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{{Short description|Penumbral lunar eclipse September 6, 1998}}
{{Infobox lunar eclipse
| type = penumbral
| image = Lunar eclipse chart close-1998Sep06.png
| caption = The Moon's hourly motion shown right to left
| date = September 6, 1998
| gamma = −1.1058
| magnitude = −0.1544
| saros_ser = 147
| saros_no = 8 of 71
| penumbral = 227 minutes, 46 seconds
| p1 = 9:16:16
| greatest = 11:10:07
| p4 = 13:04:02
| previous = August 1998
| next = January 1999
}}
A penumbral [[lunar eclipse]] occurred at the Moon’s [[Lunar node|descending node]] of orbit on Sunday, September 6, 1998,<ref>{{cite web|title=September 6, 1998 Penumbral Lunar Eclipse|url=https://www.timeanddate.com/eclipse/lunar/1998-september-6|publisher=timeanddate|access-date=9 January 2025}}</ref> with an umbral [[Magnitude of eclipse|magnitude]] of −0.1544. A lunar eclipse occurs when the [[Moon]] moves into the [[Earth's shadow]], causing the Moon to be darkened. A penumbral lunar eclipse occurs when part or all of the Moon's near side passes into the Earth's penumbra. Unlike a [[solar eclipse]], which can only be viewed from a relatively small area of the world, a lunar eclipse may be viewed from anywhere on the [[night]] side of Earth. Occurring about 1.8 days before [[Apsis|perigee]] (on September 8, 1998, at 7:00 UTC), the Moon's apparent diameter was larger.<ref>{{cite web|title=Moon Distances for London, United Kingdom, England|url=https://www.timeanddate.com/astronomy/moon/distance.html?year=1998&n=136|publisher=timeanddate|access-date=9 January 2025}}</ref>

== Visibility ==
The eclipse was completely visible over [[northeast Asia]], much of [[Australia]], western [[North America]] and the [[Pacific Ocean]], seen rising over [[east Asia|east]] and [[southeast Asia]] and western Australia and setting over much of North and [[South America]].<ref>{{cite web|title=Penumbral Lunar Eclipse of 1998 Sep 06|url=https://eclipse.gsfc.nasa.gov/LEplot/LEplot1951/LE1998Sep06N.pdf|publisher=NASA|access-date=9 January 2025}}</ref>

{| class=wikitable
|[[File:Lunar eclipse from moon-1998Sep06.png|300px]] [[File:Lunar eclipse chart close-1998Sep06.png|300px]]
|}

== Eclipse details ==
Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.<ref>{{cite web|title=Penumbral Lunar Eclipse of 1998 Sep 06|url=https://eclipsewise.com/lunar/LEprime/1901-2000/LE1998Sep06Nprime.html|publisher=EclipseWise.com|access-date=9 January 2025}}</ref>

{|class="wikitable" align="{{{align|left}}}" style="margin:{{#ifeq:{{{align}}}|right|0 0 0.5em 1em|0 1em 0.5em 0}}"
|+September 6, 1998 Lunar Eclipse Parameters
! Parameter
! Value
|-
| Penumbral Magnitude
| 0.81217
|-
| Umbral Magnitude
| −0.15437
|-
| Gamma
| −1.10579
|-
| Sun Right Ascension
| 10h59m47.2s
|-
| Sun Declination
| +06°25'26.3"
|-
| Sun Semi-Diameter
| 15'52.1"
|-
| Sun Equatorial Horizontal Parallax
| 08.7"
|-
| Moon Right Ascension
| 23h01m06.1s
|-
| Moon Declination
| -07°29'07.2"
|-
| Moon Semi-Diameter
| 16'25.0"
|-
| Moon Equatorial Horizontal Parallax
| 1°00'15.2"
|-
| ΔT
| 63.3 s
|}
{{clear}}

== Eclipse season ==
{{See also|Eclipse cycle}}
This eclipse is part of an [[eclipse season]], a period, roughly every six months, when eclipses occur. Only two (or occasionally three) eclipse seasons occur each year, and each season lasts about 35 days and repeats just short of six months (173 days) later; thus two full eclipse seasons always occur each year. Either two or three eclipses happen each eclipse season. In the sequence below, each eclipse is separated by a [[fortnight]]. The first and last eclipse in this sequence is separated by one [[month#Synodic month|synodic month]].

{| class="wikitable"
|+ Eclipse season of August–September 1998
! [[August 1998 lunar eclipse|August 8]] Descending node (full moon) !! [[Solar eclipse of August 22, 1998|August 22]] Ascending node (new moon) !! September 6 Descending node (full moon) 
|-
| [[File:Lunar eclipse chart close-1998Aug08.png|200px]] || [[File:SE1998Aug22A.png|200px]] || [[File:Lunar eclipse chart close-1998Sep06.png|200px]]
|- align=center
| [[Lunar eclipse#Types of lunar eclipse|Penumbral lunar eclipse]] Lunar Saros 109 || [[Total eclipse#Types|Annular solar eclipse]] Solar Saros 135 || [[Lunar eclipse#Types of lunar eclipse|Penumbral lunar eclipse]] Lunar Saros 147
|}

== Related eclipses ==
=== Eclipses in 1998 ===
* [[Solar eclipse of February 26, 1998|A total solar eclipse on February 26]].
* [[March 1998 lunar eclipse|A penumbral lunar eclipse on March 13]].
* [[August 1998 lunar eclipse|A penumbral lunar eclipse on August 8]].
* [[Solar eclipse of August 22, 1998|An annular solar eclipse on August 22]].
* '''A penumbral lunar eclipse on September 6.'''

=== Metonic ===
* Preceded by: [[November 1994 lunar eclipse|Lunar eclipse of November 18, 1994]]
* Followed by: [[June 2002 lunar eclipse|Lunar eclipse of June 24, 2002]]

=== Tzolkinex ===
* Preceded by: [[July 1991 lunar eclipse|Lunar eclipse of July 26, 1991]]
* Followed by: [[October 2005 lunar eclipse|Lunar eclipse of October 17, 2005]]

=== Half-Saros ===
* Preceded by: [[Solar eclipse of August 31, 1989]]
* Followed by: [[Solar eclipse of September 11, 2007]]

=== Tritos ===
* Preceded by: [[October 1987 lunar eclipse|Lunar eclipse of October 7, 1987]]
* Followed by: [[August 2009 lunar eclipse|Lunar eclipse of August 6, 2009]]

=== Lunar Saros 147 ===
* Preceded by: [[August 1980 lunar eclipse|Lunar eclipse of August 26, 1980]]
* Followed by: [[September 2016 lunar eclipse|Lunar eclipse of September 16, 2016]]

=== Inex ===
* Preceded by: [[September 1969 lunar eclipse|Lunar eclipse of September 25, 1969]]
* Followed by: [[August 2027 lunar eclipse|Lunar eclipse of August 17, 2027]]

=== Triad ===
* Preceded by: [[November 1911 lunar eclipse|Lunar eclipse of November 6, 1911]]
* Followed by: [[July 2085 lunar eclipse|Lunar eclipse of July 7, 2085]]

=== Lunar eclipses of 1995–1998 ===
{{Lunar eclipse set 1995-1998}}

=== Saros 147 ===
{{Lunar Saros series 147}}

=== Tritos series ===
{{Lunar Tritos series August 2009}}

=== Inex series ===
{{Lunar Inex series August 2027}}

=== Half-Saros cycle ===
A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a [[Saros (astronomy)#Relationship between lunar and solar saros .28sar.29|half saros]]).<ref>Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, ''The half-saros''</ref> This lunar eclipse is related to two partial solar eclipses of [[Solar Saros 154]].
{| class=wikitable
![[Solar eclipse of August 31, 1989|August 31, 1989]]
![[Solar eclipse of September 11, 2007|September 11, 2007]]
|-
|[[File:SE1989Aug31P.png|240px]]
|[[File:SE2007Sep11P.png|240px]]
|}

==See also==
*[[List of lunar eclipses]]
*[[List of 20th-century lunar eclipses]]

==References==
{{Reflist}}

==External links==
* [http://www.hermit.org/eclipse/gen_stats.cgi?mode=query&page=full&qtype=type&body=L&saros=147 Saros cycle 147]
* {{LEplot1951 link|1998|Sep|06|N}}

{{Lunar eclipses}}

{{DEFAULTSORT:Lunar eclipse 1998-09}}
[[Category:20th-century lunar eclipses|1998-09]]
[[Category:1998 in science]]
[[Category:September 1998]]

September 1998 lunar eclipse - Revision history

imported>BunnysBot: Fix CW Errors with GenFixes (T1), removed stub tag