Video | Business Headlines | Internet | Science | Scientific Ethics | Technology | Search

 


Geminid Meteor Show Peaks 15 Dec

Observing the Geminids in December

Chart showing the sky surrounding the radiant of the Geminids.

The Geminid Meteor shower is one of the most active of the year, sometimes surpassed only by the Perseids in intensity.

The shower peaks on the morning of 15 December in New Zealand. The Geminids don't seem to have a sharp peak like the Leonids, and observations can be made for a week either side of the peak.

At it's height, the Geminids have a zenith hourly rate of about 80 meteors per hour. So, if for you the radiant was at the zenith, and you could observe the whole sky at once, you might expect to see 80 meteors an hour.

Alas, in New Zealand, the radiant is low. In fact it lies just a degree or two to the left of, and slightly below, Castor. So, in New Zealand we effectivly lose out on seeing 50% of the meteors before we start. But it is still a shower worth looking at. I have found from when I lived in Auckland, and if it was fine, seeing a dozen or more Geminids an hour around the peak was quite normal. And of course one cannot observe all the sky at once. Geminids are inclined to leave good trains, and some of those meteors travel long distances. One I observed appeared first near Sirius, and travelled overhead and a long way towards the southern horizon. Remember, meteors do not appear at the radiant, unless they are heading straight for you, but generally tens of degrees from it.

The best time to look for Geminids is any time after about 1 or 2 am through until dawn. Gemini will be approaching north. I would suggest you look for Geminids streaking through the sky in the region of Orion and the area of sky to the right of Orion. Make sure you have a dark sky from northwest sound to east, and at least up to the zenith. Keep glow from city lights to the south of you.

Most meteor showers are associated with cometary debris travelling in the orbit of the comets. The Geminids are a bit different. The appear to be travelling in the same orbit as Apollo asteroid 3200 Phaethon. Is this an asteroid that perhaps was once surrounded by and icy snowball of cometary matter?

Full post: Geminids in December

© Scoop Media

 
 
 
 
 
Business Headlines | Sci-Tech Headlines

 

China Shopping: NZ-China FTA Upgrade Agreed Among Slew Of New Deals

New Zealand Prime Minister Bill English and China Premier Li Keqiang signed off a series of cooperation deals spanning trade, customs, travel and climate change and confirmed commencement of official talks on an upgrade to the nine-year old free-trade agreement between the two countries. More>>

ALSO:


Media: TVNZ Flags Job Cuts To Arrest Profit Decline

Chief executive Kevin Kenrick said the changes were aimed at creating "a sustainable future video content business for TVNZ in an ever-changing media market." More>>

ALSO:

Reserve Bank: Wheeler Keeps OCR At 1.75%

Reserve Bank governor Graeme Wheeler kept the official cash rate unchanged at 1.75 percent, as expected, and reiterated his view that the benchmark rate doesn't need shifting for the foreseeable future. More>>

ALSO:

Trade Plans: Prime Minister's Speech To International Business Forum

"The work to improve public services, build infrastructure, and solve social problems is possible only because we have enjoyed sustained, solid economic growth. A big reason for that is the Government’s consistent agenda of economic reform, and our determination to open up more opportunities for trade with the world." More>>

ALSO:

Get More From Scoop

 
 
 
 
 
 
 
 
Sci-Tech
Search Scoop  
 
 
Powered by Vodafone
NZ independent news