🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 78.3

Radius: 12.5

Gravity: 0.5 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 0.51 AU - 0.81 AU

Year: 370 Days

Day: 6.6 Hours

Environment

Temp: -164 °C

Axial Tilt: 8.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 71,064,921 km

• M1: 174,132 km (0.116 R)
• M2: 252,671 km (0.104 R)
• M3: 339,288 km (0.082 R)
• M4: 442,660 km (0.106 R)
• M5: 560,394 km (0.093 R)
• M6: 649,554 km (0.062 R)
• M7: 740,061 km (0.072 R)
• M8: 844,929 km (0.067 R)
• M9: 947,852 km (0.079 R)
• M10: 1,076,506 km (0.093 R)
• M11: 1,178,382 km (0.078 R)
• M12: 1,298,061 km (0.034 R)
• M13: 1,416,093 km (0.104 R)
• M14: 1,504,955 km (0.078 R)
• M15: 1,592,769 km (0.082 R)
• M16: 1,688,511 km (0.093 R)
• M17: 1,773,632 km (0.072 R)
• M18: 1,853,817 km (0.114 R)
• M19: 1,941,930 km (0.118 R)
• M20: 2,021,366 km (0.045 R)
• M21: 2,122,345 km (0.098 R)
• M22: 2,235,441 km (0.045 R)
• M23: 2,417,950 km (0.076 R)
• M24: 2,521,921 km (0.078 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 468.8

Radius: 10.8

Gravity: 4.02 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 0.73 AU - 0.89 AU

Year: 503 Days

Day: 7.6 Hours

Environment

Temp: -169 °C

Axial Tilt: 34.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (43)

Outer Limit: 71,064,921 km

• M1: 186,249 km (0.117 R)
• M2: 342,280 km (0.085 R)
• M3: 413,189 km (0.119 R)
• M4: 563,685 km (0.101 R)
• M5: 637,287 km (0.113 R)
• M6: 799,601 km (0.113 R)
• M7: 905,666 km (0.074 R)
• M8: 1,012,478 km (0.082 R)
• M9: 1,152,203 km (0.103 R)
• M10: 1,249,142 km (0.111 R)
• M11: 1,535,622 km (0.047 R)
• M12: 1,615,956 km (0.089 R)
• M13: 1,686,716 km (0.065 R)
• M14: 1,797,867 km (0.114 R)
• M15: 1,934,600 km (0.119 R)
• M16: 2,015,981 km (0.091 R)
• M17: 2,261,172 km (0.066 R)
• M18: 2,365,591 km (0.092 R)
• M19: 2,560,517 km (0.105 R)
• M20: 2,767,261 km (0.063 R)
• M21: 2,899,356 km (0.118 R)
• M22: 2,979,690 km (0.12 R)
• M23: 3,053,891 km (0.096 R)
• M24: 3,378,219 km (0.107 R)
• M25: 3,484,134 km (0.069 R)
• M26: 3,562,524 km (0.052 R)
• M27: 3,634,331 km (0.109 R)
• M28: 3,713,767 km (0.068 R)
• M29: 3,859,924 km (0.069 R)
• M30: 3,970,776 km (0.118 R)
• M31: 4,082,675 km (0.097 R)
• M32: 4,180,512 km (0.058 R)
• M33: 4,401,618 km (0.105 R)
• M34: 4,533,115 km (0.08 R)
• M35: 4,618,834 km (0.104 R)
• M36: 4,784,140 km (0.114 R)
• M37: 4,911,448 km (0.053 R)
• M38: 5,007,639 km (0.082 R)
• M39: 5,128,664 km (0.12 R)
• M40: 5,340,943 km (0.097 R)
• M41: 5,464,810 km (0.081 R)
• M42: 5,564,442 km (0.097 R)
• M43: 5,639,690 km (0.051 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 690.7

Radius: 9.2

Gravity: 8.16 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 0.71 AU - 0.93 AU

Year: 513 Days

Day: 5.7 Hours

Environment

Temp: -156 °C

Axial Tilt: 37.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (53)

Outer Limit: 71,064,921 km

• M1: 115,041 km (0.059 R)
• M2: 264,639 km (0.119 R)
• M3: 352,153 km (0.065 R)
• M4: 437,723 km (0.087 R)
• M5: 508,334 km (0.065 R)
• M6: 583,432 km (0.093 R)
• M7: 641,476 km (0.106 R)
• M8: 782,397 km (0.101 R)
• M9: 866,471 km (0.082 R)
• M10: 943,813 km (0.104 R)
• M11: 1,132,306 km (0.074 R)
• M12: 1,223,112 km (0.076 R)
• M13: 1,327,532 km (0.117 R)
• M14: 1,412,204 km (0.107 R)
• M15: 1,539,811 km (0.067 R)
• M16: 1,671,457 km (0.116 R)
• M17: 1,738,626 km (0.074 R)
• M18: 2,062,207 km (0.112 R)
• M19: 2,227,961 km (0.064 R)
• M20: 2,336,270 km (0.096 R)
• M21: 2,453,405 km (0.08 R)
• M22: 2,787,457 km (0.108 R)
• M23: 2,934,063 km (0.082 R)
• M24: 3,083,212 km (0.087 R)
• M25: 3,143,650 km (0.091 R)
• M26: 3,296,239 km (0.061 R)
• M27: 3,475,009 km (0.11 R)
• M28: 3,553,697 km (0.046 R)
• M29: 3,617,127 km (0.028 R)
• M30: 3,712,870 km (0.108 R)
• M31: 3,777,197 km (0.094 R)
• M32: 3,841,973 km (0.082 R)
• M33: 3,997,255 km (0.05 R)
• M34: 4,079,833 km (0.079 R)
• M35: 4,137,877 km (0.091 R)
• M36: 4,229,880 km (0.104 R)
• M37: 4,501,101 km (0.119 R)
• M38: 4,613,000 km (0.1 R)
• M39: 4,725,797 km (0.095 R)
• M40: 4,989,538 km (0.071 R)
• M41: 5,132,254 km (0.076 R)
• M42: 5,231,138 km (0.109 R)
• M43: 5,494,879 km (0.053 R)
• M44: 5,577,607 km (0.114 R)
• M45: 5,679,334 km (0.079 R)
• M46: 5,837,758 km (0.116 R)
• M47: 5,912,856 km (0.033 R)
• M48: 5,978,829 km (0.1 R)
• M49: 6,120,946 km (0.115 R)
• M50: 6,273,836 km (0.087 R)
• M51: 6,379,601 km (0.113 R)
• M52: 6,505,413 km (0.063 R)
• M53: 6,583,353 km (0.118 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 396.7

Radius: 12.1

Gravity: 2.71 G

Time & Orbit

Eccentricity (e): 0.133

Orbit Range: 0.91 AU - 1.19 AU

Year: 743 Days

Day: 8.2 Hours

Environment

Temp: -172 °C

Axial Tilt: 13.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (48)

Outer Limit: 71,064,921 km

• M1: 155,432 km (0.025 R)
• M2: 267,631 km (0.084 R)
• M3: 356,043 km (0.055 R)
• M4: 481,855 km (0.052 R)
• M5: 568,023 km (0.087 R)
• M6: 651,948 km (0.055 R)
• M7: 768,484 km (0.099 R)
• M8: 932,444 km (0.093 R)
• M9: 1,024,446 km (0.101 R)
• M10: 1,125,126 km (0.084 R)
• M11: 1,212,640 km (0.053 R)
• M12: 1,556,566 km (0.085 R)
• M13: 1,736,981 km (0.092 R)
• M14: 1,833,172 km (0.097 R)
• M15: 1,957,638 km (0.105 R)
• M16: 2,180,688 km (0.119 R)
• M17: 2,263,865 km (0.076 R)
• M18: 2,405,085 km (0.071 R)
• M19: 2,483,923 km (0.117 R)
• M20: 2,689,022 km (0.118 R)
• M21: 2,861,508 km (0.091 R)
• M22: 3,014,696 km (0.063 R)
• M23: 3,100,117 km (0.105 R)
• M24: 3,305,365 km (0.095 R)
• M25: 3,409,635 km (0.044 R)
• M26: 3,515,101 km (0.037 R)
• M27: 3,704,342 km (0.11 R)
• M28: 3,787,668 km (0.047 R)
• M29: 3,947,888 km (0.044 R)
• M30: 4,127,405 km (0.111 R)
• M31: 4,248,729 km (0.079 R)
• M32: 4,397,729 km (0.106 R)
• M33: 4,584,128 km (0.063 R)
• M34: 4,709,790 km (0.046 R)
• M35: 4,791,171 km (0.096 R)
• M36: 5,001,506 km (0.106 R)
• M37: 5,112,507 km (0.061 R)
• M38: 5,205,557 km (0.082 R)
• M39: 5,308,630 km (0.094 R)
• M40: 5,459,873 km (0.096 R)
• M41: 5,564,592 km (0.044 R)
• M42: 5,689,207 km (0.073 R)
• M43: 5,824,593 km (0.116 R)
• M44: 5,912,108 km (0.105 R)
• M45: 6,237,034 km (0.117 R)
• M46: 6,487,012 km (0.117 R)
• M47: 6,720,086 km (0.073 R)
• M48: 6,811,939 km (0.078 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 863.5

Radius: 13

Gravity: 5.11 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 0.91 AU - 1.49 AU

Year: 907 Days

Day: 11.9 Hours

Environment

Temp: -180 °C

Axial Tilt: 24.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (56)

Outer Limit: 71,064,921 km

• M1: 164,258 km (0.078 R)
• M2: 283,787 km (0.104 R)
• M3: 407,804 km (0.033 R)
• M4: 542,292 km (0.064 R)
• M5: 627,563 km (0.048 R)
• M6: 718,369 km (0.112 R)
• M7: 839,094 km (0.095 R)
• M8: 1,027,737 km (0.086 R)
• M9: 1,152,352 km (0.12 R)
• M10: 1,297,163 km (0.114 R)
• M11: 1,417,589 km (0.053 R)
• M12: 1,662,332 km (0.095 R)
• M13: 1,811,032 km (0.089 R)
• M14: 1,895,555 km (0.029 R)
• M15: 2,121,896 km (0.028 R)
• M16: 2,247,708 km (0.053 R)
• M17: 2,459,688 km (0.048 R)
• M18: 2,678,400 km (0.103 R)
• M19: 2,893,821 km (0.11 R)
• M20: 2,983,580 km (0.104 R)
• M21: 3,258,690 km (0.105 R)
• M22: 3,352,339 km (0.079 R)
• M23: 3,489,071 km (0.107 R)
• M24: 3,595,585 km (0.077 R)
• M25: 3,999,349 km (0.108 R)
• M26: 4,133,539 km (0.096 R)
• M27: 4,269,224 km (0.031 R)
• M28: 4,383,367 km (0.064 R)
• M29: 4,510,226 km (0.037 R)
• M30: 4,981,759 km (0.031 R)
• M31: 5,090,068 km (0.069 R)
• M32: 5,345,880 km (0.063 R)
• M33: 5,493,982 km (0.112 R)
• M34: 5,706,261 km (0.105 R)
• M35: 5,870,370 km (0.103 R)
• M36: 5,997,678 km (0.094 R)
• M37: 6,333,076 km (0.107 R)
• M38: 6,727,715 km (0.067 R)
• M39: 6,834,379 km (0.095 R)
• M40: 7,035,737 km (0.067 R)
• M41: 7,116,969 km (0.103 R)
• M42: 7,554,992 km (0.114 R)
• M43: 7,721,494 km (0.112 R)
• M44: 7,875,281 km (0.055 R)
• M45: 8,072,451 km (0.084 R)
• M46: 8,371,347 km (0.111 R)
• M47: 8,994,722 km (0.117 R)
• M48: 9,141,776 km (0.113 R)
• M49: 9,453,389 km (0.096 R)
• M50: 9,543,147 km (0.117 R)
• M51: 9,693,194 km (0.095 R)
• M52: 9,829,029 km (0.097 R)
• M53: 9,965,462 km (0.054 R)
• M54: 10,071,976 km (0.098 R)
• M55: 10,270,791 km (0.111 R)
• M56: 10,409,169 km (0.076 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.27 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 153

Radius: 11

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 1.23 AU - 1.31 AU

Year: 988 Days

Day: 14.9 Hours

Environment

Temp: -176 °C

Axial Tilt: 24.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (51)

Outer Limit: 71,064,921 km

• M1: 137,331 km (0.098 R)
• M2: 217,366 km (0.102 R)
• M3: 376,987 km (0.112 R)
• M4: 468,989 km (0.087 R)
• M5: 544,237 km (0.055 R)
• M6: 672,293 km (0.1 R)
• M7: 746,942 km (0.049 R)
• M8: 851,511 km (0.093 R)
• M9: 1,042,248 km (0.109 R)
• M10: 1,211,444 km (0.067 R)
• M11: 1,320,650 km (0.118 R)
• M12: 1,416,991 km (0.041 R)
• M13: 1,549,385 km (0.064 R)
• M14: 1,645,726 km (0.081 R)
• M15: 1,744,162 km (0.101 R)
• M16: 1,832,724 km (0.081 R)
• M17: 1,910,814 km (0.057 R)
• M18: 2,039,318 km (0.105 R)
• M19: 2,221,678 km (0.088 R)
• M20: 2,292,288 km (0.107 R)
• M21: 2,376,661 km (0.095 R)
• M22: 2,455,499 km (0.112 R)
• M23: 2,568,895 km (0.085 R)
• M24: 2,663,590 km (0.114 R)
• M25: 2,759,333 km (0.08 R)
• M26: 2,828,597 km (0.113 R)
• M27: 2,947,676 km (0.087 R)
• M28: 3,096,975 km (0.12 R)
• M29: 3,168,932 km (0.1 R)
• M30: 3,278,138 km (0.106 R)
• M31: 3,351,591 km (0.051 R)
• M32: 3,500,141 km (0.106 R)
• M33: 3,681,304 km (0.111 R)
• M34: 3,857,979 km (0.04 R)
• M35: 4,076,841 km (0.089 R)
• M36: 4,195,771 km (0.115 R)
• M37: 4,307,820 km (0.098 R)
• M38: 4,380,525 km (0.098 R)
• M39: 4,494,219 km (0.109 R)
• M40: 4,576,049 km (0.116 R)
• M41: 4,716,372 km (0.104 R)
• M42: 4,849,813 km (0.101 R)
• M43: 4,933,738 km (0.053 R)
• M44: 5,086,178 km (0.099 R)
• M45: 5,223,060 km (0.12 R)
• M46: 5,335,109 km (0.116 R)
• M47: 5,413,199 km (0.119 R)
• M48: 5,649,863 km (0.114 R)
• M49: 5,782,706 km (0.062 R)
• M50: 5,907,770 km (0.091 R)
• M51: 6,105,987 km (0.117 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 61

Radius: 13

Gravity: 0.36 G

Time & Orbit

Eccentricity (e): 0.014

Orbit Range: 4.09 AU - 4.21 AU

Year: 5836 Days

Day: 7.6 Hours

Environment

Temp: -220 °C

Axial Tilt: 1.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (46)

Outer Limit: 71,064,921 km

• M1: 223,649 km (0.111 R)
• M2: 347,217 km (0.097 R)
• M3: 671,994 km (0.072 R)
• M4: 862,731 km (0.077 R)
• M5: 1,152,652 km (0.086 R)
• M6: 1,366,876 km (0.084 R)
• M7: 1,494,034 km (0.11 R)
• M8: 1,697,786 km (0.082 R)
• M9: 1,867,580 km (0.114 R)
• M10: 1,998,777 km (0.082 R)
• M11: 2,213,001 km (0.08 R)
• M12: 2,352,427 km (0.087 R)
• M13: 2,518,779 km (0.087 R)
• M14: 2,664,488 km (0.091 R)
• M15: 2,750,806 km (0.06 R)
• M16: 2,901,152 km (0.09 R)
• M17: 3,002,878 km (0.119 R)
• M18: 3,832,249 km (0.066 R)
• M19: 4,143,263 km (0.05 R)
• M20: 4,729,537 km (0.059 R)
• M21: 5,233,233 km (0.057 R)
• M22: 5,499,367 km (0.115 R)
• M23: 5,770,139 km (0.097 R)
• M24: 6,743,573 km (0.084 R)
• M25: 6,947,774 km (0.096 R)
• M26: 7,432,471 km (0.049 R)
• M27: 7,520,135 km (0.084 R)
• M28: 7,749,768 km (0.037 R)
• M29: 8,784,088 km (0.106 R)
• M30: 9,157,334 km (0.095 R)
• M31: 9,326,978 km (0.03 R)
• M32: 9,440,673 km (0.108 R)
• M33: 9,823,045 km (0.065 R)
• M34: 10,171,458 km (0.115 R)
• M35: 10,721,679 km (0.109 R)
• M36: 10,900,598 km (0.104 R)
• M37: 11,443,340 km (0.096 R)
• M38: 11,524,571 km (0.043 R)
• M39: 11,933,273 km (0.093 R)
• M40: 12,576,244 km (0.092 R)
• M41: 12,828,167 km (0.072 R)
• M42: 12,933,634 km (0.072 R)
• M43: 13,145,464 km (0.075 R)
• M44: 13,315,706 km (0.032 R)
• M45: 13,572,416 km (0.116 R)
• M46: 13,982,464 km (0.101 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.09 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 456.1

Radius: 6.1

Gravity: 12.26 G

Time & Orbit

Eccentricity (e): 0.001

Orbit Range: 10.08 AU - 10.1 AU

Year: 22123 Days

Day: 18.2 Hours

Environment

Temp: -241 °C

Axial Tilt: 9.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (90)

Outer Limit: 71,064,921 km

• M1: 276,606 km (0.042 R)
• M2: 426,504 km (0.069 R)
• M3: 622,626 km (0.117 R)
• M4: 708,795 km (0.083 R)
• M5: 893,398 km (0.077 R)
• M6: 1,447,359 km (0.116 R)
• M7: 1,533,977 km (0.088 R)
• M8: 3,403,202 km (0.092 R)
• M9: 4,534,311 km (0.114 R)
• M10: 5,095,603 km (0.119 R)
• M11: 6,001,567 km (0.036 R)
• M12: 6,425,378 km (0.111 R)
• M13: 6,664,884 km (0.07 R)
• M14: 7,005,219 km (0.115 R)
• M15: 7,957,410 km (0.109 R)
• M16: 8,370,300 km (0.068 R)
• M17: 8,631,947 km (0.064 R)
• M18: 9,487,198 km (0.109 R)
• M19: 10,819,965 km (0.107 R)
• M20: 11,624,054 km (0.12 R)
• M21: 12,151,237 km (0.078 R)
• M22: 13,046,879 km (0.105 R)
• M23: 14,025,548 km (0.087 R)
• M24: 14,087,631 km (0.081 R)
• M25: 14,461,177 km (0.09 R)
• M26: 14,775,034 km (0.076 R)
• M27: 15,345,600 km (0.093 R)
• M28: 16,312,601 km (0.089 R)
• M29: 16,704,846 km (0.098 R)
• M30: 16,902,166 km (0.044 R)
• M31: 17,034,111 km (0.091 R)
• M32: 17,565,483 km (0.103 R)
• M33: 17,766,094 km (0.106 R)
• M34: 19,675,112 km (0.091 R)
• M35: 19,744,525 km (0.07 R)
• M36: 20,724,391 km (0.078 R)
• M37: 20,795,002 km (0.108 R)
• M38: 22,876,656 km (0.062 R)
• M39: 24,948,736 km (0.082 R)
• M40: 26,159,432 km (0.064 R)
• M41: 27,621,900 km (0.12 R)
• M42: 27,699,542 km (0.115 R)
• M43: 28,089,244 km (0.104 R)
• M44: 28,637,670 km (0.098 R)
• M45: 29,904,614 km (0.098 R)
• M46: 29,984,500 km (0.095 R)
• M47: 30,224,305 km (0.113 R)
• M48: 32,410,977 km (0.109 R)
• M49: 33,068,609 km (0.069 R)
• M50: 33,233,765 km (0.085 R)
• M51: 33,481,799 km (0.098 R)
• M52: 33,564,676 km (0.092 R)
• M53: 33,813,756 km (0.084 R)
• M54: 33,980,109 km (0.097 R)
• M55: 35,573,775 km (0.055 R)
• M56: 37,793,808 km (0.113 R)
• M57: 40,410,424 km (0.11 R)
• M58: 40,940,748 km (0.105 R)
• M59: 41,740,648 km (0.072 R)
• M60: 42,187,198 km (0.117 R)
• M61: 44,534,688 km (0.041 R)
• M62: 46,646,411 km (0.095 R)
• M63: 47,017,115 km (0.095 R)
• M64: 47,109,865 km (0.097 R)
• M65: 47,947,763 km (0.051 R)
• M66: 49,072,739 km (0.067 R)
• M67: 50,776,360 km (0.119 R)
• M68: 51,157,535 km (0.055 R)
• M69: 51,348,422 km (0.086 R)
• M70: 52,306,746 km (0.103 R)
• M71: 52,981,133 km (0.097 R)
• M72: 55,119,186 km (0.064 R)
• M73: 55,217,023 km (0.086 R)
• M74: 55,707,255 km (0.066 R)
• M75: 56,001,963 km (0.109 R)
• M76: 56,988,411 km (0.048 R)
• M77: 58,978,213 km (0.097 R)
• M78: 59,078,294 km (0.081 R)
• M79: 59,780,506 km (0.055 R)
• M80: 60,788,496 km (0.092 R)
• M81: 61,193,159 km (0.115 R)
• M82: 61,598,868 km (0.083 R)
• M83: 61,802,022 km (0.08 R)
• M84: 62,208,928 km (0.076 R)
• M85: 63,025,583 km (0.088 R)
• M86: 63,743,054 km (0.108 R)
• M87: 65,496,790 km (0.085 R)
• M88: 66,431,627 km (0.105 R)
• M89: 66,639,867 km (0.108 R)
• M90: 70,958,459 km (0.106 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: 301 - 16,593 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit