Sunday, August 29, 2021

WDS updated STF 2146 data

A conversation started up on Cloudy Nights. VanJan asked what was up with STF 2146. aka HD 156162 or SAO 30299. A few people chimed in. And it now looks like the Washington Double Star database was updated.

Previously:

AB = 6.92, 8.80   2.8"   225°   (2018)   A9III     
AC = 6.95, 8.87   89.3"   235°   (2016)

Now (via Stella Doppie):

AC = 6.95, 8.87, 89.3,    235 (2016) CD = 8.87, 10.50, 2.8 ,    225 (2018) 

It seems the B is no more... Spurious or bad data early on and now deleted.

And it seems there's a companion at the C star, close in, 2.8" away. Ah.

That may explain why all my attempts did not reveal a B star close to A.

§

Did a big clean-up of the life list page. I found 2 copies, 3 entries total, for each of the pairs of Σ2146. Also, finally, put up the image from Sep 2018...

No comments: