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JPL Small-Body Database Browser
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74958 (1999 TL197)
Classification: Main-belt Asteroid          SPK-ID: 2074958
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1162916085217794 6.7685e-08  
a 2.331574856283852 1.3516e-08 au
q 2.060432265857666 1.6041e-07 au
i 7.328230127292187 7.1731e-06 deg
node 9.8698737843713 2.8941e-05 deg
peri 12.33540893608776 3.5224e-05 deg
M 299.4760480453996 2.3615e-05 deg
tp 2459219.123704405765
(2021-Jan-04.62370441)
8.6627e-05 TDB
period 1300.386558450651
3.56
1.1307e-05
3.096e-08
d
yr
n .2768407575889765 2.4072e-09 deg/d
Q 2.602717446710038 1.5088e-08 au
  Orbit Determination Parameters
   # obs. used (total)      496  
   data-arc span      9216 days (25.23 yr)  
   first obs. used      1994-04-06  
   last obs. used      2019-06-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63644  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:24:42  

Additional Information
 Earth MOID = 1.06357 au 
 Jupiter MOID = 2.86098 au 
 T_jup = 3.551 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456884.5 (2014-Aug-15.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1163853425847331 6.7473e-08  
q 2.060294800151914 1.5982e-07 au
tp 2456620.205064892018
(2013-Nov-23.70506489)
7.288e-05 TDB
node 9.97963549738159 2.8951e-05 deg
peri 12.60941917775979 3.5254e-05 deg
i 7.327670688451936 7.1713e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      496  
   data-arc span      9216 days (25.23 yr)  
   first obs. used      1994-04-06  
   last obs. used      2019-06-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63644  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:24:42  

Additional Information
 Jupiter MOID = 2.86098 au 
 T_jup = 3.551 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.552669490055905E-15 -1.075566122949446E-14 -1.715144108322889E-12 -5.452404031455976E-15 -5.203251126693062E-13 6.584776339931067E-15
q -1.075566122949446E-14 2.554208255149409E-14 4.441112089689467E-12 1.193312674701807E-14 1.336002826193471E-12 -1.592950856606383E-14
tp -1.715144108322889E-12 4.441112089689467E-12 5.311527674778888E-9 -3.400026034228214E-12 1.471731612203927E-9 -7.168424671716196E-12
node -5.452404031455976E-15 1.193312674701807E-14 -3.400026034228214E-12 8.381360545674779E-10 -8.315075994081548E-10 2.319238280391843E-12
peri -5.203251126693062E-13 1.336002826193471E-12 1.471731612203927E-9 -8.315075994081548E-10 1.24284429551101E-9 -4.329385565234482E-12
i 6.584776339931067E-15 -1.592950856606383E-14 -7.168424671716196E-12 2.319238280391843E-12 -4.329385565234482E-12 5.142799824649015E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.3   n/a MPO436308  

74958 (1999 TL197)          Discovered 1999-Oct-12 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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