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52242 (1981 EX)
Classification: Main-belt Asteroid          SPK-ID: 2052242
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1906799349360408 9.8072e-08  
a 2.678308468191953 2.6557e-08 AU
q 2.167608783738464 2.5239e-07 AU
i 12.57646836659465 9.3568e-06 deg
node 353.8752393102359 2.8908e-05 deg
peri 195.0151088402744 3.2746e-05 deg
M 184.2056850120296 1.577e-05 deg
tp 2457582.292759789836
(2016-Jul-12.79275979)
7.4673e-05 JED
period 1600.992577852136
4.38
2.3813e-05
6.52e-08
d
yr
n .2248605052766514 3.3445e-09 deg/d
Q 3.189008152645441 3.1621e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      570  
   data-arc span      11964 days (32.76 yr)  
   first obs. used      1981-03-03  
   last obs. used      2013-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54598  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-10 08:17:33  

Additional Information
 Earth MOID = 1.17218 AU 
 T_jup = 3.318 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.1 mag n/a MPO270398  

52242 (1981 EX)          Discovered 1981-Mar-03 by Debehogne, H., DeSanctis, G. at La Silla (809)
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1981 EX = 2000 QQ200 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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