Eorm Chroa UX-B d105 [#3620363998211]
Eorm Chroa UX-B d105
/ K (Yellow-Orange giant) Star
(Scoopable)

Distance to arrival:
0 ls
Estimated value:
1,232 cr
Solar masses:
1.7930
Solar radius:
37.2535
Age:
2,670 million years
Luminosity:
IIab
Surface temperature:
4,163 K
Eorm Chroa UX-B d105 1
/ Class IV gas giant


Distance to arrival:
489 ls
Estimated value:
1,009 cr
Earth masses:
1,270.4977
Radius:
76,312 km
Reserve level:
Pristine
Gravity:
8.87 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
1,316 K
Eorm Chroa UX-B d105 1 a
/ Metal-rich body
(Landable)

Distance to arrival:
488 ls
Estimated value:
24,223 cr
Earth masses:
0.0003
Radius:
358 km
Gravity:
0.09 G
Volcanism:
Major Metallic Magma
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
1,169 K
Materials:
Fe
(32.4%)
Ni
(24.5%)
Cr
(14.6%)
Mn
(13.4%)
Zn
(8.8%)
Cd
(2.5%)
Ru
(2.0%)
W
(1.8%)
Eorm Chroa UX-B d105 1 b
/ Metal-rich body
(Landable)

Distance to arrival:
485 ls
Estimated value:
24,384 cr
Earth masses:
0.0004
Radius:
398 km
Gravity:
0.11 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
1,145 K
Materials:
Fe
(32.4%)
Ni
(24.5%)
Cr
(14.6%)
Mn
(13.4%)
Zn
(8.8%)
Cd
(2.5%)
Y
(1.9%)
W
(1.8%)
Eorm Chroa UX-B d105 1 c
/ Metal-rich body
(Landable)

Distance to arrival:
488 ls
Estimated value:
24,289 cr
Earth masses:
0.0003
Radius:
374 km
Gravity:
0.10 G
Volcanism:
Minor Metallic Magma
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
1,140 K
Materials:
Fe
(32.9%)
Ni
(24.9%)
Cr
(14.8%)
Mn
(13.6%)
Zn
(9.0%)
Mo
(2.2%)
Hg
(1.4%)
Sb
(1.2%)
Eorm Chroa UX-B d105 1 d
/ Metal-rich body
(Landable)

Distance to arrival:
488 ls
Estimated value:
24,163 cr
Earth masses:
0.0003
Radius:
343 km
Gravity:
0.09 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
1,140 K
Materials:
Fe
(34.3%)
Ni
(25.9%)
Cr
(15.4%)
Zn
(9.3%)
V
(8.4%)
Cd
(2.7%)
Y
(2.1%)
W
(1.9%)
Eorm Chroa UX-B d105 2
/ Class IV gas giant


Distance to arrival:
633 ls
Estimated value:
1,056 cr
Earth masses:
1,748.9517
Radius:
74,101 km
Reserve level:
Pristine
Gravity:
12.96 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
1,297 K
Eorm Chroa UX-B d105 2 a
/ Metal-rich body
(Landable)

Distance to arrival:
631 ls
Estimated value:
23,995 cr
Earth masses:
0.0002
Radius:
304 km
Gravity:
0.08 G
Volcanism:
Rocky Magma
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
1,042 K
Materials:
Fe
(32.8%)
Ni
(24.8%)
Cr
(14.8%)
Mn
(13.6%)
V
(8.1%)
Sn
(2.2%)
Y
(2.0%)
W
(1.8%)
Eorm Chroa UX-B d105 2 b
/ Metal-rich body
(Landable)

Distance to arrival:
630 ls
Estimated value:
24,126 cr
Earth masses:
0.0002
Radius:
335 km
Gravity:
0.09 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
1,035 K
Materials:
Fe
(40.3%)
Ni
(30.5%)
Cr
(18.1%)
Cd
(3.1%)
Se
(2.9%)
Ge
(1.9%)
Hg
(1.8%)
Tc
(1.4%)
Eorm Chroa UX-B d105 2 c
/ Metal-rich body
(Landable)

Distance to arrival:
636 ls
Estimated value:
23,950 cr
Earth masses:
0.0002
Radius:
294 km
Gravity:
0.08 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
1,026 K
Materials:
Fe
(39.7%)
Ni
(30.0%)
Cr
(17.9%)
Cd
(3.1%)
Se
(2.8%)
Ru
(2.5%)
W
(2.2%)
Ge
(1.9%)
Eorm Chroa UX-B d105 2 d
/ Metal-rich body
(Landable)

Distance to arrival:
628 ls
Estimated value:
24,262 cr
Earth masses:
0.0003
Radius:
368 km
Gravity:
0.10 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
1,019 K
Materials:
Fe
(32.7%)
Ni
(24.7%)
Cr
(14.7%)
Mn
(13.5%)
Zn
(8.9%)
Nb
(2.2%)
Mo
(2.1%)
Tc
(1.2%)
Eorm Chroa UX-B d105 2 e
/ Metal-rich body
(Landable)

Distance to arrival:
638 ls
Estimated value:
24,207 cr
Earth masses:
0.0003
Radius:
354 km
Gravity:
0.09 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
1,014 K
Materials:
Fe
(43.0%)
Ni
(32.6%)
V
(10.6%)
Zr
(5.0%)
Mo
(2.8%)
W
(2.4%)
As
(2.0%)
Sb
(1.6%)
Eorm Chroa UX-B d105 3
/ Class IV gas giant

Distance to arrival:
841 ls
Estimated value:
1,055 cr
Earth masses:
1,735.3701
Radius:
74,286 km
Gravity:
12.79 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
1,167 K
Eorm Chroa UX-B d105 3 a
/ Rocky body
(Landable)

Distance to arrival:
839 ls
Estimated value:
500 cr
Earth masses:
0.0012
Radius:
756 km
Gravity:
0.09 G
Volcanism:
Minor Metallic Magma
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
923 K
Materials:
Fe
(18.3%)
S
(18.2%)
C
(15.3%)
Ni
(13.8%)
P
(9.8%)
Cr
(8.2%)
Mn
(7.6%)
Ge
(5.3%)
Cd
(1.4%)
Ru
(1.1%)
W
(1.0%)
Eorm Chroa UX-B d105 3 b
/ Rocky body

Distance to arrival:
843 ls
Estimated value:
500 cr
Earth masses:
0.0010
Radius:
700 km
Gravity:
0.08 G
Volcanism:
Major Rocky Magma
Atmosphere:
Sulphur dioxide
Terraforming state:
Not terraformable
Surface temperature:
914 K
Eorm Chroa UX-B d105 3 c
/ Rocky body
(Landable)

Distance to arrival:
838 ls
Estimated value:
500 cr
Earth masses:
0.0015
Radius:
800 km
Gravity:
0.09 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
902 K
Materials:
Fe
(19.5%)
S
(19.3%)
C
(16.2%)
Ni
(14.7%)
P
(10.4%)
Mn
(8.0%)
Ge
(5.7%)
Zr
(2.3%)
Cd
(1.5%)
Sb
(1.2%)
Sn
(1.2%)
Eorm Chroa UX-B d105 3 d
/ Rocky body
(Landable)

Distance to arrival:
846 ls
Estimated value:
500 cr
Earth masses:
0.0040
Radius:
1,111 km
Gravity:
0.13 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
890 K
Materials:
Fe
(19.8%)
S
(19.7%)
C
(16.5%)
Ni
(15.0%)
P
(10.6%)
Mn
(8.2%)
V
(4.9%)
As
(2.6%)
Nb
(1.4%)
Hg
(0.9%)
Po
(0.5%)
Eorm Chroa UX-B d105 3 e
/ Rocky body
(Landable)

Distance to arrival:
841 ls
Estimated value:
500 cr
Earth masses:
0.0021
Radius:
896 km
Gravity:
0.11 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
879 K
Materials:
Fe
(19.5%)
S
(19.3%)
C
(16.2%)
Ni
(14.7%)
P
(10.4%)
Cr
(8.8%)
V
(4.8%)
Se
(3.0%)
Cd
(1.5%)
Nb
(1.3%)
Po
(0.5%)
Eorm Chroa UX-B d105 3 f
/ Rocky body
(Landable)

Distance to arrival:
849 ls
Estimated value:
500 cr
Earth masses:
0.0039
Radius:
1,106 km
Gravity:
0.13 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
874 K
Materials:
Fe
(18.9%)
S
(18.6%)
C
(15.7%)
Ni
(14.3%)
P
(10.0%)
Cr
(8.5%)
Mn
(7.8%)
As
(2.5%)
Te
(1.4%)
Mo
(1.2%)
W
(1.0%)
Eorm Chroa UX-B d105 3 f a
/ Rocky body
(Landable)

Distance to arrival:
849 ls
Estimated value:
500 cr
Earth masses:
0.0003
Radius:
467 km
Gravity:
0.05 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
874 K
Materials:
S
(20.1%)
Fe
(17.6%)
C
(16.9%)
Ni
(13.3%)
P
(10.8%)
Cr
(7.9%)
Mn
(7.3%)
As
(2.7%)
Nb
(1.2%)
Mo
(1.2%)
Ru
(1.1%)
Eorm Chroa UX-B d105 4
/ Class IV gas giant


Distance to arrival:
1,063 ls
Estimated value:
1,010 cr
Earth masses:
1,279.9965
Radius:
76,131 km
Reserve level:
Pristine
Gravity:
8.98 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
967 K
Eorm Chroa UX-B d105 4 a
/ Rocky body
(Landable)

Distance to arrival:
1,062 ls
Estimated value:
500 cr
Earth masses:
0.0043
Radius:
1,140 km
Gravity:
0.13 G
Volcanism:
Minor Silicate Vapour Geysers
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
806 K
Materials:
Fe
(19.0%)
S
(18.9%)
C
(15.9%)
Ni
(14.4%)
P
(10.2%)
Cr
(8.6%)
Mn
(7.9%)
Zr
(2.2%)
Cd
(1.5%)
Hg
(0.8%)
Tc
(0.7%)
Eorm Chroa UX-B d105 4 b
/ Rocky body
(Landable)

Distance to arrival:
1,060 ls
Estimated value:
500 cr
Earth masses:
0.0026
Radius:
968 km
Gravity:
0.11 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
794 K
Materials:
Fe
(19.3%)
S
(19.2%)
C
(16.1%)
Ni
(14.6%)
P
(10.3%)
Mn
(8.0%)
Ge
(5.6%)
Se
(3.0%)
Cd
(1.5%)
Mo
(1.3%)
Sb
(1.2%)
Eorm Chroa UX-B d105 4 c
/ Rocky body
(Landable)

Distance to arrival:
1,059 ls
Estimated value:
500 cr
Earth masses:
0.0022
Radius:
915 km
Gravity:
0.11 G
Volcanism:
Major Silicate Vapour Geysers
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
788 K
Materials:
Fe
(19.9%)
S
(19.8%)
C
(16.6%)
Ni
(15.1%)
P
(10.7%)
Ge
(5.8%)
V
(4.9%)
Se
(3.1%)
Cd
(1.6%)
Mo
(1.3%)
Sb
(1.2%)
Eorm Chroa UX-B d105 4 d
/ Rocky body
(Landable)

Distance to arrival:
1,059 ls
Estimated value:
500 cr
Earth masses:
0.0018
Radius:
852 km
Gravity:
0.10 G
Volcanism:
Major Silicate Vapour Geysers
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
788 K
Materials:
Fe
(18.4%)
S
(18.3%)
C
(15.4%)
Ni
(13.9%)
P
(9.8%)
Cr
(8.3%)
Mn
(7.6%)
Zn
(5.0%)
Ru
(1.1%)
Sn
(1.1%)
W
(1.0%)
Eorm Chroa UX-B d105 4 e
/ Rocky body
(Landable)

Distance to arrival:
1,066 ls
Estimated value:
500 cr
Earth masses:
0.0094
Radius:
1,471 km
Gravity:
0.18 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
776 K
Materials:
Fe
(19.0%)
S
(18.7%)
C
(15.8%)
Ni
(14.4%)
P
(10.1%)
Cr
(8.5%)
Mn
(7.8%)
Zr
(2.2%)
Nb
(1.3%)
Ru
(1.2%)
W
(1.0%)
Eorm Chroa UX-B d105 4 e a
/ Rocky body
(Landable)

Distance to arrival:
1,066 ls
Estimated value:
500 cr
Earth masses:
0.0005
Radius:
572 km
Gravity:
0.06 G
Volcanism:
Minor Silicate Vapour Geysers
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
776 K
Materials:
S
(20.1%)
Fe
(17.5%)
C
(16.9%)
Ni
(13.3%)
P
(10.8%)
Mn
(7.2%)
Ge
(5.9%)
V
(4.3%)
Te
(1.5%)
Cd
(1.4%)
Mo
(1.2%)
Eorm Chroa UX-B d105 5
/ High metal content world
(Landable)


Distance to arrival:
1,007 ls
Estimated value:
15,859 cr
Earth masses:
1.8895
Radius:
7,343 km
Reserve level:
Pristine
Gravity:
1.43 G
Volcanism:
Minor Metallic Magma
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
762 K
Materials:
Fe
(23.7%)
Ni
(17.9%)
S
(17.1%)
C
(14.4%)
P
(9.2%)
Zn
(6.4%)
Ge
(5.0%)
As
(2.3%)
Cd
(1.8%)
Te
(1.3%)
Hg
(1.0%)
Eorm Chroa UX-B d105 5 a
/ Rocky body
(Landable)

Distance to arrival:
1,007 ls
Estimated value:
500 cr
Earth masses:
0.0011
Radius:
720 km
Gravity:
0.08 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
762 K
Materials:
Fe
(19.0%)
S
(18.9%)
C
(15.9%)
Ni
(14.4%)
P
(10.2%)
Mn
(7.9%)
Ge
(5.6%)
V
(4.7%)
Nb
(1.3%)
Sb
(1.2%)
Sn
(1.1%)
Eorm Chroa UX-B d105 6
/ Class IV gas giant


Distance to arrival:
1,563 ls
Estimated value:
1,161 cr
Earth masses:
3,346.7151
Radius:
66,243 km
Reserve level:
Pristine
Gravity:
31.02 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
1,377 K
Eorm Chroa UX-B d105 6 a
/ Rocky body
(Landable)

Distance to arrival:
1,566 ls
Estimated value:
500 cr
Earth masses:
0.0100
Radius:
1,507 km
Gravity:
0.18 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
735 K
Materials:
Fe
(20.0%)
S
(19.9%)
C
(16.7%)
Ni
(15.1%)
P
(10.7%)
Ge
(5.9%)
Zn
(5.4%)
Se
(3.1%)
Nb
(1.4%)
W
(1.1%)
Tc
(0.7%)
Eorm Chroa UX-B d105 6 b
/ Rocky body
(Landable)

Distance to arrival:
1,568 ls
Estimated value:
500 cr
Earth masses:
0.0110
Radius:
1,551 km
Gravity:
0.19 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
718 K
Materials:
Fe
(19.1%)
S
(18.9%)
C
(15.9%)
Ni
(14.4%)
P
(10.2%)
Mn
(7.9%)
Zn
(5.2%)
V
(4.7%)
Cd
(1.5%)
Ru
(1.2%)
Sn
(1.1%)
Eorm Chroa UX-B d105 6 c
/ Rocky body
(Landable)

Distance to arrival:
1,570 ls
Estimated value:
500 cr
Earth masses:
0.0157
Radius:
1,743 km
Gravity:
0.21 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
704 K
Materials:
Fe
(18.5%)
S
(18.3%)
C
(15.4%)
Ni
(14.0%)
P
(9.9%)
Cr
(8.3%)
Mn
(7.6%)
Ge
(5.4%)
Mo
(1.2%)
W
(1.0%)
Po
(0.5%)
Eorm Chroa UX-B d105 6 d
/ Rocky body
(Landable)


Distance to arrival:
1,566 ls
Estimated value:
500 cr
Earth masses:
0.0275
Radius:
2,070 km
Reserve level:
Pristine
Gravity:
0.26 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
656 K
Materials:
Fe
(20.3%)
S
(18.5%)
C
(15.5%)
Ni
(15.4%)
P
(10.0%)
Mn
(8.4%)
Ge
(5.4%)
Zr
(2.4%)
Cd
(1.6%)
Mo
(1.3%)
Ru
(1.3%)
Eorm Chroa UX-B d105 7
/ Class III gas giant


Distance to arrival:
2,034 ls
Estimated value:
616 cr
Earth masses:
22.3601
Radius:
35,736 km
Reserve level:
Pristine
Gravity:
0.71 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
538 K
Eorm Chroa UX-B d105 7 a
/ Rocky body

Distance to arrival:
2,034 ls
Estimated value:
500 cr
Earth masses:
0.0083
Radius:
1,416 km
Gravity:
0.17 G
Volcanism:
Major Rocky Magma
Atmosphere:
Sulphur dioxide
Terraforming state:
Not terraformable
Surface temperature:
544 K
Eorm Chroa UX-B d105 7 b
/ Rocky body
(Landable)

Distance to arrival:
2,035 ls
Estimated value:
500 cr
Earth masses:
0.0007
Radius:
635 km
Gravity:
0.07 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
544 K
Materials:
Fe
(20.8%)
S
(20.6%)
C
(17.4%)
Ni
(15.7%)
P
(11.1%)
V
(5.1%)
As
(2.7%)
Zr
(2.4%)
Cd
(1.6%)
Ru
(1.3%)
Sn
(1.3%)
Eorm Chroa UX-B d105 7 c
/ Rocky body
(Landable)

Distance to arrival:
2,035 ls
Estimated value:
500 cr
Earth masses:
0.0005
Radius:
545 km
Gravity:
0.06 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
544 K
Materials:
Fe
(19.3%)
S
(19.1%)
C
(16.1%)
Ni
(14.6%)
P
(10.3%)
Cr
(8.7%)
Zn
(5.2%)
Se
(3.0%)
Nb
(1.3%)
Sb
(1.2%)
Sn
(1.2%)
Eorm Chroa UX-B d105 8
/ High metal content world

Distance to arrival:
2,047 ls
Estimated value:
17,545 cr
Earth masses:
6.2842
Radius:
10,228 km
Surface pressure:
855.64 Atmospheres
Gravity:
2.44 G
Volcanism:
Major Silicate Vapour Geysers
Atmosphere:
Hot thick Carbon dioxide
Terraforming state:
Not terraformable
Surface temperature:
2,047 K
Eorm Chroa UX-B d105 9
/ Class III gas giant


Distance to arrival:
2,739 ls
Estimated value:
580 cr
Earth masses:
12.3073
Radius:
17,026 km
Reserve level:
Pristine
Gravity:
1.73 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
462 K
Eorm Chroa UX-B d105 9 a
/ Rocky body

Distance to arrival:
2,740 ls
Estimated value:
500 cr
Earth masses:
0.0005
Radius:
555 km
Gravity:
0.06 G
Volcanism:
Major Rocky Magma
Atmosphere:
Sulphur dioxide
Terraforming state:
Not terraformable
Surface temperature:
470 K
Eorm Chroa UX-B d105 9 b
/ Rocky body
(Landable)

Distance to arrival:
2,739 ls
Estimated value:
500 cr
Earth masses:
0.0009
Radius:
686 km
Gravity:
0.08 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
470 K
Materials:
Fe
(20.8%)
S
(20.5%)
C
(17.3%)
Ni
(15.7%)
P
(11.1%)
Ge
(6.0%)
As
(2.7%)
Zr
(2.4%)
Mo
(1.4%)
Y
(1.2%)
Hg
(0.9%)
Eorm Chroa UX-B d105 9 c
/ Rocky body
(Landable)

Distance to arrival:
2,741 ls
Estimated value:
500 cr
Earth masses:
0.0009
Radius:
689 km
Gravity:
0.08 G
Volcanism:
No volcanism
Atmosphere:
No atmosphere
Terraforming state:
Not terraformable
Surface temperature:
470 K
Materials:
Fe
(18.7%)
S
(18.6%)
C
(15.6%)
Ni
(14.2%)
P
(10.0%)
Cr
(8.4%)
Ge
(5.5%)
Zn
(5.1%)
Te
(1.4%)
Nb
(1.3%)
Sn
(1.1%)
Eorm Chroa UX-B d105 10
/ High metal content world


Distance to arrival:
2,711 ls
Estimated value:
18,031 cr
Earth masses:
8.4737
Radius:
11,679 km
Surface pressure:
1,009.32 Atmospheres
Reserve level:
Pristine
Gravity:
2.53 G
Volcanism:
Major Silicate Vapour Geysers
Atmosphere:
Hot thick Carbon dioxide
Terraforming state:
Not terraformable
Surface temperature:
1,806 K