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204966 (1990 QX3)
Classification: Main-belt Asteroid          SPK-ID: 2204966
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2921259376699195 8.9409e-08  
a 2.567369465585223 1.9603e-08 au
q 1.81737425310602 2.2616e-07 au
i 5.432581575772994 7.3943e-06 deg
node 338.0199447165421 0.00012052 deg
peri 4.469826544765376 0.00012212 deg
M 107.0467882780413 2.8388e-05 deg
tp 2457153.711356790626
(2015-May-11.21135679)
0.00011743 JED
period 1502.557098094354
4.11
1.7209e-05
4.712e-08
d
yr
n .2395915605846704 2.744e-09 deg/d
Q 3.317364678064427 2.5329e-08 au
  Orbit Determination Parameters
   # obs. used (total)      264  
   data-arc span      22805 days (62.44 yr)  
   first obs. used      1953-09-06  
   last obs. used      2016-02-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54133  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-26 09:58:48  

Additional Information
 Earth MOID = .808571 au 
 Jupiter MOID = 2.08765 au 
 T_jup = 3.364 
[ 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 15.9 mag n/a MPO360071  

204966 (1990 QX3)          Discovered 1990-Aug-22 by Holt, H. E. at Palomar
Reference: 20090209/Numbers.arcLast Updated: 2009-02-11

[ show close-approach data ]
Alternate Designations
 1990 QX3 = 1953 RC2 = 2003 XE20 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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