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91806 (1999 TJ244)
Classification: Main-belt Asteroid          SPK-ID: 2091806
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1437722345274393 5.9412e-08  
a 3.111966111175626 2.2172e-08 au
q 2.66455178959824 1.7667e-07 au
i 18.16755482798324 4.7668e-06 deg
node 187.0937346963658 1.3285e-05 deg
peri 352.0365800711364 1.9607e-05 deg
M 104.2449829404422 1.6588e-05 deg
tp 2458419.864777966614
(2018-Oct-28.36477797)
9.0618e-05 TDB
period 2005.167769574508
5.49
2.1429e-05
5.867e-08
d
yr
n .1795360994039871 1.9187e-09 deg/d
Q 3.559380432753011 2.5359e-08 au
  Orbit Determination Parameters
   # obs. used (total)      630  
   data-arc span      7682 days (21.03 yr)  
   first obs. used      1999-10-07  
   last obs. used      2020-10-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50728  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:38:26  

Additional Information
 Earth MOID = 1.66848 au 
 Jupiter MOID = 1.40526 au 
 T_jup = 3.126 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457656.5 (2016-Sep-25.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1424626061993856 5.9472e-08  
q 2.667089457359661 1.7606e-07 au
tp 2458417.385204886303
(2018-Oct-25.88520489)
9.1896e-05 TDB
node 187.2534755414249 1.3278e-05 deg
peri 351.3806009208663 1.9754e-05 deg
i 18.17513802001957 4.7682e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      630  
   data-arc span      7682 days (21.03 yr)  
   first obs. used      1999-10-07  
   last obs. used      2020-10-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50728  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:38:26  

Additional Information
 Jupiter MOID = 1.40526 au 
 T_jup = 3.126 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.536896522547589E-15 -1.042459084752057E-14 2.032799815989313E-12 2.169431054349221E-14 1.370874789149436E-13 1.428869110966395E-15
q -1.042459084752057E-14 3.099607324724222E-14 -5.821181532703751E-12 -6.629352090773729E-14 -3.957173376516587E-13 -3.400321506824089E-15
tp 2.032799815989313E-12 -5.821181532703751E-12 8.444785025746542E-9 9.875679302458773E-12 1.328743038910231E-9 -1.093006573942082E-11
node 2.169431054349221E-14 -6.629352090773729E-14 9.875679302458773E-12 1.762927104582073E-10 -1.666401789775461E-10 -2.329083130830453E-12
peri 1.370874789149436E-13 -3.957173376516587E-13 1.328743038910231E-9 -1.666401789775461E-10 3.902188736626003E-10 2.349365669297201E-13
i 1.428869110966395E-15 -3.400321506824089E-15 -1.093006573942082E-11 -2.329083130830453E-12 2.349365669297201E-13 2.273576524003805E-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 14.6   n/a MPO474797  

91806 (1999 TJ244)          Discovered 1999-Oct-07 by CSS at Catalina
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 TJ244 = 2002 EJ14 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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