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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1908414723073203 8.7214e-08  
a 2.677972553931807 2.3698e-08 AU
q 2.166904328940866 2.269e-07 AU
i 12.57714045740614 8.6071e-06 deg
node 353.8770699507971 2.8395e-05 deg
peri 195.0142772317194 3.1578e-05 deg
M 229.1886288475537 1.5885e-05 deg
tp 2457582.135099327203
(2016-Jul-12.63509933)
7.4485e-05 JED
period 1600.691391834535
4.38
2.1248e-05
5.817e-08
d
yr
n .2249028150188325 2.9854e-09 deg/d
Q 3.189040778922748 2.8221e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      671  
   data-arc span      12401 days (33.95 yr)  
   first obs. used      1981-03-03  
   last obs. used      2015-02-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53556  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 18:22:19  

Additional Information
 Earth MOID = 1.17223 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
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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