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Post Info TOPIC: Asteroid 3 Juno
Blobrana


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Watch for speedy asteroid Juno late tonight
You'll need a small telescope and a bit of patience. But now through early next week, you should be able to spot asteroid Juno streaking through the cosmos, high above the southeast horizon, says NASA. We suggest that you look for Juno shortly before midnight, roughly 50 degrees above the southeast. (Hold your arm out straight. Make the bottom of your fist even with the horizon. A fist is about 10 degrees tall, astronomically speaking.)

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Asteroid Juno Grabs the Spotlight
Toward the end of September, the sun will turn a spotlight on the asteroid Juno, giving that bulky lump of rock a rare featured cameo in the night sky. Those who get out to a dark, unpolluted sky will be able to spot the asteroid's silvery glint near the planet Uranus with a pair of binoculars.

"It can usually be seen by a good amateur telescope, but the guy on the street doesn't usually get a chance to observe it. This is going to be as bright as it gets until 2018" -  Don Yeomans, manager of NASA's Near Earth Object Program Office at JPL.


Sky chart of Juno's location on September 21, 2009
Expand (46kb, 1280 x 720)
Image Credit: NASA/JPL

Skywatchers with telescopes can probably see Juno from now until the end of the year, but it is most visible to binoculars in late September. On or before Sept. 21, look for Juno near midnight a few degrees east of the brighter glow of Uranus and in the constellation Pisces. It will look like a grey dot in the sky, and each night at the end of September, it will appear slightly more southwest of its location the night before. By Sept. 25, it will be closer to the constellation Aquarius and best seen before midnight.

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Asteroid 3 Juno is at Opposition on the 21st September, 2009.

Ephemeris
Date       UT      R.A. (J2000) Decl.    Delta     r     El.    Ph.   V   
            h m s                                                            
2009 09 01 000000 00 11 09.3 +00 13 47   1.301   2.260  155.9  10.5   8.2    
2009 09 02 000000 00 10 44.8 +00 03 04   1.294   2.258  157.0  10.0   8.2    
2009 09 03 000000 00 10 19.0 -00 07 51   1.287   2.255  158.2   9.6   8.1   
2009 09 04 000000 00 09 52.0 -00 18 59   1.281   2.253  159.3   9.1   8.1    
2009 09 05 000000 00 09 23.8 -00 30 18   1.274   2.250  160.4   8.6   8.1    
2009 09 06 000000 00 08 54.4 -00 41 49   1.268   2.248  161.6   8.1   8.1    
2009 09 07 000000 00 08 23.9 -00 53 31   1.263   2.245  162.7   7.7   8.0    
2009 09 08 000000 00 07 52.3 -01 05 23   1.257   2.243  163.9   7.2   8.0   
2009 09 09 000000 00 07 19.6 -01 17 25   1.252   2.240  165.0   6.7   8.0    
2009 09 10 000000 00 06 45.9 -01 29 36   1.247   2.238  166.2   6.2   7.9    
2009 09 11 000000 00 06 11.3 -01 41 56   1.242   2.235  167.3   5.7   7.9    
2009 09 12 000000 00 05 35.7 -01 54 24   1.237   2.233  168.5   5.2   7.9   
2009 09 13 000000 00 04 59.3 -02 06 59   1.233   2.230  169.6   4.7   7.8    
2009 09 14 000000 00 04 22.0 -02 19 41   1.229   2.228  170.8   4.2   7.8    
2009 09 15 000000 00 03 44.0 -02 32 29   1.225   2.225  171.9   3.7   7.8    
2009 09 16 000000 00 03 05.4 -02 45 22   1.222   2.223  172.9   3.2   7.8   
2009 09 17 000000 00 02 26.1 -02 58 19   1.218   2.220  174.0   2.7   7.7    
2009 09 18 000000 00 01 46.3 -03 11 20   1.215   2.218  174.9   2.3   7.7    
2009 09 19 000000 00 01 06.0 -03 24 23   1.212   2.216  175.7   1.9   7.7    
2009 09 20 000000 00 00 25.3 -03 37 28   1.210   2.213  176.3   1.7   7.6    
2009 09 21 000000 23 59 44.3 -03 50 35   1.208   2.211  176.5   1.6   7.6    
2009 09 22 000000 23 59 03.0 -04 03 41   1.206   2.208  176.3   1.7   7.6    
2009 09 23 000000 23 58 21.5 -04 16 47   1.204   2.206  175.7   1.9   7.6   
2009 09 24 000000 23 57 40.0 -04 29 51   1.203   2.204  174.9   2.3   7.7    
2009 09 25 000000 23 56 58.4 -04 42 52   1.201   2.201  174.0   2.7   7.7    
2009 09 26 000000 23 56 16.9 -04 55 50   1.200   2.199  172.9   3.2   7.7    
2009 09 27 000000 23 55 35.5 -05 08 45   1.200   2.197  171.8   3.7   7.7    
2009 09 28 000000 23 54 54.3 -05 21 34   1.199   2.194  170.7   4.2   7.7   
2009 09 29 000000 23 54 13.4 -05 34 18   1.199   2.192  169.6   4.7   7.8    
2009 09 30 000000 23 53 32.8 -05 46 55   1.199   2.190  168.4   5.3   7.8


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Blobrana


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Asteroid 3 Juno is at Opposition on the 13th June, 2008.

Juno-2008-6-13-0h00m
Expand (9kb, 1008 x 712)

Magnitude: 10.1
Phase: 6 °
Distance: 2.2827 AU
Solar Distance: 3.2610 AU 

Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V

2008 06 04    17 36.75   -04 44.6    2.302    3.269   158.9     6.4    10.1
2008 06 09    17 32.54   -04 36.4    2.288    3.264   160.9     5.9    10.1
2008 06 14    17 28.23   -04 31.4    2.280    3.258   161.3     5.8    10.0
2008 06 19    17 23.91   -04 29.7    2.279    3.252   160.0     6.1    10.1
2008 06 24    17 19.68   -04 31.2    2.285    3.246   157.3     6.9    10.1
2008 06 29    17 15.62   -04 36.0    2.297    3.240   153.7     8.0    10.1


Juno, designated 3 Juno in the Minor Planet Centre catalogue system, was the third asteroid to be discovered and is one of the largest main belt asteroids, being the second heaviest of the stony S-type. It was discovered on September 1, 1804 by German astronomer Karl L. Harding and named after the mythological figure Juno, the highest Roman goddess.

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