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JPL Small-Body Database Browser
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52254 (1981 EJ36)
Classification: Main-belt Asteroid          SPK-ID: 2052254
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1978760351963527 4.9789e-08  
a 2.418706965385961 1.0976e-08 au
q 1.940102820773585 1.1736e-07 au
i 2.071457132819563 4.9083e-06 deg
node 3.410222245850141 0.00010517 deg
peri 18.27741242646241 0.00010576 deg
M 295.7392201366623 1.5141e-05 deg
tp 2459245.754396181149
(2021-Jan-31.25439618)
5.8907e-05 TDB
period 1373.957533864076
3.76
9.3521e-06
2.56e-08
d
yr
n .2620168317630219 1.7835e-09 deg/d
Q 2.897311109998337 1.3147e-08 au
  Orbit Determination Parameters
   # obs. used (total)      941  
   data-arc span      14016 days (38.37 yr)  
   first obs. used      1981-02-13  
   last obs. used      2019-06-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55169  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 10:24:52  

Additional Information
 Earth MOID = .943151 au 
 Jupiter MOID = 2.56391 au 
 T_jup = 3.487 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.3   n/a MPO236635  

52254 (1981 EJ36)          Discovered 1981-Mar-07 by Bus, S. J. at Siding Spring
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1981 EJ36 = 1996 EF3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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