SMC and 47 Tucanae

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chornedsnorkack@hushmail.com - 27 Feb 2007 17:09 GMT

How far are SMC and 47 Tucanae from each other, in angular measure?

How well can you measure your position in the Galactic disc by the
parallax between SMC and 47 Tucanae?

If you are able to verify by SMC and 47 Tucanae that you are in
general solar neighbourhood, what would be the next pointers to pick
up?

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David Johnston - 28 Feb 2007 00:30 GMT

>How far are SMC and 47 Tucanae from each other, in angular measure?
>
[quoted text clipped - 4 lines]
>general solar neighbourhood, what would be the next pointers to pick
>up?

What's SMC?

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John Reiher - 28 Feb 2007 00:53 GMT

> >How far are SMC and 47 Tucanae from each other, in angular measure?
> >
[quoted text clipped - 6 lines]
>
> What's SMC?

I'd say that it's the Small Magellanic Cloud.

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Erik Max Francis - 28 Feb 2007 01:03 GMT

> What's SMC?

The Small Magellanic Cloud. It's at about 00h 53m RA, -72d 50m DEC.

47 Tucanae is at about 00h 24m RA, -72d 05m DEC. So roughly speaking,
that's a difference of about half an hour in right ascension and one
degree in declination, but at very high declination. Altogether that's
a difference of two degrees or so.

Their distances from us are quite different, however; 47 Tuc is only
13.4 kly away, but the Small Magellanic Cloud is 210.0 kly distant.

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Space Forum / Astronomy / February 2007

SMC and 47 Tucanae