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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 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2923409512403709 1.3002e-07  
a 2.567547867577205 1.9744e-08 AU
q 1.816948481614499 3.3324e-07 AU
i 5.432599460588402 1.5052e-05 deg
node 338.0260622713768 0.0001287 deg
peri 4.5289244929505 0.00013104 deg
M 275.3408540676605 4.3265e-05 deg
tp 2457153.884610467544
(2015-May-11.38461047)
0.00018374 JED
period 1502.713715893027
4.11
1.7334e-05
4.746e-08
d
yr
n .2395665895589837 2.7634e-09 deg/d
Q 3.318147253539911 2.5516e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      137  
   data-arc span      22126 days (60.58 yr)  
   first obs. used      1953-09-06  
   last obs. used      2014-04-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .60518  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 16:49:22  

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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