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JPL Small-Body Database Browser
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173785 (2001 SQ82)
Classification: Main-belt Asteroid          SPK-ID: 2173785
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01334334060403506 4.1755e-08  
a 2.725636661180873 2.1741e-08 au
q 2.689267562847892 1.0752e-07 au
i 4.548356624747722 5.4227e-06 deg
node 305.9245315020949 6.1709e-05 deg
peri 303.0543521717436 0.00025679 deg
M 61.37647376286608 0.00024944 deg
tp 2458320.279565143418
(2018-Jul-20.77956514)
0.0011399 TDB
period 1643.616036628737
4.50
1.9665e-05
5.384e-08
d
yr
n .219029257428277 2.6206e-09 deg/d
Q 2.762005759513855 2.2031e-08 au
  Orbit Determination Parameters
   # obs. used (total)      544  
   data-arc span      7606 days (20.82 yr)  
   first obs. used      1999-01-18  
   last obs. used      2019-11-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56195  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 13:03:10  

Additional Information
 Earth MOID = 1.67668 au 
 Jupiter MOID = 2.23791 au 
 T_jup = 3.352 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457294.5 (2015-Sep-29.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01379947589452155 4.0688e-08  
q 2.688677161179556 1.0607e-07 au
tp 2456709.921513882328
(2014-Feb-21.42151388)
0.0011263 TDB
node 306.0742451872522 6.1734e-05 deg
peri 310.4160747326283 0.00025238 deg
i 4.54665761122684 5.4238e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      544  
   data-arc span      7606 days (20.82 yr)  
   first obs. used      1999-01-18  
   last obs. used      2019-11-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56195  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 13:03:10  

Additional Information
 Jupiter MOID = 2.23791 au 
 T_jup = 3.352 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.655546486674444E-15 -4.235068685347296E-15 -3.118991522124822E-12 8.672497596996528E-16 -6.731351046399453E-13 5.557767481099188E-16
q -4.235068685347296E-15 1.125161086150016E-14 -9.543342672896274E-13 -2.099509181657758E-15 -1.971932003292613E-13 -4.150842278062612E-16
tp -3.118991522124822E-12 -9.543342672896274E-13 1.268575313916688E-6 2.743705155637194E-10 2.7565239627139E-7 -2.394063228124716E-11
node 8.672497596996528E-16 -2.099509181657758E-15 2.743705155637194E-10 3.811039137924907E-9 -3.738941948910917E-9 8.596140213684744E-11
peri -6.731351046399453E-13 -1.971932003292613E-13 2.7565239627139E-7 -3.738941948910917E-9 6.369784554951735E-8 -9.086080318483531E-11
i 5.557767481099188E-16 -4.150842278062612E-16 -2.394063228124716E-11 8.596140213684744E-11 -9.086080318483531E-11 2.941776550833688E-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 15.5   n/a MPO417937  
diameter diameter 4.644 km 0.129 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.057   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

173785 (2001 SQ82)          Discovered 2001-Sep-20 by LINEAR at Socorro
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

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