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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2923409666962134 1.3807e-07  
a 2.567547868902515 2.0182e-08 AU
q 1.816948442868751 3.5293e-07 AU
i 5.432602142153756 1.5854e-05 deg
node 338.0260509202598 0.00013029 deg
peri 4.528935883768694 0.00013253 deg
M 275.340852181888 4.3728e-05 deg
tp 2457153.884618612759
(2015-May-11.38461861)
0.00018577 JED
period 1502.713717056527
4.11
1.7718e-05
4.851e-08
d
yr
n .2395665893734955 2.8247e-09 deg/d
Q 3.318147294936279 2.6082e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      135  
   data-arc span      21768 days (59.60 yr)  
   first obs. used      1953-09-06  
   last obs. used      2013-04-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .60819  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-08 10:27:47  

Additional Information
 Earth MOID = .807724 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 15.7 mag n/a MPO260326  

204966 (1990 QX3)          Discovered 1990-Aug-22 by Holt, H. E. at Palomar (675)
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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