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58137 (1981 EJ44)
Classification: Main-belt Asteroid          SPK-ID: 2058137
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 .07357490441178777 4.7632e-08  
a 3.122100560245367 2.5564e-08 au
q 2.892392309961325 1.5595e-07 au
i 8.919559771307135 5.4752e-06 deg
node 193.0264614299751 2.7973e-05 deg
peri 134.7153439653538 4.2151e-05 deg
M 244.1012171201907 3.2315e-05 deg
tp 2459649.201843514489
(2022-Mar-10.70184351)
0.00018311 TDB
period 2014.97080351048
5.52
2.4748e-05
6.776e-08
d
yr
n .178662638373126 2.1944e-09 deg/d
Q 3.351808810529408 2.7445e-08 au
  Orbit Determination Parameters
   # obs. used (total)      727  
   data-arc span      14372 days (39.35 yr)  
   first obs. used      1981-03-07  
   last obs. used      2020-07-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5611  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 22:52:13  

Additional Information
 Earth MOID = 1.89059 au 
 Jupiter MOID = 1.94788 au 
 T_jup = 3.193 
[ 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 14.4   n/a MPO468480  
diameter diameter 5.290 km 0.174 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.069   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

58137 (1981 EJ44)          Discovered 1981-Mar-07 by Bus, S. J. at Siding Spring
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1981 EJ44 = 2000 SS108 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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