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JPL Small-Body Database Browser
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109223 (2001 QW87)
Classification: Main-belt Asteroid          SPK-ID: 2109223
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03890311065072551 4.7929e-08  
a 2.486773393588233 1.5704e-08 au
q 2.39003017309419 1.1715e-07 au
i .6822159364906785 5.0012e-06 deg
node 322.4421514805769 0.00038487 deg
peri 28.29499399694089 0.00038899 deg
M 160.2370054652628 5.6504e-05 deg
tp 2457962.951740455822
(2017-Jul-28.45174046)
0.00022463 TDB
period 1432.36184905902
3.92
1.3568e-05
3.715e-08
d
yr
n .2513331392039654 2.3808e-09 deg/d
Q 2.583516614082277 1.6315e-08 au
  Orbit Determination Parameters
   # obs. used (total)      442  
   data-arc span      8396 days (22.99 yr)  
   first obs. used      1996-03-16  
   last obs. used      2019-03-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54709  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 13:12:53  

Additional Information
 Earth MOID = 1.38232 au 
 Jupiter MOID = 2.55732 au 
 T_jup = 3.474 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.4   n/a MPO436525  

109223 (2001 QW87)          Discovered 2001-Aug-22 by Needville at Needville
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 2001 QW87 = 2004 HT16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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