A total penumbral lunar eclipse is a lunar eclipse that occurs when the Moon becomes completely immersed in the penumbral cone of the Earth without touching the umbra.[1]
The penumbral lunar eclipse on March 14, 2006 was a total penumbral eclipse.
The path for the Moon to pass within the penumbra and outside the umbra is very narrow. It can only happen on the Earth's northern or southern penumbral edges. In addition, the size of the penumbra is sometimes too small where the Moon enters it to contain the Moon. The width of the Earth's penumbra is determined by the Sun's angular diameter at the time of the eclipse, and the Moon's angular diameter is larger than the Sun over part of its elliptical orbit, depending on whether the eclipse occurs at the nearest (perigee) or farthest point (apogee) in its orbit around the Earth. The majority of the time, the size of the Moon and the size of the Earth's penumbra where the Moon crosses it mean that most eclipses will not be total penumbral in nature.
Total penumbral eclipses constitute a relatively small fraction of lunar eclipses, and the distribution of these events is uneven, occurring between 0 and 9 times per century. The period of this variation is approximately 600 years and also correlates with the frequency of total umbral eclipses and tetrads.[1]
The maximum number in Fred's 5K canon[N 1] is eight for saros 19.[2] Saros 32 and 132 have seven.[3][4] Saros 58, 95, and 114 have six.[5][6][7]
Saros 114 is the only saros in the canon to have a total of seven total penumbral lunar eclipses that are not all in a row.[7] Likewise, saros 169 has five total penumbral eclipses, but only four of them occur consecutively.[8]
Saros series with multiple consecutive total penumbral eclipsesedit
This table summarizes which saros series contain four or more consecutive total penumbral eclipses.
Summary frequency of total penumbral, total umbral and tetrad events 501–2500edit
The frequency of total penumbral lunar eclipses varies by century with the frequency of total umbral eclipses. A tetrad is a set of four total umbral eclipses within two years.
^ abcdefghTotal penumbral lunar eclipses are indicated by the Nx eclipse type in Fred Espenak's Lunar Eclipse canon.
^Saros 114 has seven total penumbral eclipses, but only six of them occur consecutively.
^Saros 169 has five total penumbral eclipses, but only four of them occur consecutively.
Referencesedit
^ abMeeus, Jean (1980). "Total Penumbral lunar eclipses, Jean Meeus, 1980" (PDF). Journal of the Royal Astronomical Society of Canada. 74: 291. Bibcode:1980JRASC..74..291M.
^ ab"NASA - Catalog of Lunar Eclipses in Saros 19". eclipse.gsfc.nasa.gov.
^ ab"NASA - Catalog of Lunar Eclipses in Saros 32". eclipse.gsfc.nasa.gov.
^ ab"NASA - Catalog of Lunar Eclipses in Saros 132". eclipse.gsfc.nasa.gov.
^ ab"NASA - Catalog of Lunar Eclipses in Saros 58". eclipse.gsfc.nasa.gov.
^ ab"NASA - Catalog of Lunar Eclipses in Saros 95". eclipse.gsfc.nasa.gov.
^ abc"NASA - Catalog of Lunar Eclipses in Saros 114". eclipse.gsfc.nasa.gov.
^ ab"NASA - Catalog of Lunar Eclipses in Saros 169". eclipse.gsfc.nasa.gov.
^ abcdefghijklmnopJohn Irwin (2017). . Archived from the original (PNG) on 2017-02-25. Retrieved 2018-09-08. The dot color indicates the sign (positive/negative) of the eclipse gamma.
January 01, 1970
total, penumbral, lunar, eclipse, total, penumbral, lunar, eclipse, lunar, eclipse, that, occurs, when, moon, becomes, completely, immersed, penumbral, cone, earth, without, touching, umbra, penumbral, lunar, eclipse, march, 2006, total, penumbral, eclipse, pa. A total penumbral lunar eclipse is a lunar eclipse that occurs when the Moon becomes completely immersed in the penumbral cone of the Earth without touching the umbra 1 The penumbral lunar eclipse on March 14 2006 was a total penumbral eclipse The path for the Moon to pass within the penumbra and outside the umbra is very narrow It can only happen on the Earth s northern or southern penumbral edges In addition the size of the penumbra is sometimes too small where the Moon enters it to contain the Moon The width of the Earth s penumbra is determined by the Sun s angular diameter at the time of the eclipse and the Moon s angular diameter is larger than the Sun over part of its elliptical orbit depending on whether the eclipse occurs at the nearest perigee or farthest point apogee in its orbit around the Earth The majority of the time the size of the Moon and the size of the Earth s penumbra where the Moon crosses it mean that most eclipses will not be total penumbral in nature Contents 1 Frequency 1 1 Saros series with multiple consecutive total penumbral eclipses 2 Summary frequency of total penumbral total umbral and tetrad events 501 2500 3 List of total penumbral lunar eclipse events 1901 2200 4 See also 5 Notes 6 ReferencesFrequency editTotal penumbral eclipses constitute a relatively small fraction of lunar eclipses and the distribution of these events is uneven occurring between 0 and 9 times per century The period of this variation is approximately 600 years and also correlates with the frequency of total umbral eclipses and tetrads 1 The maximum number in Fred s 5K canon N 1 is eight for saros 19 2 Saros 32 and 132 have seven 3 4 Saros 58 95 and 114 have six 5 6 7 Saros 114 is the only saros in the canon to have a total of seven total penumbral lunar eclipses that are not all in a row 7 Likewise saros 169 has five total penumbral eclipses but only four of them occur consecutively 8 Saros series with multiple consecutive total penumbral eclipses edit This table summarizes which saros series contain four or more consecutive total penumbral eclipses Sarosseries Consecutive totalpenumbral eclipses 339 7 9 266 13 9 258 9 9 247 10 9 237 10 9 226 10 9 218 12 9 157 6 9 118 4 9 116 7 9 105 11 9 39 9 9 37 6 9 26 9 9 19 N 1 8 2 32 N 1 7 3 58 N 1 6 5 95 N 1 6 6 114 N 1 N 2 6 7 132 N 1 7 4 169 N 1 N 3 4 8 187 5 9 255 4 9 Summary frequency of total penumbral total umbral and tetrad events 501 2500 edit nbsp The frequency of total penumbral lunar eclipses varies by century with the frequency of total umbral eclipses A tetrad is a set of four total umbral eclipses within two years Century Totalpenumbral Totalumbral Tetrads 501 600 1 63 0 601 700 2 58 0 701 800 2 69 3 801 900 5 88 8 901 1000 3 78 6 1001 1100 3 62 0 1101 1200 0 60 0 1201 1300 1 60 0 1301 1400 8 77 6 1401 1500 4 83 4 1501 1600 2 76 6 1601 1700 2 61 0 1701 1800 0 60 0 1801 1900 2 62 0 1901 2000 9 81 5 2001 2100 5 84 7 2101 2200 5 69 4 2201 2300 1 61 0 2301 2400 0 60 0 2401 2500 6 69 4List of total penumbral lunar eclipse events 1901 2200 editAscending nodes Descending nodes Saros Date Viewing Chart Saros Date Viewing Chart 110 1901 May 03 nbsp nbsp 114 1908 Dec 07 nbsp nbsp 114 1926 Dec 19 nbsp nbsp 114 1944 Dec 29 nbsp nbsp 116 1948 Oct 18 nbsp nbsp 114 1963 Jan 09 nbsp nbsp 114 1981 Jan 20 nbsp nbsp 113 1988 Mar 03 nbsp nbsp 114 1999 Jan 31 nbsp nbsp 113 2006 Mar 14 nbsp nbsp 119 2053 Aug 29 nbsp 142 2070 Apr 25 nbsp nbsp 120 2082 Aug 08 nbsp nbsp 148 2099 Sep 29 nbsp nbsp 145 2103 Jan 23 145 2121 Feb 02 145 2139 Feb 13See also editLists of lunar eclipses List of 21st century lunar eclipses Moon illusion Orbit of the Moon Solar eclipse Portals nbsp Astronomy nbsp Solar SystemNotes edit a b c d e f g h Total penumbral lunar eclipses are indicated by the Nx eclipse type in Fred Espenak s Lunar Eclipse canon Saros 114 has seven total penumbral eclipses but only six of them occur consecutively Saros 169 has five total penumbral eclipses but only four of them occur consecutively References edit a b Meeus Jean 1980 Total Penumbral lunar eclipses Jean Meeus 1980 PDF Journal of the Royal Astronomical Society of Canada 74 291 Bibcode 1980JRASC 74 291M a b NASA Catalog of Lunar Eclipses in Saros 19 eclipse gsfc nasa gov a b NASA Catalog of Lunar Eclipses in Saros 32 eclipse gsfc nasa gov a b NASA Catalog of Lunar Eclipses in Saros 132 eclipse gsfc nasa gov a b NASA Catalog of Lunar Eclipses in Saros 58 eclipse gsfc nasa gov a b NASA Catalog of Lunar Eclipses in Saros 95 eclipse gsfc nasa gov a b c NASA Catalog of Lunar Eclipses in Saros 114 eclipse gsfc nasa gov a b NASA Catalog of Lunar Eclipses in Saros 169 eclipse gsfc nasa gov a b c d e f g h i j k l m n o p John Irwin 2017 Consecutive penumbral total lunar eclipses Archived from the original PNG on 2017 02 25 Retrieved 2018 09 08 The dot color indicates the sign positive negative of the eclipse gamma Retrieved from https en wikipedia org w index php title Total penumbral lunar eclipse amp oldid 1138345763, wikipedia, wiki, book, books, library,
