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181712 (1993 TQ16)
Classification: Main-belt Asteroid          SPK-ID: 2181712
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2418283675141365 7.1759e-08  
a 2.5816419969599 2.3432e-08 au
q 1.957327727329152 1.9324e-07 au
i 18.7109868725311 6.992e-06 deg
node 22.62679640112241 1.2103e-05 deg
peri 324.710690774859 1.8179e-05 deg
M 215.9881217144197 1.5004e-05 deg
tp 2459806.591602567426
(2022-Aug-15.09160257)
6.2111e-05 TDB
period 1515.104028374586
4.15
2.0628e-05
5.648e-08
d
yr
n .2376074469198068 3.235e-09 deg/d
Q 3.205956266590647 2.9099e-08 au
  Orbit Determination Parameters
   # obs. used (total)      616  
   data-arc span      10066 days (27.56 yr)  
   first obs. used      1993-10-09  
   last obs. used      2021-05-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50499  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:09:44  

Additional Information
 Earth MOID = .977414 au 
 Jupiter MOID = 2.31483 au 
 T_jup = 3.310 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457994.5 (2017-Aug-29.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2411107086750671 7.1795e-08  
q 1.959757507459526 1.9306e-07 au
tp 2458290.947941573929
(2018-Jun-21.44794157)
6.6829e-05 TDB
node 22.65208393813619 1.2102e-05 deg
peri 324.6527813546287 1.8204e-05 deg
i 18.70878750532612 6.9913e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      616  
   data-arc span      10066 days (27.56 yr)  
   first obs. used      1993-10-09  
   last obs. used      2021-05-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50499  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:09:44  

Additional Information
 Jupiter MOID = 2.31483 au 
 T_jup = 3.310 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.154475412869198E-15 -1.381181846010683E-14 3.765725063264117E-12 5.258657910970515E-14 7.183870663569886E-13 -1.467873708417768E-14
q -1.381181846010683E-14 3.727147075672279E-14 -1.013897663009746E-11 -1.424747550704738E-13 -1.944064904576341E-12 4.051184361296932E-14
tp 3.765725063264117E-12 -1.013897663009746E-11 4.466101372540548E-9 4.323885201793913E-11 9.163540188953154E-10 -1.955018483558198E-11
node 5.258657910970515E-14 -1.424747550704738E-13 4.323885201793913E-11 1.464481311875074E-10 -1.291940190764357E-10 3.782543919177937E-12
peri 7.183870663569886E-13 -1.944064904576341E-12 9.163540188953154E-10 -1.291940190764357E-10 3.313724206212389E-10 -7.986912383685721E-12
i -1.467873708417768E-14 4.051184361296932E-14 -1.955018483558198E-11 3.782543919177937E-12 -7.986912383685721E-12 4.887780440622743E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.37   n/a MPCxxxxx  
diameter diameter 3.953 km 0.862 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
geometric albedo albedo 0.094   0.079 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

181712 (1993 TQ16)          Discovered 1993-Oct-09 by Elst, E. W. at La Silla
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

Alternate Designations
 1993 TQ16 = 2000 FN55 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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