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91809 (1999 TG248)
Classification: Main-belt Asteroid          SPK-ID: 2091809
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08120165220961353 3.7874e-08  
a 3.069721265191307 2.0612e-08 au
q 2.820454826634788 1.245e-07 au
i 9.600526705516039 5.3086e-06 deg
node 186.2108502295754 1.9395e-05 deg
peri 235.1841992742858 3.909e-05 deg
M 285.5958043339264 3.2231e-05 deg
tp 2459406.514708090918
(2021-Jul-11.01470809)
0.00017571 TDB
period 1964.476513780503
5.38
1.9786e-05
5.417e-08
d
yr
n .18325492693583 1.8458e-09 deg/d
Q 3.318987703747826 2.2286e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1074  
   data-arc span      7707 days (21.10 yr)  
   first obs. used      1999-10-08  
   last obs. used      2020-11-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50898  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 04:21:05  

Additional Information
 Earth MOID = 1.84524 au 
 Jupiter MOID = 2.00963 au 
 T_jup = 3.205 
[ 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 MPO432455  

91809 (1999 TG248)          Discovered 1999-Oct-08 by CSS at Catalina
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 TG248 = 2001 FT162 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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