View Full Version : Moon Occults Aldebaran - Evening of 2017 NOV 05

2017-Oct-27, 06:09 PM
The waning gibbous Moon will occult (cover) the first magnitude star Aldebaran in Taurus for observers in eastern North America and northern Europe during the night of 2017 NOV 05-06. This will be an evening event for North Americans and a predawn event for Europeans.

The current series of 49 monthly Aldebaran occultations extends from 2015 JAN 29 to 2018 SEP 03. However this one and the one on 2017 DEC 30-31 will be the last ones in this series visible from Chicagoland and most of North America. The next series will commence on 2033 AUG 18.

Immersion will occur on the lunar bright limb and emersion on the dark limb. An observer on the only graze path will witness the star winking on and off as lunar hills and valleys pass by. Those north of the graze path will see a full occultation.

Iíve created a graze map, a set of Besselian elements for computer input, and preview graphics with data for Chicago. They can be seen by visiting my Occultations webpage at www.CurtRenz.com/occultations.html

Photos and descriptions of the occultation would be welcome additions to this thread. If you would like specific occultation or graze predictions for your location, please reply to this post with your longitude, latitude, elevation and time zone.

2017-Nov-05, 03:29 PM
Tonight's the night. :)