🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.75 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.07

Radius: 1.75

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 0.59 AU - 0.91 AU

Year: 234 Days

Day: 14.5 Hours

Environment

Temp: 123 °C

Axial Tilt: 0.6 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.85 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.69

Radius: 1.23

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 0.75 AU - 0.95 AU

Year: 282 Days

Day: 39.6 Hours

Environment

Temp: 95 °C

Axial Tilt: 44.8 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 1.72 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.14

Radius: 1.05

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 1.46 AU - 1.98 AU

Year: 812 Days

Day: 30.3 Hours

Environment

Temp: -54 °C

Axial Tilt: 43.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 2.82 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.84

Radius: 1.71

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 2.43 AU - 3.21 AU

Year: 1704 Days

Day: 47.9 Hours

Environment

Temp: -102 °C

Axial Tilt: 104.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Gas Giant

Semi-Major Axis: 7.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 864.7

Radius: 11.7

Gravity: 6.32 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 6.08 AU - 9.36 AU

Year: 7720 Days

Day: 6.5 Hours

Environment

Temp: -162 °C

Axial Tilt: 170.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (82)

Outer Limit: 109,784,888 km

• M1: 152,590 km (0.104 R)
• M2: 241,750 km (0.077 R)
• M3: 382,671 km (0.099 R)
• M4: 546,481 km (0.09 R)
• M5: 721,211 km (0.096 R)
• M6: 1,020,108 km (0.111 R)
• M7: 1,110,315 km (0.082 R)
• M8: 1,299,108 km (0.082 R)
• M9: 1,437,785 km (0.116 R)
• M10: 1,666,221 km (0.061 R)
• M11: 1,817,913 km (0.113 R)
• M12: 2,276,730 km (0.106 R)
• M13: 2,771,301 km (0.088 R)
• M14: 3,217,850 km (0.119 R)
• M15: 4,002,491 km (0.045 R)
• M16: 4,207,739 km (0.094 R)
• M17: 4,476,866 km (0.119 R)
• M18: 5,190,149 km (0.116 R)
• M19: 5,543,947 km (0.08 R)
• M20: 5,872,464 km (0.045 R)
• M21: 6,377,058 km (0.116 R)
• M22: 7,572,195 km (0.115 R)
• M23: 8,456,917 km (0.112 R)
• M24: 9,452,192 km (0.089 R)
• M25: 9,884,380 km (0.104 R)
• M26: 10,003,460 km (0.069 R)
• M27: 10,323,151 km (0.045 R)
• M28: 10,403,634 km (0.111 R)
• M29: 10,646,282 km (0.116 R)
• M30: 11,219,691 km (0.115 R)
• M31: 11,887,346 km (0.109 R)
• M32: 12,311,157 km (0.096 R)
• M33: 12,439,362 km (0.115 R)
• M34: 12,696,970 km (0.097 R)
• M35: 12,999,756 km (0.112 R)
• M36: 13,789,333 km (0.082 R)
• M37: 14,684,826 km (0.109 R)
• M38: 15,276,935 km (0.047 R)
• M39: 15,784,071 km (0.096 R)
• M40: 17,771,030 km (0.11 R)
• M41: 17,915,991 km (0.118 R)
• M42: 18,109,869 km (0.042 R)
• M43: 18,255,727 km (0.084 R)
• M44: 18,548,640 km (0.077 R)
• M45: 18,695,545 km (0.042 R)
• M46: 19,386,837 km (0.112 R)
• M47: 19,985,976 km (0.093 R)
• M48: 21,561,990 km (0.119 R)
• M49: 22,443,121 km (0.114 R)
• M50: 23,124,839 km (0.112 R)
• M51: 23,283,113 km (0.094 R)
• M52: 23,600,859 km (0.027 R)
• M53: 23,973,358 km (0.066 R)
• M54: 24,080,021 km (0.117 R)
• M55: 24,186,984 km (0.085 R)
• M56: 24,616,330 km (0.088 R)
• M57: 25,156,528 km (0.088 R)
• M58: 28,875,381 km (0.104 R)
• M59: 29,273,760 km (0.097 R)
• M60: 29,960,863 km (0.095 R)
• M61: 30,075,904 km (0.075 R)
• M62: 31,118,003 km (0.078 R)
• M63: 31,292,733 km (0.115 R)
• M64: 31,643,390 km (0.099 R)
• M65: 33,356,436 km (0.068 R)
• M66: 33,595,044 km (0.095 R)
• M67: 33,774,412 km (0.075 R)
• M68: 34,857,201 km (0.065 R)
• M69: 35,281,461 km (0.081 R)
• M70: 35,585,444 km (0.116 R)
• M71: 36,441,293 km (0.076 R)
• M72: 37,365,958 km (0.094 R)
• M73: 38,548,080 km (0.077 R)
• M74: 38,673,294 km (0.118 R)
• M75: 40,566,903 km (0.113 R)
• M76: 41,140,761 km (0.112 R)
• M77: 41,396,723 km (0.118 R)
• M78: 41,589,106 km (0.114 R)
• M79: 41,910,292 km (0.109 R)
• M80: 42,425,807 km (0.11 R)
• M81: 43,138,341 km (0.085 R)
• M82: 43,268,192 km (0.104 R)

Planet 6 - Gas Giant

Semi-Major Axis: 7.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 90.8

Radius: 13.1

Gravity: 0.53 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 7.52 AU - 8.44 AU

Year: 8113 Days

Day: 11.1 Hours

Environment

Temp: -162 °C

Axial Tilt: 33.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (64)

Outer Limit: 109,784,888 km

• M1: 180,864 km (0.117 R)
• M2: 283,638 km (0.077 R)
• M3: 480,808 km (0.12 R)
• M4: 685,757 km (0.111 R)
• M5: 780,602 km (0.116 R)
• M6: 964,308 km (0.074 R)
• M7: 1,197,681 km (0.084 R)
• M8: 1,279,810 km (0.061 R)
• M9: 1,400,834 km (0.066 R)
• M10: 1,628,522 km (0.113 R)
• M11: 1,733,839 km (0.068 R)
• M12: 1,951,654 km (0.103 R)
• M13: 2,135,360 km (0.049 R)
• M14: 2,251,448 km (0.115 R)
• M15: 2,414,510 km (0.063 R)
• M16: 2,911,474 km (0.049 R)
• M17: 3,073,488 km (0.069 R)
• M18: 3,629,394 km (0.103 R)
• M19: 4,017,600 km (0.118 R)
• M20: 4,125,909 km (0.12 R)
• M21: 4,643,967 km (0.063 R)
• M22: 4,738,662 km (0.03 R)
• M23: 4,988,191 km (0.091 R)
• M24: 5,124,176 km (0.072 R)
• M25: 5,301,001 km (0.11 R)
• M26: 5,560,104 km (0.059 R)
• M27: 5,802,901 km (0.115 R)
• M28: 6,257,380 km (0.077 R)
• M29: 6,341,155 km (0.119 R)
• M30: 6,446,471 km (0.069 R)
• M31: 6,552,536 km (0.075 R)
• M32: 7,222,436 km (0.064 R)
• M33: 7,310,549 km (0.07 R)
• M34: 8,028,020 km (0.112 R)
• M35: 8,604,122 km (0.069 R)
• M36: 8,721,107 km (0.085 R)
• M37: 9,146,115 km (0.118 R)
• M38: 9,602,239 km (0.098 R)
• M39: 9,820,951 km (0.041 R)
• M40: 10,016,625 km (0.063 R)
• M41: 10,561,759 km (0.052 R)
• M42: 10,863,199 km (0.104 R)
• M43: 10,964,327 km (0.117 R)
• M44: 11,320,669 km (0.029 R)
• M45: 11,551,798 km (0.118 R)
• M46: 11,758,542 km (0.084 R)
• M47: 11,862,363 km (0.116 R)
• M48: 12,597,786 km (0.093 R)
• M49: 13,375,097 km (0.025 R)
• M50: 14,584,147 km (0.074 R)
• M51: 14,695,747 km (0.072 R)
• M52: 16,462,498 km (0.105 R)
• M53: 16,578,735 km (0.114 R)
• M54: 17,193,732 km (0.109 R)
• M55: 17,459,717 km (0.057 R)
• M56: 18,205,313 km (0.116 R)
• M57: 18,295,520 km (0.088 R)
• M58: 18,385,878 km (0.106 R)
• M59: 18,476,384 km (0.094 R)
• M60: 19,389,380 km (0.089 R)
• M61: 19,727,920 km (0.104 R)
• M62: 19,851,488 km (0.099 R)
• M63: 20,254,804 km (0.079 R)
• M64: 20,912,137 km (0.096 R)

Planet 7 - Gas Giant

Semi-Major Axis: 8.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 99.9

Radius: 14.9

Gravity: 0.45 G

Time & Orbit

Eccentricity (e): 0.114

Orbit Range: 7.79 AU - 9.79 AU

Year: 9379 Days

Day: 11.9 Hours

Environment

Temp: -157 °C

Axial Tilt: 31.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (70)

Outer Limit: 109,784,888 km

• M1: 187,446 km (0.118 R)
• M2: 342,430 km (0.11 R)
• M3: 639,082 km (0.041 R)
• M4: 769,382 km (0.105 R)
• M5: 910,004 km (0.104 R)
• M6: 1,072,467 km (0.083 R)
• M7: 1,245,552 km (0.066 R)
• M8: 1,388,418 km (0.109 R)
• M9: 1,663,379 km (0.07 R)
• M10: 1,764,058 km (0.084 R)
• M11: 1,956,591 km (0.053 R)
• M12: 2,063,254 km (0.116 R)
• M13: 2,172,011 km (0.08 R)
• M14: 2,363,198 km (0.105 R)
• M15: 2,762,773 km (0.082 R)
• M16: 2,865,996 km (0.093 R)
• M17: 3,201,993 km (0.092 R)
• M18: 3,347,402 km (0.109 R)
• M19: 3,532,305 km (0.055 R)
• M20: 3,720,649 km (0.085 R)
• M21: 3,931,731 km (0.084 R)
• M22: 4,226,140 km (0.092 R)
• M23: 4,386,210 km (0.081 R)
• M24: 5,606,330 km (0.068 R)
• M25: 5,716,284 km (0.038 R)
• M26: 7,234,703 km (0.102 R)
• M27: 7,547,961 km (0.07 R)
• M28: 7,767,570 km (0.098 R)
• M29: 8,922,615 km (0.083 R)
• M30: 9,415,391 km (0.07 R)
• M31: 9,520,259 km (0.079 R)
• M32: 10,023,805 km (0.092 R)
• M33: 10,292,334 km (0.084 R)
• M34: 10,508,951 km (0.085 R)
• M35: 10,754,441 km (0.066 R)
• M36: 11,001,727 km (0.102 R)
• M37: 11,334,582 km (0.071 R)
• M38: 11,502,281 km (0.073 R)
• M39: 11,811,799 km (0.082 R)
• M40: 12,381,617 km (0.094 R)
• M41: 12,669,892 km (0.103 R)
• M42: 12,785,980 km (0.087 R)
• M43: 13,018,904 km (0.084 R)
• M44: 13,312,116 km (0.09 R)
• M45: 13,607,572 km (0.109 R)
• M46: 13,845,433 km (0.117 R)
• M47: 14,084,789 km (0.102 R)
• M48: 14,355,561 km (0.104 R)
• M49: 14,749,901 km (0.1 R)
• M50: 15,025,012 km (0.09 R)
• M51: 15,178,499 km (0.114 R)
• M52: 15,332,585 km (0.115 R)
• M53: 15,518,236 km (0.066 R)
• M54: 15,798,134 km (0.089 R)
• M55: 16,048,261 km (0.087 R)
• M56: 16,362,716 km (0.095 R)
• M57: 16,774,708 km (0.095 R)
• M58: 17,350,810 km (0.108 R)
• M59: 17,705,955 km (0.096 R)
• M60: 18,031,031 km (0.066 R)
• M61: 18,227,005 km (0.104 R)
• M62: 18,852,324 km (0.102 R)
• M63: 19,350,933 km (0.056 R)
• M64: 19,854,031 km (0.091 R)
• M65: 21,458,019 km (0.108 R)
• M66: 22,048,333 km (0.11 R)
• M67: 22,468,403 km (0.099 R)
• M68: 22,785,102 km (0.109 R)
• M69: 23,779,928 km (0.038 R)
• M70: 24,066,857 km (0.073 R)

Planet 8 - Ice Giant

Semi-Major Axis: 16.02 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 139.6

Radius: 3.3

Gravity: 12.82 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 14.74 AU - 17.3 AU

Year: 23076 Days

Day: 17.4 Hours

Environment

Temp: -195 °C

Axial Tilt: 33.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (89)

Outer Limit: 109,784,888 km

• M1: 76,295 km (0.117 R)
• M2: 97,837 km (0.081 R)
• M3: 131,497 km (0.072 R)
• M4: 693,237 km (0.07 R)
• M5: 1,392,158 km (0.088 R)
• M6: 1,414,448 km (0.111 R)
• M7: 2,036,027 km (0.111 R)
• M8: 2,216,143 km (0.053 R)
• M9: 2,347,939 km (0.096 R)
• M10: 2,374,567 km (0.118 R)
• M11: 2,482,277 km (0.082 R)
• M12: 2,646,835 km (0.11 R)
• M13: 3,369,692 km (0.062 R)
• M14: 3,430,130 km (0.032 R)
• M15: 3,737,104 km (0.088 R)
• M16: 4,575,900 km (0.037 R)
• M17: 4,609,260 km (0.082 R)
• M18: 5,016,166 km (0.081 R)
• M19: 5,363,981 km (0.059 R)
• M20: 5,469,897 km (0.074 R)
• M21: 6,082,799 km (0.053 R)
• M22: 6,267,104 km (0.098 R)
• M23: 6,304,204 km (0.098 R)
• M24: 6,453,353 km (0.11 R)
• M25: 6,528,301 km (0.038 R)
• M26: 6,869,385 km (0.087 R)
• M27: 7,568,755 km (0.094 R)
• M28: 7,647,892 km (0.111 R)
• M29: 7,727,179 km (0.093 R)
• M30: 8,700,911 km (0.106 R)
• M31: 9,117,841 km (0.109 R)
• M32: 9,927,763 km (0.096 R)
• M33: 9,971,147 km (0.074 R)
• M34: 10,188,363 km (0.09 R)
• M35: 10,583,451 km (0.09 R)
• M36: 12,166,645 km (0.086 R)
• M37: 12,212,871 km (0.039 R)
• M38: 12,679,317 km (0.114 R)
• M39: 14,307,840 km (0.115 R)
• M40: 14,848,636 km (0.119 R)
• M41: 15,146,336 km (0.059 R)
• M42: 15,596,775 km (0.117 R)
• M43: 15,798,283 km (0.036 R)
• M44: 15,899,411 km (0.074 R)
• M45: 15,950,125 km (0.057 R)
• M46: 16,974,122 km (0.112 R)
• M47: 17,025,883 km (0.091 R)
• M48: 17,703,412 km (0.058 R)
• M49: 17,755,921 km (0.075 R)
• M50: 17,861,088 km (0.096 R)
• M51: 17,966,405 km (0.104 R)
• M52: 18,336,809 km (0.097 R)
• M53: 18,549,538 km (0.072 R)
• M54: 22,232,188 km (0.114 R)
• M55: 22,629,670 km (0.077 R)
• M56: 24,010,009 km (0.116 R)
• M57: 25,181,062 km (0.081 R)
• M58: 26,791,034 km (0.091 R)
• M59: 26,972,047 km (0.094 R)
• M60: 27,213,947 km (0.088 R)
• M61: 27,274,534 km (0.083 R)
• M62: 27,882,799 km (0.112 R)
• M63: 29,734,522 km (0.032 R)
• M64: 32,264,371 km (0.036 R)
• M65: 33,036,745 km (0.093 R)
• M66: 34,141,226 km (0.119 R)
• M67: 35,920,094 km (0.105 R)
• M68: 36,787,313 km (0.06 R)
• M69: 36,921,353 km (0.086 R)
• M70: 37,324,370 km (0.1 R)
• M71: 38,746,597 km (0.093 R)
• M72: 39,224,562 km (0.119 R)
• M73: 40,324,405 km (0.038 R)
• M74: 40,393,519 km (0.078 R)
• M75: 40,808,803 km (0.068 R)
• M76: 41,155,870 km (0.092 R)
• M77: 41,713,421 km (0.116 R)
• M78: 42,484,000 km (0.098 R)
• M79: 43,188,606 km (0.03 R)
• M80: 44,609,487 km (0.07 R)
• M81: 45,110,340 km (0.072 R)
• M82: 45,181,998 km (0.088 R)
• M83: 46,479,310 km (0.079 R)
• M84: 46,624,121 km (0.098 R)
• M85: 46,841,786 km (0.047 R)
• M86: 47,059,750 km (0.116 R)
• M87: 48,154,657 km (0.093 R)
• M88: 48,448,018 km (0.088 R)
• M89: 48,594,924 km (0.03 R)

Planet 9 - Ice Giant

Semi-Major Axis: 19.49 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 858.3

Radius: 4.7

Gravity: 38.85 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 18.96 AU - 20.02 AU

Year: 30966 Days

Day: 23.5 Hours

Environment

Temp: -196 °C

Axial Tilt: 18.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (96)

Outer Limit: 109,784,888 km

• M1: 109,506 km (0.091 R)
• M2: 441,164 km (0.064 R)
• M3: 807,978 km (0.057 R)
• M4: 871,258 km (0.106 R)
• M5: 969,394 km (0.054 R)
• M6: 1,512,584 km (0.067 R)
• M7: 2,222,576 km (0.119 R)
• M8: 3,476,355 km (0.114 R)
• M9: 3,952,974 km (0.072 R)
• M10: 5,261,058 km (0.075 R)
• M11: 7,279,432 km (0.109 R)
• M12: 8,368,206 km (0.093 R)
• M13: 9,145,965 km (0.079 R)
• M14: 10,020,215 km (0.036 R)
• M15: 10,467,363 km (0.086 R)
• M16: 10,769,102 km (0.094 R)
• M17: 11,150,277 km (0.095 R)
• M18: 11,458,299 km (0.07 R)
• M19: 11,847,403 km (0.073 R)
• M20: 11,925,643 km (0.119 R)
• M21: 12,798,696 km (0.091 R)
• M22: 14,773,538 km (0.119 R)
• M23: 15,452,712 km (0.092 R)
• M24: 15,538,282 km (0.11 R)
• M25: 16,665,352 km (0.047 R)
• M26: 17,818,602 km (0.088 R)
• M27: 18,268,892 km (0.119 R)
• M28: 21,048,720 km (0.034 R)
• M29: 23,267,256 km (0.106 R)
• M30: 27,505,513 km (0.112 R)
• M31: 29,287,374 km (0.083 R)
• M32: 29,924,960 km (0.082 R)
• M33: 33,402,512 km (0.067 R)
• M34: 33,957,370 km (0.106 R)
• M35: 34,068,671 km (0.031 R)
• M36: 35,526,951 km (0.089 R)
• M37: 35,866,389 km (0.101 R)
• M38: 35,979,784 km (0.077 R)
• M39: 36,093,179 km (0.049 R)
• M40: 36,548,405 km (0.066 R)
• M41: 36,890,985 km (0.069 R)
• M42: 37,120,019 km (0.068 R)
• M43: 39,435,943 km (0.096 R)
• M44: 41,084,811 km (0.041 R)
• M45: 42,755,969 km (0.12 R)
• M46: 43,963,224 km (0.078 R)
• M47: 45,794,900 km (0.101 R)
• M48: 45,917,870 km (0.106 R)
• M49: 46,411,094 km (0.075 R)
• M50: 49,911,534 km (0.111 R)
• M51: 51,054,761 km (0.104 R)
• M52: 52,206,366 km (0.099 R)
• M53: 53,885,003 km (0.051 R)
• M54: 57,295,087 km (0.118 R)
• M55: 59,026,084 km (0.114 R)
• M56: 59,293,864 km (0.103 R)
• M57: 62,402,807 km (0.063 R)
• M58: 63,222,603 km (0.081 R)
• M59: 65,980,590 km (0.116 R)
• M60: 66,397,669 km (0.096 R)
• M61: 67,794,314 km (0.118 R)
• M62: 68,074,661 km (0.027 R)
• M63: 68,355,605 km (0.062 R)
• M64: 70,190,573 km (0.088 R)
• M65: 70,616,328 km (0.112 R)
• M66: 71,042,982 km (0.116 R)
• M67: 76,812,373 km (0.075 R)
• M68: 77,251,144 km (0.12 R)
• M69: 77,690,662 km (0.102 R)
• M70: 78,131,078 km (0.094 R)
• M71: 78,425,188 km (0.073 R)
• M72: 79,161,957 km (0.103 R)
• M73: 79,457,263 km (0.098 R)
• M74: 81,982,476 km (0.03 R)
• M75: 85,289,187 km (0.082 R)
• M76: 86,958,849 km (0.077 R)
• M77: 88,945,957 km (0.093 R)
• M78: 89,099,445 km (0.113 R)
• M79: 90,639,106 km (0.09 R)
• M80: 92,653,591 km (0.097 R)
• M81: 93,276,516 km (0.05 R)
• M82: 93,744,458 km (0.047 R)
• M83: 94,213,298 km (0.101 R)
• M84: 94,996,443 km (0.118 R)
• M85: 95,310,299 km (0.099 R)
• M86: 96,569,165 km (0.102 R)
• M87: 96,884,667 km (0.039 R)
• M88: 97,675,143 km (0.118 R)
• M89: 101,018,206 km (0.06 R)
• M90: 102,140,789 km (0.112 R)
• M91: 103,267,560 km (0.118 R)
• M92: 105,208,742 km (0.114 R)
• M93: 105,695,982 km (0.101 R)
• M94: 107,325,252 km (0.11 R)
• M95: 108,962,900 km (0.102 R)
• M96: 109,127,159 km (0.117 R)

Kuiper Belt

Range: 30.5 - 52.5 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 383 - 11,659 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit