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312349 (2008 DE4)
Classification: Main-belt Asteroid          SPK-ID: 2312349
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03336575666973572 6.9145e-08  
a 2.630565963527194 3.2176e-08 au
q 2.542795139684456 1.9283e-07 au
i 11.6065145291708 9.0049e-06 deg
node 335.860836925144 2.5837e-05 deg
peri 248.6709821251092 0.00012583 deg
M 236.0695990309222 0.00012203 deg
tp 2459536.972637311093
(2021-Nov-18.47263731)
0.00052952 TDB
period 1558.375894226162
4.27
2.8592e-05
7.828e-08
d
yr
n .2310097334884433 4.2384e-09 deg/d
Q 2.718336787369931 3.3249e-08 au
  Orbit Determination Parameters
   # obs. used (total)      185  
   data-arc span      8199 days (22.45 yr)  
   first obs. used      1997-08-12  
   last obs. used      2020-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58372  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 18:45:28  

Additional Information
 Earth MOID = 1.56258 au 
 Jupiter MOID = 2.30098 au 
 T_jup = 3.370 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457381.5 (2015-Dec-25.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03435047028655654 6.7658e-08  
q 2.539085098227683 1.8894e-07 au
tp 2457986.059165094651
(2017-Aug-20.55916509)
0.00052255 TDB
node 335.925996779354 2.5801e-05 deg
peri 250.3682642575652 0.00012511 deg
i 11.61629431345002 9.0113e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      185  
   data-arc span      8199 days (22.45 yr)  
   first obs. used      1997-08-12  
   last obs. used      2020-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58372  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 18:45:28  

Additional Information
 Jupiter MOID = 2.30098 au 
 T_jup = 3.370 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.577563896658753E-15 -1.26228110411795E-14 -2.145848185643847E-11 5.446892970102354E-14 -5.077819043172363E-12 4.320033471125132E-15
q -1.26228110411795E-14 3.569724121697425E-14 5.78719229483842E-11 -1.454007404673649E-13 1.362452424839384E-11 -8.894615890367757E-15
tp -2.145848185643847E-11 5.78719229483842E-11 2.730619161102634E-7 -4.597829500960104E-10 6.398090119886303E-8 -1.492973495141749E-11
node 5.446892970102354E-14 -1.454007404673649E-13 -4.597829500960104E-10 6.656970367254694E-10 -7.586104004771365E-10 7.790533599596323E-11
peri -5.077819043172363E-12 1.362452424839384E-11 6.398090119886303E-8 -7.586104004771365E-10 1.565321408945208E-8 -7.993560892484352E-11
i 4.320033471125132E-15 -8.894615890367757E-15 -1.492973495141749E-11 7.790533599596323E-11 -7.993560892484352E-11 8.120412640976397E-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 16.4   n/a MPO455302  
diameter diameter 3.270 km 1.094 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.035   0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

312349 (2008 DE4)          Discovered 2008-Feb-26 by Sarneczky, K. at Piszkesteto
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11

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