Praea Euq QY-Y b14-4 [#9470537508481]
Praea Euq QY-Y b14-4 A
/ M (Red dwarf) Star
(Scoopable)
Distance to arrival:
0 ls
Estimated value:
1 207 cr
Solar masses:
0,3789
Solar radius:
0,5022
Age:
5 104 million years
Luminosity:
Va
Surface temperature:
2 919 K
Praea Euq QY-Y b14-4 A A Belt
Class:
Rocky
Mass:
85 229 000 000 000 Mt
Inner radius:
570 980 km
Outer radius:
1 746 100 km
Praea Euq QY-Y b14-4 A 1
/ High metal content world
(Landable)
Distance to arrival:
14 ls
Estimated value:
13 283 cr
Earth masses:
0,1293
Radius:
3 232 km
Gravity:
0,50 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
661 K
Materials:
Fe
(22,3%)
Ni
(16,9%)
S
(15,9%)
C
(13,4%)
Mn
(9,2%)
P
(8,6%)
V
(5,5%)
Ge
(4,7%)
Sn
(1,5%)
Te
(1,2%)
Hg
(1,0%)
Praea Euq QY-Y b14-4 A 1 a
/ Rocky body
(Landable)
Distance to arrival:
14 ls
Estimated value:
500 cr
Earth masses:
0,0011
Radius:
707 km
Gravity:
0,09 G
Volcanism:
Major Silicate Vapour Geysers
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
661 K
Materials:
Fe
(19,9%)
S
(17,9%)
Ni
(15,0%)
C
(15,0%)
P
(9,6%)
Mn
(8,2%)
Zn
(5,4%)
V
(4,9%)
Cd
(1,5%)
Nb
(1,4%)
Sb
(1,1%)
Praea Euq QY-Y b14-4 A 2
/ High metal content world
(Landable)
Distance to arrival:
19 ls
Estimated value:
13 103 cr
Earth masses:
0,1002
Radius:
2 977 km
Gravity:
0,46 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
581 K
Materials:
Fe
(21,0%)
Ni
(15,9%)
S
(14,9%)
C
(12,5%)
Cr
(9,4%)
Mn
(8,7%)
P
(8,0%)
Zn
(5,7%)
Cd
(1,6%)
W
(1,2%)
Te
(1,1%)
Praea Euq QY-Y b14-4 A 2 a
/ Rocky body
(Landable)
Distance to arrival:
19 ls
Estimated value:
500 cr
Earth masses:
0,0010
Radius:
704 km
Gravity:
0,09 G
Volcanism:
Major Silicate Vapour Geysers
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
581 K
Materials:
Fe
(21,2%)
S
(19,0%)
Ni
(16,0%)
C
(16,0%)
P
(10,2%)
Mn
(8,8%)
Se
(3,0%)
As
(2,5%)
Nb
(1,5%)
W
(1,2%)
Tc
(0,8%)
Praea Euq QY-Y b14-4 A 3
/ High metal content world
(Landable)
Distance to arrival:
26 ls
Estimated value:
12 408 cr
Earth masses:
0,0326
Radius:
2 076 km
Gravity:
0,31 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
519 K
Materials:
Fe
(21,3%)
Ni
(16,1%)
S
(15,2%)
C
(12,8%)
Cr
(9,6%)
Mn
(8,8%)
P
(8,2%)
Ge
(4,5%)
Mo
(1,4%)
Sn
(1,4%)
Tc
(0,8%)
Praea Euq QY-Y b14-4 A 4
/ High metal content world
(Landable)
Distance to arrival:
36 ls
Estimated value:
12 560 cr
Earth masses:
0,0425
Radius:
2 264 km
Gravity:
0,34 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
459 K
Materials:
Fe
(20,9%)
Ni
(15,8%)
S
(14,9%)
C
(12,5%)
Cr
(9,4%)
Mn
(8,6%)
P
(8,0%)
Zn
(5,7%)
Cd
(1,6%)
Nb
(1,4%)
Te
(1,1%)
Praea Euq QY-Y b14-4 A 5
/ High metal content world
(Landable)
Distance to arrival:
45 ls
Estimated value:
12 559 cr
Earth masses:
0,0425
Radius:
2 263 km
Gravity:
0,34 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
425 K
Materials:
Fe
(21,3%)
Ni
(16,1%)
S
(15,2%)
C
(12,8%)
Cr
(9,6%)
Mn
(8,8%)
P
(8,2%)
Ge
(4,5%)
Nb
(1,5%)
Te
(1,2%)
Hg
(0,9%)
Praea Euq QY-Y b14-4 AB 2
/ Class II gas giant
Distance to arrival:
1 133 ls
Estimated value:
30 705 cr
Earth masses:
849,3459
Radius:
77 671 km
Reserve level:
Pristine
Gravity:
5,73 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
215 K
Praea Euq QY-Y b14-4 AB 2 a
/ Icy body
(Landable)
Distance to arrival:
1 135 ls
Estimated value:
500 cr
Earth masses:
0,0112
Radius:
1 960 km
Gravity:
0,12 G
Volcanism:
Water Geysers
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
95 K
Materials:
S
(27,0%)
C
(22,7%)
P
(14,6%)
Fe
(12,1%)
Ni
(9,1%)
Mn
(5,0%)
Ge
(3,5%)
Zn
(3,3%)
Cd
(0,9%)
Te
(0,9%)
Nb
(0,8%)
Praea Euq QY-Y b14-4 AB 2 b
/ Icy body
(Landable)
Distance to arrival:
1 137 ls
Estimated value:
500 cr
Earth masses:
0,0152
Radius:
2 166 km
Gravity:
0,13 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
90 K
Materials:
S
(27,2%)
C
(22,9%)
P
(14,7%)
Fe
(12,2%)
Ni
(9,2%)
Cr
(5,5%)
Se
(4,3%)
As
(1,6%)
Cd
(0,9%)
Nb
(0,8%)
Ru
(0,8%)
Praea Euq QY-Y b14-4 AB 3
/ Class I gas giant
Distance to arrival:
1 111 ls
Estimated value:
2 807 cr
Earth masses:
2,7902
Radius:
18 616 km
Reserve level:
Pristine
Gravity:
0,33 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
84 K
Praea Euq QY-Y b14-4 AB 5
/ Class II gas giant
Distance to arrival:
1 737 ls
Estimated value:
30 436 cr
Earth masses:
796,3504
Radius:
77 273 km
Reserve level:
Pristine
Gravity:
5,43 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
184 K
Praea Euq QY-Y b14-4 AB 5 a
/ Icy body
(Landable)
Distance to arrival:
1 736 ls
Estimated value:
500 cr
Earth masses:
0,0116
Radius:
1 982 km
Gravity:
0,12 G
Volcanism:
Major Water Geysers
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
78 K
Materials:
S
(28,0%)
C
(23,5%)
P
(15,1%)
Fe
(12,5%)
Ni
(9,5%)
Se
(4,4%)
Zn
(3,4%)
As
(1,6%)
Sn
(0,8%)
Y
(0,8%)
W
(0,7%)
Praea Euq QY-Y b14-4 AB 5 b
/ Icy body
Distance to arrival:
1 739 ls
Estimated value:
500 cr
Earth masses:
0,0141
Radius:
2 107 km
Surface pressure:
61,47 Atmospheres
Gravity:
0,13 G
Volcanism:
No volcanism
Atmosphere:
Thick Carbon dioxide-rich
Terraforming state:
Not terraformable
Surface temperature:
229 K
Praea Euq QY-Y b14-4 AB 5 b a
/ Icy body
Distance to arrival:
1 739 ls
Estimated value:
500 cr
Earth masses:
0,0003
Radius:
628 km
Surface pressure:
6,30 Atmospheres
Gravity:
0,03 G
Volcanism:
Water Geysers
Atmosphere:
Thick Methane
Terraforming state:
Not terraformable
Surface temperature:
170 K
Praea Euq QY-Y b14-4 AB 5 c
/ Icy body
Distance to arrival:
1 735 ls
Estimated value:
500 cr
Earth masses:
0,0068
Radius:
1 659 km
Surface pressure:
0,48 Atmospheres
Gravity:
0,10 G
Volcanism:
No volcanism
Atmosphere:
Methane
Terraforming state:
Not terraformable
Surface temperature:
119 K
Praea Euq QY-Y b14-4 AB 5 d
/ Icy body
Distance to arrival:
1 742 ls
Estimated value:
500 cr
Earth masses:
0,0287
Radius:
2 661 km
Surface pressure:
1,29 Atmospheres
Gravity:
0,16 G
Volcanism:
No volcanism
Atmosphere:
Methane
Terraforming state:
Not terraformable
Surface temperature:
127 K
Praea Euq QY-Y b14-4 AB 6
/ Icy body
Distance to arrival:
1 720 ls
Estimated value:
529 cr
Earth masses:
4,4267
Radius:
11 963 km
Surface pressure:
0,82 Atmospheres
Gravity:
1,26 G
Volcanism:
Major Water Geysers
Atmosphere:
Helium
Terraforming state:
Not terraformable
Surface temperature:
57 K
Praea Euq QY-Y b14-4 AB 1
/ Class III gas giant
Distance to arrival:
871 ls
Estimated value:
1 051 cr
Earth masses:
1 693,6427
Radius:
75 267 km
Reserve level:
Pristine
Gravity:
12,16 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
417 K
Praea Euq QY-Y b14-4 AB 1 a
/ Rocky body
(Landable)
Distance to arrival:
871 ls
Estimated value:
500 cr
Earth masses:
0,0007
Radius:
620 km
Gravity:
0,07 G
Volcanism:
Major Silicate Vapour Geysers
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
180 K
Materials:
Fe
(18,9%)
S
(18,6%)
C
(15,6%)
Ni
(14,3%)
P
(10,0%)
Cr
(8,5%)
Ge
(5,5%)
Zn
(5,1%)
Nb
(1,3%)
Ru
(1,2%)
Sn
(1,1%)
Praea Euq QY-Y b14-4 AB 1 b
/ Rocky body
Distance to arrival:
872 ls
Estimated value:
500 cr
Earth masses:
0,0008
Radius:
644 km
Gravity:
0,07 G
Volcanism:
Major Rocky Magma
Atmosphere:
Sulphur dioxide
Terraforming state:
Not terraformable
Surface temperature:
160 K
Praea Euq QY-Y b14-4 AB 1 c
/ Rocky body
Distance to arrival:
870 ls
Estimated value:
500 cr
Earth masses:
0,0022
Radius:
908 km
Surface pressure:
1,43 Atmospheres
Gravity:
0,11 G
Volcanism:
No volcanism
Atmosphere:
Carbon dioxide
Terraforming state:
Not terraformable
Surface temperature:
252 K
Praea Euq QY-Y b14-4 AB 1 d
/ Rocky body
Distance to arrival:
869 ls
Estimated value:
500 cr
Earth masses:
0,0009
Radius:
670 km
Surface pressure:
0,01 Atmospheres
Gravity:
0,08 G
Volcanism:
No volcanism
Atmosphere:
Thin Carbon dioxide
Terraforming state:
Not terraformable
Surface temperature:
157 K
Praea Euq QY-Y b14-4 AB 1 e
/ Icy body
(Landable)
Distance to arrival:
869 ls
Estimated value:
500 cr
Earth masses:
0,0040
Radius:
1 311 km
Gravity:
0,10 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
117 K
Materials:
S
(24,3%)
C
(20,5%)
Fe
(14,7%)
P
(13,1%)
Ni
(11,1%)
Mn
(6,1%)
Zn
(4,0%)
V
(3,6%)
Mo
(1,0%)
Sb
(0,9%)
Sn
(0,9%)
Praea Euq QY-Y b14-4 AB 1 f
/ Icy body
(Landable)
Distance to arrival:
874 ls
Estimated value:
500 cr
Earth masses:
0,0059
Radius:
1 489 km
Gravity:
0,11 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
111 K
Materials:
S
(24,1%)
C
(20,3%)
Fe
(14,5%)
P
(13,0%)
Ni
(11,0%)
Cr
(6,5%)
Zn
(4,0%)
V
(3,6%)
Te
(1,1%)
Nb
(1,0%)
Mo
(1,0%)
Praea Euq QY-Y b14-4 AB 4
/ Class II gas giant
Distance to arrival:
1 449 ls
Estimated value:
30 291 cr
Earth masses:
769,0531
Radius:
77 544 km
Gravity:
5,20 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
187 K
Praea Euq QY-Y b14-4 AB 4 a
/ Icy body
(Landable)
Distance to arrival:
1 449 ls
Estimated value:
500 cr
Earth masses:
0,0097
Radius:
1 865 km
Gravity:
0,11 G
Volcanism:
Major Water Magma
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
79 K
Materials:
S
(27,1%)
C
(22,8%)
P
(14,6%)
Fe
(12,2%)
Ni
(9,2%)
Cr
(5,5%)
Ge
(3,5%)
V
(3,0%)
Nb
(0,8%)
Sb
(0,7%)
Hg
(0,5%)
Praea Euq QY-Y b14-4 AB 4 a a
/ Icy body
(Landable)
Distance to arrival:
1 449 ls
Estimated value:
500 cr
Earth masses:
0,0002
Radius:
524 km
Gravity:
0,03 G
Volcanism:
Water Geysers
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
79 K
Materials:
S
(29,8%)
C
(25,0%)
P
(16,0%)
Fe
(9,1%)
Ni
(6,9%)
Se
(4,7%)
Cr
(4,1%)
Zn
(2,5%)
Sb
(0,7%)
Nb
(0,6%)
Mo
(0,6%)
Praea Euq QY-Y b14-4 AB 4 b
/ Icy body
(Landable)
Distance to arrival:
1 455 ls
Estimated value:
500 cr
Earth masses:
0,0053
Radius:
1 535 km
Gravity:
0,09 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
74 K
Materials:
S
(27,2%)
C
(22,9%)
P
(14,6%)
Fe
(12,2%)
Ni
(9,2%)
Cr
(5,5%)
Zn
(3,3%)
V
(3,0%)
Nb
(0,8%)
Sb
(0,7%)
W
(0,7%)
Praea Euq QY-Y b14-4 AB 4 c
/ Icy body
Distance to arrival:
1 454 ls
Estimated value:
500 cr
Earth masses:
0,0053
Radius:
1 533 km
Surface pressure:
40,63 Atmospheres
Gravity:
0,09 G
Volcanism:
Minor Carbon Dioxide Geysers
Atmosphere:
Thick Methane
Terraforming state:
Not terraformable
Surface temperature:
216 K
Praea Euq QY-Y b14-4 AB 4 d
/ Icy body
Distance to arrival:
1 454 ls
Estimated value:
500 cr
Earth masses:
0,0037
Radius:
1 361 km
Surface pressure:
31,76 Atmospheres
Gravity:
0,08 G
Volcanism:
Carbon Dioxide Geysers
Atmosphere:
Thick Methane
Terraforming state:
Not terraformable
Surface temperature:
210 K
Praea Euq QY-Y b14-4 AB 4 e
/ Icy body
Distance to arrival:
1 441 ls
Estimated value:
500 cr
Earth masses:
0,0070
Radius:
1 678 km
Surface pressure:
0,49 Atmospheres
Gravity:
0,10 G
Volcanism:
No volcanism
Atmosphere:
Methane
Terraforming state:
Not terraformable
Surface temperature:
122 K
Praea Euq QY-Y b14-4 AB 4 e a
/ Icy body
Distance to arrival:
1 441 ls
Estimated value:
500 cr
Earth masses:
0,0002
Radius:
540 km
Surface pressure:
4,65 Atmospheres
Gravity:
0,03 G
Volcanism:
Major Water Geysers
Atmosphere:
Methane
Terraforming state:
Not terraformable
Surface temperature:
159 K
Praea Euq QY-Y b14-4 AB 4 f
/ Icy body
Distance to arrival:
1 451 ls
Estimated value:
500 cr
Earth masses:
0,0151
Radius:
2 156 km
Surface pressure:
0,83 Atmospheres
Gravity:
0,13 G
Volcanism:
No volcanism
Atmosphere:
Methane
Terraforming state:
Not terraformable
Surface temperature:
127 K
Praea Euq QY-Y b14-4 AB 4 f a
/ Icy body
Distance to arrival:
1 451 ls
Estimated value:
500 cr
Earth masses:
0,0004
Radius:
680 km
Surface pressure:
7,27 Atmospheres
Gravity:
0,04 G
Volcanism:
Major Water Magma
Atmosphere:
Thick Methane
Terraforming state:
Not terraformable
Surface temperature:
165 K
Praea Euq QY-Y b14-4 AB 4 g
/ Icy body
Distance to arrival:
1 444 ls
Estimated value:
500 cr
Earth masses:
0,0096
Radius:
1 862 km
Surface pressure:
0,61 Atmospheres
Gravity:
0,11 G
Volcanism:
No volcanism
Atmosphere:
Methane
Terraforming state:
Not terraformable
Surface temperature:
120 K
Praea Euq QY-Y b14-4 AB 7
/ Class I gas giant
Distance to arrival:
2 396 ls
Estimated value:
3 784 cr
Earth masses:
60,3135
Radius:
50 289 km
Reserve level:
Pristine
Gravity:
0,97 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
53 K
Praea Euq QY-Y b14-4 AB 7 a
/ Icy body
(Landable)
Distance to arrival:
2 397 ls
Estimated value:
500 cr
Earth masses:
0,0002
Radius:
547 km
Gravity:
0,03 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
44 K
Materials:
S
(27,0%)
C
(22,7%)
P
(14,5%)
Fe
(12,1%)
Ni
(9,1%)
Cr
(5,4%)
Mn
(5,0%)
As
(1,6%)
Cd
(0,9%)
Te
(0,9%)
Sn
(0,7%)
Praea Euq QY-Y b14-4 AB 7 b
/ Icy body
(Landable)
Distance to arrival:
2 392 ls
Estimated value:
500 cr
Earth masses:
0,0005
Radius:
716 km
Gravity:
0,04 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
44 K
Materials:
S
(27,4%)
C
(23,1%)
P
(14,8%)
Fe
(12,4%)
Ni
(9,4%)
Cr
(5,6%)
Zn
(3,4%)
Zr
(1,4%)
Cd
(1,0%)
Mo
(0,8%)
Ru
(0,8%)
Praea Euq QY-Y b14-4 AB 7 c
/ Icy body
(Landable)
Distance to arrival:
2 400 ls
Estimated value:
500 cr
Earth masses:
0,0002
Radius:
495 km
Gravity:
0,03 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
44 K
Materials:
S
(28,2%)
C
(23,7%)
P
(15,2%)
Fe
(12,6%)
Ni
(9,5%)
Ge
(3,7%)
Zn
(3,4%)
As
(1,6%)
Cd
(1,0%)
W
(0,7%)
Tc
(0,5%)
Praea Euq QY-Y b14-4 AB 7 d
/ Icy body
(Landable)
Distance to arrival:
2 390 ls
Estimated value:
500 cr
Earth masses:
0,0002
Radius:
547 km
Gravity:
0,03 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
44 K
Materials:
S
(26,6%)
C
(22,3%)
P
(14,3%)
Fe
(11,9%)
Ni
(9,0%)
Cr
(5,3%)
Mn
(4,9%)
Ge
(3,4%)
Nb
(0,8%)
Mo
(0,8%)
Ru
(0,7%)
Praea Euq QY-Y b14-4 AB 7 e
/ Icy body
(Landable)
Distance to arrival:
2 403 ls
Estimated value:
500 cr
Earth masses:
0,0006
Radius:
757 km
Gravity:
0,04 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
44 K
Materials:
S
(27,4%)
C
(23,0%)
P
(14,7%)
Fe
(12,5%)
Ni
(9,4%)
Se
(4,3%)
Ge
(3,6%)
V
(3,1%)
Mo
(0,8%)
Ru
(0,8%)
Hg
(0,5%)
Praea Euq QY-Y b14-4 AB 7 f
/ Icy body
(Landable)
Distance to arrival:
2 402 ls
Estimated value:
500 cr
Earth masses:
0,0002
Radius:
547 km
Gravity:
0,03 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
44 K
Materials:
S
(26,8%)
C
(22,6%)
P
(14,4%)
Fe
(12,0%)
Ni
(9,1%)
Cr
(5,4%)
Se
(4,2%)
Zn
(3,3%)
Nb
(0,8%)
Sn
(0,7%)
Y
(0,7%)
Praea Euq QY-Y b14-4 AB 7 g
/ Icy body
(Landable)
Distance to arrival:
2 399 ls
Estimated value:
500 cr
Earth masses:
0,0003
Radius:
616 km
Gravity:
0,04 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
44 K
Materials:
S
(27,8%)
C
(23,3%)
P
(14,9%)
Fe
(12,4%)
Ni
(9,4%)
Mn
(5,1%)
Zn
(3,4%)
As
(1,6%)
Cd
(1,0%)
W
(0,7%)
Tc
(0,4%)
Praea Euq QY-Y b14-4 AB 8
/ Icy body
Distance to arrival:
3 302 ls
Estimated value:
582 cr
Earth masses:
12,6376
Radius:
15 734 km
Surface pressure:
2,23 Atmospheres
Reserve level:
Pristine
Gravity:
2,08 G
Volcanism:
Water Geysers
Atmosphere:
Helium
Terraforming state:
Not terraformable
Surface temperature:
39 K
Praea Euq QY-Y b14-4 B
/ M (Red dwarf) Star
(Scoopable)
Distance to arrival:
307 ls
Estimated value:
1 207 cr
Solar masses:
0,3750
Solar radius:
0,5523
Age:
5 104 million years
Luminosity:
Va
Surface temperature:
3 082 K