Abstract
Detailed surface photometry for the SB(s)a galaxy NGC 7771 has been carried out in the blue spectral band. Isophotes, luminosity profiles, and photometric parameters are obtained from photographs collected with the 74 inch telescope of Kottamia Observatory, Egypt. The total apparent magnitudem T =13.08 with maximum dimensions 3′.6±0′.5×2′.7±0′.5 (at threshold µ m = 27.38 mag s−2). The absolute magnitude isM T =−21.70 if the distance is Δ=90.2 Mpc. The major axis is in position angle θ=69°.5±1° and the mean axis ratio of the outer regionsq=〈b/a〉=0.45 corresponds to an inclinationi=66°. The equivalent effective radiusr e * =0′.29 and the effective surface brightness µ e = 22.30 mag s−2.
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