🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.13

Radius: 1.58

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 0.7 AU - 0.92 AU

Year: 316 Days

Day: 34.1 Hours

Environment

Temp: -41 °C

Axial Tilt: 37.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 60,524,155 km

• M1: 183,257 km (0.101 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.24 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.46

Radius: 1.64

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 1 AU - 1.48 AU

Year: 599 Days

Day: 28.2 Hours

Environment

Temp: -84 °C

Axial Tilt: 31.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 60,524,155 km

• M1: 841,937 km (0.088 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.84 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.53

Radius: 0.78

Gravity: 0.87 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 1.78 AU - 1.9 AU

Year: 1082 Days

Day: 19.3 Hours

Environment

Temp: -114 °C

Axial Tilt: 46.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 2.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 459

Radius: 10.9

Gravity: 3.86 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 2.46 AU - 3.18 AU

Year: 2053 Days

Day: 6.5 Hours

Environment

Temp: -133 °C

Axial Tilt: 3.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (69)

Outer Limit: 60,524,155 km

• M1: 137,929 km (0.071 R)
• M2: 206,894 km (0.075 R)
• M3: 297,251 km (0.118 R)
• M4: 386,262 km (0.115 R)
• M5: 592,856 km (0.084 R)
• M6: 766,988 km (0.054 R)
• M7: 984,055 km (0.042 R)
• M8: 1,113,607 km (0.032 R)
• M9: 1,203,216 km (0.103 R)
• M10: 1,323,642 km (0.071 R)
• M11: 1,557,015 km (0.112 R)
• M12: 1,899,893 km (0.04 R)
• M13: 2,255,188 km (0.086 R)
• M14: 2,393,865 km (0.117 R)
• M15: 2,559,320 km (0.047 R)
• M16: 2,740,932 km (0.063 R)
• M17: 2,914,316 km (0.102 R)
• M18: 3,116,872 km (0.094 R)
• M19: 3,350,544 km (0.072 R)
• M20: 3,522,880 km (0.118 R)
• M21: 3,807,415 km (0.079 R)
• M22: 3,904,056 km (0.063 R)
• M23: 4,071,456 km (0.078 R)
• M24: 4,241,399 km (0.052 R)
• M25: 4,341,629 km (0.08 R)
• M26: 4,442,608 km (0.08 R)
• M27: 5,034,866 km (0.115 R)
• M28: 5,186,857 km (0.104 R)
• M29: 5,636,249 km (0.066 R)
• M30: 5,730,795 km (0.06 R)
• M31: 5,953,546 km (0.11 R)
• M32: 6,114,364 km (0.083 R)
• M33: 6,195,446 km (0.097 R)
• M34: 6,292,984 km (0.102 R)
• M35: 6,440,488 km (0.08 R)
• M36: 6,856,070 km (0.11 R)
• M37: 7,041,721 km (0.117 R)
• M38: 7,263,425 km (0.06 R)
• M39: 7,573,991 km (0.109 R)
• M40: 7,765,925 km (0.062 R)
• M41: 7,836,236 km (0.099 R)
• M42: 8,030,414 km (0.097 R)
• M43: 8,261,991 km (0.104 R)
• M44: 8,333,649 km (0.069 R)
• M45: 8,459,610 km (0.091 R)
• M46: 8,568,218 km (0.106 R)
• M47: 8,823,133 km (0.094 R)
• M48: 9,025,240 km (0.104 R)
• M49: 9,210,292 km (0.118 R)
• M50: 9,359,292 km (0.098 R)
• M51: 9,754,080 km (0.085 R)
• M52: 9,848,925 km (0.072 R)
• M53: 10,404,981 km (0.115 R)
• M54: 10,521,368 km (0.059 R)
• M55: 11,089,690 km (0.114 R)
• M56: 11,447,528 km (0.087 R)
• M57: 11,567,655 km (0.097 R)
• M58: 11,910,384 km (0.086 R)
• M59: 12,154,229 km (0.058 R)
• M60: 12,461,503 km (0.059 R)
• M61: 12,585,070 km (0.054 R)
• M62: 12,791,964 km (0.084 R)
• M63: 13,041,793 km (0.054 R)
• M64: 13,167,305 km (0.037 R)
• M65: 13,293,117 km (0.055 R)
• M66: 13,673,245 km (0.094 R)
• M67: 14,035,571 km (0.095 R)
• M68: 14,142,833 km (0.11 R)
• M69: 14,314,871 km (0.098 R)

Planet 5 - Ice Giant

Semi-Major Axis: 10.77 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 323.4

Radius: 3.1

Gravity: 33.65 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 9.71 AU - 11.83 AU

Year: 15321 Days

Day: 19.7 Hours

Environment

Temp: -199 °C

Axial Tilt: 84.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (85)

Outer Limit: 60,524,155 km

• M1: 40,092 km (0.088 R)
• M2: 80,932 km (0.08 R)
• M3: 148,401 km (0.079 R)
• M4: 211,382 km (0.088 R)
• M5: 335,698 km (0.086 R)
• M6: 435,031 km (0.102 R)
• M7: 527,482 km (0.076 R)
• M8: 626,217 km (0.107 R)
• M9: 841,039 km (0.037 R)
• M10: 898,186 km (0.103 R)
• M11: 1,016,069 km (0.041 R)
• M12: 1,036,264 km (0.102 R)
• M13: 1,181,225 km (0.077 R)
• M14: 2,098,858 km (0.071 R)
• M15: 2,229,008 km (0.085 R)
• M16: 2,361,702 km (0.07 R)
• M17: 2,442,634 km (0.094 R)
• M18: 2,746,916 km (0.093 R)
• M19: 2,860,610 km (0.066 R)
• M20: 3,574,192 km (0.077 R)
• M21: 4,046,622 km (0.04 R)
• M22: 4,078,786 km (0.08 R)
• M23: 4,339,385 km (0.074 R)
• M24: 4,672,689 km (0.052 R)
• M25: 4,876,591 km (0.039 R)
• M26: 5,014,221 km (0.053 R)
• M27: 5,577,158 km (0.099 R)
• M28: 5,757,124 km (0.027 R)
• M29: 5,793,477 km (0.09 R)
• M30: 6,458,439 km (0.048 R)
• M31: 6,609,533 km (0.093 R)
• M32: 7,699,054 km (0.052 R)
• M33: 8,182,854 km (0.109 R)
• M34: 9,264,147 km (0.101 R)
• M35: 9,605,829 km (0.114 R)
• M36: 10,257,477 km (0.087 R)
• M37: 10,655,408 km (0.118 R)
• M38: 11,786,667 km (0.118 R)
• M39: 12,017,496 km (0.079 R)
• M40: 12,624,415 km (0.112 R)
• M41: 13,868,171 km (0.112 R)
• M42: 15,100,259 km (0.03 R)
• M43: 15,501,930 km (0.091 R)
• M44: 15,856,327 km (0.05 R)
• M45: 18,037,464 km (0.12 R)
• M46: 18,946,570 km (0.058 R)
• M47: 19,980,292 km (0.064 R)
• M48: 20,145,148 km (0.054 R)
• M49: 21,032,114 km (0.111 R)
• M50: 21,199,963 km (0.083 R)
• M51: 21,368,111 km (0.079 R)
• M52: 21,705,753 km (0.081 R)
• M53: 22,557,564 km (0.084 R)
• M54: 23,536,233 km (0.115 R)
• M55: 25,296,551 km (0.089 R)
• M56: 26,614,209 km (0.104 R)
• M57: 28,199,947 km (0.1 R)
• M58: 28,323,215 km (0.093 R)
• M59: 30,319,300 km (0.106 R)
• M60: 30,382,430 km (0.086 R)
• M61: 30,572,120 km (0.09 R)
• M62: 32,102,805 km (0.075 R)
• M63: 32,489,366 km (0.072 R)
• M64: 35,370,921 km (0.116 R)
• M65: 35,836,918 km (0.093 R)
• M66: 36,103,950 km (0.095 R)
• M67: 37,111,641 km (0.053 R)
• M68: 37,992,474 km (0.106 R)
• M69: 38,060,541 km (0.097 R)
• M70: 38,333,108 km (0.107 R)
• M71: 38,401,325 km (0.12 R)
• M72: 38,948,703 km (0.069 R)
• M73: 39,429,810 km (0.095 R)
• M74: 39,843,747 km (0.106 R)
• M75: 41,653,882 km (0.068 R)
• M76: 41,724,043 km (0.112 R)
• M77: 42,498,361 km (0.047 R)
• M78: 43,419,585 km (0.107 R)
• M79: 43,989,852 km (0.041 R)
• M80: 44,490,706 km (0.037 R)
• M81: 45,353,886 km (0.079 R)
• M82: 45,715,165 km (0.099 R)
• M83: 45,932,381 km (0.05 R)
• M84: 46,222,451 km (0.063 R)
• M85: 47,389,165 km (0.093 R)

Planet 6 - Ice Giant

Semi-Major Axis: 13.35 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 105.3

Radius: 5.2

Gravity: 3.89 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 11.56 AU - 15.14 AU

Year: 21144 Days

Day: 17 Hours

Environment

Temp: -205 °C

Axial Tilt: 14.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (94)

Outer Limit: 60,524,155 km

• M1: 84,224 km (0.1 R)
• M2: 127,308 km (0.087 R)
• M3: 377,585 km (0.034 R)
• M4: 639,381 km (0.088 R)
• M5: 846,874 km (0.05 R)
• M6: 914,791 km (0.114 R)
• M7: 1,056,460 km (0.059 R)
• M8: 1,281,904 km (0.072 R)
• M9: 1,501,663 km (0.107 R)
• M10: 1,711,699 km (0.094 R)
• M11: 2,324,601 km (0.094 R)
• M12: 2,396,707 km (0.113 R)
• M13: 2,742,428 km (0.029 R)
• M14: 2,947,078 km (0.059 R)
• M15: 3,290,106 km (0.077 R)
• M16: 3,425,342 km (0.041 R)
• M17: 3,729,475 km (0.111 R)
• M18: 3,813,998 km (0.107 R)
• M19: 4,071,156 km (0.099 R)
• M20: 4,304,529 km (0.045 R)
• M21: 4,363,471 km (0.068 R)
• M22: 5,123,877 km (0.114 R)
• M23: 5,186,409 km (0.06 R)
• M24: 5,407,514 km (0.047 R)
• M25: 5,535,271 km (0.116 R)
• M26: 5,761,164 km (0.087 R)
• M27: 6,831,836 km (0.047 R)
• M28: 6,935,208 km (0.088 R)
• M29: 7,178,753 km (0.087 R)
• M30: 7,213,759 km (0.103 R)
• M31: 7,319,225 km (0.099 R)
• M32: 7,889,792 km (0.047 R)
• M33: 9,111,408 km (0.107 R)
• M34: 9,339,844 km (0.056 R)
• M35: 9,531,628 km (0.107 R)
• M36: 9,686,013 km (0.117 R)
• M37: 10,509,849 km (0.087 R)
• M38: 11,560,624 km (0.03 R)
• M39: 12,223,792 km (0.09 R)
• M40: 12,349,454 km (0.096 R)
• M41: 12,433,528 km (0.091 R)
• M42: 14,022,257 km (0.096 R)
• M43: 14,595,516 km (0.113 R)
• M44: 14,684,377 km (0.106 R)
• M45: 15,537,684 km (0.091 R)
• M46: 16,222,543 km (0.103 R)
• M47: 16,731,175 km (0.095 R)
• M48: 17,104,273 km (0.053 R)
• M49: 17,385,965 km (0.082 R)
• M50: 18,962,129 km (0.071 R)
• M51: 19,156,307 km (0.119 R)
• M52: 19,841,016 km (0.073 R)
• M53: 20,683,252 km (0.078 R)
• M54: 21,284,635 km (0.098 R)
• M55: 21,335,050 km (0.076 R)
• M56: 21,638,285 km (0.078 R)
• M57: 23,330,835 km (0.076 R)
• M58: 23,486,716 km (0.099 R)
• M59: 23,538,776 km (0.029 R)
• M60: 24,166,638 km (0.112 R)
• M61: 24,219,297 km (0.085 R)
• M62: 24,482,589 km (0.109 R)
• M63: 25,921,421 km (0.113 R)
• M64: 26,082,987 km (0.1 R)
• M65: 27,004,660 km (0.109 R)
• M66: 27,992,155 km (0.1 R)
• M67: 28,213,261 km (0.091 R)
• M68: 28,935,669 km (0.058 R)
• M69: 29,215,267 km (0.042 R)
• M70: 29,551,713 km (0.11 R)
• M71: 29,664,211 km (0.091 R)
• M72: 30,512,281 km (0.087 R)
• M73: 30,682,972 km (0.103 R)
• M74: 31,139,395 km (0.106 R)
• M75: 31,770,549 km (0.046 R)
• M76: 34,455,681 km (0.09 R)
• M77: 34,514,922 km (0.1 R)
• M78: 34,989,446 km (0.088 R)
• M79: 35,168,066 km (0.085 R)
• M80: 35,765,410 km (0.112 R)
• M81: 35,825,249 km (0.102 R)
• M82: 37,091,296 km (0.1 R)
• M83: 37,151,883 km (0.063 R)
• M84: 37,455,567 km (0.117 R)
• M85: 37,577,340 km (0.117 R)
• M86: 37,760,148 km (0.1 R)
• M87: 37,821,184 km (0.085 R)
• M88: 38,065,627 km (0.077 R)
• M89: 38,249,184 km (0.041 R)
• M90: 38,494,524 km (0.092 R)
• M91: 38,678,829 km (0.038 R)
• M92: 40,039,421 km (0.072 R)
• M93: 41,101,566 km (0.109 R)
• M94: 42,172,837 km (0.086 R)

Planet 7 - Ice Giant

Semi-Major Axis: 13.44 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 635.2

Radius: 6

Gravity: 17.64 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 11.44 AU - 15.44 AU

Year: 21358 Days

Day: 15 Hours

Environment

Temp: -205 °C

Axial Tilt: 32.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (95)

Outer Limit: 60,524,155 km

• M1: 671,096 km (0.077 R)
• M2: 863,778 km (0.097 R)
• M3: 1,128,566 km (0.099 R)
• M4: 1,602,044 km (0.083 R)
• M5: 1,761,665 km (0.047 R)
• M6: 2,061,907 km (0.113 R)
• M7: 2,709,666 km (0.115 R)
• M8: 2,823,361 km (0.044 R)
• M9: 3,094,881 km (0.113 R)
• M10: 3,213,811 km (0.095 R)
• M11: 3,334,237 km (0.099 R)
• M12: 4,174,977 km (0.116 R)
• M13: 4,618,834 km (0.103 R)
• M14: 4,664,013 km (0.05 R)
• M15: 4,984,751 km (0.068 R)
• M16: 5,599,000 km (0.066 R)
• M17: 5,890,566 km (0.032 R)
• M18: 6,137,402 km (0.077 R)
• M19: 6,237,034 km (0.114 R)
• M20: 6,287,150 km (0.109 R)
• M21: 6,437,944 km (0.086 R)
• M22: 9,123,376 km (0.051 R)
• M23: 9,408,808 km (0.107 R)
• M24: 9,523,849 km (0.115 R)
• M25: 10,282,759 km (0.057 R)
• M26: 10,639,550 km (0.108 R)
• M27: 11,426,285 km (0.11 R)
• M28: 11,549,105 km (0.072 R)
• M29: 11,795,792 km (0.098 R)
• M30: 11,982,041 km (0.116 R)
• M31: 12,231,870 km (0.083 R)
• M32: 12,420,363 km (0.05 R)
• M33: 12,736,613 km (0.11 R)
• M34: 13,183,911 km (0.119 R)
• M35: 15,631,930 km (0.09 R)
• M36: 17,152,443 km (0.057 R)
• M37: 17,646,116 km (0.081 R)
• M38: 20,331,847 km (0.077 R)
• M39: 20,480,547 km (0.058 R)
• M40: 21,229,883 km (0.025 R)
• M41: 24,236,501 km (0.094 R)
• M42: 24,473,314 km (0.098 R)
• M43: 25,990,536 km (0.072 R)
• M44: 27,045,949 km (0.113 R)
• M45: 27,291,588 km (0.117 R)
• M46: 27,537,826 km (0.106 R)
• M47: 28,364,205 km (0.077 R)
• M48: 28,447,232 km (0.118 R)
• M49: 28,863,862 km (0.079 R)
• M50: 29,282,586 km (0.092 R)
• M51: 29,450,585 km (0.06 R)
• M52: 30,465,457 km (0.105 R)
• M53: 31,319,810 km (0.092 R)
• M54: 31,491,698 km (0.101 R)
• M55: 32,182,242 km (0.066 R)
• M56: 34,637,891 km (0.039 R)
• M57: 38,708,748 km (0.114 R)
• M58: 41,034,846 km (0.067 R)
• M59: 41,505,480 km (0.061 R)
• M60: 42,072,456 km (0.107 R)
• M61: 42,356,992 km (0.06 R)
• M62: 43,023,450 km (0.076 R)
• M63: 43,214,487 km (0.117 R)
• M64: 44,270,049 km (0.104 R)
• M65: 44,656,012 km (0.089 R)
• M66: 47,192,144 km (0.085 R)
• M67: 49,774,353 km (0.079 R)
• M68: 50,276,254 km (0.097 R)
• M69: 50,578,142 km (0.082 R)
• M70: 51,082,736 km (0.113 R)
• M71: 52,198,587 km (0.12 R)
• M72: 53,527,614 km (0.118 R)
• M73: 55,801,951 km (0.113 R)
• M74: 56,218,880 km (0.088 R)
• M75: 57,055,880 km (0.091 R)
• M76: 57,896,919 km (0.11 R)
• M77: 58,530,317 km (0.066 R)
• M78: 58,847,913 km (0.038 R)
• M79: 59,166,107 km (0.095 R)
• M80: 60,230,796 km (0.072 R)
• M81: 61,839,721 km (0.036 R)
• M82: 61,947,431 km (0.07 R)
• M83: 63,353,950 km (0.118 R)
• M84: 65,868,242 km (0.113 R)
• M85: 67,414,485 km (0.095 R)
• M86: 67,636,488 km (0.075 R)
• M87: 68,414,996 km (0.101 R)
• M88: 68,526,446 km (0.027 R)
• M89: 68,637,897 km (0.083 R)
• M90: 69,868,489 km (0.053 R)
• M91: 70,205,383 km (0.104 R)
• M92: 71,332,304 km (0.038 R)
• M93: 74,404,595 km (0.107 R)
• M94: 75,784,037 km (0.067 R)
• M95: 77,403,733 km (0.085 R)

Planet 8 - Ice Giant

Semi-Major Axis: 14.58 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 236.8

Radius: 5.2

Gravity: 8.76 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 12.33 AU - 16.83 AU

Year: 24132 Days

Day: 22.1 Hours

Environment

Temp: -207 °C

Axial Tilt: 28.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (66)

Outer Limit: 60,524,155 km

• M1: 495,019 km (0.108 R)
• M2: 641,775 km (0.086 R)
• M3: 1,089,820 km (0.049 R)
• M4: 1,536,520 km (0.05 R)
• M5: 2,240,378 km (0.116 R)
• M6: 2,577,871 km (0.095 R)
• M7: 3,861,719 km (0.045 R)
• M8: 3,970,477 km (0.095 R)
• M9: 4,116,933 km (0.113 R)
• M10: 4,528,776 km (0.082 R)
• M11: 4,605,071 km (0.051 R)
• M12: 4,720,411 km (0.099 R)
• M13: 5,230,839 km (0.074 R)
• M14: 5,391,358 km (0.101 R)
• M15: 10,651,817 km (0.113 R)
• M16: 10,753,544 km (0.047 R)
• M17: 11,009,057 km (0.086 R)
• M18: 11,266,515 km (0.077 R)
• M19: 11,630,337 km (0.076 R)
• M20: 12,476,462 km (0.052 R)
• M21: 13,069,468 km (0.097 R)
• M22: 14,507,553 km (0.095 R)
• M23: 15,359,812 km (0.104 R)
• M24: 15,647,488 km (0.074 R)
• M25: 20,548,913 km (0.118 R)
• M26: 21,056,648 km (0.025 R)
• M27: 21,633,049 km (0.101 R)
• M28: 22,084,834 km (0.117 R)
• M29: 23,129,177 km (0.092 R)
• M30: 23,260,823 km (0.062 R)
• M31: 23,989,365 km (0.091 R)
• M32: 26,563,645 km (0.071 R)
• M33: 26,701,425 km (0.117 R)
• M34: 26,770,539 km (0.102 R)
• M35: 27,116,559 km (0.114 R)
• M36: 28,586,208 km (0.114 R)
• M37: 28,656,819 km (0.064 R)
• M38: 29,651,794 km (0.082 R)
• M39: 30,081,589 km (0.111 R)
• M40: 30,225,352 km (0.031 R)
• M41: 30,513,478 km (0.103 R)
• M42: 30,947,461 km (0.035 R)
• M43: 32,334,981 km (0.085 R)
• M44: 33,519,198 km (0.1 R)
• M45: 34,943,669 km (0.112 R)
• M46: 35,094,763 km (0.114 R)
• M47: 35,397,699 km (0.101 R)
• M48: 35,929,669 km (0.094 R)
• M49: 36,694,413 km (0.092 R)
• M50: 37,387,201 km (0.053 R)
• M51: 38,084,327 km (0.063 R)
• M52: 39,255,678 km (0.101 R)
• M53: 39,412,756 km (0.027 R)
• M54: 41,633,835 km (0.097 R)
• M55: 42,436,727 km (0.036 R)
• M56: 43,325,937 km (0.117 R)
• M57: 44,384,791 km (0.117 R)
• M58: 45,616,879 km (0.114 R)
• M59: 47,947,015 km (0.057 R)
• M60: 48,535,533 km (0.099 R)
• M61: 49,719,750 km (0.093 R)
• M62: 52,202,925 km (0.055 R)
• M63: 53,416,164 km (0.07 R)
• M64: 54,200,954 km (0.074 R)
• M65: 57,556,285 km (0.059 R)
• M66: 57,823,915 km (0.116 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 158 - 15,268 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit