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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1975394308252064 3.3949e-08  
a 2.417563195249824 7.1556e-09 au
q 1.939999137676207 8.4342e-08 au
i 2.071894074186093 4.0206e-06 deg
node 3.396196152164611 9.0668e-05 deg
peri 18.36219756493168 9.1192e-05 deg
M 348.0803222007345 1.0608e-05 deg
tp 2459245.959765940574
(2021-Jan-31.45976594)
4.0518e-05 TDB
period 1372.983063318628
3.76
6.0957e-06
1.669e-08
d
yr
n .2622027974109503 1.1641e-09 deg/d
Q 2.895127252823442 8.5691e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1261  
   data-arc span      14604 days (39.98 yr)  
   first obs. used      1981-02-13  
   last obs. used      2021-02-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51477  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 10:43:50  

Additional Information
 Earth MOID = .941743 au 
 Jupiter MOID = 2.56717 au 
 T_jup = 3.488 
[ 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 15.37   n/a MPCxxxxx  

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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