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Type: galaxy, SB0
Mag: B=11.2, V=10.3
Size: 3.5′ x 3.5′
NGC 4624 = NGC 4665 (which is also = NGC 4664, which see). JH notes that the "RA [is] ill-observed," but did not mark it uncertain. During the same sweep, he made a one-degree error in the polar distance for NGC 4636, an error that he himself suggested, and that Dreyer finally rectified for the NGC. Thus, NGC 4624 cannot be NGC 4636 as suggested by Reinmuth and adopted by RNGC.
Instead, it is most likely NGC 4665 which JH described as "B, pL" in two other sweeps. This, and the appearance of the bright bar of the galaxy, matches his terse description for N4624, "B, E." In addition, his declination is correct for all three observations.
There is a faint possibility that N4624 is N4600, but JH's two observations of that make it "F, S" in contrast to his note on N4624. In addition, the declination of N4600 is off JH's measured dec for N4624.
The RNGC (Sulentic and Tifft 1973) notes that this is a nonexistent object. Their coded description reads =4636 DC.
The Messier objects
The Bennett objects
The Caldwell list
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