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183979 (2004 EJ31)
Classification: Main-belt Asteroid          SPK-ID: 2183979
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04632884133193415 6.6941e-08  
a 3.109365495721848 3.093e-08 au
q 2.965312195027559 2.2431e-07 au
i 8.983945581164988 4.3589e-06 deg
node 254.5433409529499 3.8713e-05 deg
peri 299.6127476424346 6.5533e-05 deg
M 330.4222116893794 5.3453e-05 deg
tp 2459165.039163422004
(2020-Nov-11.53916342)
0.00029772 TDB
period 2002.654769513378
5.48
2.9882e-05
8.181e-08
d
yr
n .1797613874744252 2.6823e-09 deg/d
Q 3.253418796416136 3.2363e-08 au
  Orbit Determination Parameters
   # obs. used (total)      472  
   data-arc span      9008 days (24.66 yr)  
   first obs. used      1995-08-25  
   last obs. used      2020-04-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52272  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 04:40:51  

Additional Information
 Earth MOID = 1.97439 au 
 Jupiter MOID = 1.79501 au 
 T_jup = 3.199 
[ 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 14.9   n/a MPO427122  
diameter diameter 3.969 km 0.648 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.148   0.071 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

183979 (2004 EJ31)          Discovered 2004-Mar-14 by NEAT at Palomar
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

[ show close-approach data ]
Alternate Designations
 2004 EJ31 = 1995 QM13 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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