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74829 (1999 TR21)
Classification: Main-belt Asteroid          SPK-ID: 2074829
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09127691934848353 4.7956e-08  
a 2.354964095635196 1.1587e-08 au
q 2.140010227809328 1.118e-07 au
i 7.52990937914178 5.0214e-06 deg
node 55.77322010609402 3.9454e-05 deg
peri 3.210559495313231 5.0766e-05 deg
M 241.694435744035 3.141e-05 deg
tp 2459434.287998747490
(2021-Aug-07.78799875)
0.00011563 TDB
period 1320.002829378524
3.61
9.7422e-06
2.667e-08
d
yr
n .2727266881461862 2.0128e-09 deg/d
Q 2.569917963461064 1.2645e-08 au
  Orbit Determination Parameters
   # obs. used (total)      512  
   data-arc span      9180 days (25.13 yr)  
   first obs. used      1994-04-15  
   last obs. used      2019-06-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60382  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:22:51  

Additional Information
 Earth MOID = 1.15225 au 
 Jupiter MOID = 2.70124 au 
 T_jup = 3.538 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.3   n/a MPO432301  

74829 (1999 TR21)          Discovered 1999-Oct-02 by Spacewatch at Kitt Peak
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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