960 km (0.111 R)
• M14: 1,605,634 km (0.027 R)
• M15: 1,685,519 km (0.104 R)
• M16: 1,792,930 km (0.044 R)
• M17: 1,902,735 km (0.118 R)
• M18: 1,978,731 km (0.059 R)
• M19: 2,069,537 km (0.053 R)
• M20: 2,217,788 km (0.054 R)
• M21: 2,302,760 km (0.106 R)
• M22: 2,379,205 km (0.096 R)
• M23: 2,510,402 km (0.062 R)
• M24: 2,589,240 km (0.03 R)
• M25: 2,683,935 km (0.104 R)
• M26: 2,851,335 km (0.103 R)
• M27: 3,011,854 km (0.092 R)
• M28: 3,244,778 km (0.068 R)
• M29: 3,401,706 km (0.103 R)
• M30: 3,622,213 km (0.074 R)
• M31: 3,751,167 km (0.059 R)
• M32: 3,870,396 km (0.074 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 700.6

Radius: 9.7

Gravity: 7.45 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 0.87 AU - 1.13 AU

Year: 678 Days

Day: 9.2 Hours

Environment

Temp: -169 °C

Axial Tilt: 2.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (53)

Outer Limit: 59,504,535 km

• M1: 125,213 km (0.042 R)
• M2: 236,963 km (0.074 R)
• M3: 359,633 km (0.106 R)
• M4: 500,106 km (0.047 R)
• M5: 655,687 km (0.091 R)
• M6: 775,815 km (0.086 R)
• M7: 1,039,256 km (0.088 R)
• M8: 1,103,583 km (0.077 R)
• M9: 1,181,524 km (0.062 R)
• M10: 1,349,822 km (0.116 R)
• M11: 1,414,149 km (0.059 R)
• M12: 1,479,523 km (0.1 R)
• M13: 1,786,947 km (0.071 R)
• M14: 1,886,728 km (0.113 R)
• M15: 2,025,256 km (0.046 R)
• M16: 2,092,126 km (0.089 R)
• M17: 2,159,744 km (0.101 R)
• M18: 2,320,263 km (0.095 R)
• M19: 2,398,203 km (0.047 R)
• M20: 2,637,261 km (0.072 R)
• M21: 2,784,465 km (0.101 R)
• M22: 2,934,512 km (0.103 R)
• M23: 3,010,508 km (0.108 R)
• M24: 3,087,251 km (0.114 R)
• M25: 3,199,150 km (0.065 R)
• M26: 3,260,037 km (0.11 R)
• M27: 3,427,138 km (0.091 R)
• M28: 3,633,283 km (0.091 R)
• M29: 3,742,490 km (0.079 R)
• M30: 3,862,019 km (0.106 R)
• M31: 4,001,593 km (0.093 R)
• M32: 4,067,267 km (0.114 R)
• M33: 4,190,236 km (0.095 R)
• M34: 4,324,126 km (0.109 R)
• M35: 4,420,617 km (0.077 R)
• M36: 4,576,498 km (0.092 R)
• M37: 4,724,301 km (0.07 R)
• M38: 4,843,680 km (0.105 R)
• M39: 4,933,887 km (0.078 R)
• M40: 5,085,430 km (0.077 R)
• M41: 5,238,618 km (0.098 R)
• M42: 5,393,302 km (0.104 R)
• M43: 5,696,837 km (0.099 R)
• M44: 5,781,509 km (0.079 R)
• M45: 6,342,351 km (0.119 R)
• M46: 6,651,570 km (0.098 R)
• M47: 6,774,390 km (0.116 R)
• M48: 6,954,356 km (0.118 R)
• M49: 7,045,013 km (0.088 R)
• M50: 7,113,229 km (0.041 R)
• M51: 7,399,859 km (0.102 R)
• M52: 7,620,216 km (0.052 R)
• M53: 7,748,871 km (0.104 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 436.4

Radius: 8.9

Gravity: 5.51 G

Time & Orbit

Eccentricity (e): 0.146

Orbit Range: 1.22 AU - 1.64 AU

Year: 1160 Days

Day: 7.2 Hours

Environment

Temp: -190 °C

Axial Tilt: 42.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (51)

Outer Limit: 59,504,535 km

• M1: 130,300 km (0.102 R)
• M2: 275,110 km (0.113 R)
• M3: 372,499 km (0.093 R)
• M4: 440,715 km (0.073 R)
• M5: 508,782 km (0.112 R)
• M6: 565,330 km (0.106 R)
• M7: 851,361 km (0.112 R)
• M8: 907,610 km (0.101 R)
• M9: 1,004,251 km (0.107 R)
• M10: 1,180,477 km (0.083 R)
• M11: 1,265,299 km (0.041 R)
• M12: 1,337,555 km (0.113 R)
• M13: 1,456,186 km (0.088 R)
• M14: 1,760,318 km (0.071 R)
• M15: 1,817,165 km (0.04 R)
• M16: 1,899,295 km (0.068 R)
• M17: 2,008,052 km (0.073 R)
• M18: 2,136,108 km (0.101 R)
• M19: 2,249,354 km (0.045 R)
• M20: 2,509,205 km (0.061 R)
• M21: 2,788,355 km (0.106 R)
• M22: 2,893,223 km (0.104 R)
• M23: 3,116,722 km (0.074 R)
• M24: 3,426,988 km (0.063 R)
• M25: 3,498,496 km (0.036 R)
• M26: 3,601,419 km (0.068 R)
• M27: 3,705,539 km (0.094 R)
• M28: 3,789,464 km (0.102 R)
• M29: 4,055,748 km (0.117 R)
• M30: 4,317,245 km (0.118 R)
• M31: 4,833,806 km (0.116 R)
• M32: 5,322,692 km (0.12 R)
• M33: 5,417,537 km (0.102 R)
• M34: 5,585,087 km (0.08 R)
• M35: 5,900,589 km (0.081 R)
• M36: 5,998,875 km (0.105 R)
• M37: 6,347,138 km (0.08 R)
• M38: 6,422,536 km (0.067 R)
• M39: 6,561,811 km (0.098 R)
• M40: 6,676,403 km (0.052 R)
• M41: 6,920,547 km (0.082 R)
• M42: 7,167,683 km (0.072 R)
• M43: 7,259,536 km (0.09 R)
• M44: 7,497,396 km (0.105 R)
• M45: 7,603,910 km (0.08 R)
• M46: 8,007,974 km (0.084 R)
• M47: 8,253,763 km (0.034 R)
• M48: 8,322,429 km (0.028 R)
• M49: 9,062,489 km (0.113 R)
• M50: 9,347,324 km (0.105 R)
• M51: 9,721,917 km (0.09 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 220.3

Radius: 12.6

Gravity: 1.39 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 1.61 AU - 2.01 AU

Year: 1652 Days

Day: 7.6 Hours

Environment

Temp: -197 °C

Axial Tilt: 38.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (48)

Outer Limit: 59,504,535 km

• M1: 186,249 km (0.032 R)
• M2: 299,645 km (0.062 R)
• M3: 385,215 km (0.117 R)
• M4: 483,052 km (0.099 R)
• M5: 566,228 km (0.104 R)
• M6: 677,230 km (0.105 R)
• M7: 767,736 km (0.09 R)
• M8: 905,815 km (0.091 R)
• M9: 1,020,407 km (0.112 R)
• M10: 1,119,890 km (0.102 R)
• M11: 1,265,000 km (0.079 R)
• M12: 1,351,018 km (0.085 R)
• M13: 1,431,652 km (0.055 R)
• M14: 1,514,080 km (0.049 R)
• M15: 1,755,381 km (0.117 R)
• M16: 1,951,055 km (0.038 R)
• M17: 2,051,585 km (0.088 R)
• M18: 2,310,988 km (0.091 R)
• M19: 2,408,825 km (0.095 R)
• M20: 2,489,907 km (0.101 R)
• M21: 2,664,338 km (0.112 R)
• M22: 2,986,572 km (0.104 R)
• M23: 3,371,936 km (0.107 R)
• M24: 3,473,363 km (0.068 R)
• M25: 3,731,420 km (0.056 R)
• M26: 4,125,161 km (0.099 R)
• M27: 4,487,637 km (0.096 R)
• M28: 5,231,737 km (0.112 R)
• M29: 5,444,615 km (0.079 R)
• M30: 5,588,228 km (0.069 R)
• M31: 5,684,569 km (0.038 R)
• M32: 6,199,934 km (0.101 R)
• M33: 6,287,299 km (0.11 R)
• M34: 6,628,233 km (0.113 R)
• M35: 6,781,720 km (0.108 R)
• M36: 6,871,778 km (0.063 R)
• M37: 7,118,315 km (0.085 R)
• M38: 7,460,446 km (0.102 R)
• M39: 7,646,845 km (0.102 R)
• M40: 7,767,570 km (0.086 R)
• M41: 8,010,966 km (0.097 R)
• M42: 8,644,214 km (0.092 R)
• M43: 8,952,834 km (0.107 R)
• M44: 9,065,930 km (0.101 R)
• M45: 9,208,048 km (0.115 R)
• M46: 9,523,251 km (0.087 R)
• M47: 9,667,762 km (0.098 R)
• M48: 9,856,705 km (0.084 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 242.1

Radius: 12.7

Gravity: 1.5 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 2.02 AU - 2.16 AU

Year: 2049 Days

Day: 10.6 Hours

Environment

Temp: -204 °C

Axial Tilt: 42.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 59,504,535 km

• M1: 181,462 km (0.112 R)
• M2: 295,755 km (0.087 R)
• M3: 377,884 km (0.098 R)
• M4: 536,608 km (0.076 R)
• M5: 623,075 km (0.053 R)
• M6: 760,256 km (0.117 R)
• M7: 853,456 km (0.118 R)
• M8: 1,052,870 km (0.027 R)
• M9: 1,181,823 km (0.072 R)
• M10: 1,473,539 km (0.057 R)
• M11: 1,628,223 km (0.087 R)
• M12: 2,010,595 km (0.112 R)
• M13: 2,689,171 km (0.111 R)
• M14: 2,858,965 km (0.065 R)
• M15: 2,966,825 km (0.062 R)
• M16: 3,065,111 km (0.063 R)
• M17: 3,321,372 km (0.073 R)
• M18: 3,584,664 km (0.107 R)
• M19: 3,689,682 km (0.115 R)
• M20: 3,890,741 km (0.062 R)
• M21: 4,205,495 km (0.07 R)
• M22: 4,415,680 km (0.11 R)
• M23: 4,808,225 km (0.111 R)
• M24: 5,264,947 km (0.105 R)
• M25: 5,438,331 km (0.071 R)
• M26: 5,572,820 km (0.115 R)
• M27: 6,150,268 km (0.073 R)
• M28: 6,304,653 km (0.1 R)
• M29: 6,761,375 km (0.102 R)
• M30: 6,877,164 km (0.092 R)
• M31: 7,125,496 km (0.111 R)
• M32: 7,995,258 km (0.039 R)
• M33: 9,025,539 km (0.116 R)
• M34: 9,346,127 km (0.075 R)
• M35: 9,556,462 km (0.071 R)
• M36: 9,703,067 km (0.076 R)
• M37: 10,296,672 km (0.028 R)
• M38: 10,581,207 km (0.054 R)
• M39: 10,682,186 km (0.113 R)
• M40: 10,851,381 km (0.079 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.29 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 102.4

Radius: 12.7

Gravity: 0.63 G

Time & Orbit

Eccentricity (e): 0.133

Orbit Range: 4.59 AU - 5.99 AU

Year: 8252 Days

Day: 11.8 Hours

Environment

Temp: -220 °C

Axial Tilt: 18.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (63)

Outer Limit: 59,504,535 km

• M1: 165,754 km (0.063 R)
• M2: 256,560 km (0.059 R)
• M3: 552,016 km (0.066 R)
• M4: 632,799 km (0.048 R)
• M5: 728,242 km (0.105 R)
• M6: 1,024,596 km (0.112 R)
• M7: 1,140,085 km (0.079 R)
• M8: 1,347,129 km (0.087 R)
• M9: 1,566,888 km (0.113 R)
• M10: 1,715,588 km (0.119 R)
• M11: 1,798,765 km (0.065 R)
• M12: 2,130,722 km (0.093 R)
• M13: 2,419,895 km (0.088 R)
• M14: 2,935,858 km (0.119 R)
• M15: 3,087,251 km (0.105 R)
• M16: 3,241,187 km (0.07 R)
• M17: 4,030,915 km (0.109 R)
• M18: 4,218,510 km (0.107 R)
• M19: 4,739,859 km (0.047 R)
• M20: 4,978,168 km (0.062 R)
• M21: 5,078,698 km (0.113 R)
• M22: 5,508,194 km (0.05 R)
• M23: 5,759,069 km (0.095 R)
• M24: 6,034,928 km (0.09 R)
• M25: 6,402,490 km (0.109 R)
• M26: 6,821,813 km (0.063 R)
• M27: 7,341,516 km (0.075 R)
• M28: 7,502,333 km (0.115 R)
• M29: 7,780,585 km (0.052 R)
• M30: 8,038,642 km (0.113 R)
• M31: 9,797,165 km (0.095 R)
• M32: 10,050,583 km (0.065 R)
• M33: 10,229,353 km (0.114 R)
• M34: 10,434,900 km (0.08 R)
• M35: 10,538,123 km (0.086 R)
• M36: 10,693,705 km (0.098 R)
• M37: 11,403,247 km (0.055 R)
• M38: 11,509,611 km (0.113 R)
• M39: 12,019,740 km (0.114 R)
• M40: 12,400,317 km (0.101 R)
• M41: 12,729,732 km (0.086 R)
• M42: 12,867,810 km (0.054 R)
• M43: 13,397,088 km (0.084 R)
• M44: 13,593,959 km (0.083 R)
• M45: 13,820,001 km (0.118 R)
• M46: 13,990,542 km (0.097 R)
• M47: 14,075,963 km (0.1 R)
• M48: 14,505,907 km (0.079 R)
• M49: 14,621,397 km (0.113 R)
• M50: 15,378,960 km (0.03 R)
• M51: 16,179,159 km (0.116 R)
• M52: 17,512,076 km (0.109 R)
• M53: 18,817,318 km (0.052 R)
• M54: 19,006,260 km (0.078 R)
• M55: 19,227,515 km (0.118 R)
• M56: 19,354,374 km (0.082 R)
• M57: 19,672,718 km (0.073 R)
• M58: 19,928,680 km (0.108 R)
• M59: 20,379,269 km (0.038 R)
• M60: 21,257,708 km (0.082 R)
• M61: 21,553,164 km (0.08 R)
• M62: 21,850,115 km (0.068 R)
• M63: 22,214,835 km (0.083 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.05 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 813

Radius: 6.5

Gravity: 19.24 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 6.47 AU - 7.63 AU

Year: 12696 Days

Day: 20.5 Hours

Environment

Temp: -238 °C

Axial Tilt: 17.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (96)

Outer Limit: 59,504,535 km

• M1: 201,060 km (0.119 R)
• M2: 315,801 km (0.093 R)
• M3: 574,157 km (0.118 R)
• M4: 910,901 km (0.089 R)
• M5: 1,020,557 km (0.101 R)
• M6: 1,450,800 km (0.095 R)
• M7: 1,553,424 km (0.06 R)
• M8: 1,793,379 km (0.118 R)
• M9: 2,016,579 km (0.059 R)
• M10: 2,102,598 km (0.083 R)
• M11: 2,189,963 km (0.102 R)
• M12: 2,675,558 km (0.109 R)
• M13: 2,770,253 km (0.091 R)
• M14: 3,160,405 km (0.104 R)
• M15: 3,672,029 km (0.086 R)
• M16: 4,136,232 km (0.071 R)
• M17: 4,431,089 km (0.067 R)
• M18: 4,732,828 km (0.116 R)
• M19: 4,963,508 km (0.12 R)
• M20: 5,080,194 km (0.12 R)
• M21: 6,807,302 km (0.102 R)
• M22: 7,023,919 km (0.1 R)
• M23: 7,598,076 km (0.071 R)
• M24: 7,642,955 km (0.106 R)
• M25: 8,603,673 km (0.106 R)
• M26: 8,790,969 km (0.112 R)
• M27: 9,169,751 km (0.115 R)
• M28: 9,457,129 km (0.116 R)
• M29: 10,188,812 km (0.101 R)
• M30: 10,989,310 km (0.066 R)
• M31: 11,294,639 km (0.064 R)
• M32: 11,706,183 km (0.103 R)
• M33: 12,174,873 km (0.076 R)
• M34: 12,385,208 km (0.104 R)
• M35: 12,756,210 km (0.106 R)
• M36: 13,781,554 km (0.102 R)
• M37: 13,945,813 km (0.1 R)
• M38: 14,055,618 km (0.101 R)
• M39: 14,110,670 km (0.029 R)
• M40: 14,387,126 km (0.053 R)
• M41: 15,681,298 km (0.106 R)
• M42: 16,313,199 km (0.095 R)
• M43: 17,365,321 km (0.073 R)
• M44: 18,318,858 km (0.1 R)
• M45: 19,106,042 km (0.12 R)
• M46: 19,350,485 km (0.102 R)
• M47: 19,411,670 km (0.06 R)
• M48: 19,534,490 km (0.066 R)
• M49: 20,152,030 km (0.099 R)
• M50: 20,901,515 km (0.088 R)
• M51: 21,532,968 km (0.113 R)
• M52: 21,723,705 km (0.099 R)
• M53: 21,914,891 km (0.025 R)
• M54: 22,492,040 km (0.103 R)
• M55: 23,074,125 km (0.025 R)
• M56: 23,399,650 km (0.064 R)
• M57: 25,250,625 km (0.096 R)
• M58: 25,990,536 km (0.056 R)
• M59: 26,533,127 km (0.117 R)
• M60: 26,942,427 km (0.12 R)
• M61: 27,010,943 km (0.053 R)
• M62: 27,079,459 km (0.103 R)
• M63: 27,905,837 km (0.084 R)
• M64: 29,160,963 km (0.05 R)
• M65: 31,293,481 km (0.092 R)
• M66: 31,437,544 km (0.11 R)
• M67: 32,669,931 km (0.08 R)
• M68: 34,659,583 km (0.084 R)
• M69: 35,781,716 km (0.098 R)
• M70: 36,536,587 km (0.102 R)
• M71: 36,763,976 km (0.046 R)
• M72: 36,839,972 km (0.107 R)
• M73: 39,763,413 km (0.118 R)
• M74: 40,466,673 km (0.111 R)
• M75: 41,173,972 km (0.095 R)
• M76: 42,840,342 km (0.09 R)
• M77: 43,080,148 km (0.07 R)
• M78: 43,240,367 km (0.091 R)
• M79: 43,641,588 km (0.111 R)
• M80: 44,044,007 km (0.093 R)
• M81: 44,124,640 km (0.109 R)
• M82: 46,402,567 km (0.106 R)
• M83: 47,804,149 km (0.09 R)
• M84: 48,052,930 km (0.12 R)
• M85: 49,386,895 km (0.082 R)
• M86: 49,554,594 km (0.094 R)
• M87: 50,395,483 km (0.118 R)
• M88: 52,432,857 km (0.077 R)
• M89: 52,860,557 km (0.119 R)
• M90: 53,978,352 km (0.05 R)
• M91: 54,756,860 km (0.093 R)
• M92: 55,017,011 km (0.061 R)
• M93: 55,277,760 km (0.107 R)
• M94: 57,995,654 km (0.102 R)
• M95: 58,349,602 km (0.065 R)
• M96: 58,970,583 km (0.04 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: 159 - 17,501 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit