Here is the combined Defense installation, with upgraded sensor capabilities and some filler to get to 10000 tons even
Combo class Asteroid Defense Complex 10000 tons 631 Crew 4110.68 BP TCS 200 TH 0 EM 0
Armour 23-41 Sensors 4/300 Damage Control Rating 0 PPV 49
Magazine 1028
Quad 12cm C5 Visible Light Laser Turret (1x4) Range 80,000km TS: 20000 km/s Power 16-20 RM 2 ROF 5 4 4 2 2 1 1 1 1 0 0
Single Gauss Cannon R5-33 Turret (5x5) Range 50,000km TS: 25000 km/s Power 0-0 RM 5 ROF 5 1 1 1 1 1 0 0 0 0 0
PDC Fire Control S04 60-20000 (5) Max Range: 120,000 km TS: 20000 km/s 92 83 75 67 58 50 42 33 25 17
PDC Fire Control S06 90-20000 H70 (1) Max Range: 180,000 km TS: 20000 km/s 94 89 83 78 72 67 61 56 50 44
Gas-Cooled Fast Reactor Technology PB-1 AR-0 (4) Total Power Output 18 Armour 0 Exp 5%
PDC Size 6 Missile Launcher (1) Missile Size 6 Rate of Fire 15
PDC Size 1 Missile Launcher (4) Missile Size 1 Rate of Fire 5
Missile Fire Control FC100-R1 (4) Range 3.0m km Resolution 1
Missile Fire Control FC100-R10 (70%) (1) Range 30.0m km Resolution 10
Size 1 FAST mk2 Anti-Missile Missile (428) Speed: 71,200 km/s End: 0.7m Range: 3m km WH: 1 Size: 1 TH: 237 / 142 / 71
Size 6 Super Chugger Mk2 Anti-ship Missile (100) Speed: 58,700 km/s End: 8.5m Range: 30m km WH: 10 Size: 6 TH: 195 / 117 / 58
Active Search Sensor S300-R1 (1) GPS 300 Range 3.0m km Resolution 1
Active Search Sensor S300-R10 (70%) (1) GPS 3000 Range 30.0m km Resolution 10
Thermal Sensor TH0.5-4 (1) Sensitivity 4 Detect Sig Strength 1000: 4m km
EM Detection Sensor EM0.5-4 (1) Sensitivity 4 Detect Sig Strength 1000: 4m km
Compact ECCM-2 (1) Missile to hit chances are vs targets moving at 3000 km/s, 5000 km/s and 10,000 km/s
This design is classed as a Planetary Defence Centre and can be pre-fabricated in 4 sections