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74947 (1999 TB181)
Classification: Main-belt Asteroid          SPK-ID: 2074947
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .194036900016103 4.2294e-08  
a 2.374714176990776 9.6563e-09 au
q 1.913931999663195 1.003e-07 au
i 3.335398165133668 5.0106e-06 deg
node 242.5973586409216 6.9775e-05 deg
peri 315.0198832307483 7.0737e-05 deg
M 65.31902772759783 1.219e-05 deg
tp 2458757.977154449692
(2019-Oct-01.47715445)
4.4605e-05 TDB
period 1336.643049284436
3.66
8.1528e-06
2.232e-08
d
yr
n .2693314420725293 1.6428e-09 deg/d
Q 2.835496354318358 1.153e-08 au
  Orbit Determination Parameters
   # obs. used (total)      757  
   data-arc span      9177 days (25.13 yr)  
   first obs. used      1994-02-16  
   last obs. used      2019-04-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54142  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:24:41  

Additional Information
 Earth MOID = .913672 au 
 Jupiter MOID = 2.13343 au 
 T_jup = 3.514 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456436.5 (2013-May-24.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1940019552219883 4.2232e-08  
q 1.913400647921632 1.001e-07 au
tp 2456086.048411237316
(2012-Jun-07.54841124)
4.0251e-05 TDB
node 242.6692017432007 6.9762e-05 deg
peri 314.9224246167176 7.0728e-05 deg
i 3.335867980024624 5.0115e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      757  
   data-arc span      9177 days (25.13 yr)  
   first obs. used      1994-02-16  
   last obs. used      2019-04-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54142  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:24:41  

Additional Information
 Jupiter MOID = 2.13343 au 
 T_jup = 3.514 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.78351616642804E-15 -4.214347456435024E-15 3.955470703929134E-13 -3.187724912427042E-15 1.471757053458024E-13 -9.402261778014977E-16
q -4.214347456435024E-15 1.001918227205334E-14 -9.154927352296955E-13 7.384879062943809E-15 -3.396490880921684E-13 2.394690777623729E-15
tp 3.955470703929134E-13 -9.154927352296955E-13 1.62014906732137E-9 -1.084313316282496E-11 4.812084743398076E-10 7.076006086555511E-13
node -3.187724912427042E-15 7.384879062943809E-15 -1.084313316282496E-11 4.86672860637306E-9 -4.860749281255275E-9 -4.169398092558696E-11
peri 1.471757053458024E-13 -3.396490880921684E-13 4.812084743398076E-10 -4.860749281255275E-9 5.002386160390966E-9 4.18270571360763E-11
i -9.402261778014977E-16 2.394690777623729E-15 7.076006086555511E-13 -4.169398092558696E-11 4.18270571360763E-11 2.51154163227071E-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 15.8   n/a MPO422179  

74947 (1999 TB181)          Discovered 1999-Oct-10 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 TB181 = 2001 EO19 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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