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Eight large asteroids March-June

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#1 WillCarney

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Posted 29 March 2013 - 10:50 AM

We seem to have no less than at least eight asteroids one mile or so or bigger coming by us from now till middle of June. Some of these will be visible some won't but that's a fair amount of large one's in a short time.

These are the PHA's:
2005 NZ6 - Apr 29 - 24.9 LD -1.3 km dia
2001 DQ8 - Apr 30 - 74.3 LD - 1.1 km dia
2004 BV102 - May 25 - 69.9 LD - 1.4 km dia
1998 QE2 - May 31 - 15.2 LD - 2.2 km dia
2000 FM10 - Jun 5 - 50.3 LD - 1.3 km dia
2002 KL3 - Jun 6 - 66.4 LD - 1.1 km dia
1999 WC2 - Jun 12 - 39.2 LD - 1.9 km dia
2006 RO36 - Jun 18 - 70.9 LD - 1.2 km dia

http://www.spaceweather.com/

One non-PHA NEO:

163364 (2002 OD20) - May-23 - 15.1 LD - 460 m - 1.0 km dia

http://neo.jpl.nasa.gov/ca/

William

#2 WillCarney

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Posted 08 April 2013 - 10:54 AM

1998 QE2 (285263) - May 31 - 15.2 LD - 2.2 km dia

NASA predicts 10.55 on the 2nd of June. Well placed in Libra. Should be easily spotted in binoculars with fast movement.

William

#3 RedLionNJ

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Posted 23 April 2013 - 08:05 PM

285263 looks particularly promising for visible motion - 20 arcmin per hour at highest elevation (in the dark) for the eastern US. Guaranteed cloud :(

#4 Astrohat

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Posted 13 May 2013 - 03:00 PM

Just discovered this section of this forum. Can a 90mm refractor catch any of these NEO's?

#5 Astrohat

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Posted 26 May 2013 - 06:56 PM

1998 QE2 visit is on May 31.

Any chance to view it with 7X50 binoculars?

#6 WillCarney

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Posted 27 May 2013 - 02:08 AM

1998 QE2 visit is on May 31.
Any chance to view it with 7X50 binoculars?


Possibly. I've seen 11-12th magnitude galaxies with my 15x70 Celestron's. This one is predicted to be from 9-10.5 give or take. Magnitude prediction is not always correct due to several factors including surface composition affecting brightness as well as rotation. I've photographed differences in up to .5 and even more in magnitude just due to the rotation. We've had nothing but rain and clouds here so I'll be lucky to get it. I tried to image it the other day but my alignment was off and I missed it. William

#7 RobK

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Posted 27 May 2013 - 11:13 AM

I was lucky enough to get an image of 285263 (1998 QE2) tonight before moonrise, attached. Another version, stacked on stars, is here:
http://i727.photobuc...13trailtext.jpg

Here's a small, rough animation made from 4 consecutive frames - the asteroid is at centre:
http://i727.photobuc...13animation.gif

Looking forward to eyeballing it over the next few nights if the weather holds out.

Cheers -

Rob

Attached Files



#8 PhilCo126

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Posted 07 June 2013 - 11:16 AM

1998 QE2 visit is on May 31.
Any chance to view it with 7X50 binoculars?


A 10X 50 binocular shows targets up to magnitude 8 (depending on observer's dark-adapted pupil).
My 45X 100 binocular shows targets up to magnitude 14
AstroPhotography (DSLR or webcam) is the way to go :p






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