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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2192410609258402 4.2677e-08  
a 2.797974109328104 1.6978e-08 au
q 2.184543297155978 1.1507e-07 au
i 10.79989035534811 4.7134e-06 deg
node 137.466453921702 2.1919e-05 deg
peri 185.4729278590446 2.5076e-05 deg
M 81.12984944262298 9.8839e-06 deg
tp 2459011.250455972188
(2020-Jun-10.75045597)
4.6643e-05 TDB
period 1709.479763648484
4.68
1.556e-05
4.26e-08
d
yr
n .2105903840778229 1.9168e-09 deg/d
Q 3.41140492150023 2.0701e-08 au
  Orbit Determination Parameters
   # obs. used (total)      352  
   data-arc span      7084 days (19.39 yr)  
   first obs. used      2001-08-16  
   last obs. used      2021-01-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55277  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 11:38:36  

Additional Information
 Earth MOID = 1.17162 au 
 Jupiter MOID = 1.93032 au 
 T_jup = 3.265 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457834.5 (2017-Mar-22.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .219796300053585 4.2507e-08  
q 2.182650452439296 1.1478e-07 au
tp 2457303.761795247210
(2015-Oct-08.26179525)
4.8801e-05 TDB
node 137.5140585114147 2.1943e-05 deg
peri 185.7776009937648 2.5104e-05 deg
i 10.79484465312504 4.7115e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      352  
   data-arc span      7084 days (19.39 yr)  
   first obs. used      2001-08-16  
   last obs. used      2021-01-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55277  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 11:38:36  

Additional Information
 Jupiter MOID = 1.93032 au 
 T_jup = 3.265 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.806809953405449E-15 -4.850312613751961E-15 2.035272617180308E-13 2.325773505623205E-15 6.419573478957706E-14 -4.852564415132187E-15
q -4.850312613751961E-15 1.317453542808819E-14 -7.677616193197338E-13 -5.826257155509499E-15 -2.138887393923591E-13 1.392537365899389E-14
tp 2.035272617180308E-13 -7.677616193197338E-13 2.381515438160503E-9 1.524031693868538E-11 6.082565686004667E-10 -1.687210348878033E-12
node 2.325773505623205E-15 -5.826257155509499E-15 1.524031693868538E-11 4.814976221859413E-10 -4.68258415419677E-10 2.271543244227264E-11
peri 6.419573478957706E-14 -2.138887393923591E-13 6.082565686004667E-10 -4.68258415419677E-10 6.301876421757637E-10 -2.268068226666722E-11
i -4.852564415132187E-15 1.392537365899389E-14 -1.687210348878033E-12 2.271543244227264E-11 -2.268068226666722E-11 2.219804476992612E-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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