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243945 (2001 QU39)
Classification: Main-belt Asteroid          SPK-ID: 2243945
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2195754378724847 5.5577e-08  
a 2.798653200306153 2.8704e-08 au
q 2.184137698395699 1.6457e-07 au
i 10.79924942580056 5.7937e-06 deg
node 137.4656019158896 2.971e-05 deg
peri 185.4447493049723 3.2298e-05 deg
M 357.7476532622013 1.4688e-05 deg
tp 2459011.199286159773
(2020-Jun-10.69928616)
6.9872e-05 TDB
period 1710.102158286137
4.68
2.6309e-05
7.203e-08
d
yr
n .2105137393433803 3.2387e-09 deg/d
Q 3.413168702216608 3.5007e-08 au
  Orbit Determination Parameters
   # obs. used (total)      213  
   data-arc span      6526 days (17.87 yr)  
   first obs. used      2001-08-16  
   last obs. used      2019-06-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59786  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 09:26:27  

Additional Information
 Earth MOID = 1.1719 au 
 Jupiter MOID = 1.92881 au 
 T_jup = 3.265 
[ 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 16.3   n/a MPO437138  
diameter diameter 3.210 km 0.932 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.057   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

243945 (2001 QU39)          Discovered 2001-Aug-16 by LINEAR at Socorro
Reference: 20100726/Numbers.arcLast Updated: 2010-07-28

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Alternate Designations
 2001 QU39 = 2006 QA111 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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