Quick… what's the only major meteor shower named after a defunct constellation? If you said the January Quadrantids, you'd be correct, as this often elusive but abrupt meteor shower is set to peak this coming weekend early in

2015

.

And we do mean

early

, as in the night of January 3

rd

going into the morning of January 4

th

. This is a bonus, as early January means long dark nights for northern hemisphere observers.

But the

2015 Quadrantids

also has two strikes going against them however: first, the

Moon reaches Full

just a day later on January 5

th

, and second, January also means higher than average prospects for cloud cover (and of course, frigid temps!) for North American observers.

[caption id="attachment_117695" align="alignnone" width="580"]

The rising radiant of the Quads on the morning of January 4th at 3AM local. Note that the Moon and Jupiter are on the scene as well. Created using

Starry Night Education

software.[/caption]

Don't despair, however. In meteor shower observing as in hockey, you miss 100% of the shots that you don't take.

Sorry for the sports analogy. The radiant for the Quadrantids is located in the modern day constellation of Draco near the Hercules-Boötes border at a right ascension 15 hours, 18 minutes and declination +49.5 degrees north. This puts it very near the +3.3 magnitude star I

ota Draconis (Edasich)

.

[caption id="attachment_117691" align="alignnone" width="883"]

The orientation of the Earth's shadow at the predicted peak of the Quads on January 4th, 2:00 UT.

Credit

Orbitron.[/caption]

In 2015, bets are on for the Quadrantids to peak centered on 2:00 UT January 4

th

(9:00 PM EST on the 3rd), favoring northern Europe pre-dawn. The duration for the Quadrantids is short lived, with an elevated rate approaching 100 per hour lasting only six hours in duration. Keep in mind, of course, that it'll be worth starting your vigil on Saturday morning January 3

rd

in the event that the "Quads" kick off early! I definitely wouldn't pass up on an early clear morning on the 3

rd

, just in case skies are overcast on the morning of the 4

th

…

Due to their high northern radiant, the Quadrantids are best from high northern latitudes and virtually invisible down south of the equator. Keep in mind that several other meteor showers are active in early January, and you may just spy a lingering late season Geminid or Ursid 'photobomber' as well among the background sporadics.

[caption id="attachment_117694" align="alignnone" width="580"]

Avast: ye ole Mural Quadrant spied at the

Columbia River Maritime Museum

in Astoria, Oregon. Photo by author.[/caption]

Moonset on the morning of the 4

th

occurs around 6 AM local, giving observers a slim one hour moonless window as dawn approaches. Blocking the Moon out behind a building or hill when selecting your observing site will aid you in your Quadrantid quest.

[caption id="attachment_117692" align="alignnone" width="921"]

The approximate realm of the "Mural Quadrant" overlaid on modern day constellations.

Credit

Stellarium.[/caption]

Antonio Brucalassi made the first historical reference to the Quadrantids, noting that "the atmosphere was traversed by… falling stars" on the morning of January 2

nd

, 1825. It's interesting to note that the modern day peak for the Quads has now drifted a few days to the fourth, due mostly to the leap year-induced vagaries of our Gregorian calendar. The early January meteor shower was noted throughout the 19

th

century, and managed to grab its name from the trendy 19

th

century constellation of

Quadrans Muralis

, or the Mural Quadrant. Hey, we're lucky that

other also-rans

, such as

Lumbricus

the 'Earthworm' and

Officina Typograhica

the 'Printing Office' fell to the wayside when the International Astronomical Union formalized the modern 88 constellations in 1922. Today, we know that the Quadrantids come from 2003 EH

1

, which is thought to be an extinct comet now trapped in the inner solar system on a high inclination, 5.5 year orbit. Could 2003 EH

1

be related to the Great Comet of 1490, as some suggest? The enigmatic object reached perihelion in March of 2014, another plus in the positive column for the 2015 Quads.

[caption id="attachment_117693" align="alignleft" width="300"]

What the heck is a Mural Quadrant? Like everything he did, Tycho Brahe super-sized his quadrant, depicted here.

Credit

Wikimedia Commons.[/caption]

Previous years for the Quadrantids have yielded the following Zenithal Hourly Rate (ZHR) maximums as per the

International Meteor Organization:

2011= 90

2012= 83

2013= 137

2014= +200

The Quadrantid meteor stream has certainly undergone alterations over the years as a result of encounters with the planet Jupiter, and researchers have suggested that the shower may go the way of the 19

th

century Andromedids and become extinct entirely in the centuries to come.

Don't let cold weather deter you, though be sure to bundle up, pour a hot toddy (or tea or coffee, as alcohol impacts the night vision) and keep a spare set of batteries in a warm pocket for that DSLR camera, as cold temps can kill battery packs quicker than you can say

Custos Messium, the Harvest Keeper

.

And though it may be teeth-chatteringly cold where you live this weekend, we actually reach our

closest

point to the Sun this Sunday, as Earth reaches perihelion on January 4th at around 8:00 UT, just 5 hours after the Quads are expected to peak. We're just over 147 million kilometres from the Sun at perihelion, a 5 million kilometre difference from aphelion in July. Be thankful we live on a planet with a relatively circular orbit. Only

Venus

and Neptune beat us out in the true roundness department!

…and no, you

CAN'T defy gravity

around perihelion, despite the current ill conceived rumor going 'round ye ole net…

And as a consolation prize to southern hemisphere observers, the International Space Station reaches a period of full illumination and makes multiple visible passes starting December 30

th

until January 3

rd

. This happens near every solstice, with the December season favoring the southern hemisphere, and June favoring the northern.

[caption id="attachment_117696" align="alignnone" width="580"]

A 2003 south bound Quad nabbed from Cabo Rojo, Puerto Rico (Yes, that's the Southern Cross!)

Credit

and Copyright: Frankie Lucena.[/caption]

So don't let the relatively bad prospects for the 2015 Quadrantids deter you: be vigilant, report those meteor counts to the

IMO

, send those meteor pics in to

Universe Today

and tweet those Quads to

Meteorwatch

. Let's "party like it's 1899," and get the namesake of an archaic and antiquated constellation trending!