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469319 (1999 TR254)
Classification: Main-belt Asteroid          SPK-ID: 2469319
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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3441646367891433 6.6183e-08  
a 2.649273180685719 1.569e-08 au
q 1.7374870386998 1.7893e-07 au
i 13.38559133197876 9.7491e-06 deg
node 160.7282173403717 3.3218e-05 deg
peri 225.85763222 3.9916e-05 deg
M 285.516657607829 1.7129e-05 deg
tp 2459326.370613126259
(2021-Apr-21.87061313)
7.7122e-05 TDB
period 1575.028952215553
4.31
1.3992e-05
3.831e-08
d
yr
n .2285672269665883 2.0305e-09 deg/d
Q 3.561059322671638 2.109e-08 au
  Orbit Determination Parameters
   # obs. used (total)      88  
   data-arc span      6749 days (18.48 yr)  
   first obs. used      1999-09-14  
   last obs. used      2018-03-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .70114  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 13:35:49  

Additional Information
 Earth MOID = .767223 au 
 Jupiter MOID = 1.98945 au 
 T_jup = 3.268 
[ 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 17.2   n/a MPO437768  

469319 (1999 TR254)          Discovered 1999-Sep-14 by LINEAR at Socorro
Reference: Last Updated: 2016-08-22

Alternate Designations
 1999 TR254 = 2012 TM320 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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