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NGC 7327, unfortunately, is one of those "....many novae merely alluded to in (Tempel's) published notes." A rough translation by me of what Tempel has to say about N7327 in his published article doesn't really help much, but here it is: "Of my eight companions [to N7331], Lord Rosse has still not seen two; one [ NGC 7338, which see] is located in the middle of the four brighter companions following, closer to the two southern objects; while the eighth [N7327] precedes the northern end of the spindle." That is it.
Tempel gives no accurate positions or offsets, so all we have are the numbers published in the NGC to lead us to the area. There is nothing in the immediate vicinity but stars. However, about 4 arcmin northwest is a compact galaxy with a star superposed (I think the object is the one that RNGC incorrectly chose for NGC 7325, which see) that might have been within range of Tempel's telescope. I've chosen it as a possibility for his object.
However, there are four stars scattered around the NGC position. The brightest is 1.5 arcmin southwest, the faintest is 1.1 arcmin north-northeast, and the intermediate stars are 0.9 arcmin southeast and 0.9 arcmin east- northeast. One of these is taken to be N7327 in RC1, MCG, and RNGC. Given that so many of Tempel's new "nebulae" in other fields (see, e.g. NGC 4322 and NGC 4768 / NGC 4769) are stars or asterisms, it is actually more likely that one of these stars is his object than the galaxy that I give in the table. But which one? So, I put them all in the table with question marks everywhere.
The RNGC (Sulentic and Tifft 1973) notes that this is a nonexistent object. Their coded description reads * DC.
The Messier objects
The Bennett objects
The Caldwell list
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