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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 ]

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Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1777962291438888 9.4888e-08  
a 2.37716691340525 1.362e-08 AU
q 1.954515600156179 2.2566e-07 AU
i 2.464331541166074 1.0971e-05 deg
node 347.6481920870982 0.00013263 deg
peri 330.2949397747678 0.00013449 deg
M 187.5570503750472 2.4087e-05 deg
tp 2457441.755176976789
(2016-Feb-23.25517698)
9.1708e-05 JED
period 1338.714422443625
3.67
1.1505e-05
3.15e-08
d
yr
n .268914709488879 2.3112e-09 deg/d
Q 2.79981822665432 1.6042e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      582  
   data-arc span      8596 days (23.53 yr)  
   first obs. used      1990-08-16  
   last obs. used      2014-02-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57375  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Mar-22 11:54:22  

Additional Information
 Earth MOID = .940712 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 (675)
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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