June 2002 lunar eclipse
| Penumbral eclipse | |||||||||
| File:Lunar eclipse chart close-2002Jun24.png Hourly motion shown right to left | |||||||||
| Date | June 24, 2002 | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Gamma | −1.4439 | ||||||||
| Magnitude | −0.791 | ||||||||
| Saros cycle | 149 (2 of 72) | ||||||||
| Penumbral | 129 minutes, 5 seconds | ||||||||
| |||||||||
A penumbral lunar eclipse occurred at the Moon’s descending node of orbit on Monday, June 24, 2002,[1] with an umbral magnitude of −0.791. 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 6.7 days after perigee (on June 19, 2002, at 3:30 UTC), the Moon's apparent diameter was larger.[2]
Visibility
[edit | edit source]The eclipse was completely visible over Africa, Europe, west and central Asia, and Antarctica, seen rising over much of South America and setting over much of east Asia and Australia.[3]
| File:Lunar eclipse from moon-2002Jun24.png | File:Lunar eclipse chart-02jun24.png The moon's hourly motion across the Earth's shadow in the constellation of Scorpius. |
Eclipse details
[edit | edit source]Shown below is a table displaying details about this particular lunar eclipse. It describes various parameters pertaining to this eclipse.[4]
| Parameter | Value |
|---|---|
| Penumbral Magnitude | 0.21095 |
| Umbral Magnitude | −0.79099 |
| Gamma | −1.44399 |
| Sun Right Ascension | 06h13m52.0s |
| Sun Declination | +23°24'03.8" |
| Sun Semi-Diameter | 15'44.2" |
| Sun Equatorial Horizontal Parallax | 08.7" |
| Moon Right Ascension | 18h13m25.9s |
| Moon Declination | -24°47'04.8" |
| Moon Semi-Diameter | 15'42.3" |
| Moon Equatorial Horizontal Parallax | 0°57'38.4" |
| ΔT | 64.3 s |
Eclipse season
[edit | edit source]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.
| May 26 Descending node (full moon) |
June 10 Ascending node (new moon) |
June 24 Descending node (full moon) |
|---|---|---|
| File:Lunar eclipse chart close-2002May26.png | File:SE2002Jun10A.png | File:Lunar eclipse chart close-2002Jun24.png |
| Penumbral lunar eclipse Lunar Saros 111 |
Annular solar eclipse Solar Saros 137 |
Penumbral lunar eclipse Lunar Saros 149 |
Related eclipses
[edit | edit source]Eclipses in 2002
[edit | edit source]- A penumbral lunar eclipse on May 26.
- An annular solar eclipse on June 10.
- A penumbral lunar eclipse on June 24.
- A penumbral lunar eclipse on November 20.
- A total solar eclipse on December 4.
Metonic
[edit | edit source]- Preceded by: Lunar eclipse of September 6, 1998
Tzolkinex
[edit | edit source]- Followed by: Lunar eclipse of August 6, 2009
Half-Saros
[edit | edit source]- Followed by: Solar eclipse of July 1, 2011
Tritos
[edit | edit source]- Preceded by: Lunar eclipse of July 26, 1991
- Followed by: Lunar eclipse of May 25, 2013
Lunar Saros 149
[edit | edit source]- Preceded by: Lunar eclipse of June 13, 1984
- Followed by: Lunar eclipse of July 5, 2020
Inex
[edit | edit source]- Preceded by: Lunar eclipse of July 15, 1973
- Followed by: Lunar eclipse of June 5, 2031
Triad
[edit | edit source]- Preceded by: Lunar eclipse of August 24, 1915
Lunar eclipses of 1998–2002
[edit | edit source]This eclipse is a member of a semester series. An eclipse in a semester series of lunar eclipses repeats approximately every 177 days and 4 hours (a semester) at alternating nodes of the Moon's orbit.[5]
The penumbral lunar eclipses on March 13, 1998 and September 6, 1998 occur in the previous lunar year eclipse set, and the penumbral lunar eclipses on May 26, 2002 and November 20, 2002 occur in the next lunar year eclipse set.
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Saros 149
[edit | edit source]This eclipse is a part of Saros series 149, repeating every 18 years, 11 days, and containing 71 events. The series started with a penumbral lunar eclipse on June 13, 1984. It contains partial eclipses from August 29, 2110 through April 5, 2471; total eclipses from April 16, 2489 through September 17, 2741; and a second set of partial eclipses from September 28, 2759 through May 5, 3120. The series ends at member 71 as a penumbral eclipse on July 20, 3246.
The longest duration of totality will be produced by member 36 at 99 minutes, 18 seconds on July 3, 2615. All eclipses in this series occur at the Moon’s descending node of orbit.[6]
| Greatest | First | |||
|---|---|---|---|---|
| The greatest eclipse of the series will occur on 2615 Jul 03, lasting 99 minutes, 18 seconds.[7] | Penumbral | Partial | Total | Central |
| 1984 Jun 13 File:Lunar eclipse chart close-1984Jun13.png |
2110 Aug 29 |
2489 Apr 16 |
2561 May 30 | |
| Last | ||||
| Central | Total | Partial | Penumbral | |
| 2687 Aug 15 |
2741 Sep 17 |
3120 May 05 |
3246 Jul 20 | |
Eclipses are tabulated in three columns; every third eclipse in the same column is one exeligmos apart, so they all cast shadows over approximately the same parts of the Earth.
Tritos series
[edit | edit source]This eclipse is a part of a tritos cycle, repeating at alternating nodes every 135 synodic months (≈ 3986.63 days, or 11 years minus 1 month). Their appearance and longitude are irregular due to a lack of synchronization with the anomalistic month (period of perigee), but groupings of 3 tritos cycles (≈ 33 years minus 3 months) come close (≈ 434.044 anomalistic months), so eclipses are similar in these groupings.
Inex series
[edit | edit source]This eclipse is a part of the long period inex cycle, repeating at alternating nodes, every 358 synodic months (≈ 10,571.95 days, or 29 years minus 20 days). Their appearance and longitude are irregular due to a lack of synchronization with the anomalistic month (period of perigee). However, groupings of 3 inex cycles (≈ 87 years minus 2 months) comes close (≈ 1,151.02 anomalistic months), so eclipses are similar in these groupings.
| Series members between 1801 and 2031 | |||||
|---|---|---|---|---|---|
| 1828 Oct 23 (Saros 143) |
1857 Oct 03 (Saros 144) |
1886 Sep 13 (Saros 145) | |||
| 1915 Aug 24 (Saros 146) |
1944 Aug 04 (Saros 147) |
1973 Jul 15 (Saros 148) | |||
| File:Lunar eclipse chart close-1915Aug24.png | File:Lunar eclipse from moon-1915Aug24.png | File:Lunar eclipse chart close-1944Aug04.png | File:Lunar eclipse from moon-1944Aug04.png | File:Lunar eclipse chart close-1973Jul15.png | File:Lunar eclipse from moon-1973Jul15.png |
| 2002 Jun 24 (Saros 149) |
2031 Jun 05 (Saros 150) | ||||
| File:Lunar eclipse chart close-2002Jun24.png | File:Lunar eclipse from moon-2002Jun24.png | File:Lunar eclipse chart close-2031Jun05.png | File:Lunar eclipse from moon-2031Jun05.png | ||
Half-Saros cycle
[edit | edit source]A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).[8] This lunar eclipse is related to one partial solar eclipse of Solar Saros 156.
| July 1, 2011 |
|---|
| File:SE2011Jul01P.png |
See also
[edit | edit source]References
[edit | edit source]- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Listing of Eclipses of series 149
- ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros
External links
[edit | edit source]- Saros cycle 149
- 2002 Jun 24 chart: Eclipse Predictions by Fred Espenak, NASA/GSFC
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