Meteor showers visible in late July
FILE PHOTO
MANILA, Philippines—The last days of July will provide early risers a “nice display of meteors on moonless mornings,” according to the astronomical division of the state weather bureau.
From July 28 to 31, the Southern Delta Aquarids meteor shower will be best observed from the Philippines, with the spectacle expected to peak from just before midnight onward on July 30, the Philippine Atmospheric, Geophysical and Astronomical Services Administration (Pagasa) said.
In its monthly astronomical diary, Pagasa said stargazers would, under favorable conditions, be able to see five to 10 meteors an hour.
“The stream normally produces about 5-10 meteors/hour with overall activity of about 15 meteors/hour under good sky conditions,” according to the astronomical diary issued by Pagasa officer-in-charge Vicente Malano.
The Southern Delta Aquarids are part of a complex of radiants – or the points in the universe where the meteors come from – in the constellations Aquarius, Capricornus and Piscis Austrinus.
“All of [these] combine with sporadic and early Perseid activity to provide a nice display of meteors on moonless mornings in late July,” Pagasa said.
In an online article, the US National Aeronautics and Space Administration said the Delta Aquarids are best viewed in the southern hemisphere and the southern latitudes of the northern hemisphere.
NASA also provided tips on the best way to view the meteor shower:
“Find an area well away from city or street lights. Come prepared with a sleeping bag, blanket or lawn chair. Lie flat on your back and look up, taking in as much of the sky as possible,” it said.
“Your greatest chance for seeing meteors is to be looking about halfway between the horizon and the zenith, and if you know the constellation, 45 degrees from it,” NASA said.
“In less than 30 minutes in the dark, your eyes will adapt and you will begin to see meteors. Be patient – the show will last until dawn, so you have plenty of time to catch a glimpse,” it added.
Meteors or “shooting stars” are the visible streaks of light coming from leftover particles of comets or asteroids as they burn up on entering the earth’s atmosphere.
“When comets come around the sun, the dust they emit gradually spreads into a dusty trail around their orbits. Every year the Earth passes through these debris trails, which allows the bits to enter our atmosphere where they disintegrate to create fiery and colorful streaks in the sky,” NASA said.
Besides the meteor shower, Pagasa said, another visual treat is available to stargazers throughout July.
“Stargazers will be having a nice time watching the night sky with the famous Summer Triangle of the stars Vega, Deneb and Altair of the constellations Lyra, Aquila and Cygnus, respectively, being well placed in the eastern horizon before midnight,” it said.
