Fifty Year Almanac of Astronomical Events - 2021 To 2070

Fifty Year Almanac of Astronomical Events
2021 To 2070

Fifty Year Almanac of Astronomical Events
$14.99

Fifty Year Almanac of Astronomical Events

Fifty Year Almanac - Kindle Version
$6.99

The Fifty Year Almanac of Astronomical Events - 2021 To 2070 is a catalog listing a wide range of solar system phenomena as seen from Earth. Each year gives a concise compendium of the most conspicuous and/or significant astronomical events involving the Sun, Moon and the planets.

The astronomical events include the following.

  • solar and lunar eclipses
  • phases of the Moon
  • apogees and perigees of the Moon
  • Equinoxes and Solstices of Earth
  • aphelion and perihelion (Earth, Mars, Jupiter, Saturn and Uranus)
  • oppositions and conjunctions of the planets
  • elongations of Mercury and Venus
  • close conjunctions of the Moon with the planets and bright stars
  • close conjunctions of planets with bright stars and other planets
  • peak of major meteor showers

The date and time of each event is given in Greenwich Mean Time (= Coordinated Universal Time). With 200+ events each year, the Fifty Year Almanac includes over 10,200 astronomical events.

The Fifty Year Almanac of Astronomical Events is based on the Astropixels.com web resource Sky Event Almanacs.

Accuracy of the Fifty Year Almanac

The goal of the Fifty Year Almanac of Astronomical Events is to present a wide range of solar system phenomena with practicable accuracy. In general, events listed to the nearest hour are accurate to ± 30 minutes. Events listed with a precision in hours and minutes (i.e., hh:mm) are typically accurate to ± 5 minutes or less.

The following table gives a more detailed breakdown of the accuracy of times for various astronomical events.

Accuracy of the Fifty Year Almanac of Astronomical Events
Solstice/Equinox (Earth) ± 0.5 minute
Aphelion/Perihelion (Earth) ± 30 minutes; ± 0.00001 AU
Solar and Lunar Eclipses ± 0.5 minute
Phases of the Moon ± 0.5 minute
Moon at Nodes ± 2 minutes
Apogee/Perigee of Moon ± 5 minutes; ± 5 kilometers
Conjunctions of Moon with Star or Planet ± 10 minutes
Conjunctions of Planet with Planet ± 3 hours
Inferior/Superior Conjunctions (Mercury & Venus) ± 30 minutes
Greatest Elongation (Mercury & Venus) ± 30 minutes
Opposition/Conjunction (Outer Planets) ± 3 hours
Aphelion/Perihelion of Planets ± 30 minutes

Algorithms used in predicting many of the astronomical events are based on Astronomical Algorithms by Jean Meeus (Willmann-Bell Inc. Richmond 1998). In some cases where higher accuracy is required (e.g., eclipses, aphelion and perihelion), the predictions use the Jet Propulsion Laboratory's DE430 - the same computer ephemeris used to guide planetary spacecraft missions across the Solar System.

The Fifty Year Almanac of Astronomical Events is based on the Astropixels.com resource web Sky Event Almanacs.

Fifty Year Almanac: Sample Pages

Below are two sample pages from the Fifty Year Almanac. They cover astronomical events for the year 2021 Click on each to open a full-resolution page in PDF format.

Astronomical Events - 2021 Jan-Jun
almanac book
2001: Jan - Jun
(click to enlarge)
Astronomical Events - 2021 Jul-Dec
almanac book
2001: Jul - Dec
(click to enlarge)

Fifty Year Almanac

Link for Ordering the Fifty Year Almanac of Astronomical Events

Below is a link for ordering the Fifty Year Almanac from Amazon.com:

Fifty Year Almanac - Kindle Version

The links above are for Amazon.com. However, you can order these books from any Amazon worldwide.
Visit any Amazon and enter "Fifty Year Almanac of Astronomical Events" in Amazon's search window.

About the Author

Click the following link to read a brief biography on Fred Espenak.

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