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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 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2923292936372819 1.0273e-07  
a 2.567898277468567 2.5622e-08 AU
q 1.817226387883788 2.6694e-07 AU
i 5.432568662182296 1.157e-05 deg
node 338.0218024333192 0.00012531 deg
peri 4.505631204852754 0.00012863 deg
M 323.2730386980767 4.6556e-05 deg
tp 2457153.837241956756
(2015-May-11.33724196)
0.00019573 JED
period 1503.021354002992
4.12
2.2495e-05
6.159e-08
d
yr
n .2395175551173728 3.5848e-09 deg/d
Q 3.318570167053346 3.3112e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      146  
   data-arc span      22158 days (60.67 yr)  
   first obs. used      1953-09-06  
   last obs. used      2014-05-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5397  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-11 19:17:00  

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 (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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