Archive for the ‘Meteorwatch’ Category
Stunning Quadrantid Meteor

Quadrantid meteor Credit Sarah Loughlin
I would like to share one of my Quadrantid meteor showers photographs with Meteorwatch.org. My name is Sarah Loughlin, I live in Oyster Bay, Ny and I have been stargazing ever since I can remember. I took this image on January, 4th at around 4:30 am with my Canon Rebel T2i & 10-22mm Canon lens in Oyster Bay, Ny. The settings were 15.0 s, f/3.5 at 10.0 mm, iso 1600. This first meteor shower of 2012 was spectacular to watch, despite the frigid temperatures. If you consider using my photograph I would be honored.
Sincerely,
Sarah Loughlin
Quadrantids Meteor Shower 2012
Originally Posted on Dark Sky Diary by Steve Owens @darkskyman on twitter

Quadrantid Meteor
On the night of 03/04 January 2012 the first meteor shower of the year will take place, the Quadrantids. This shower ranks as one of the best performers of the year, assuming your skies aren’t clouded, as they so often are in winter. If the peak of this shower occurs under ideal conditions – i.e. perfectly clear skies, free from light pollution – then you can expect to see in excess of 100 meteors every hour. The peak for this shower is very brief though, so you’ll have to catch just the right conditions at just the right time to see a display this good. This year’s peak is estimated to occur just before dawn on 04 January 2012. Read the rest of this entry »
AstroEvents- Hunting things that “Flash” in the January Sky

Credit: David Dickinsen
2012 is here, and the world shows no sign of ending as the heavens spin on their appointed rounds high overhead. But the diligent observer may be rewarded with several unique an spurious sights, both natural and manmade…
1st up is everyone’s favorite meteor shower named after an obsolete constellation; the Quadrantids peak the morning of January 4th in what is the first large meteor shower of the year. The peak is very swift, only lasting about 12 hours or so and is centered this year on 2:00 AM EST/7:00 AM UTC. This favors the U.S. East Coast in 2012, as the 79% waxing gibbous Moon will set around 2AM local the morning of the 4th for observers in mid-northern latitudes. The radiant of the shower lies at a declination of 52° degrees north at the junction of the modern constellations of Draco, Bootes and Hercules, and thus activity may be visible pre-midnite local, although the setting of the Moon and the rising of the radiant will raise sighting prospects considerably. Expect swift-moving meteors headed outward from the radiant above the handle of the Big Dipper to appear anywhere in the sky. The Quadrantids have been known since the early 1800’s, but there has been much conjecture as to the source parent body. Astronomer Fred Whipple noted in 1963 that the stream bears some resemblance to the Delta Aquarids, and that the orbital path has undergone alterations by the planet Jupiter in the last few thousand years. In 2003, SETI researcher Peter Jenniskens proposed that the source may be then recently discovered asteroid 2003 EH1, which has been tentatively linked to Comet C/1490 Y1, which approached Earth at a distance of 0.52 Astronomical Units on January 12th 1491. Be sure to keep an eye out for Quadrantids on these chilly January mornings, as we commemorate Quadrans Muralis, a constellation that is no longer! Read the rest of this entry »
Quadrantid Meteorwatch 2012

Quadrantid Meteor Credit: nasa.org
2012 has begun and we are in for a welcome treat with the start of this years annual meteor showers and the Quadrantid meteorwatch, on the evening of the 3rd/ morning of the 4th of January.
The Quadrantids can be quite an impressive shower with rates (ZHR) of up to 120 meteors per hour at the showers peak (under perfect conditions) and can sometimes produce rates of up to 200 meteors per hour. The peak is quite narrow lasting only a few hours, however there will be plenty of meteors to look out for either side of the peak. Read the rest of this entry »
Quadrantids Meteor Shower 2012: What You Might See
Originally based on Dark Sky Diary by Steve Owens www.twitter.com/darkskyman
The first meteor shower of 2012 is the Quadrantids, the peak of which falls on the night of the 03/04 January 2012. The Quadrantids shower has one of the highest predicted hourly rates of all meteor showers, comparable to the two great annual showers, the Perseids and the Geminids, occurring in August and December respectively. However unlike the Perseids and Geminids, the Quadrantids peak is very narrow, occurring over just a few short hours.
The predicted Zenith Hourly Rate (see my previous post about ZHR and what it actually means here) for the Quadrantids is around 120. The narrow peak is predicted to occur some time between 2100 UT on 3 January and 0700 UT on 4 January 2011, however the radiant of the shower – the now-defunct constellation Quadrans Muralis – is very low in the evening hours, rising higher towards dawn, and so the best viewing times are later in this run, just before dawn. Read the rest of this entry »
Geminid Meteorwatch 2011
It’s the finale of this year’s meteor showers: The Geminids will start appearing on Dec. 7 and should reach peak activity around the 13th and 14th. This shower could put on a display of up to 100+ meteors (shooting stars) per hour under good viewing conditions.
However, conditions this year are not ideal with the presence of a waning gibbous Moon (which will be up from mid-evening until morning). But seeing meteors every few minutes is quite possible. Geminid meteors are often slow and bright with persistent coloured trails which can linger for a while after the meteor has burned up.
Read the rest of this entry »
The Geminid Meteor Shower Rounds Off 2011

2011 has been quite a year, both terrestrial and otherwise. This week sees the last of the big scheduled astronomical happenings of the year in the form of the Geminid meteor shower.
This shower is one of the yearly standbys along with the Perseids that are always sure to produce. The Geminids have a long peak centered on the morning of December 14th when an idealized Zenithal Hourly Rate (ZHR) of up to 120 meteors per hour may be seen.
Problems will arise, however, from an 82% illuminated waning gibbous Moon in the adjacent constellation of Cancer. Rising roughly around 10PM local on the night of the peak, this makes for the worst possible Moon phase as it’ll be high and bright in the early AM hours, just as the meteor shower is getting into high gear. But as always, I wouldn’t let that stop you from looking! Read the rest of this entry »
Leonids Meteor Shower 2011
Originally posted on Dark Sky Diary By Steve Owens @Darkskyman on twitter
On the night of 17/18 November 2011 the Leonids meteor shower reaches its peak. This annual performer is associated with Comet Temple-Tuttle, which orbits the Sun once every 33 years leaving a trail of debris as it goes. Once a year the Earth passes through this trail, and we see a meteor shower.

Leonids 2001
This year’s Leonids shower is hampered by the last quarter Moon which sits just to the right of the radiant of the Leonids, in Leo. Despite this there is good reason to observe the shower this year, as the International Meteor Organisation suggest there might be as many as three peaks of activity.
Throughout November the rate of Leonids will increase, with the main peak occurring at 0340 GMT on 18 November, at which time the Zenith Hourly Rate may be 20+. For observers in the UK, observing under cloudless skies, away from light pollution, this translates as an hourly rate of ~14, but the Moon will interfere and reduce this value somewhat. Two other peaks may also occur, at ~2100 on November 17, and at ~2300 on 18 November, with similar rates. This means that both the nights of 17/18 and 18/19 November may offer good opportunites to observe this shower.
The Leonids has the distinction of being the most dramatic meteor shower that I’ve ever seen, as I observed the Leonid meteor storms every year from 1998 to 2002, when we saw hundreds of meteors each night at the peak of the shower. These storm peaks are predictable, and occur every 33 years, associated with the pass of comet Temple Tuttle, as it refreshes the trail of debris that cause the meteors. The next pass of Temple Tuttle is due 2031, so we’ve a long wait for the next storm.
Interestingly, the Leonid storm of 1833 was truly stunning, with rates estimated to be around 100,000 per hour across North America.
To view the Leonids, find a dark spot, away from light pollution, sit on a reclining deck chair facing as large an area of the sky as you can manage, wrap yourself in a blanket, and enjoy the view. For observers in the UK the meteor shower radiant will rise around 2200 GMT on 17 November and will be high in the SE by 0400 on 18 November.
If you want to make observations of the Leonids that might help scientists better understand the shower, you can do so via the Society of Popular Astronomy, or the British Astronomical Association. Lots more info can be found at the Meteorwatch website.
Orionids Meteor Shower 2011
Originally posted on Dark Sky Diary by Steve Owens @Darkskyman
Some time in the small hours of Friday or Saturday morning (21-22 October 2011) the Orionids meteor shower will reach its peak activity rate. The peak occurs some time around 21 October each year, but this year it’s uncertain which day it will fall on.

The Orionid's parent Comet P/Halley as taken March 8, 1986 by W. Liller, Easter Island, part of the International Halley Watch (IHW) Large Scale Phenomena Network.
Meteor showers result from the Earth passing through the trail of dust and debris left behind by a comet. In the case of the Orionids the parent object is the most famous of all the comets – Halley’s Comet.
The peak meteor rate for the Orionids is lower than some of the more spectacular showers (the Perseids in August, the Geminids in December, and the Quadrantids in January all regularly outperform the Orionids) but it is still worth looking out for.
The meteors will appear to radiate from the constellation of Orion (hence the name) but they will streak across the sky in all directions, and so you shouldn’t confine yourself to only looking towards this one constellation.
On Thursday and Friday evenings the radiant rises in the east around 2200 BST (2100 UT) and continues to rise to its highest in the south just before the sky starts to brighten at 0600 BST (0500 UT). The higher the radiant above the horizon the more meteors you will see. However a crescent Moon will rises in the east on both mornings, the light from which will drown out some of the fainter meteors.
This shouldn’t matter much to you if you’re observing from an urban or suburban area, as the man-made light pollution in the sky will do a far better job of obscuring the meteor shower than the Moon will, but for lucky observers in dark sites (and I’ll be one of them, as I’m spending the weekend on Sark, the world’s first Dark Sky Island) the Moon may interfere.
Here’s a table with estimated hourly rates based on dark skies / suburban / urban areas, at hourly intervals throughout the night, assuming a ZHR =40 throughout this period (It may be that the peak will fall outwith this period, e.g. in daylight hours, so these are best-case-scenario numbers).
| Time (BST) | Radiant Altitude |
Radiant Direction |
Hourly Rate Urban Site |
Hourly Rate Suburban Site |
Hourly Rate Dark Sky Site (if Moon not present) |
|
| 2200 | rises | ENE | <1 | <1 | <1 | |
| 2300 | 8° | ENE | 1 | 2 | 4 | |
| 0000 | 16° | E | 1 | 4 | 8 | |
| 0100 | 24° | ESE | 2 | 6 | 16 | |
| 0200 | 33° | ESE | 2 | 8 | 22 | |
| 0300 | 40° | SE | 2 | 9 | 26* | |
| 0400 | 46° | SSE | 3 | 10 | 29* | |
| 0500 | 50° | S | 3 | 11 | 31* | |
| 0600 | 50° | S | 3 | 11 | 31* |
* the true rates, given that the Moon is causing natural light pollution, are probably half these values.
All of these timings and altitudes are based on an observer in central Scotland. For other UK observers the values in columns 2-4 may be slightly off, but not noticeably so.
Observing Advice: wrap up warm, head out before midnight, sit youself in a reclining lawn chair, and enjoy the spectacle. The rates may pick up around 0200 BST on Thursday or Friday and may stay high until dawn.
DRACONID METEOR UPDATE
Originally posted on and full credit to spaceweather.com
According to worldwide observers reporting to the International Meteor Organization, there was indeed an outburst of Draconid meteors on October 8th. Preliminary counts suggest a peak rate of 660 meteors per hour at 2010 UT (4:10 pm EDT).
Most Draconids in the outburst were faint, but not all. Göran Fredriksson photographed this fireball splitting the evening twilight over Örnsköldsvik, Sweden:
The meteor rate and overall faintness of the display was in good accord with predictions by leading forecasters such as Jeremie Vaubaillon of the Institute for Celestial Mechanics in France and analysts at NASA’s Meteoroid Environment Office.
more images: from Jesper Grønne of Silkeborg Denmark; from Runar Sandnes of Reed, Norway; from Frank Martin Ingilæ of Tana, Finnmark, Norway; from Ronny Tertnes of Bergem, Norway; from Richard Klofac of Czech Republic, Zlechov; from Thomas Hagen of Oslo, Norway; from Adrian West of West Berkshire United Kingdom; from Pete Glastonbury of Devizes, Wiltshire, UK; from Jaromír N?mec of Davle, Czech Republic



