Introduction

The Six Millennium Catalog of Lunar Eclipses is organized into a series of sixty 100-year web pages, each one covering a century of lunar eclipses. The 100-year table below covers the period 0801 to 0900 (801 CE to 900 CE) [1]. The date and time of each eclipse is given for the instant of Greatest Eclipse [2]. Each eclipse date links to a web page containing additional details and a map showing the geographic region of eclipse visibility for that eclipse. A description of each parameter in the catalog table can be found in Key to Catalog of Lunar Eclipses.

For an explanation of how eclipses are classified, see Lunar Eclipse Basics. The frequency of each eclipse type, the extremes in eclipse magnitude and duration, and other data for the century are presented in the Eclipse Statistics tables following the Catalog of Lunar Eclipses. To select a different century, visit the Index to Six Millennium Catalog of Lunar Eclipses.

Statistics for Lunar Eclipses: 0801 to 0900 (801 CE to 900 CE)

During the 9th century CE [1], Earth experienced 228 lunar eclipses. The following table shows the number of eclipses of each type over this period.

Lunar Eclipses: 0801 - 0900
Eclipse Type	Symbol	Number	Percent
All Eclipses	-	228	100.0%
Penumbral	N	79	34.6%
Partial	P	60	26.3%
Total	T	89	39.0%

Total eclipses can be further classified as either central or non-central:

• Central - Some portion of the Moon passes directly through the center of Earth’s umbral shadow.
  These are the deepest and longest type of lunar eclipse.
• Non-Central - The Moon passes completely within Earth’s umbral shadow but misses the center of the umbra.

The statistical distribution of these classes during the 9th century CE appears in the following table.

Total Eclipses
Classification	Number	Percent
All	89	100.0%
Central	24	27.0%
Non-Central	65	73.0%

There are two to five lunar eclipses in every calendar year. Statistics for the number of eclipses each year during the century are listed below.

Number of Eclipses Per Year
Number of Eclipses Per Year	Number of Years
2	79
3	14
4	7
5	0

The lunar eclipses with the longest and shortest durations, and with the largest and smallest magnitudes appear in the following two tables.

Extreme Durations of Lunar Eclipses
Extrema Type	Date	Duration
Longest Total Lunar Eclipse	0875 Jun 22	01h45m26s
Shortest Total Lunar Eclipse	0896 Oct 25	00h09m15s
Longest Partial Lunar Eclipse	0831 Apr 30	03h27m48s
Shortest Partial Lunar Eclipse	0881 Feb 18	00h17m42s
Longest Penumbral Lunar Eclipse	0822 May 09	04h46m56s
Shortest Penumbral Lunar Eclipse	0859 May 20	00h07m28s

Extreme Magnitudes of Lunar Eclipses
Extrema Type	Date	Umbral Magnitude	Penumbral Magnitude
Largest Total Lunar Eclipse	0810 Jun 20	1.83698	-
Smallest Total Lunar Eclipse	0896 Oct 25	1.00315	-
Largest Partial Lunar Eclipse	0872 Feb 28	0.97348	-
Smallest Partial Lunar Eclipse	0881 Feb 18	0.00544	-
Largest Penumbral Lunar Eclipse	0816 Aug 11	-	1.03485
Smallest Penumbral Lunar Eclipse	0859 May 20	-	0.00061

When four consecutive lunar eclipses are all total eclipses, the series is known as a tetrad. The following table lists the dates of all total eclipses in the 8 tetrads occurring during this century.

Lunar Eclipse Tetrad Series
Series Number	First Eclipse	Second Eclipse	Third Eclipse	Fourth Eclipse
1	0802 May 21	0802 Nov 13	0803 May 10	0803 Nov 03
2	0813 Apr 19	0813 Oct 13	0814 Apr 08	0814 Oct 03
3	0824 Mar 18	0824 Sep 12	0825 Mar 08	0825 Sep 01
4	0842 Mar 30	0842 Sep 23	0843 Mar 19	0843 Sep 12
5	0860 Apr 09	0860 Oct 03	0861 Mar 30	0861 Sep 22
6	0878 Apr 20	0878 Oct 15	0879 Apr 10	0879 Oct 04
7	0889 Mar 21	0889 Sep 13	0890 Mar 10	0890 Sep 02
8	0900 Feb 18	0900 Aug 13	0901 Feb 06	0901 Aug 03

During the century, 3 Saros series begin and 3 Saros series end. The table below gives the Saros series, number of eclipses in the series, the calendar date and whether it is the first or last eclipse in the series.

First or Last Eclipse in Saros Series
Saros Series	Number of Eclipses	Date	Pernumbral Magnitude	First/Last
71	72	0808 Jul 11	0.0630	Last
66	84	0826 Jan 27	0.0091	Last
111	71	0830 Jun 10	0.0456	First
112	72	0859 May 20	0.0006	First
113	71	0888 Apr 29	0.0751	First
72	73	0891 Jul 25	0.0140	Last

There are two lunar eclipses in the same same calendar month as follows: 877 May.

Footnotes

[1] The terms BCE and CE are abbreviations for "Before Common Era" and "Common Era," respectively. They are the secular equivalents to the BC and AD dating conventions. (See: Year Dating Conventions)

[2] Greatest eclipse is defined as the instant when the center of the Moon passes closest to the axis of Earth's shadows.

Index to Six Millennium Catolog of Lunar Eclipses

The links in the following table each open a web page containing a 100-year Catalog of Lunar Eclipses. Each line in a 100-year catalog lists the primary characteristics for a single eclipse; the eclipse date itself links to a web page containing further details, an eclipse diagram and map showing the geographic region of eclipse visibility.

Index to Six Millennium Catalog of Lunar Eclipses
Centuries
	-2999 to -2900	-2899 to -2800	-2799 to -2700	-2699 to -2600	-2599 to -2500
	-2499 to -2400	-2399 to -2300	-2299 to -2200	-2199 to -2100	-2099 to -2000
	-1999 to -1900	-1899 to -1800	-1799 to -1700	-1699 to -1600	-1599 to -1500
	-1499 to -1400	-1399 to -1300	-1299 to -1200	-1199 to -1100	-1099 to -1000
	-0999 to -0900	-0899 to -0800	-0799 to -0700	-0699 to -0600	-0599 to -0500
	-0499 to -0400	-0399 to -0300	-0299 to -0200	-0199 to -0100	-0099 to 0000
	0001 to 0100	0101 to 0200	0201 to 0300	0301 to 0400	0401 to 0500
	0501 to 0600	0601 to 0700	0701 to 0800	0801 to 0900	0901 to 1000
	1001 to 1100	1101 to 1200	1201 to 1300	1301 to 1400	1401 to 1500
	1501 to 1600	1601 to 1700	1701 to 1800	1801 to 1900	1901 to 2000
	2001 to 2100	2101 to 2200	2201 to 2300	2301 to 2400	2401 to 2500
	2501 to 2600	2601 to 2700	2701 to 2800	2801 to 2900	2901 to 3000

These web pages are part of the Six Millennium Catalog of Lunar Eclipses: -2999 to +3000

Links to Additional Lunar Eclipse Information

• Home - home page of EclipseWise with predictions for both solar and lunar eclipses

• Lunar Eclipses - primary page for lunar eclipse predictions
• Lunar Eclipse Links - detailed directory of links

• Six Millennium Catalog of Lunar Eclipses - covers the years -2999 to +3000 (3000 BCE to 3000 CE)
• Saros Catalog of Lunar Eclipses - covers Saros series -29 through 190
• Javascript Lunar Eclipse Explorer - calculate all lunar eclipses visible from a city

• Thousand Year Canon of Lunar Eclipses 1501 to 2500 - link to the publication

• MrEclipse.com - eclipse resources and tips on photography
• Lunar Eclipses for Beginners - a primer on lunar eclipse basics
• How to Photograph a Lunar Eclipse - instructions for imaging an eclipse of the Moon
• MrEclipse Photo Index - an index of lunar eclipse photographs

Calendar

The Gregorian calendar (also called the Western calendar) is internationally the most widely used civil calendar. It is named for Pope Gregory XIII, who introduced it in 1582. On this website, the Gregorian calendar is used for all calendar dates from 1582 Oct 15 onwards. Before that date, the Julian calendar is used. For more information on this topic, see Calendar Dates.

The Julian calendar does not include the year 0. Thus the year 1 BCE is followed by the year 1 CE (See: BCE/CE Dating Conventions). This is awkward for arithmetic calculations. Years in this catalog are numbered astronomically and include the year 0. Historians should note there is a difference of one year between astronomical dates and BCE dates. Thus, the astronomical year 0 corresponds to 1 BCE, and astronomical year -1 corresponds to 2 BCE, etc..

Eclipse Predictions

The eclipse predictions presented here were generated using the JPL DE406 solar and lunar ephemerides. The lunar coordinates have been calculated with respect to the Moon's Center of Mass.

The largest uncertainty in the eclipse predictions is caused by fluctuations in Earth's rotation due primarily to tidal friction of the Moon. The resultant drift in apparent clock time is expressed as ΔT and is determined as follows:

1. pre-1950's: ΔT calculated from empirical fits to historical records derived by Morrison and Stephenson (2004)
2. 1955-present: ΔT obtained from published observations
3. future: ΔT is extrapolated from current values weighted by the long term trend from tidal effects

A series of polynomial expressions have been derived to simplify the evaluation of ΔT for any time from -2999 to +3000. The uncertainty in ΔT over this period can be estimated from scatter in the measurements.

Acknowledgments

Some of the content on this web site is based on the book Thousand Year Canon of Lunar Eclipses 1501 to 2500. All eclipse calculations are by Fred Espenak, and he assumes full responsibility for their accuracy.

Permission is granted to reproduce eclipse data when accompanied by a link to this page and an acknowledgment:

"Eclipse Predictions by Fred Espenak, www.EclipseWise.com"

The use of diagrams and maps is permitted provided that they are NOT altered (except for re-sizing) and the embedded credit line is NOT removed or covered.