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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2923292916071048 1.0233e-07  
a 2.567898278213764 2.5272e-08 AU
q 1.81722639362443 2.6564e-07 AU
i 5.432568759350616 1.1561e-05 deg
node 338.0218009935563 0.00012516 deg
peri 4.505633940506856 0.00012833 deg
M 323.2730367064069 4.5364e-05 deg
tp 2457153.837250338843
(2015-May-11.33725034)
0.0001907 JED
period 1503.021354657251
4.12
2.2188e-05
6.075e-08
d
yr
n .2395175550131119 3.5358e-09 deg/d
Q 3.318570162803097 3.266e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      163  
   data-arc span      22623 days (61.94 yr)  
   first obs. used      1953-09-06  
   last obs. used      2015-08-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5137  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 19:00:25  

Additional Information
 Earth MOID = .809716 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 15.8 mag n/a MPO294317  

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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