Monday, July 01, 2019

plotted STT 411

Checked the WDS for STT 411. OK. Stars logged up to F.

Tried to plot it in my Excel plotter file but it gave very strange results for the D and F stars. So I had to hack it.

STT 411 plot with 6 stars

STT 411 with all the stars showing, centred on A. Closely matches SkyTools. And closely matches what I saw. Except the F star: too dim for the little ETX.

Ignore the "x" entry: it's a dummy item for scaling purposes.

designation: 20423+4549
A star magnitude: 7.7

discover ID pair first last PA sep mag
STT 411 AB 1845 2015 349 31.8 10.58
WAL 132 AC 1892 2015 357 71.2 10.23
BKO 158 AF 1998 2015 143 41.0 12.2
WAL 132 BC 1892 2015 4 40.1 10.23
CTT  15 BD 1892 2015 178 86.6 10.60
CTT  15 BE 1892 2015 141 87.9 10.55

where:

first is the discovery date;
last is the last reported date;
PA, position angle;
sep, separation in arc-seconds;
mag is the magnitude of the noted companion star.

Picked up some new discoverer codes:

CTT  for Courtot, J.-F.
WAL for Wallenquist, A.

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