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109517 (2001 QR238)
Classification: Main-belt Asteroid          SPK-ID: 2109517
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1392960917331759 3.9534e-08  
a 3.094907263139426 2.1873e-08 au
q 2.663798777107484 1.2414e-07 au
i 10.27452832440313 4.9914e-06 deg
node 350.8137782379148 2.2707e-05 deg
peri 307.1516025643087 2.7956e-05 deg
M 206.9971602532244 1.671e-05 deg
tp 2459845.714381090468
(2022-Sep-23.21438109)
9.4499e-05 TDB
period 1988.702809020778
5.44
2.1083e-05
5.772e-08
d
yr
n .1810225230069752 1.9191e-09 deg/d
Q 3.526015749171367 2.492e-08 au
  Orbit Determination Parameters
   # obs. used (total)      905  
   data-arc span      6812 days (18.65 yr)  
   first obs. used      2001-08-24  
   last obs. used      2020-04-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56453  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 19:05:28  

Additional Information
 Earth MOID = 1.66404 au 
 Jupiter MOID = 1.82813 au 
 T_jup = 3.184 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457277.5 (2015-Sep-12.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1385047013337296 3.9494e-08  
q 2.667725820733699 1.234e-07 au
tp 2457853.701376104294
(2017-Apr-10.20137610)
9.1317e-05 TDB
node 350.8504702559991 2.2697e-05 deg
peri 306.4647798120436 2.8009e-05 deg
i 10.27536055303668 4.9912e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      905  
   data-arc span      6812 days (18.65 yr)  
   first obs. used      2001-08-24  
   last obs. used      2020-04-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56453  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 19:05:28  

Additional Information
 Jupiter MOID = 1.82813 au 
 T_jup = 3.184 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.559752598418662E-15 -4.816317509202767E-15 8.056303756489846E-13 5.610724020272061E-17 1.306458973417468E-13 2.078162850456189E-15
q -4.816317509202767E-15 1.52273697346559E-14 -2.347685460757918E-12 -7.223842519404125E-16 -4.047631557868002E-13 -7.421194054445833E-15
tp 8.056303756489846E-13 -2.347685460757918E-12 8.338711619419858E-9 -8.758118705307553E-12 1.512520426179066E-9 -1.718746459905489E-12
node 5.610724020272061E-17 -7.223842519404125E-16 -8.758118705307553E-12 5.15159233802734E-10 -5.081151637367827E-10 -5.125356052483896E-12
peri 1.306458973417468E-13 -4.047631557868002E-13 1.512520426179066E-9 -5.081151637367827E-10 7.844807415315052E-10 4.673021318773691E-12
i 2.078162850456189E-15 -7.421194054445833E-15 -1.718746459905489E-12 -5.125356052483896E-12 4.673021318773691E-12 2.491255501393256E-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 14.4   n/a MPO341325  
diameter diameter 5.189 km 0.767 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.137   0.048 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

109517 (2001 QR238)          Discovered 2001-Aug-24 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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