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I'm almost certainly misreading this, but it's said that "one of the great advantages of the equatorial system is that the RA and Dec of a star do not change with time, at least over short timescales."

(http://slittlefair.staff.shef.ac.uk/teaching/phy115/session2/moreCel/moreCel.html)

My understanding, by the definition of the equatorial system, was that the sun's RA to change by 2 hours every month.

What am I missing?

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    $\begingroup$ Colloquial exclusion of the Sun from the set of stars? $\endgroup$
    – notovny
    Commented Aug 11, 2022 at 16:58
  • $\begingroup$ Of course, thank you $\endgroup$
    – user332426
    Commented Aug 11, 2022 at 17:04

1 Answer 1

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From @notovny:

Colloquial exclusion of the Sun from the set of stars?

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