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91813 (1999 TL254)
Classification: Main-belt Asteroid          SPK-ID: 2091813
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1092301144411866 4.3945e-08  
a 2.994319595138527 2.1469e-08 au
q 2.667249723088058 1.3905e-07 au
i 12.1084791883353 5.4007e-06 deg
node 128.2591884068358 1.7905e-05 deg
peri 242.771187273364 2.8863e-05 deg
M 4.555821475739779 2.318e-05 deg
tp 2458976.549760968775
(2020-May-07.04976097)
0.00012181 TDB
period 1892.542562774766
5.18
2.0354e-05
5.573e-08
d
yr
n .1902202925741248 2.0458e-09 deg/d
Q 3.321389467188996 2.3814e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1017  
   data-arc span      10489 days (28.72 yr)  
   first obs. used      1991-02-13  
   last obs. used      2019-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51993  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:37:27  

Additional Information
 Earth MOID = 1.69081 au 
 Jupiter MOID = 2.17537 au 
 T_jup = 3.212 
[ 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 14.0   n/a MPO449564  

91813 (1999 TL254)          Discovered 1999-Oct-08 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 TL254 = 2001 AA16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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