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Table 1

Physical parameters of NGC 628.

Morphologya SAc
Position of the nucleus RA(J2000) = 01h36m4174
Dec(J2000) = +15°4701.1
Position angle of major axisb 20°
D25 a 10.5 × 9.5′
Inclination of the inner diskb ( is face on)
Inclination of the outer diskb 13.5°
Distancec 7.3 Mpc (1″ ≈ 35 pc)
Star formation rated 1.21 M yr-1

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