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102345 (1999 TQ121)
Classification: Main-belt Asteroid          SPK-ID: 2102345
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1594175189113212 3.7038e-08  
a 2.314977898594598 8.1519e-09 au
q 1.945929865666103 8.8641e-08 au
i 7.905476255100971 4.9641e-06 deg
node 182.0145454053743 2.2681e-05 deg
peri 259.8830808622973 2.8917e-05 deg
M 315.2210064409282 1.9665e-05 deg
tp 2459360.525991985479
(2021-May-26.02599199)
7.0654e-05 TDB
period 1286.52639409537
3.52
6.7955e-06
1.861e-08
d
yr
n .2798232524822288 1.478e-09 deg/d
Q 2.684025931523093 9.4515e-09 au
  Orbit Determination Parameters
   # obs. used (total)      791  
   data-arc span      7799 days (21.35 yr)  
   first obs. used      1999-09-05  
   last obs. used      2021-01-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54662  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:31:10  

Additional Information
 Earth MOID = .97931 au 
 Jupiter MOID = 2.57964 au 
 T_jup = 3.552 
[ 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 16.02   n/a E2021B55  

102345 (1999 TQ121)          Discovered 1999-Oct-04 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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