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305320 (2008 AW66)
Classification: Main-belt Asteroid          SPK-ID: 2305320
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08207023040046227 5.8506e-08  
a 2.774213120217617 3.1736e-08 au
q 2.546532810261372 1.6605e-07 au
i 3.38572064134873 7.3894e-06 deg
node 334.2303180857854 0.0001081 deg
peri 101.2153795386851 0.00012169 deg
M 290.7414834065367 5.9344e-05 deg
tp 2459325.197424277093
(2021-Apr-20.69742428)
0.00028169 TDB
period 1687.750164010669
4.62
2.8961e-05
7.929e-08
d
yr
n .213301712348537 3.6601e-09 deg/d
Q 3.001893430173863 3.434e-08 au
  Orbit Determination Parameters
   # obs. used (total)      177  
   data-arc span      7933 days (21.72 yr)  
   first obs. used      1997-11-30  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61138  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 05:54:36  

Additional Information
 Earth MOID = 1.56436 au 
 Jupiter MOID = 2.18645 au 
 T_jup = 3.329 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456929.5 (2014-Sep-29.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08172079042395428 5.7889e-08  
q 2.549055586101577 1.6518e-07 au
tp 2457624.862624095823
(2016-Aug-24.36262410)
0.00026645 TDB
node 334.5276077048324 0.00010804 deg
peri 98.67773130621329 0.00012189 deg
i 3.386464786208357 7.3896e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      177  
   data-arc span      7933 days (21.72 yr)  
   first obs. used      1997-11-30  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61138  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 05:54:36  

Additional Information
 Jupiter MOID = 2.18645 au 
 T_jup = 3.329 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.351104991901427E-15 -9.406423291404268E-15 1.60493488844891E-13 3.28279009038648E-15 1.268679641846095E-13 -2.289679103387929E-15
q -9.406423291404268E-15 2.728294369229982E-14 4.16004062345105E-12 -7.652249769700078E-15 5.560855469701475E-13 7.301135897114531E-15
tp 1.60493488844891E-13 4.16004062345105E-12 7.099424120247421E-8 1.979490647699648E-11 1.50568558840554E-8 5.73953481878465E-12
node 3.28279009038648E-15 -7.652249769700078E-15 1.979490647699648E-11 1.167369836111382E-8 -1.164800150128909E-8 2.743117255633048E-11
peri 1.268679641846095E-13 5.560855469701475E-13 1.50568558840554E-8 -1.164800150128909E-8 1.485828220277003E-8 -2.621549594538223E-11
i -2.289679103387929E-15 7.301135897114531E-15 5.73953481878465E-12 2.743117255633048E-11 -2.621549594538223E-11 5.460641436654886E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.5   n/a MPO413264  

305320 (2008 AW66)          Discovered 2008-Jan-11 by Spacewatch at Kitt Peak
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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