During the early morning hours of August 12, Philippine sky observers had a great chance of witnessing a relatively rare occultation of Jupiter (and some of its largest satellites) by our Moon. In astronomy, an occultation is an event that occurs when an apparently larger body passes in front of an apparently smaller one. In this case, the moon passed in front of the planet Jupiter; the pair being visible in the morning sky in the Philippines about 5 hours and 53 minutes before the Sun. At the moment of closest approach, the Moon was at mag -11.3, and Jupiter at mag -2.2, both in the constellation Taurus.
Despite the presence of hazy skies and thin clouds, we were lucky to have been able to observed the occultation event. Once I located the moon with my naked eye, I immediately pointed my superzoom camera to it and took an image. I found Jupiter close to the moon but it was covered with haze. A few minutes later, Jupiter slipped behind the bright lunar limb and was visible no longer. Half an hour later, I tried to capture a video of the reappearance of Jupiter, but the clouds had thickened to the point where I could no longer find the moon. When the clouds had finally gone out of sight, Jupiter was already emerging from behind the dark limb.
Still, considering the less-than-ideal conditions, it was quite a successful observation. 🙂
Sky condition: 70-80% cloudy
Camera used: Canon Powershot SX40 HS
I observed this event from Marikina City.
This month, weather conditions permitting, skywatchers will be treated to the Perseid meteor shower, several planet conjunctions, a “blue moon” and a relatively rare lunar occultation of Jupiter (visible for some parts of the globe).
August 7-14: Spica, Saturn and Mars at Dusk
The planets Saturn and Mars and the star Spica are close together in the first half of the month, low above the western horizon at dusk. They will form a triangle on the 7th an hour after sunset. Saturn will be the top of the triangle, while Mars will be on the lower right corner. Each side of the triangle is about 5 degrees. On the 14th, they will form an almost straight line: Saturn topmost with Mars lying between Saturn and Spica.
August 12: Occultation of Jupiter by the Moon
For Philippine observers, the waning crescent Moon will pass in front of Jupiter and its moons during a relatively rare event called occultation on the morning of August 12. In astronomy, an occultation occurs when one object is hidden by another larger object that passes between it and the observer. Prospects and timings for the event vary with location.
The event takes place while Jupiter and the Moon are low in the sky during the wee hours of the morning.
|2012 Aug 12 02:43||Occultation disappearance of Jupiter (Mag -2.2)|
|2012 Aug 12 03:16||Occultation reappearance of Io (Mag 5.5)|
|2012 Aug 12 03:17||Occultation reappearance of Jupiter (Mag -2.2)|
|2012 Aug 12 03:18||Occultation reappearance of Europa (Mag 5.7)|
|2012 Aug 12 03:20||Occultation reappearance of Callisto (Mag 6.1)|
|2012 Aug 12 03:32||Occultation reappearance of Ganymede (Mag 5.0)|
August 11, 12: Perseid Meteor Shower
The Perseids is one of the best annual meteor showers.
The best time to watch for Perseids is between midnight and dawn. This is when the shower’s radiant located between the constellations Cassiopeia and Perseus, lies highest in the northeast sky.
By the 12th, the moon will only be 25% illuminated and not nearly as intense as when near its full phase. This will allow fainter meteors to be seen as long as the moon lies outside your field of view.
Tip: Find a safe dark location with clear skies in the early morning hours in order to see the shower. This year, the shower peaks on a weekend so it’s more convenient to stay up late.
August 14: A line of planets along with a thin, waning, crescent Moon before dawn
Before dawn on the morning of the 14th August the planets Mercury, Venus and Jupiter and the Moon will line up in the eastern sky. Look for A very thin crescent Moon to the upper right of Mercury an hour before sunrise in the northeast. Venus is to the upper right of the Moon, and a few degrees above them is Jupiter.
August 22: Waxing Crescent Moon joins Saturn, Mars and Spica
On the evening of the 22nd, a waxing crescent Moon, Mars, and Saturn will all lie within a circle just 6° in diameter.
August 31: Blue Moon (second full moon of August)
On the 31st, we will be able to witness a Blue Moon, the term given to the second full Moon in a calendar month. But don’t expect it to be blue — the term has nothing to do with the color of the moon. [Origin of the term blue moon]