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Post Info TOPIC: Asteroid 6 Hebe
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Asteroid (6) Hebe
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Karl Hencke discovered the Asteroid (6) Hebe in 1847



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Asteroid 6 Hebe
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Asteroid (6) Hebe is at Opposition on the 27st February, 2012. 

Magnitude: 9.4
Distance to Earth: 1.774 AU  
Distance to Sun: 2.759 AU 

 

Asteroid Observation of Hebe

Spoiler

Images taken remotely on 2 Dec 2006 with the Iowa Robotic Telescope Rigel 



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Ephemeris

Date       UT      R.A. (J2000) Decl.    Delta     r     El.    Ph.   V 
2012 02 24 000000 10 55 22.4 +15 05 34   1.772   2.753  171.1   3.2   9.4
2012 02 25 000000 10 54 29.5 +15 15 54   1.772   2.755  171.6   3.0   9.4
2012 02 26 000000 10 53 36.4 +15 26 10   1.773   2.756  172.0   2.9   9.4
2012 02 27 000000 10 52 43.0 +15 36 20   1.774   2.758  172.1   2.8   9.4
2012 02 28 000000 10 51 49.5 +15 46 25   1.775   2.759  172.1   2.8   9.4
2012 02 29 000000 10 50 55.8 +15 56 23   1.776   2.761  171.9   2.9   9.4
2012 03 01 000000 10 50 02.1 +16 06 15   1.778   2.762  171.5   3.1   9.4
2012 03 02 000000 10 49 08.5 +16 16 00   1.780   2.763  170.9   3.3   9.5
2012 03 03 000000 10 48 14.9 +16 25 37   1.783   2.765  170.2   3.5   9.5
2012 03 04 000000 10 47 21.5 +16 35 06   1.786   2.766  169.4   3.8   9.5
2012 03 05 000000 10 46 28.3 +16 44 26   1.789   2.768  168.5   4.1   9.5
2012 03 06 000000 10 45 35.4 +16 53 38   1.792   2.769  167.6   4.4   9.5
2012 03 07 000000 10 44 42.8 +17 02 40   1.796   2.770  166.6   4.8   9.6

Hebeb.gif

24th February, 2012

Ed ~ Quite a difficult target as there are no nearby bright stars, but i managed to star hop using the faint mag 8 stars...Hebe was at magnitude ~9.5



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Spoiler

This is a close up chart of the motion of asteroid (6) Hebe from 23rd February to the 30th March, 2012 as it moves through the central part of the constellation Leo.
At magnitude ~10 the asteroid should be visible in medium to large telescopes.



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Asteroid (6) Hebe
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Ephemeris

Date       UT      R.A. (J2000) Decl.    Delta     r     El.    Ph.   V  
2011 10 16 000000 10 01 01.8 +10 08 03   2.980   2.515   53.4  18.5  10.9
2011 10 26 000000 10 15 04.1 +09 18 44   2.887   2.536   59.8  19.8  10.9
2011 11 05 000000 10 28 07.0 +08 34 18   2.786   2.557   66.5  20.8  10.9
2011 11 15 000000 10 40 02.9 +07 56 46   2.677   2.577   73.5  21.6  10.8
2011 11 25 000000 10 50 42.7 +07 28 18   2.561   2.597   81.0  22.1  10.8
2011 12 05 000000 10 59 53.6 +07 11 23   2.442   2.616   88.9  22.1  10.7
2011 12 15 000000 11 07 22.6 +07 08 27   2.322   2.635   97.3  21.7  10.6
2011 12 25 000000 11 12 54.5 +07 22 00   2.203   2.653  106.3  20.8  10.5
2012 01 04 000000 11 16 12.5 +07 54 15   2.090   2.671  116.0  19.3  10.3
2012 01 14 000000 11 17 03.5 +08 46 29   1.987   2.689  126.2  17.2  10.2
2012 01 24 000000 11 15 18.5 +09 58 37   1.899   2.705  137.2  14.3  10.0
2012 02 03 000000 11 10 59.5 +11 28 12   1.831   2.721  148.6  10.9   9.8
2012 02 13 000000 11 04 26.0 +13 09 42   1.787   2.737  160.3   7.0   9.6
2012 02 23 000000 10 56 14.9 +14 55 10   1.771   2.752  170.4   3.4   9.4
2012 03 04 000000 10 47 21.5 +16 35 06   1.786   2.766  169.4   3.8   9.5
2012 03 14 000000 10 38 49.2 +18 01 04   1.829   2.780  159.0   7.4   9.7
2012 03 24 000000 10 31 34.3 +19 07 31   1.899   2.793  147.7  11.0   9.9
2012 04 03 000000 10 26 20.3 +19 52 03   1.993   2.806  136.7  14.1  10.2
2012 04 13 000000 10 23 29.4 +20 15 17   2.105   2.817  126.4  16.7  10.4
2012 04 23 000000 10 23 06.0 +20 19 17   2.231   2.829  116.7  18.5  10.6
2012 05 03 000000 10 25 03.9 +20 06 38   2.367   2.839  107.6  19.8  10.7


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RE: Asteroid 6 Hebe
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Asteroid (6) Hebe in the constellation Cetus, 4.50 UT, 1st August, 2010.

Magnitude= 8.7mag
Best seen from 23.1h - 5.0h
RA= 0h24m23.3s  Dec= -6°24'37" (J2000)
Distance to Sun=2.009AU
Distance to Earth=1.244AU
hourly motion: dRA= 26.6"/h  dDec=-21.5"/h

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Opposition: May 2, 2009     
Distance to Earth: 1.88760  AU
Magnitude: 9.9

Discoverer : Karl Ludwig Hencke
Date : 01 July 1847
Discovery site : Driesen
Diameter : 205x185x170 km.
Perihelion (q) : 1.937 A.U.
Aphelion (Q) : 2.914 A.U.
Period (P) : 3.78 years
Mean Distance : 2.426 AU
Synodic Period : 460.50 days
Orbital Velocity : 18.93 kms-1
Eccentricity (e) : 0.202
Inclination (i) : 14.751°
Polar Tilt : 42°
Mass : 1.4 x 10^19 kg.
Mean Density : 4.1 g.cm-3
Sidereal Rotation : 7.275 hours.
Mean Sidereal Rotation : 0.3031 days.
Satellites : 1
Maximum Diameter : 0.261" (arcsec)
Minimum Diameter : 0.066" (arcsec)
Maximum Magnitude : 7.6
Minimum Magnitude : 11.5

Ephemeris
Date       UT      R.A. (J2000) Decl.    Delta     r     El.    Ph.   V      
            h m s                                                            
2009 05 01 000000 15 07 05.1 +05 46 19   1.896   2.853  157.6   7.7   9.9    
2009 05 02 000000 15 06 11.7 +05 51 35   1.895   2.853  157.6   7.7   9.9    
2009 05 03 000000 15 05 17.9 +05 56 40   1.894   2.852  157.6   7.7   9.9   
2009 05 04 000000 15 04 23.8 +06 01 34   1.893   2.851  157.5   7.8   9.9    
2009 05 05 000000 15 03 29.5 +06 06 16   1.892   2.850  157.4   7.8   9.9    
2009 05 06 000000 15 02 35.1 +06 10 47   1.892   2.849  157.2   7.9   9.9    
2009 05 07 000000 15 01 40.5 +06 15 06   1.892   2.848  156.9   8.0   9.9    
2009 05 08 000000 15 00 45.9 +06 19 12   1.892   2.847  156.6   8.1   9.9    
2009 05 09 000000 14 59 51.3 +06 23 07   1.892   2.846  156.3   8.2   9.9    
2009 05 10 000000 14 58 56.8 +06 26 48   1.893   2.845  155.9   8.3   9.9    
2009 05 11 000000 14 58 02.3 +06 30 17   1.894   2.844  155.4   8.5   9.9    
2009 05 12 000000 14 57 08.1 +06 33 33   1.895   2.843  155.0   8.7   9.9    
2009 05 13 000000 14 56 14.0 +06 36 36   1.897   2.842  154.4   8.8   9.9    
2009 05 14 000000 14 55 20.2 +06 39 26   1.899   2.841  153.8   9.0   9.9    
2009 05 15 000000 14 54 26.7 +06 42 03   1.901   2.840  153.2   9.2   9.9   
2009 05 16 000000 14 53 33.6 +06 44 25   1.903   2.839  152.6   9.4   9.9    
2009 05 17 000000 14 52 40.9 +06 46 34   1.905   2.838  151.9   9.7   9.9    
2009 05 18 000000 14 51 48.7 +06 48 30   1.908   2.837  151.2   9.9   9.9    
2009 05 19 000000 14 50 57.0 +06 50 11   1.911   2.836  150.5  10.1  10.0    
2009 05 20 000000 14 50 05.9 +06 51 39   1.914   2.835  149.8  10.4  10.0    
2009 05 21 000000 14 49 15.4 +06 52 53   1.918   2.834  149.0  10.6  10.0  
2009 05 22 000000 14 48 25.6 +06 53 53   1.922   2.833  148.2  10.9  10.0    
2009 05 23 000000 14 47 36.5 +06 54 39   1.925   2.832  147.4  11.1  10.0    
2009 05 24 000000 14 46 48.2 +06 55 10   1.930   2.830  146.6  11.4  10.0    
2009 05 25 000000 14 46 00.7 +06 55 28   1.934   2.829  145.8  11.6  10.0    
2009 05 26 000000 14 45 14.1 +06 55 32   1.939   2.828  144.9  11.9  10.0    
2009 05 27 000000 14 44 28.3 +06 55 22   1.944   2.827  144.1  12.1  10.1    
2009 05 28 000000 14 43 43.6 +06 54 58   1.949   2.826  143.2  12.4  10.1    
2009 05 29 000000 14 42 59.8 +06 54 21   1.954   2.825  142.3  12.7  10.1    
2009 05 30 000000 14 42 17.0 +06 53 30   1.959   2.824  141.5  12.9  10.1


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(6) Hebe
Epoch 2007 Oct. 27.0 TT = JDT 2454400.5  (M-c)          Bowell
M  70.56894              (2000.0)            P               Q
n   0.26090929     Peri.  239.54944     +0.93075725     -0.32478908
a   2.4255470      Node   138.73722     +0.35559967     +0.91095939
e   0.2019120      Incl.   14.75216     -0.08508706     +0.25429323
P   3.78           H    5.71          G   0.24

Ephemeris
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2008 01 01    09 45.86   +09 34.7    1.717    2.504   134.3    16.3     9.7
2008 01 06    09 43.97   +10 07.1    1.681    2.515   140.0    14.6     9.6
2008 01 11    09 41.38   +10 44.6    1.650    2.525   145.9    12.6     9.5
2008 01 16    09 38.16   +11 26.7    1.625    2.536   152.0    10.5     9.4
2008 01 21    09 34.39   +12 12.7    1.606    2.546   158.2     8.3     9.3
2008 01 26    09 30.17   +13 01.6    1.594    2.556   164.5     5.9     9.2
2008 01 31    09 25.60   +13 52.6    1.589    2.566   170.9     3.5     9.1
2008 02 05    09 20.84   +14 44.4    1.591    2.576   177.3     1.0     8.9
2008 02 10    09 16.04   +15 35.8    1.601    2.586   176.1     1.5     9.0
2008 02 15    09 11.35   +16 25.8    1.618    2.596   169.7     3.9     9.1
2008 02 20    09 06.92   +17 13.2    1.643    2.606   163.4     6.2     9.3
2008 02 25    09 02.88   +17 57.4    1.674    2.615   157.3     8.4     9.4



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6 Hebe is a large Main belt asteroid. Hebe is the thirteenth largest asteroid by mass, containing around 0.5 percent of the mass of the entire asteroid belt. Its apparently high bulk density (greater than that of the Earth's Moon or even Mars), however, means that by volume it does not rank among the top twenty asteroids.

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6 Hebe a gentle gaint in the asteroid belt.



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