In Manx skies... August 2018 ~ compiled by Dave Storey |
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New First Quarter Full Last Quarter |
Note: All
times are Universal Time (UT) |
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Solar activity is low with solar cycle 24 now in force. WARNING: NEVER DIRECTLY OBSERVE THE SUN WITH YOUR NAKED EYES AND/OR OPTICAL INSTRUMENTATION: YOU WILL BE BLINDED! Carrington's Solar Rotation number 2207 starts on the 6th at 01h43m45s. |
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As the moons orbit Jupiter, there are occasions when the shadow of the moons can be seen upon the surface of Jupiter and the moons can transit across Jupiter's disc. Also, the moons can be seen to be occulted or eclipsed by Jupiter. There are many events throughout the month. See periodicals such as the BAA Handbook, Astronomy Now and Sky at Night magazines for listings. To help you identify the moons at any particular time, Sky and Telescope have a Java tool that will plot the moon positions. Click Here. |
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The ringed planet will be found low in the south to south western skies during the month in Sagittarius. It shines at magnitude +0.2 to +0.4. The moon Titan (magnitude +8.6) will be found west of the planet on 1st ,2nd ,3rd ,16th , 17th and 18th . It will be east of the planet 8th ,9th ,10th ,11th ,24th ,25th ,26th and 27th . |
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alpha-Cygnids became active during July and continue into August. There is the second peak of activity on the 21st when 5 meteors per hour (ZHR) will be seen. Radiant is at RA. 21.00h Dec. +48° Capricornids were active during July and continue in August. There were three peaks of activity in July and August will consist of the tail end of this weak shower. These meteors can display yellow-blue colours. Radiant is at RA. 20.44h Dec. -15° delta-Aquarids continue from July until 20th August. A second peak of activity occurs 6th August. The peak will be 10 meteors per hour (ZHR) and situated at radiant RA. 23.04h Dec. +02°. These meteors are usually faint. Alpha-Capricornids were active from July and continue to 20th August. Peak activity is low, occurring on the nights 2nd - 3rd . With only 5 meteors per hour (ZHR), it is still worth a watch as this shower produces some long, slow moving fireballs. Radiant is at RA. 20.36h Dec. -10° iota-Aquarids continue to be active from July and into August with a peak due 6th August. This is another weak shower with only 8 meteors per hour (ZHR) at peak. Radiant is at RA. 22.10h Dec. -15° Perseids are active this month with a peak occurring on the 13th at 01.00h. Peak rate is 80+ meteors per hour (ZHR). The moon will be just past New Moon so the sky will be moonless for the shower this year, making observing very good. Radiant is at RA 03h13m Dec. +58° |
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Date Time ZC# SAO# Magnitude. P.A. Type of event. Notes
For
very detailed list of occultations visible this month, click
here. (Data from Occult Software) ZC
= Zodiacal Catalogue. Type of Event DD = disappearance at dark
limb, RD = Reappearance at dark limb. RB = Reappearance on bright
limb. PA = Position Angle around limb of the Moon, where 0 degrees
is north, 90 degrees is east, 180 degrees is south and 270 degrees
is west. The above predictions were calculated from Occult software by David Herald. More information regarding this software may be found at the lunar-occultations.com web site. |
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This star drops from magnitude +2.1 to +3.4 in about 5 hours. Suitable events visible from the Isle of Man this month occur on 18th at 01.00h. Click here for a star chart for Algol. |
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Comets |
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The international Space Station crosses the Manx skies on a regular basis. For the latest information on when the ISS is due to pass across the sky over the next ten days, visit the link below. |
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Bibliography for Manx Night Skies The
Handbook of the British Astronomical Association 2018. BAA.
2017 Planetary data derived from
Guide 9
Software. |