What happens to WDS identifiers when precession significantly alters the actual RA and Dec of the pair?
Example: STF 2614 in Ursa Major ...... WDS 18059+8815 Has it always been 18059+8815? Or was this determined at some date in the past?
I assume the ID stays the same while the RA and Dec change (most rapidly near the poles....)?
Position in Epoch 1950.0 was 18h 39m 25.7s +88º 13' 24.3"... which is rather off for the identifier..
Position in Epoch 2000.0 is 18h 06m 05.92s +88º 15' 17.6" which matches reasonably well to the identifier.
Position in Epoch 2050.0 will be 17h 31m 52.8s +88º 14' 28.3". The RA is off by a whopping 36minutes!
Since we will be moving to epoch 2050 relatively soon, will the WDS identifier be adjusted? I would think not....
So will WDS identifiers become further and further from the 'current' position, making life more difficult for future astronomers?
And what of my Digital Setting Circles? Will they be rendered less accurate? Will the switch to Epoch 2050.0 in a few years be a problem?