🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.4 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 787.4

Radius: 11

Gravity: 6.51 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 0.77 AU - 0.81 AU

Year: 461 Days

Day: 7.5 Hours

Environment

Temp: -151 °C

Axial Tilt: 16.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (49)

Outer Limit: 54,849,443 km

• M1: 153,338 km (0.078 R)
• M2: 222,751 km (0.054 R)
• M3: 310,116 km (0.068 R)
• M4: 419,323 km (0.096 R)
• M5: 489,035 km (0.028 R)
• M6: 567,724 km (0.088 R)
• M7: 735,872 km (0.089 R)
• M8: 959,670 km (0.056 R)
• M9: 1,042,548 km (0.104 R)
• M10: 1,153,848 km (0.048 R)
• M11: 1,237,324 km (0.045 R)
• M12: 1,317,658 km (0.081 R)
• M13: 1,489,546 km (0.102 R)
• M14: 1,558,062 km (0.082 R)
• M15: 1,639,593 km (0.107 R)
• M16: 1,923,679 km (0.107 R)
• M17: 2,017,776 km (0.054 R)
• M18: 2,100,653 km (0.112 R)
• M19: 2,217,340 km (0.086 R)
• M20: 2,382,944 km (0.072 R)
• M21: 2,457,295 km (0.074 R)
• M22: 2,552,888 km (0.095 R)
• M23: 2,733,901 km (0.111 R)
• M24: 2,854,477 km (0.111 R)
• M25: 2,940,795 km (0.112 R)
• M26: 3,064,512 km (0.107 R)
• M27: 3,347,552 km (0.073 R)
• M28: 3,476,954 km (0.083 R)
• M29: 3,553,847 km (0.084 R)
• M30: 3,678,013 km (0.077 R)
• M31: 3,787,968 km (0.081 R)
• M32: 3,875,183 km (0.113 R)
• M33: 3,946,990 km (0.087 R)
• M34: 4,035,403 km (0.03 R)
• M35: 4,132,492 km (0.072 R)
• M36: 4,255,162 km (0.095 R)
• M37: 4,329,213 km (0.083 R)
• M38: 4,783,392 km (0.06 R)
• M39: 4,886,315 km (0.116 R)
• M40: 4,964,106 km (0.114 R)
• M41: 5,042,196 km (0.095 R)
• M42: 5,182,220 km (0.079 R)
• M43: 5,430,403 km (0.112 R)
• M44: 5,501,910 km (0.092 R)
• M45: 5,782,556 km (0.07 R)
• M46: 5,956,688 km (0.103 R)
• M47: 6,142,040 km (0.097 R)
• M48: 6,367,035 km (0.046 R)
• M49: 6,452,156 km (0.037 R)

Planet 2 - Gas Giant

Semi-Major Axis: 1.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 615.2

Radius: 14.2

Gravity: 3.05 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 1.2 AU - 1.48 AU

Year: 1018 Days

Day: 13.6 Hours

Environment

Temp: -180 °C

Axial Tilt: 25.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (45)

Outer Limit: 54,849,443 km

• M1: 178,171 km (0.108 R)
• M2: 280,795 km (0.066 R)
• M3: 508,782 km (0.078 R)
• M4: 706,551 km (0.084 R)
• M5: 876,943 km (0.098 R)
• M6: 1,075,758 km (0.116 R)
• M7: 1,247,646 km (0.07 R)
• M8: 1,504,655 km (0.095 R)
• M9: 1,902,436 km (0.085 R)
• M10: 2,019,870 km (0.051 R)
• M11: 2,131,321 km (0.087 R)
• M12: 2,616,467 km (0.049 R)
• M13: 2,939,897 km (0.08 R)
• M14: 3,216,055 km (0.036 R)
• M15: 3,316,734 km (0.116 R)
• M16: 3,490,567 km (0.094 R)
• M17: 3,815,344 km (0.093 R)
• M18: 4,008,475 km (0.072 R)
• M19: 4,128,153 km (0.108 R)
• M20: 4,260,248 km (0.096 R)
• M21: 4,415,980 km (0.105 R)
• M22: 4,517,108 km (0.103 R)
• M23: 4,675,981 km (0.096 R)
• M24: 4,871,505 km (0.087 R)
• M25: 5,258,964 km (0.096 R)
• M26: 5,366,375 km (0.089 R)
• M27: 5,889,818 km (0.086 R)
• M28: 6,038,817 km (0.082 R)
• M29: 6,189,163 km (0.066 R)
• M30: 6,468,014 km (0.043 R)
• M31: 6,583,204 km (0.11 R)
• M32: 6,712,157 km (0.076 R)
• M33: 6,841,859 km (0.112 R)
• M34: 6,959,443 km (0.086 R)
• M35: 7,436,211 km (0.097 R)
• M36: 7,746,477 km (0.071 R)
• M37: 8,171,335 km (0.044 R)
• M38: 8,310,012 km (0.118 R)
• M39: 8,787,678 km (0.109 R)
• M40: 9,130,108 km (0.087 R)
• M41: 9,259,659 km (0.105 R)
• M42: 9,448,003 km (0.059 R)
• M43: 9,637,544 km (0.095 R)
• M44: 9,798,960 km (0.114 R)
• M45: 9,931,653 km (0.117 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 38.7

Radius: 12.2

Gravity: 0.26 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 1.92 AU - 2.48 AU

Year: 2141 Days

Day: 14.3 Hours

Environment

Temp: -185 °C

Axial Tilt: 39.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 54,849,443 km

• M1: 153,338 km (0.114 R)
• M2: 364,271 km (0.07 R)
• M3: 463,604 km (0.028 R)
• M4: 792,719 km (0.037 R)
• M5: 874,848 km (0.082 R)
• M6: 1,023,848 km (0.086 R)
• M7: 1,288,486 km (0.103 R)
• M8: 1,540,559 km (0.08 R)
• M9: 1,790,537 km (0.063 R)
• M10: 1,977,385 km (0.1 R)
• M11: 2,105,740 km (0.109 R)
• M12: 2,283,312 km (0.099 R)
• M13: 2,632,623 km (0.053 R)
• M14: 2,767,261 km (0.103 R)
• M15: 3,192,568 km (0.086 R)
• M16: 3,599,325 km (0.116 R)
• M17: 3,861,121 km (0.093 R)
• M18: 4,294,656 km (0.083 R)
• M19: 4,900,078 km (0.096 R)
• M20: 5,040,251 km (0.071 R)
• M21: 5,146,167 km (0.082 R)
• M22: 5,244,004 km (0.107 R)
• M23: 5,761,014 km (0.112 R)
• M24: 5,937,091 km (0.047 R)
• M25: 6,105,538 km (0.086 R)
• M26: 6,351,626 km (0.062 R)
• M27: 6,437,496 km (0.071 R)
• M28: 6,543,112 km (0.098 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 86.5

Radius: 14.1

Gravity: 0.44 G

Time & Orbit

Eccentricity (e): 0.005

Orbit Range: 3.14 AU - 3.18 AU

Year: 3685 Days

Day: 5.9 Hours

Environment

Temp: -200 °C

Axial Tilt: 2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 54,849,443 km

• M1: 182,509 km (0.075 R)
• M2: 363,523 km (0.109 R)
• M3: 619,934 km (0.067 R)
• M4: 759,658 km (0.034 R)
• M5: 955,182 km (0.085 R)
• M6: 1,160,730 km (0.036 R)
• M7: 1,257,071 km (0.073 R)
• M8: 1,563,447 km (0.061 R)
• M9: 1,828,236 km (0.062 R)
• M10: 2,258,180 km (0.079 R)
• M11: 2,580,414 km (0.091 R)
• M12: 3,143,051 km (0.032 R)
• M13: 3,432,972 km (0.081 R)
• M14: 3,695,367 km (0.104 R)
• M15: 3,878,175 km (0.12 R)
• M16: 4,380,525 km (0.115 R)
• M17: 4,770,826 km (0.078 R)
• M18: 5,213,486 km (0.119 R)
• M19: 5,363,981 km (0.04 R)
• M20: 6,355,666 km (0.049 R)
• M21: 6,516,782 km (0.111 R)
• M22: 6,664,286 km (0.101 R)
• M23: 6,917,854 km (0.095 R)
• M24: 7,496,050 km (0.114 R)
• M25: 7,806,615 km (0.092 R)
• M26: 8,137,376 km (0.044 R)
• M27: 9,140,729 km (0.054 R)
• M28: 9,944,219 km (0.094 R)
• M29: 10,475,292 km (0.062 R)
• M30: 10,735,592 km (0.11 R)
• M31: 10,945,478 km (0.106 R)
• M32: 11,351,337 km (0.06 R)
• M33: 11,600,866 km (0.099 R)
• M34: 11,978,601 km (0.076 R)
• M35: 12,196,415 km (0.115 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 696

Radius: 10.7

Gravity: 6.08 G

Time & Orbit

Eccentricity (e): 0.226

Orbit Range: 2.73 AU - 4.33 AU

Year: 4351 Days

Day: 12.4 Hours

Environment

Temp: -210 °C

Axial Tilt: 2.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (81)

Outer Limit: 54,849,443 km

• M1: 137,630 km (0.085 R)
• M2: 283,338 km (0.082 R)
• M3: 488,287 km (0.083 R)
• M4: 589,416 km (0.084 R)
• M5: 665,112 km (0.118 R)
• M6: 914,043 km (0.115 R)
• M7: 1,016,966 km (0.044 R)
• M8: 1,151,305 km (0.076 R)
• M9: 1,320,949 km (0.092 R)
• M10: 1,408,913 km (0.081 R)
• M11: 1,590,973 km (0.06 R)
• M12: 1,669,213 km (0.067 R)
• M13: 1,748,799 km (0.117 R)
• M14: 1,911,861 km (0.088 R)
• M15: 1,995,336 km (0.116 R)
• M16: 2,097,213 km (0.112 R)
• M17: 2,253,393 km (0.08 R)
• M18: 3,170,278 km (0.043 R)
• M19: 3,472,316 km (0.096 R)
• M20: 3,762,536 km (0.101 R)
• M21: 3,974,815 km (0.032 R)
• M22: 4,344,621 km (0.091 R)
• M23: 4,657,580 km (0.091 R)
• M24: 4,908,755 km (0.1 R)
• M25: 5,024,394 km (0.118 R)
• M26: 5,094,256 km (0.099 R)
• M27: 6,254,986 km (0.119 R)
• M28: 6,557,772 km (0.096 R)
• M29: 6,685,379 km (0.113 R)
• M30: 6,942,987 km (0.12 R)
• M31: 7,230,065 km (0.106 R)
• M32: 7,547,811 km (0.082 R)
• M33: 7,654,773 km (0.113 R)
• M34: 8,667,850 km (0.049 R)
• M35: 8,948,945 km (0.107 R)
• M36: 9,318,751 km (0.038 R)
• M37: 9,433,492 km (0.077 R)
• M38: 9,519,960 km (0.065 R)
• M39: 9,868,373 km (0.052 R)
• M40: 10,280,066 km (0.049 R)
• M41: 11,150,876 km (0.099 R)
• M42: 11,548,806 km (0.097 R)
• M43: 12,076,438 km (0.053 R)
• M44: 12,233,067 km (0.1 R)
• M45: 12,358,878 km (0.101 R)
• M46: 12,707,142 km (0.097 R)
• M47: 13,836,606 km (0.072 R)
• M48: 13,967,804 km (0.092 R)
• M49: 14,231,245 km (0.066 R)
• M50: 14,562,904 km (0.101 R)
• M51: 14,964,425 km (0.09 R)
• M52: 15,099,063 km (0.098 R)
• M53: 15,267,959 km (0.112 R)
• M54: 17,131,200 km (0.041 R)
• M55: 17,910,755 km (0.088 R)
• M56: 18,593,220 km (0.118 R)
• M57: 19,284,362 km (0.1 R)
• M58: 19,430,968 km (0.105 R)
• M59: 19,541,072 km (0.088 R)
• M60: 19,983,882 km (0.054 R)
• M61: 20,280,834 km (0.115 R)
• M62: 20,355,333 km (0.106 R)
• M63: 20,766,578 km (0.065 R)
• M64: 21,142,966 km (0.118 R)
• M65: 21,369,757 km (0.065 R)
• M66: 21,483,601 km (0.12 R)
• M67: 22,131,808 km (0.039 R)
• M68: 22,439,082 km (0.106 R)
• M69: 22,516,125 km (0.068 R)
• M70: 23,096,864 km (0.109 R)
• M71: 23,957,501 km (0.113 R)
• M72: 24,233,509 km (0.075 R)
• M73: 24,709,230 km (0.088 R)
• M74: 25,067,966 km (0.082 R)
• M75: 25,187,943 km (0.11 R)
• M76: 25,308,070 km (0.111 R)
• M77: 25,428,496 km (0.109 R)
• M78: 25,589,165 km (0.085 R)
• M79: 25,871,456 km (0.108 R)
• M80: 26,601,793 km (0.108 R)
• M81: 26,805,844 km (0.066 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.68 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 605.7

Radius: 4.6

Gravity: 28.62 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 5.96 AU - 9.4 AU

Year: 13962 Days

Day: 21.3 Hours

Environment

Temp: -231 °C

Axial Tilt: 22.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (94)

Outer Limit: 54,849,443 km

• M1: 77,492 km (0.098 R)
• M2: 219,610 km (0.098 R)
• M3: 284,086 km (0.069 R)
• M4: 777,610 km (0.111 R)
• M5: 1,008,738 km (0.117 R)
• M6: 1,633,310 km (0.075 R)
• M7: 2,503,820 km (0.089 R)
• M8: 2,686,479 km (0.065 R)
• M9: 2,905,041 km (0.117 R)
• M10: 3,032,648 km (0.042 R)
• M11: 3,097,125 km (0.097 R)
• M12: 5,001,206 km (0.106 R)
• M13: 5,901,187 km (0.066 R)
• M14: 6,103,444 km (0.108 R)
• M15: 6,184,974 km (0.089 R)
• M16: 6,349,083 km (0.03 R)
• M17: 8,022,934 km (0.071 R)
• M18: 8,067,514 km (0.091 R)
• M19: 8,202,002 km (0.091 R)
• M20: 9,350,316 km (0.064 R)
• M21: 10,793,337 km (0.082 R)
• M22: 11,843,963 km (0.026 R)
• M23: 13,241,955 km (0.087 R)
• M24: 14,364,836 km (0.081 R)
• M25: 14,527,748 km (0.105 R)
• M26: 14,910,121 km (0.067 R)
• M27: 15,075,127 km (0.076 R)
• M28: 15,130,179 km (0.095 R)
• M29: 15,185,381 km (0.041 R)
• M30: 15,573,587 km (0.077 R)
• M31: 15,852,737 km (0.09 R)
• M32: 15,964,935 km (0.085 R)
• M33: 16,246,478 km (0.109 R)
• M34: 16,928,794 km (0.059 R)
• M35: 16,986,090 km (0.112 R)
• M36: 17,794,966 km (0.108 R)
• M37: 18,616,258 km (0.085 R)
• M38: 19,031,542 km (0.095 R)
• M39: 19,150,771 km (0.093 R)
• M40: 19,750,509 km (0.063 R)
• M41: 20,845,566 km (0.097 R)
• M42: 21,276,707 km (0.093 R)
• M43: 22,085,134 km (0.097 R)
• M44: 22,840,453 km (0.094 R)
• M45: 23,476,244 km (0.098 R)
• M46: 24,505,478 km (0.052 R)
• M47: 25,483,848 km (0.079 R)
• M48: 26,674,497 km (0.119 R)
• M49: 27,613,074 km (0.076 R)
• M50: 27,815,630 km (0.09 R)
• M51: 28,018,634 km (0.072 R)
• M52: 28,767,371 km (0.032 R)
• M53: 29,798,699 km (0.096 R)
• M54: 30,145,317 km (0.072 R)
• M55: 30,214,731 km (0.117 R)
• M56: 31,897,707 km (0.117 R)
• M57: 32,536,639 km (0.117 R)
• M58: 33,827,071 km (0.086 R)
• M59: 34,623,978 km (0.096 R)
• M60: 34,696,683 km (0.077 R)
• M61: 34,988,249 km (0.096 R)
• M62: 35,061,253 km (0.083 R)
• M63: 36,309,946 km (0.106 R)
• M64: 37,051,353 km (0.04 R)
• M65: 37,349,203 km (0.097 R)
• M66: 38,172,589 km (0.106 R)
• M67: 38,699,772 km (0.059 R)
• M68: 39,685,024 km (0.067 R)
• M69: 39,989,904 km (0.087 R)
• M70: 43,629,321 km (0.113 R)
• M71: 44,180,440 km (0.049 R)
• M72: 45,050,950 km (0.069 R)
• M73: 45,209,823 km (0.079 R)
• M74: 45,368,995 km (0.104 R)
• M75: 45,607,903 km (0.118 R)
• M76: 46,407,503 km (0.068 R)
• M77: 46,487,688 km (0.036 R)
• M78: 48,426,626 km (0.109 R)
• M79: 48,589,388 km (0.066 R)
• M80: 49,242,383 km (0.106 R)
• M81: 49,651,832 km (0.067 R)
• M82: 50,144,757 km (0.099 R)
• M83: 50,721,906 km (0.104 R)
• M84: 51,716,433 km (0.044 R)
• M85: 53,052,342 km (0.041 R)
• M86: 53,304,115 km (0.078 R)
• M87: 53,724,635 km (0.106 R)
• M88: 54,315,247 km (0.089 R)
• M89: 54,568,965 km (0.04 R)
• M90: 54,738,310 km (0.03 R)
• M91: 55,928,810 km (0.08 R)
• M92: 56,014,230 km (0.103 R)
• M93: 56,185,071 km (0.07 R)
• M94: 56,441,631 km (0.087 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.97 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 471.1

Radius: 3.7

Gravity: 34.41 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 6.46 AU - 9.48 AU

Year: 14760 Days

Day: 20.3 Hours

Environment

Temp: -226 °C

Axial Tilt: 34.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (89)

Outer Limit: 54,849,443 km

• M1: 47,722 km (0.102 R)
• M2: 92,751 km (0.116 R)
• M3: 811,568 km (0.109 R)
• M4: 1,039,256 km (0.09 R)
• M5: 1,501,065 km (0.108 R)
• M6: 1,625,381 km (0.037 R)
• M7: 1,650,663 km (0.084 R)
• M8: 2,100,205 km (0.12 R)
• M9: 2,324,153 km (0.101 R)
• M10: 2,644,442 km (0.068 R)
• M11: 2,704,131 km (0.119 R)
• M12: 2,734,200 km (0.063 R)
• M13: 2,794,638 km (0.089 R)
• M14: 2,978,494 km (0.116 R)
• M15: 3,040,726 km (0.118 R)
• M16: 3,390,337 km (0.102 R)
• M17: 3,487,874 km (0.1 R)
• M18: 3,853,492 km (0.1 R)
• M19: 5,021,552 km (0.089 R)
• M20: 5,701,175 km (0.095 R)
• M21: 5,973,144 km (0.105 R)
• M22: 6,329,187 km (0.11 R)
• M23: 6,610,730 km (0.033 R)
• M24: 7,777,444 km (0.032 R)
• M25: 8,165,800 km (0.068 R)
• M26: 8,296,698 km (0.04 R)
• M27: 9,006,091 km (0.08 R)
• M28: 9,368,118 km (0.12 R)
• M29: 9,505,150 km (0.089 R)
• M30: 9,596,853 km (0.057 R)
• M31: 10,199,882 km (0.072 R)
• M32: 11,296,584 km (0.104 R)
• M33: 11,345,203 km (0.089 R)
• M34: 11,735,953 km (0.031 R)
• M35: 12,031,858 km (0.053 R)
• M36: 12,280,340 km (0.05 R)
• M37: 13,137,835 km (0.103 R)
• M38: 13,342,335 km (0.113 R)
• M39: 14,856,565 km (0.082 R)
• M40: 15,230,260 km (0.115 R)
• M41: 16,424,350 km (0.089 R)
• M42: 17,143,916 km (0.067 R)
• M43: 17,873,954 km (0.096 R)
• M44: 18,043,747 km (0.081 R)
• M45: 18,328,133 km (0.061 R)
• M46: 18,442,276 km (0.069 R)
• M47: 19,189,966 km (0.102 R)
• M48: 19,538,380 km (0.105 R)
• M49: 20,182,548 km (0.056 R)
• M50: 20,241,340 km (0.074 R)
• M51: 20,300,431 km (0.093 R)
• M52: 21,732,531 km (0.101 R)
• M53: 21,792,969 km (0.053 R)
• M54: 21,853,407 km (0.08 R)
• M55: 23,506,164 km (0.104 R)
• M56: 25,389,152 km (0.072 R)
• M57: 28,171,224 km (0.07 R)
• M58: 28,964,691 km (0.08 R)
• M59: 29,497,708 km (0.113 R)
• M60: 29,631,449 km (0.113 R)
• M61: 29,899,528 km (0.078 R)
• M62: 30,912,306 km (0.095 R)
• M63: 31,798,972 km (0.094 R)
• M64: 32,694,166 km (0.115 R)
• M65: 33,040,485 km (0.095 R)
• M66: 33,318,587 km (0.105 R)
• M67: 33,597,438 km (0.047 R)
• M68: 34,368,166 km (0.112 R)
• M69: 34,791,079 km (0.088 R)
• M70: 35,286,547 km (0.099 R)
• M71: 35,499,575 km (0.117 R)
• M72: 36,858,971 km (0.118 R)
• M73: 38,308,275 km (0.097 R)
• M74: 38,527,136 km (0.092 R)
• M75: 39,186,713 km (0.058 R)
• M76: 39,407,370 km (0.054 R)
• M77: 39,480,972 km (0.051 R)
• M78: 40,888,838 km (0.072 R)
• M79: 41,187,286 km (0.103 R)
• M80: 41,411,683 km (0.082 R)
• M81: 42,011,869 km (0.111 R)
• M82: 43,448,906 km (0.089 R)
• M83: 45,441,251 km (0.119 R)
• M84: 46,137,928 km (0.109 R)
• M85: 46,370,852 km (0.07 R)
• M86: 46,526,434 km (0.061 R)
• M87: 48,091,377 km (0.111 R)
• M88: 50,310,961 km (0.09 R)
• M89: 53,784,324 km (0.079 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 502 - 14,990 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit