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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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2195754064578351 4.278e-08  
a 2.798653216477216 1.7119e-08 au
q 2.184137798934704 1.1552e-07 au
i 10.79924322286264 4.7535e-06 deg
node 137.4656377132949 2.1924e-05 deg
peri 185.4447165511529 2.5074e-05 deg
M 357.7476460989278 9.8054e-06 deg
tp 2459011.199320280089
(2020-Jun-10.69932028)
4.6583e-05 TDB
period 1710.102173108
4.68
1.569e-05
4.296e-08
d
yr
n .2105137375188076 1.9315e-09 deg/d
Q 3.413168634019728 2.0878e-08 au
  Orbit Determination Parameters
   # obs. used (total)      348  
   data-arc span      7032 days (19.25 yr)  
   first obs. used      2001-08-16  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54723  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 00:09:36  

Additional Information
 Earth MOID = 1.1719 au 
 Jupiter MOID = 1.92881 au 
 T_jup = 3.265 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457803.5 (2017-Feb-19.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2197814656594084 4.2645e-08  
q 2.182770394654029 1.1524e-07 au
tp 2457303.781717668508
(2015-Oct-08.28171767)
4.8811e-05 TDB
node 137.5146045756879 2.1947e-05 deg
peri 185.7863161161042 2.511e-05 deg
i 10.79473931120288 4.7519e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      348  
   data-arc span      7032 days (19.25 yr)  
   first obs. used      2001-08-16  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54723  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 00:09:36  

Additional Information
 Jupiter MOID = 1.92881 au 
 T_jup = 3.265 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.818590315268769E-15 -4.885608116501021E-15 2.05589587156445E-13 2.33649160793871E-15 6.534089713393703E-14 -4.893573694479787E-15
q -4.885608116501021E-15 1.328016708140586E-14 -7.739820193232069E-13 -5.863579070379776E-15 -2.173162602210706E-13 1.404682411974478E-14
tp 2.05589587156445E-13 -7.739820193232069E-13 2.382486446878199E-9 1.521517140797305E-11 6.085723634840912E-10 -1.640504015699325E-12
node 2.33649160793871E-15 -5.863579070379776E-15 1.521517140797305E-11 4.816868345613953E-10 -4.684528346284078E-10 2.254337633363607E-11
peri 6.534089713393703E-14 -2.173162602210706E-13 6.085723634840912E-10 -4.684528346284078E-10 6.305026999544626E-10 -2.249897085595676E-11
i -4.893573694479787E-15 1.404682411974478E-14 -1.640504015699325E-12 2.254337633363607E-11 -2.249897085595676E-11 2.258051667953878E-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 16.45   n/a E2021B55  
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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