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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 ]

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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 
[ 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 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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