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74865 (1999 TG91)
Classification: Main-belt Asteroid          SPK-ID: 2074865
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 .1360965037271466 3.346e-08  
a 2.304911537174856 9.6719e-09 au
q 1.991221135564995 7.4628e-08 au
i 3.809800591642741 4.5938e-06 deg
node 143.7664836900746 6.4706e-05 deg
peri 119.2051591106447 6.9288e-05 deg
M 55.2856940869218 2.6693e-05 deg
tp 2458804.213656410629
(2019-Nov-16.71365641)
9.4734e-05 TDB
period 1278.144099648542
3.50
8.0451e-06
2.203e-08
d
yr
n .2816583827277308 1.7728e-09 deg/d
Q 2.618601938784717 1.0988e-08 au
  Orbit Determination Parameters
   # obs. used (total)      923  
   data-arc span      8688 days (23.79 yr)  
   first obs. used      1997-01-10  
   last obs. used      2020-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55644  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:42:02  

Additional Information
 Earth MOID = .978932 au 
 Jupiter MOID = 2.44731 au 
 T_jup = 3.573 
[ 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 15.9   n/a MPO432301  

74865 (1999 TG91)          Discovered 1999-Oct-02 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 TG91 = 1998 FY120 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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