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109471 (2001 QH218)
Classification: Main-belt Asteroid          SPK-ID: 2109471
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2055284398838327 8.2307e-08  
a 2.465979401601334 1.9831e-08 au
q 1.959150502404545 1.9604e-07 au
i 3.445175071662878 5.584e-06 deg
node 136.0157969924637 0.00012757 deg
peri 233.3290557458559 0.00012855 deg
M 286.3073848833826 2.6911e-05 deg
tp 2459290.036994218386
(2021-Mar-16.53699422)		 0.00010894 TDB
period 1414.433695339366
3.87		 1.7062e-05
4.671e-08		 d
yr
n .2545188234600315 3.0701e-09 deg/d
Q 2.972808300798124 2.3906e-08 au
   Orbit Determination Parameters
   # obs. used (total)      417  
   data-arc span      9445 days (25.86 yr)  
   first obs. used      1993-06-22  
   last obs. used      2019-05-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5616  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 09:31:25  

Additional Information
 Earth MOID = .960704 au 
 Jupiter MOID = 2.49121 au 
 T_jup = 3.455 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.4   n/a MPO233971  

109471 (2001 QH218)          Discovered 2001-Aug-23 by LONEOS at Anderson Mesa
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 2001 QH218 = 1999 BW28 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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