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243948 (2001 QD117)
Classification: Main-belt Asteroid          SPK-ID: 2243948
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1607939794268581 5.9825e-08  
a 2.767361156577682 1.594e-08 au
q 2.322386143700244 1.7016e-07 au
i 11.89018940001272 5.9937e-06 deg
node 328.7359422935413 2.0658e-05 deg
peri 345.5899349163382 2.5151e-05 deg
M 58.62364126700385 1.37e-05 deg
tp 2458726.678542773658
(2019-Aug-31.17854277)
6.3494e-05 TDB
period 1681.501224949774
4.60
1.4528e-05
3.978e-08
d
yr
n .2140944024651264 1.8498e-09 deg/d
Q 3.21233616945512 1.8503e-08 au
  Orbit Determination Parameters
   # obs. used (total)      596  
   data-arc span      7014 days (19.20 yr)  
   first obs. used      2001-08-17  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50689  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 00:53:22  

Additional Information
 Earth MOID = 1.31095 au 
 Jupiter MOID = 2.11005 au 
 T_jup = 3.289 
[ 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 15.3   n/a MPO437138  
diameter diameter 2.764 km 0.691 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.211   0.111 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

243948 (2001 QD117)          Discovered 2001-Aug-17 by LINEAR at Socorro
Reference: 20100726/Numbers.arcLast Updated: 2010-07-28
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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