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JPL Small-Body Database Browser
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243961 (2001 QL229)
Classification: Main-belt Asteroid          SPK-ID: 2243961
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2193535854775145 9.3933e-08  
a 2.785853378745 3.0215e-08 au
q 2.174766451502636 2.6265e-07 au
i 6.777921530543279 7.4435e-06 deg
node 298.0284095318601 9.837e-05 deg
peri 22.45233695447879 0.00010151 deg
M 302.4176314240099 2.4778e-05 deg
tp 2458872.158209787503
(2020-Jan-23.65820979)
0.00011782 TDB
period 1698.383688306267
4.65
2.7631e-05
7.565e-08
d
yr
n .2119662373577164 3.4484e-09 deg/d
Q 3.396940305987364 3.6843e-08 au
  Orbit Determination Parameters
   # obs. used (total)      172  
   data-arc span      6051 days (16.57 yr)  
   first obs. used      2001-08-24  
   last obs. used      2018-03-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59185  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 09:35:05  

Additional Information
 Earth MOID = 1.16266 au 
 Jupiter MOID = 1.92735 au 
 T_jup = 3.286 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456876.5 (2014-Aug-07.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2195641479412765 9.4413e-08  
q 2.172772207187309 2.6401e-07 au
tp 2457177.380769298056
(2015-Jun-03.88076930)
0.00011475 TDB
node 298.0847637265515 9.8412e-05 deg
peri 22.85985016987531 0.00010154 deg
i 6.777512474276384 7.4483e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      172  
   data-arc span      6051 days (16.57 yr)  
   first obs. used      2001-08-24  
   last obs. used      2018-03-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59185  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 09:35:05  

Additional Information
 Jupiter MOID = 1.92735 au 
 T_jup = 3.286 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.913743533614694E-15 -2.482365719028948E-14 6.993822134422472E-12 2.931998206952728E-13 1.283891653343427E-12 -2.046072175301113E-14
q -2.482365719028948E-14 6.969874426577288E-14 -1.958206535899638E-11 -8.088095122417533E-13 -3.641823468024156E-12 5.978928094266492E-14
tp 6.993822134422472E-12 -1.958206535899638E-11 1.316654730253103E-8 3.230162366428679E-10 3.071673539885082E-9 -2.321275096636852E-11
node 2.931998206952728E-13 -8.088095122417533E-13 3.230162366428679E-10 9.684989646591676E-9 -9.539955076678113E-9 4.137167650532253E-10
peri 1.283891653343427E-12 -3.641823468024156E-12 3.071673539885082E-9 -9.539955076678113E-9 1.031002146419613E-8 -4.166808572376863E-10
i -2.046072175301113E-14 5.978928094266492E-14 -2.321275096636852E-11 4.137167650532253E-10 -4.166808572376863E-10 5.54777996967165E-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 16.6   n/a MPO440241  
diameter diameter 2.856 km 0.397 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.065   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

243961 (2001 QL229)          Discovered 2001-Aug-24 by LONEOS at Anderson Mesa
Reference: 20100726/Numbers.arcLast Updated: 2010-07-28

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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