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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 ]

[ show orbit diagram ]
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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457528.5 (2016-May-20.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0815353741788951 3.8893e-08  
q 2.819622611829798 1.276e-07 au
tp 2457419.538603459987
(2016-Feb-01.03860346)
0.00017389 TDB
node 186.5060610104661 1.9307e-05 deg
peri 231.3550224585975 3.8676e-05 deg
i 9.621851924943361 5.3209e-06 deg
  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
 Jupiter MOID = 2.00963 au 
 T_jup = 3.205 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.512680323626709E-15 -4.917084035978309E-15 -2.357491719238772E-12 1.729042291229008E-15 -4.227313136730437E-13 -1.756250184068973E-15
q -4.917084035978309E-15 1.628213437196994E-14 6.983095944706836E-12 -6.366812775134017E-15 1.24609780622291E-12 6.878713607182953E-15
tp -2.357491719238772E-12 6.983095944706836E-12 3.023722309275374E-8 -1.044724397745517E-11 5.834460483897258E-9 6.037233686704189E-12
node 1.729042291229008E-15 -6.366812775134017E-15 -1.044724397745517E-11 3.727535240303798E-10 -3.689517577855777E-10 -1.732187842043345E-12
peri -4.227313136730437E-13 1.24609780622291E-12 5.834460483897258E-9 -3.689517577855777E-10 1.495828530835676E-9 2.745175196125843E-12
i -1.756250184068973E-15 6.878713607182953E-15 6.037233686704189E-12 -1.732187842043345E-12 2.745175196125843E-12 2.831195384310544E-11

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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