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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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08120165448823644 3.8003e-08  
a 3.069721266908231 2.0762e-08 au
q 2.820454821217557 1.2471e-07 au
i 9.600526759710231 5.3099e-06 deg
node 186.2108480685285 1.9794e-05 deg
peri 235.1842010127317 3.9259e-05 deg
M 285.5958042302826 3.2234e-05 deg
tp 2459406.514708997122
(2021-Jul-11.01470900)
0.00017573 TDB
period 1964.476515428627
5.38
1.993e-05
5.457e-08
d
yr
n .1832549267820858 1.8592e-09 deg/d
Q 3.318987712598904 2.2448e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1058  
   data-arc span      7694 days (21.07 yr)  
   first obs. used      1999-10-08  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51112  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:38:25  

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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