[vsnet-alert 15807] Re: V905 Sco Slow Decline

[Sebastian Otero]

Hi, Peter,


> V905 Sco, classified as either SDOR or ACYG:, appears to be undergoing a
> gradual decline in brightness over recent months.

I can confirm a gradual fading starting from 2011 from the usual 6.3-6.5 
state the star spent until 2010 but it is very slow.

I got almost the same results in October, 2012 (V= 6.7 instead of 6.8) but I 
only have two observations this year and they look brighter than those form 
the previous season.
Today I observed it and made it at V= 6.64 although under hazy skies. But 
nothing like 7.4. My limiting magnitude was 7.2 due to that haze.

Below a list of my observations for 2012 and 2013.

Cheers,
Sebastian

-------------

20120626.035    2456104.5354    6.58
20120703.979    2456112.4792    6.54:
20120707.008    2456115.5076    6.57
20120708.065    2456116.5653    6.60
20120708.966    2456117.4660    6.59
20120722.964    2456131.4639    6.61
20120724.982    2456133.4819    6.61
20120729.969    2456138.4688    6.60
20120809.973    2456149.4729    6.60
20120827.979    2456167.4792    6.63
20120910.978    2456181.4778    6.62
20120914.988    2456185.4882    6.66
20120921.971    2456192.4708    6.68:
20120925.981    2456196.4806    6.70
20120929.969    2456200.4688    6.71:
20121012.979    2456213.4792    6.72
20121021.023    2456221.5229    6.75:
20121115.994    2456247.4944    6.65:
20130212.284    2456335.7840    6.46:
20130606.012    2456449.5125    6.64:

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-----------------------
Sebastian Otero
VSX Team
American Asociation of Variable Star Observers