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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 ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03336577511676835 6.8114e-08  
a 2.630565969668006 3.1893e-08 au
q 2.54279509709424 1.909e-07 au
i 11.60651707606423 8.8927e-06 deg
node 335.8608452406339 2.5487e-05 deg
peri 248.6709525394421 0.00012484 deg
M 236.0696180291575 0.00012133 deg
tp 2459536.972556949633
(2021-Nov-18.47255695)		 0.00052662 TDB
period 1558.375899682987
4.27		 2.834e-05
7.759e-08		 d
yr
n .2310097326795371 4.2011e-09 deg/d
Q 2.718336842241772 3.2957e-08 au
   Orbit Determination Parameters
   # obs. used (total)      193  
   data-arc span      8475 days (23.20 yr)  
   first obs. used      1997-08-12  
   last obs. used      2020-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58853  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 18:47:47  

Additional Information
 Earth MOID = 1.56258 au 
 Jupiter MOID = 2.30098 au 
 T_jup = 3.370 
[ show covariance matrix ]

[ 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

[ show close-approach data ]
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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