A penumbral eclipse of the Moon occurred on Thursday 9 August, 1691 UT (30 Jul, 1691 Old Style), with maximum eclipse at 01:52 UT. This very subtle penumbral eclipse was essentially invisible to the naked eye; though it lasted 3 hours and 41 minutes, just 55% of the Moon's disc was in partial shadow (with no part of it in complete shadow).
The penumbral eclipse lasted for 3 hours and 41 minutes.
Maximum eclipse was at 01:52:10 UT.
Interactive Map
This map shows the visibility of the eclipse at maximum eclipse,
when it was visible within the bright area on the map. Note that
the map is approximate, and if you
were near the edge of the area of visibility, the moon was very close
to the horizon and may not have been practically visible.
You can use the zoom controls to zoom in and out, and pan to
see areas of interest. The green marker in the centre shows where
the Moon will be directly overhead at maximum eclipse.
The interactive map is currently not available.
Overview Map
This map sourced from NASA Goddard Space flight Center: GSFC Eclipse Web SiteGSFC Eclipse Web Site
The primary source of all the information on eclipses presented here at Hermit Eclipse. (NASA Goddard Space flight Center)
shows the visibility of the eclipse. (Click on it for the
full-sized version.)
Eclipse Season and Saros Series
This eclipse season contains 2 eclipses:
This was the 68th eclipse in lunar Saros series 104.The surrounding eclipses in this Saros series are:
This Saros series, lunar Saros series 104,
is linked to solar Saros series 111. The
nearest partner eclipses in that series are:
Eclipse Parameters
| UT Date/time (max) | 01:52:10 on 9 Aug UT |
TDT Date/time (max) | 01:52:19 on 9 Aug TDT |
| Saros Series | 104 |
Number in Series | 68 |
| Penumbral Magnitiude | 0.5526 |
Central Magnitiude | -0.521 |
| Gamma | -1.2766 |
Path Width (km) | |
| Delta T | 0m09s |
Error | ± 0m39s (95%) |
| Penumbral Duration | 3h41m |
Partial Duration | |
| Total Duration | |
| |
| Partial Rating | |
Total Rating | |
Note that while all dates and times on this site (except
where noted) are in UT, which is within a second of civil time,
the dates and times shown in NASA's eclipse listingsGSFC Eclipse Web Site
The primary source of all the information on eclipses presented here at Hermit Eclipse. (NASA Goddard Space flight Center)
are in the TDT timescale.
Data last updated: 2015-06-21 22:11:46 UTC.
