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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04663245512234002 7.0306e-08  
a 3.11037562529846 3.6922e-08 au
q 2.965331173538109 2.2994e-07 au
i 8.98436025800769 5.6508e-06 deg
node 254.5470060922347 4.4773e-05 deg
peri 299.3424268243766 7.1784e-05 deg
M 258.824850472703 5.8584e-05 deg
tp 2459163.604555555516
(2020-Nov-10.10455556)
0.00032943 TDB
period 2003.630742797102
5.49
3.5676e-05
9.768e-08
d
yr
n .1796738252765248 3.1992e-09 deg/d
Q 3.255420077058811 3.8644e-08 au
  Orbit Determination Parameters
   # obs. used (total)      357  
   data-arc span      8569 days (23.46 yr)  
   first obs. used      1995-08-25  
   last obs. used      2019-02-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52249  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 13:08:00  

Additional Information
 Earth MOID = 1.97485 au 
 Jupiter MOID = 1.79408 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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