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* The Besselian Elements are the input data needed for the algorithms of the BASIC computer program presented in the Occultations chapter of the book Astronomical Tables of the Sun, Moon and Planets by Jean Meeus. With that program one can determine local timings for occultations, and the graze latitudes for various geographic longitudes during 2010-2040.


© Curt Renz

  Occultations

Occult 07 Occult 08 Occult 09 Occult 01 Occult 02 Occult 03 Occult 06 Occult 05 Occult 04

Moon Occults 39 Cancri - Graze Map - 2020 FEB 08

Graze map of North America for lunar occultation of magnitude +6.4 Beehive Cluster star Full occultation north of the only graze path


Moon Occults 39 Cancri - Chicago - 2020 FEB 08

Preview of the Moon occulting the magnitude +6.4 Beehive Cluster star as seen from the Adler Planetarium in Chicago during the predawn hours


Moon Occults 39 Cancri - Besselian Elements* - 2020 FEB 08

Besselian elements derived from Solex & Simbad positions & presented in format of Jean Meeus for input into occultation software - Also view of Earth & Moon as seen from the star


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Occultations - Chicago - Night - Mag < +4.1


2020 FEB 05  Mag +3.3  Eta Geminorum

2020 FEB 05  Mag +2.9  Mu Geminorum

2020 FEB 08  Mag +6.4  39 Cnc (Beehive)

2020 FEB 18  Mag +1.2  Mars

2020 AUG 13  Mag +3.5  Epsilon Tauri

2020 SEP 21  Mag +2.6  Beta Scorpii

2021 MAY 16  Mag +3.6  Kappa Geminorum

2021 DEC 23  Mag +3.4  Eta Leonis

2022 FEB 22  Mag +2.8  Alpha Librae

2022 MAR 15  Mag +3.4  Eta Leonis

2022 SEP 05  Mag +3.3  Tau Sagittarii

2022 OCT 20  Mag +3.4  Eta Leonis

2022 DEC 07  Mag -1.9  Mars

2022 DEC 13  Mag +3.4  Eta Leonis


   The Beehive Cluster (Praesepe - M44) is participating in a series of 25 monthly lunar occultations from 2018 MAY 20 to 2020 MAR 06. Three are observable from Chicago. The Beehive star listed above is the brightest one involved in that night’s numerous Beehive occultations, although dimmer than our stated threshold.




Moon Occults Eta Geminorum - Graze Map - 2020 FEB 05-06

Graze map of North America and Europe for the lunar occultation of magnitude +3.3 star Full occultation between of the two graze paths


Moon Occults Eta Geminorum - Chicago - 2020 FEB 05

Preview of the Moon occulting the magnitude +3.3 star as seen from the Adler Planetarium in Chicago during the evening


Moon Occults Eta Gem - Besselian Elements* - 2020 FEB 06

Besselian elements derived from Solex & Simbad positions & presented in format of Jean Meeus for input into occultation software - Also view of Earth & Moon as seen from the star


Moon Occults Mu Geminorum - Chicago - 2019 FEB 05

Preview of the Moon occulting the magnitude +2.9 star as seen from the Adler Planetarium in Chicago during the late evening


Moon Occults Mu Gem - Besselian Elements* - 2019 FEB 06

Besselian elements derived from Solex & Simbad positions & presented in format of Jean Meeus for input into occultation software - Also view of Earth & Moon as seen from the star


Moon Occults Mu Geminorum - Graze Map - 2019 FEB 05-06

Graze map of North American continent for the  lunar occultation of the magnitude +2.9 star Full occultation between of the two graze paths