Harold Corwin

IC 1533 is lost. Swift recorded it on 24 May 1898 during his last observing season. The other nebulae he found that night, IC 1531 and (perhaps) IC 1616, are more or less where he puts them, though his RAs are off by -20 and -7 seconds, respectively. Swift's declinations for those two are within two arcminutes of being correct. Assuming that the RA is at fault, I searched first east, then west of Swift's position for IC 1533, but found nothing.

When I first went over the field, I suggested that the object might be MCG -01-01-044 at 00 10 23.3, -07 05 03 (J2000). However, the star field does not match Swift's description ("... bet 7 1/2m * n and 9m *s ..."). With the position mismatch and the star field mismatch, I am not sanquine about this possibility.

It's also possible that this may be nothing more than a faint star. Swift's full description reads, "eeeF, vS, R, bet 7 1/2m * n and 9m * s, eee dif."

― IC Notes by Harold Corwin

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