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74864 (1999 TF91)
Classification: Main-belt Asteroid          SPK-ID: 2074864
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2289695453857698 3.7234e-08  
a 2.340132232792405 7.9185e-09 au
q 1.804313219307341 8.8295e-08 au
i 8.72293238579951 5.1017e-06 deg
node 21.15060214843452 2.7666e-05 deg
peri 260.4159603977386 3e-05 deg
M 86.62866482127457 1.065e-05 deg
tp 2459081.856948892435
(2020-Aug-20.35694889)
3.8513e-05 TDB
period 1307.552166853964
3.58
6.6367e-06
1.817e-08
d
yr
n .2753236231225696 1.3975e-09 deg/d
Q 2.875951246277468 9.7316e-09 au
  Orbit Determination Parameters
   # obs. used (total)      581  
   data-arc span      10126 days (27.72 yr)  
   first obs. used      1992-10-26  
   last obs. used      2020-07-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5515  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 22:56:05  

Additional Information
 Earth MOID = .813282 au 
 Jupiter MOID = 2.33529 au 
 T_jup = 3.514 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.09   n/a E2021B10  

74864 (1999 TF91)          Discovered 1999-Oct-02 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 TF91 = 2002 HW4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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