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109221 (2001 QM87)
Classification: Main-belt Asteroid          SPK-ID: 2109221
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1205783288175538 5.2759e-08  
a 2.6066146367944 1.4587e-08 au
q 2.292313400018356 1.3484e-07 au
i 12.77951726267624 4.4314e-06 deg
node 238.606338029677 2.0084e-05 deg
peri 91.56617513310198 2.8813e-05 deg
M 179.4602098480037 2.3438e-05 deg
tp 2458234.234377833990
(2018-Apr-25.73437783)
9.6951e-05 TDB
period 1537.140874923769
4.21
1.2903e-05
3.533e-08
d
yr
n .2342010455078513 1.966e-09 deg/d
Q 2.920915873570443 1.6346e-08 au
  Orbit Determination Parameters
   # obs. used (total)      632  
   data-arc span      7297 days (19.98 yr)  
   first obs. used      2000-05-01  
   last obs. used      2020-04-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5772  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 19:02:02  

Additional Information
 Earth MOID = 1.32534 au 
 Jupiter MOID = 2.42995 au 
 T_jup = 3.367 
[ 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 15.5   n/a MPO502754  

109221 (2001 QM87)          Discovered 2001-Aug-17 by NEAT at Palomar
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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