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91731 (1999 TJ164)
Classification: Main-belt Asteroid          SPK-ID: 2091731
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02565277385734209 4.4873e-08  
a 3.139213828596442 2.5257e-08 au
q 3.058684286161617 1.4426e-07 au
i 10.57943001550098 5.2576e-06 deg
node 220.729040804679 2.0819e-05 deg
peri 331.7207050630396 9.1832e-05 deg
M 89.54101187615676 8.8038e-05 deg
tp 2458495.200030247522
(2019-Jan-11.70003025)
0.00049913 TDB
period 2031.56056983684
5.56
2.4518e-05
6.713e-08
d
yr
n .1772036755118321 2.1386e-09 deg/d
Q 3.219743371031268 2.5905e-08 au
  Orbit Determination Parameters
   # obs. used (total)      781  
   data-arc span      21463 days (58.76 yr)  
   first obs. used      1960-09-28  
   last obs. used      2019-07-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54853  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:36:19  

Additional Information
 Earth MOID = 2.05813 au 
 Jupiter MOID = 1.76327 au 
 T_jup = 3.184 
[ show covariance matrix ]

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 14.5   n/a MPO259879  

91731 (1999 TJ164)          Discovered 1999-Oct-10 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 TJ164 = 1997 JU14 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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