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Asteroid (6) Hebe
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Karl Henckediscovered theAsteroid (6) Hebein 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= -624'37" (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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