NOTICE

Over the past 20 years, I have generated and posted bright star occultations. Beginning with the 2017 occultations, only those of 3rd magnitude and brighter will be listed.

In recent discussions, the value of total occultation have come into play. "In this day of LOLA lunar profiles and space-based astrometry (Hipparcos, & now Gaia), there is little scientific value in timing occultations now. Observations of grazes, especially video, provide enough accuracy to "push the envelope" on current knowledge, but the main value is to discover and resolve close double stars that can't be separated directly" - David Dunham (former president of the International Occultation Timing Association). Focus of IOTA has also shifted to asteroidal occultation events, and those predictions can be found at Steve Preston's web site and regional information found at Derek Breit's website.

I encourage those who are interested in observing and reporting these events, to download the Occult software (link given below), and generate predictions for their particular location/site. David Herald, author of the software states that he discovers a new binary star in about every 100 observations or so. The software will give you the opportunity to observe much fainter stars than what has previously been listed, making it possible for you to discover your own binary star systems.

There is also an interesting posting by David Herald (author of the Occult software), regarding observations of occultations.

I appreciate all the comments and help I have been given in maintaining this portion of the website.

Rob Robinson
Webmaster


2017 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 reappear on the dark side (RD), and disappearance on the bright side (DB). Observing disappearances and reappearance of stars on the bright side are difficult, and accuracies in timing these events are not reliable.

If there are no predications with the accompanying map of coverage, it is because it is either a daytime event, or in sparsely located regions where cities in the Occult database do not exist

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

  • Cyan - the curves of Occultation D or R at moonrise or moonset
  • White continuous line - the northern and southern occultation limits (graze paths), with the event occurring in nighttime
  • Blue continuous line - occultation limits, event in twilight
  • Red dotted line - occultation limits, event in daylight

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.

Events which occur during daylight or near full or new moon are not shown in the predictions

Predictions and world path maps were generated using Occult v4.1.6.1

You can generate predictions for your own site coordinates, plus many more fainter occultations, by downloading the free Occult software for your own use. After installation, there is a tutorial in the program which will guide you through the fundamental operations.

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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Or click the link below to return to the main entry page on the IOTA website


DATE STAR NAME MAG PH % ILL GENERAL AREA







03 JAN 17 ZC3353 θ Aqr 3.7 DD 24 Indonesia
09 JAN 17 ZC635 γ Tau 3.7 DD 86 USA, Canada, Aslaska, ne Asia
09 JAN 17 ZC669 θ1 Tau 3.8 DD 87 nw Canada, Alaska, e Asia
09 JAN 17 ZC671 θ2 Tau 3.4 DD 87 nw Canada, Alaska, e Asia
09 JAN 17 ZC692 α Tau 0.9 DD 88 Asia
15 JAN 17 ZC1487 α Leo 1.4 RD 91- southern South America
15 JAN 17 ZC1547 ρ Leo 3.8 RD 88- se Asia, n Indonesia
18 JAN 17 ZC1821 ν Vir 2.8 RD 65- e USA, Caribbean
18 JAN 17 X54027 X54027 3.5 RD 65- e USA, Caribbean
22 JAN 17 ZC2223 γ Lib 3.9 RD 30- w Asia
05 FEB 17 ZC635 γ Tau 3.7 DD 66 Asia
05 FEB 17 ZC669 θ1 Tau 3.8 DD 68 Europe, w Asia, n Africa
05 FEB 17 ZC671 θ2 Tau 3.4 DD 68 Europe, w Asia, n Africa
05 FEB 17 ZC692 α Tau 0.9 DD 69 n Africa, s Europe
11 FEB 17 ZC1487 α Leo 1.4 RD 100- Australia, New Zealand
12 FEB 17 ZC1547 ρ Leo 3.8 RD 99- central Africa
14 FEB 17 ZC1821 γ Vir 2.8 RD 86- e Asia
14 FEB 17 X54027 X54027 3.5 RD 86- e Asia
22 FEB 17 ZC2826 ρ Sag 3.9 RD 14- sw Australia
04 MAR 17 ZC635 γ Tau 3.7 DD 43 Europe, n Africa
04 MAR 17 ZC669 θ1 Tau 3.8 DD 44 e USA, e Canada, s Greenland
04 MAR 17 ZC671 θ2 Tau 3.4 DD 44 e USA, e Canada, s Greenland
05 MAR 17 ZC692 α Tau 0.9 DD 46 USA, Mexico, Central America
10 MAR 17 ZC1487 α Leo 1.4 DD 97 s Africa
11 MAR 17 ZC1547 ρ Leo 3.8 DD 98 Hawaii
14 MAR 17 ZC1821 γ Vir 2.8 RD 98- sw Europe, n Africa
14 MAR 17 X54027 X54027 3.5 RD 98- sw Europe, n Africa
17 MAR 17 ZC2223 γ Lib 3.9 RD 76- ne Asia
22 MAR 17 ZC2826 ρ Sag 3.9 RD 35- se South America
01 APR 17 ZC635 γ Tau 3.7 DD 21 USA, ne Canada
01 APR 17 ZC669 θ1 Tau 3.8 DD 22 Alaska, nw Canada
01 APR 17 ZC671 θ2 Tau 3.4 DD 22 Alaska, nw Canada
01 APR 17 ZC692 α Tau 0.9 DD 24 s Asia, Japan, Korea
07 APR 17 ZC1487 α Leo 1.4 DD 84 s South America
07 APR 17 ZC1547 ρ Leo 3.8 DD 87 s Asia, Indonesia
10 APR 17 ZC1821 γ Vir 2.8 DD 99 sw USA, Mexico, Central America, Hawaii
10 APR 17 X54027 X54027 3.5 DD 99 sw USA, Mexico, Central America, Hawaii
14 APR 17 ZC2223 γ Lib 3.9 RD 93- Europe, n Africa, w Asia
22 APR 17 ZC3353 λ Aqr 3.7 RD 18- New Zealand
28 APR 17 ZC635 γ Tau 3.7 DD 6 ne Asia
28 APR 17 ZC669 θ1 Tau 3.8 DD 7 central Asia
28 APR 17 ZC671 θ2 Tau 3.4 DD 7 n central Asia
28 APR 17 ZC692 α Tau 0.9 DD 7 e Europe, n central Africa
04 MAY 17 ZC1487 α Leo 1.4 DD 64 Australia, New Zealand
04 MAY 17 ZC1547 ρ Leo 3.8 DD 69 n Africa, sw Europe
07 MAY 17 ZC1821 γ Vir 2.8 DD 90 se Asia, n Indonesia
07 MAY 17 X54027 X54027 3.5 DD 90 se Asia, n Indonesia
11 MAY 17 ZC2223 γ Lib 3.9 RD -100 USA, Mexico, Central America
31 MAY 17 ZC1487 α Leo 1.4 DD 41 central Africa, Madagascar
01 JUN 17 ZC1547 ρ Leo 3.8 DD 46 USA, Mexico
03 JUN 17 ZC1821 γ Vir 2.8 DD 72 n Africa
03 JUN 17 X54027 X54027 3.5 DD 72 n Africa
07 JUN 17 ZC2223 γ Lib 3.9 DD 96 sw Asia
27 JUN 17 ZC1487 α Leo 1.4 DD 20 w South America
28 JUN 17 ZC1547 ρ Leo 3.8 DD 25 e Asia
01 JUL 17 ZC1821 γ Vir 2.8 DD 51 ne USA, e Canada
01 JUL 17 X54027 X54027 3.5 DD 51 ne USA, e Canada
04 JUL 17 ZC2223 γ Lib 3.9 DD 83 e Europe, ne Africa, Middle East
19 JUL 17 ZC635 γ Tau 3.7 RD 19- Japan, Korea
19 JUL 17 ZC669 θ1 Tau 3.8 RD 17- e Asia
19 JUL 17 ZC671 θ2 Tau 3.4 RD 17- e Asia
19 JUL 17 ZC692 α Tau 0.9 RD 16- sw Asia
25 JUL 17 ZC1487 α Leo 1.4 DD 6 w Indonesia
28 JUL 17 ZC1821 γ Vir 2.8 DD 29 ne Asia
28 JUL 17 X54027 X54027 3.5 DD 29 ne Asia
15 AUG 17 ZC635 γ Tau 3.7 RD 39- se Europe, Middle East, w Asia
16 AUG 17 ZC669 θ1 Tau 3.8 RD 37- nw Africa, sw Europe
16 AUG 17 ZC671 θ2 Tau 3.4 rd 37- nw Africa, sw Europe
16 AUG 17 ZC692 α Tau 0.9 RD 36- n central South America, Caribbean
28 AUG 17 ZC2223 γ Lib 3.9 DD 41 ne Asia
12 SEP 17 ZC635 γ Tau 3.7 RD 62- e USA, ne Canada, Caribbrean
12 SEP 17 ZC669 θ1 Tau 3.8 RD -60 USA, Canada, Alaska
12 SEP 17 ZC671 θ2 Tau 3.4 RD 60- nw USA, Canada, Alaska
12 SEP 17 ZC692 α Tau 0.9 RD 58- w USA, Hawaii
24 SEP 17 ZC2223 γ Lib 3.9 DD 20 nw Africa
09 OCT 17 ZC635 γ Tau 3.7 RD 82- Alaska, nw Canada, ne Asia
09 OCT 17 ZC669 θ1 tau 3.8 RD 81- e Asia
09 OCT 17 ZC671 θ2 Tau 3.4 RD 81- e Asia
09 OCT 17 ZC692 α Tau 0.9 RD 80- Asia
15 OCT 17 ZC1487 α Leo 1.4 RD 19- USA, Mexico
05 NOV 17 ZC635 γ Tau 3.7 RD -96 Europe, n Asia
05 NOV 17 ZC648 δ1 Tau 3.8 RD 96- s Africa, s Madagascar
05 NOV 17 ZC669 θ1 Tau 3.8 RD 95- n Europe, n Asia
06 NOV 17 ZC692 α Tau 0.9 RD 95- e USA, e Canada, Greenland, n Europe
11 NOV 17 ZC1487 α Leo 1.4 RD 41- ne Asia, s Alaska
03 DEC 17 ZC692 α Tau 0.9 DD 100 ne Asia, Alaska, nw Canada
08 DEC 17 ZC1487 α Leo 1.4 RD 64- n Europe, n Asia
15 DEC 17 ZC2223 γ Lib 3.9 RD 6- nw USA, sw Canada
30 DEC 17 ZC635 γ Tau 3.7 DD 92 n Asia, n Europe
30 DEC 17 ZC648 δ1 Tau 3.8 DD 92 s Africa, Madagascar
30 DEC 17 ZC669 θ1 Tau 3.8 DD 93 n Europe, n Asia
30 DEC 17 ZC692 α Tau 0.9 DD 93 e USA, e Canada, Greenland, n Europe


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