Wandering through the realms of the cosmos, pondering its huge vastness

Posts tagged “Venus predawn sky

Planets Align for This Year’s Lyrids!

Tonight presents the expected peak of the annual Lyrid meteor shower, from late night Friday (April 22) until dawn Saturday (April 23). Look for meteors radiating from the constellation of Lyra after midnight.

Sky at 5:00 AM, April 23 (21:00 UT April 22) as viewed from Manila, Philippines. The point where the yellow lines converge shows the "radiant" for the Lyrid meteor shower. The radiant is the spot in the sky that the meteors seem to fan out from. | image: Stellarium

Lyrid meteors are usually around magnitude +2, which is bright enough to be visible from most cities, but you’ll see more and enjoy them more if you leave the city for a dark place where the stars shine brighter. They often produce luminous trains of dust that can be observed for several seconds. Some Lyrids will be brighter, though, and the occassional “fireball” can cast shadows for a split second and leave behind glowing, smoky debris trails that last for minutes. Lyrid meteors disintegrate after hitting our atmosphere at a moderate speed of 29.8 miles per second.

In observing these meteors, the hour before dawn is usually best, except that a bright waning gibbous moon will be lighting the sky hiding most of the fainter meteors in its glare. This year, it is more favorable to watch late at night, during the dark hour before moonrise.

Tweet your data!

You can also share your data by Tweeting your postcode, your country (click here to find your country code) and, optionally, the meteor count along with the hashtag; #MeteorWatch (you are welcome to use GAM hastags as well – #GAM2011 #LyridsWatch)

The meteor data will appear in a map at MeteorWatch.org


While the best meteor-watching will be late night through daybreak, it’s well worth staying outside just before sunrise for a beautiful planetary alignment will be joining the Lyrids.

Venus is so bright in the eastern sky you can’t miss it, and below it Mercury, Mars and Jupiter could be found hanging a few degrees away from each other. If you have hazy skies or live in an urban area, you may need binoculars to see Mars and Jupiter.

All four heavenly objects will fit within a circle about 15 degrees in diameter, beaming together through the colors of the predawn sky. 

This planetary grouping is visible from April 23 to May 30.

Enjoy the show! 🙂

Advertisements

Leonids Observation and Catching Venus in the Predawn Sky

Due to a busy schedule, I was not able to observe the peak of the Leonid Meteor Shower last Nov. 17 to 18. According to Philippine Atmospheric Geophysical and Astronomical Services Administration (PAGASA), the best time to look for these fast moving meteors would be  around two to three hours before dawn when the waxing gibbous Moon has already set and the constellation Leo is  high in the Eastern sky.

I planned on observing the following night. However, I realized that aside from missing the peak of the meteor shower, I would probably have less chances to see the Leonids because the light from the nearly full Moon will wash out the fainter meteors. The angular difference of the plane of revolution of Earth around the Sun and that of the Moon around the Earth causes the Moon to rise and set about 50 minutes later each successive night, so I would have an even smaller chance of seeing a meteor every night I wait after the peak.

Nevertheless, because of my eagerness and keen determination to see even a single Leonid, I tried my luck during the night of Nov. 19-20. 🙂

Together with some friends and fellow orgmates, we drove home to Marikina City at around 2am. While on the way, I noticed the Moon shining brightly in the west. Jupiter was nowhere to be found as it has set earlier along with Uranus.

After arriving at my friend’s house, I immediately told her of my plan and we prepared to set up at the topmost part of the house. It was cold and a bit foggy outside during that time. We took a sleeping bag with us so we could lie down on the floor of the roof deck as we watch for meteors. Unfortunately, the floor was already wet – probably because of the dew – when we climbed upstairs. So instead, we spread out the sleeping bag across the roof just below the topmost deck and began our quest for that night. Below us, all the little houses and buildings stood silent as the little spots of light coming from the street lamps appeared to twinkle just like the stars above us.

We found the very conspicuous Leo, the constellation where the meteors seem to radiate from, lying high in the northeastern sky. As we started out to look for zooming meteors from other parts of the sky, we were stunned by the total beauty of the night sky surrounding us. Luna was already low and obstructed by a building to the west, which allowed the stars of the bright constellations to shine brightly against the dark sky. In the west, the Winter Triangle – which is composed of red Betelgeuse of the mighty Orion, Procyon of Canis Minor and Sirius of Canis Major – stood out together with Castor and Pollux of Gemini, Aldebaran of Taurus, Capella of Auriga, Mirphak of Perseus and Arneb of Lepus. Of course, the heavenly sisters, Pleiades and Hyades, could be easily noticed as well. In the south, bright Canopus greeted us with the other stars of the former Argo Navis. Looking northwards, I  was surprised to see the famous seven stars comprising the Big Dipper in Ursa Major again. It has been a long time since this asterism, which serves as a guide in finding the North Star, became visible once again. The eastern horizon was practically covered with dark, low-lying clouds so it remained blank for a few hours.

After several minutes of searching the sky, I saw my very first Leonid – a swift yellow meteor with a long trail. 😀 As I traced back its path, it appeared to have come from the sickle of Leo which confirmed that it was indeed a Leonid! After that I saw 7 more meteors, 3 of which were big yellowish-orange with long trails. We were so astounded by their beauty that we screamed with delight every time we saw one. The best one I saw was very bright with a long, lingering, smoky tail behind it which lasted for about 5 seconds.

Meanwhile, we also saw several artificial satellites moving across the northwestern sky from 4am-5am.

At about 5:15 am, we decided to end our meteor counting and go inside because it’s getting too cold and our sleeping bag was already wet due to the morning dew. But before we went downstairs, we noticed this very bright apparition in the eastern sky. At first, we thought it was an airplane because of its intense luminosity. However, we noticed that it wasn’t moving at all. I thought that maybe it was another celestial object. Was it a big meteor that was about to hit Earth or a UFO? Or, was it a star that had just risen? I know that there’s only one celestial object that could shine that bright then – the planet Venus. After undergoing inferior conjunction with the Sun, Venus was now back to being a morning star. However, I wondered why we didn’t see it rising. I suddenly recalled that maybe it was covered by the thick clouds in the east that we saw a while ago as it rose up in the horizon.

Upon checking Stellarium, I realized that Venus was also perfectly placed near Saturn and the star Spica of Virgo then. My friend, Bea, had her Canon 400D DSLR camera with her that time so we decided to capture this remarkable view at that moment.

Venus, Spica, Saturn and Arcturus at 5:24 am PST – Click on image to enlarge.
Venus and Spica close up

Though I caught a cold, got no sleep, and had itchy mosquito bites all over my arms and feet during this observation (such is the life of an amateur astronomer, ha ha), seeing all those beautiful sights of the heavens would always be more than enough for me to go to great heights for astronomy and continue on this passion of exploring the cosmos and sharing it to everyone . 🙂

“For astronomy is not only pleasant, but also very useful to be known: it cannot be denied that this art unfolds the admirable wisdom of God.” – John Calvin