2023 BRIGHT STAR OCCULTATIONS

All times given in these predictions are in Universal Time. Predictions included both disappearance and reappearance times, although depending on the phase of the moon, one or the other may not be possible to observe at the instant of the event. When Moon % is "+" (waxing), the star will disappear on the dark side (DD), and reappearance is on the bright side (RB); when the Moon % is "-" (waning), the star will disappear on the bright side (DB), and reappear on the dark side (RD). Observing disappearances and reappearance of stars on the bright side are difficult, and accuracies in timing these events are not reliable. Therefore they are not given in the predictions.

Observers are encouraged to download and install the Occult software program to generate predictions for their own particular site coordinates. Occult will generate stars fainter than what are shown here, which can be suited to the size of your telescope. The Occult software includes a tutorial on getting it set up for your location and how to generate your first set of predictions. A PDF file written by David Dunhams about the Occult predictions and software can also give added information.

The world map is a Mercator projection showing the basic circumstances of an occultation:

Where a line represent a feature of the event is located in the polar regions, remember that the Mercator projection gives rise to serious distortions in polar regions.

Predictions and world path maps were generated using Occult v4.2022.x.x

Note: Cities will be prefixed with their 2 letter country code. Those for the United States will also include the 2 letter state code after the city. For a complete listing of the 2 letter country codes used in the predictions please download this PDF file for reference.

How to convert the predicted time to your site location time using the A/B factor

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DATE STAR NAME MAG PH % ILL GENERAL AREA







17 Dec 2022 ZC1821 γ Vir 2.8m RD -37% Hawaii







10 Jan 2023 ZC1484 η Leonis 3.5m RD 89- Hawaii, Easter Island
12 Jan 2023 ZC1702 ν Vir 4.0m RD 73- Australia
13 Jan 2023 ZC1821 γ Vir 2.8m RD 61- w central Africa, southern Middle East
16 Jan 2023 ZC2118 α Lib 2.8m RD 33- New Zealand
17 Jan 2023 ZC2290 δ Sco 2.3m RD 21- se Asia







06 Feb 2023 ZC1484 η Leo 3.5m RD 99- India, se Asia, Australia
10 Feb 2023 ZC1821 γ Vir 2.8m RD -82 South America
16 Feb 2023 ZC2721 φ Sag 3.2m RD 16- New Zealand
17 Feb 2023 ZC2784 τ Sag 3.3m RD 13- w central Africa







02 Mar 2023 ZC1122 ι Gem 3.8m DD 80+ southern Africa, Madagascar
06 Mar 2023 ZC1484 η Leo 3.5m DD 98+ southern Africa, w Africa
09 Mar 2023 ZC1821 γ Vir 2.8m RD 96- New Zealand
13 Mar 2023 ZC2290 δ Sco 2.3m RD 67- New Zealand
16 Mar 2023 ZC2721 φ Sag 3.2m RD 37- southern Africa







02 Apr 2023 ZC1484 η Leo 3.5m DD 86+ Hawaii, French Polynesia
05 Apr 2023 ZC1821 γ Vir 2.8m DD 100+ se Africa
09 Apr 2023 ZC2290 δ Sco 2.3m RD 86- New Zealand
10 Apr 2023 ZC2349 σ Sco 2.9m RD 83- Europe, nw Asia
12 Apr 2023 ZC2784 τ Sag 3.3m RD 56- Australia, Indonesia
26 Apr 2023 ZC1122 ι Gem 3.8m DD 36+ Australia
29 Apr 2023 ZC1484 η Leo 3.5m DD 66+ India, s Indonesia







03 May 2023 ZC1821 γ Vir 2.8m DD 92+ s South America
07 May 2023 ZC2349 σ Sco 2.9m RD 96- w USA, Canada
07 May 2023 ZC2290 δ Sco 2.3m RD 98- South America
10 May 2023 ZC2784 τ Sag 3.3m RD 78- s Africa, Madagascar
26 May 2023 ZC1484 η Leo 3.5m DD 44+ central South America
30 May 2023 ZC1772 η Vir 3.9m DD 72+ Scandinavia
30 May 2023 ZC1821 γ Vir 2.8m DD 76+ w Australia







03 Jun 2023 ZC2290 δ Sco 2.3m DD 99+ Australia, New Zealand, s So America
06 Jun 2023 ZC2784 τ Sag 3.3m RD 93- ne South America, Easter Island
06 Jun 2023 ZC2721 φ Sag 3.2m RD 95- s South America
23 Jun 2023 ZC1484 η Leo 3.5m DD 22+ e Australia, New Zealand
26 Jun 2023 ZC1772 η Vir 3.9m DD 50+ ne Asia, Alaska







23 Jul 2023 ZC1772 η Vir 3.9m DD 28+ Middle East
28 Jul 2023 ZC2290 δ Sco 2.3m DD 73+ Australia
28 Jul 2023 ZC2349 σ Sco 2.9m DD 77+ se Asia
31 Jul 2023 ZC2784 τ Sag 3.3m DD 96+ n South America







19 Aug 2023 ZC1772 η Vir 3.9m DD 11+ nw South America
24 Aug 2023 ZC2366 α Sco 1.1m DD 57+ USA, s Canada
27 Aug 2023 ZC2721 φ Sag 3.2m DD 80+ s South America
27 Aug 2023 ZC2784 τ Sag 3.3m DD 83+ Indonesia







05 Sep 2023 ZC560 27 Tau 3.6m RD 60- Australia
09 Sep 2023 ZC1122 ι Gem 3.8m RD 23- New Zealand
21 Sep 2023 ZC2349 σ Sco 2.9m DD 33+ Japan, Hawaii
21 Sep 2023 ZC2366 α Sco 1.1m DD 34+ e Asia
23 Sep 2023 ZC2784 τ Sag 3.3m DD 62+ e South America







07 Oct 2023 ZC1122 ι Gem 3.8m RD 45- southern Africa
10 Oct 2023 ZC1484 η Leo 3.5m RD 17- e South America
18 Oct 2023 ZC2349 σ Sco 2.9m DD 14+ se Asia
18 Oct 2023 ZC2366 α Sco 1.1m DD 15+ e Europe, Middle East
30 Oct 2023 ZC552 η Tau 2.9m RD 96- e Australia
30 Oct 2023 ZC560 27 Tau 3.6m RD 96- Australia







06 Nov 2023 ZC1484 η Leo 3.5m RD 37- French Polynesia
09 Nov 2023 ZC1772 η Vir 3.9m RD 13- ne Asia, w Alaska
17 Nov 2023 ZC2784 τ Sag 3.3m DD 18+ nw Australia, Indonesia







04 Dec 2023 ZC1484 η Leo 3.5m RD 61- s Africa, Madagascar
07 Dec 2023 ZC1772 η Vir 3.9m RD 32- Europe, Middle East, w Asia

NO MORE BRIGHT STAR OCCULTATIONS FOR 2023

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