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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 ]

[ show orbit diagram ]
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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457093.5 (2015-Mar-12.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2196602016203624 5.5439e-08  
q 2.183332929562197 1.639e-07 au
tp 2457304.103212936732
(2015-Oct-08.60321294)
5.8368e-05 TDB
node 137.5209561232638 2.9739e-05 deg
peri 185.896895789352 3.2348e-05 deg
i 10.79485151146036 5.7908e-06 deg
  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
 Jupiter MOID = 1.92881 au 
 T_jup = 3.265 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.073479026536315E-15 -9.013519172573046E-15 -9.138955448705434E-13 -3.492591254638701E-14 -6.052903885981861E-14 -4.940134059520471E-15
q -9.013519172573046E-15 2.686313129121213E-14 2.917042429634656E-12 9.995946293147237E-14 2.152275496145661E-13 1.754572220073515E-14
tp -9.138955448705434E-13 2.917042429634656E-12 3.406840230517565E-9 9.339554818220325E-12 7.646200200859776E-10 6.660774869997239E-12
node -3.492591254638701E-14 9.995946293147237E-14 9.339554818220325E-12 8.843973865621925E-10 -8.666763089979915E-10 -4.034875183953757E-11
peri -6.052903885981861E-14 2.152275496145661E-13 7.646200200859776E-10 -8.666763089979915E-10 1.046378476703032E-9 4.09059309573701E-11
i -4.940134059520471E-15 1.754572220073515E-14 6.660774869997239E-12 -4.034875183953757E-11 4.09059309573701E-11 3.353380416535934E-11

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

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