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Sun, 03 Apr 2016 - Eclipsing Binary Predictions : 2016 Apr-May

Here are predictions for eclipses that are reasonably favourable from the UK during April and May:

Times are in UT (same as GMT, 1 hour behind BST - so, for example, 20.6h UT is 21.6h BST)

RZ Cassiopeiae

Eclipses last 4.8h, with most of the brightness changes taking place during the middle 3 hours. The times shown below are for the mid-point of the eclipses

Date Mid-Eclipse (UT)
April 3 21.2h
April 5 1.9h
April 9 20.6h
April 11 1.3h
April 17 0.8h
April 23 0.2h
April 28 23.6h
May 4 23.1h
May 10 22.5h
May 16 21.9h
May 18 2.6h
May 22 21.3h
May 24 2.0h
May 30 1.5h

U Cephei

Eclipses last for approx 9 hours. The times shown below are for the eclipse mid-point. Eclipses are total, so there is a period of constant brightness around the middle of the eclipse.

May:  7d  3.2h , 12d  2.9h , 17d  2.6h , 22d  2.3h , 27d  2.0h.

U Coronae Borealis

Eclipses last for approx 12 hours. The times shown below are for the eclipse mid-point.

Apr:   2d  2.7h , 9d  0.3h , 15d  22.0h , 22d 19.7h.

May:  10d  2.0h , 16d  23.7h , 23d  21.4h , 30d 19.1h.

beta Lyrae

Both the deeper primary eclipse and less deep secondary eclipse can be followed visually. There is no period of constant brightness between eclipses.

Primary:  Apr  13-15 , 26-28 ,  May  8-10 , 21-23.

Secondary:  Apr  7-8 , 20-21 , May  2-3 , 15-16 , 28-29.

beta Persei (Algol)

Eclipses last for approx 10 hours. The times shown below are for the eclipse mid-point. Eclipses are total, so there is a period of constant brightness around the middle of the eclipse.

Date Mid-Eclipse(UT)
April 7 23.5h
April 10 20.3h
April 28 1.2h
April 30 22.0h
May 20 23.7h
 

Added by: Tracie Heywood