Empty NGC/IC circle

Interesting things
1

“Legacy Survey Sky Browser”

If we select the NGC/IC galaxies option in the above page, the circle is not placed around the spiral. It is positioned to the left of the spiral, with nothing in its centre. The label in the circle is IC 1458. However, SIMBAD shows the spiral as IC 1458. If that is correct then the circle and the label should be around the spiral.

Thanks
Karthik

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2

This is how it looks

empty_ngc_circle_1

Thanks
Karthik

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3

I found this one.

image
image519×650 79.9 KB

Neither are correct, NGC 560 is identical to IC 117.
So this one looks to have a duplicate entry with another object. I will look in Wolfgang Steinicke’s revised NGC IC catalogue.

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4
Error

now that I know of, IC 1498 was discovered by Swift, at least in context, but I couldn’t find any notes regarding IC 1498 in the list.

Let’s try Corwin’s Notes instead.

NOTE: This information was incorrect after I missed IC 1458 as 1498.

5

Okay, it is in fact a duplicate entry with NGC 7441, which matches the description of the IC object.

The duplicate was late detected, and I may investigate Corwin’s notes to see how.

6

Copy from Corwin’s notes: commenting

NGC 7441 is probably IC 1458. Even though Ormond Stone’s position is well
east of the galaxy – as many of the Leander McCormick positions are – there
is a 10th magnitude star preceding the galaxy as in his description, and the
galaxy itself also matches the description well. Stone marked the declination
with a question mark, so it’s not surprising to find that it is 30 arcmin off.

The galaxy usually taken as N7441, MCG -01-58-013, better fits only Stone’s
position, though not the description. In particular, there is no 10th
magnitude star preceding the galaxy; the nearest star of any consequence is
12th magnitude and 1.7 arcmin northeast. Still, this could be Stone’s star if
he confused “preceding” and “following”. So, because of the better positional
coincidence, I think the galaxy is still a candidate for Stone’s object.

If you’re wondering where I got that info:
http://haroldcorwin.net/ngcic/index.html

7

I believe we pull the NGC/IC positions shown in the viewer from the OpenNGC project:

cheers,
dustin

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