September 1998 lunar eclipse

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Template:Short description Template:Infobox lunar eclipse A penumbral lunar eclipse occurred at the Moon’s descending node of orbit on Sunday, September 6, 1998,[1] with an umbral 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 perigee (on September 8, 1998, at 7:00 UTC), the Moon's apparent diameter was larger.[2]

Visibility

The eclipse was completely visible over northeast Asia, much of Australia, western North America and the Pacific Ocean, seen rising over east and southeast Asia and western Australia and setting over much of North and South America.[3]

File:Lunar eclipse from moon-1998Sep06.png File:Lunar eclipse chart close-1998Sep06.png

Eclipse details

Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.[4]

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

Eclipse season

Script error: No such module "Labelled list hatnote". 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 synodic month.

Eclipse season of August–September 1998
August 8
Descending node (full moon)
 August 22
Ascending node (new moon)
 September 6
Descending node (full moon)
File:Lunar eclipse chart close-1998Aug08.png File:SE1998Aug22A.png File:Lunar eclipse chart close-1998Sep06.png
Penumbral lunar eclipse
Lunar Saros 109		 Annular solar eclipse
Solar Saros 135		 Penumbral lunar eclipse
Lunar Saros 147

Related eclipses

Eclipses in 1998

Metonic

Tzolkinex

Half-Saros

Tritos

Lunar Saros 147

Inex

Triad

Lunar eclipses of 1995–1998

Template:Lunar eclipse set 1995-1998

Saros 147

Template:Lunar Saros series 147

Tritos series

Template:Lunar Tritos series August 2009

Inex series

Template: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 half saros).[5] This lunar eclipse is related to two partial solar eclipses of Solar Saros 154.

August 31, 1989 September 11, 2007
File:SE1989Aug31P.png File:SE2007Sep11P.png

See also

References

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  1. ↑ Script error: No such module "citation/CS1".
  2. ↑ Script error: No such module "citation/CS1".
  3. ↑ Script error: No such module "citation/CS1".
  4. ↑ Script error: No such module "citation/CS1".
  5. ↑ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros

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External links

Template:Lunar eclipses

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