jgsimbad on 24-Jul-2010 21:32:09 GMT about HD 347929
It is a T Tau star. Period changes in RS CVn stars of this kind, around 33.6 days to 32.9 days for the full ASAS3 data, are not known.
T Tau stars can also show rotational variation due to starspots.
Latest ASAS3 lightcurve, when available, shows the amplitude to have increased even further.
This is again at somewhat too large a rate for the usual RS CVn.
Unpublished spectra for a candidate list for a Hubble Space Telescope T Tau coronograph project revealed the spectrum to be K4 V-IV
Look under Tyc2 1562 663 here
[link url=http://www.stsci.edu/observing/phase2-public/10176.pro]
http://www.stsci.edu/observing/phase2-public/10176.pro[/link]
Xray flare occured, as referenced in ATEL
2700
and
2701
.
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