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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 ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03894612506462257 3.8524e-08  
a 2.487205846074819 1.272e-08 au
q 2.390338816132129 9.9233e-08 au
i .6822376433736002 4.0215e-06 deg
node 322.4402407693437 0.00037473 deg
peri 27.79071748361156 0.00037881 deg
M 261.2983229135809 5.6059e-05 deg
tp 2459393.314990515327
(2021-Jun-27.81499052)
0.00022345 TDB
period 1432.735499131408
3.92
1.0991e-05
3.009e-08
d
yr
n .2512675928098725 1.9275e-09 deg/d
Q 2.58407287601751 1.3215e-08 au
  Orbit Determination Parameters
   # obs. used (total)      489  
   data-arc span      8866 days (24.27 yr)  
   first obs. used      1996-03-16  
   last obs. used      2020-06-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53861  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:13:20  

Additional Information
 Earth MOID = 1.38342 au 
 Jupiter MOID = 2.55563 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 16.5   n/a MPO469115  

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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