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52287 (1990 QP4)
Classification: Main-belt Asteroid          SPK-ID: 2052287
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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1782352480938145 8.619e-08  
a 2.376158305058899 1.497e-08 AU
q 1.952643140046548 2.0565e-07 AU
i 2.464938174002331 1.0049e-05 deg
node 347.6453766212978 0.00012336 deg
peri 330.3722851324252 0.00012497 deg
M 241.2819014941945 2.1742e-05 deg
tp 2457441.690258348357
(2016-Feb-23.19025835)
8.2303e-05 JED
period 1337.862507944748
3.66
1.2643e-05
3.461e-08
d
yr
n .269085947070181 2.5428e-09 deg/d
Q 2.79967347007125 1.7638e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      597  
   data-arc span      8988 days (24.61 yr)  
   first obs. used      1990-08-16  
   last obs. used      2015-03-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53755  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 18:22:26  

Additional Information
 Earth MOID = .940745 AU 
 T_jup = 3.518 
[ 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 15.4 mag n/a MPO247752  

52287 (1990 QP4)          Discovered 1990-Aug-23 by Holt, H. E. at Palomar
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1990 QP4 = 1990 QY9 = 2000 GE118 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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