[vsnet-newvar 1051] re HadV101

[crawl@zoom.co.uk]

http://vsnet.nofs.navy.mil/tmp/fchaablma_fch.html

Suggests that no variable lies immediately near V1978 Cyg's position

The variability of HadV101 can be seen, and it does seem to just have the
right sort of brightness range to be equatable V1978 Cyg on the red plates.

The following obs give about a year, ~360 days between maxima, very roughly
twice the approximate 169 day value given for V1978 Cyg in the GCVS.

The below dates even roughly fit an ephemeris from the elements, but with
an epoch as long ago as JD 2425749 and a period as short as 169 days, on
top of the normal invariance in LPV periodicity, this may not mean
anything.  Certainly, however, for a period of around 169 days currently
every other maxima is bound to be missed due to seasonality for this
zodical variable.

>HadV101        20000702.632  117p  Had.VSOLJ
>HadV101        20000708.619  122p  Had.VSOLJ
>HadV101        20000716.592  126p  Had.VSOLJ
>HadV101        20000802.535  <131p  Had.VSOLJ
>HadV101        20000822.519  132p  Had.VSOLJ
>HadV101        20000917.481  133p  Had.VSOLJ
>HadV101        20010226.841  127p  Had.VSOLJ
>HadV101        20010319.790  <123p  Had.VSOLJ
>HadV101        20010326.805  <134p  Had.VSOLJ
>HadV101        20010422.749  123p  Had.VSOLJ
>HadV101        20010517.666  127p  Had.VSOLJ
>HadV101        20010528.629  124p  Had.VSOLJ
>HadV101        20010615.639  <132p  Had.VSOLJ
>HadV101        20010626.608  <131p  Had.VSOLJ
>HadV101        20010713.583  113p  Had.VSOLJ
>HadV101        20010724.550  117p  Had.VSOLJ

Cheers

John

John Greaves
UK

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