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109481 (2001 QR222)
Classification: Outer Main-belt Asteroid          SPK-ID: 2109481
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1093264323504384 4.6725e-08  
a 3.210923446372385 3.3092e-08 au
q 2.859884641430118 1.475e-07 au
i 8.95806694734431 5.8926e-06 deg
node 208.0021236798787 3.2613e-05 deg
peri 30.5284527054251 4.1871e-05 deg
M 171.7195910528457 2.7099e-05 deg
tp 2457998.054665898173
(2017-Sep-01.55466590)
0.00015565 TDB
period 2101.567550120702
5.75
3.2489e-05
8.895e-08
d
yr
n .171300703600664 2.6482e-09 deg/d
Q 3.561962251314652 3.671e-08 au
  Orbit Determination Parameters
   # obs. used (total)      467  
   data-arc span      8513 days (23.31 yr)  
   first obs. used      1996-10-06  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60141  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 03:26:36  

Additional Information
 Earth MOID = 1.85288 au 
 Jupiter MOID = 1.44108 au 
 T_jup = 3.163 
[ 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 14.7   n/a MPO412772  
diameter diameter 6.127 km 0.376 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.068   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

109481 (2001 QR222)          Discovered 2001-Aug-24 by LONEOS at Anderson Mesa
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 2001 QR222 = 2000 JD86 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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