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74814 (1999 TD8)
Classification: Main-belt Asteroid          SPK-ID: 2074814
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 .2047806352283758 4.3013e-08  
a 2.32948338171621 9.533e-09 au
q 1.852450295054419 1.0126e-07 au
i .8439392710898431 4.9612e-06 deg
node 37.44720385524382 0.00029306 deg
peri 358.2579094804846 0.00029333 deg
M 281.4460204341675 1.6133e-05 deg
tp 2459283.869786126366
(2021-Mar-10.36978613)
5.953e-05 TDB
period 1298.637237340718
3.56
7.9716e-06
2.183e-08
d
yr
n .2772136741875578 1.7017e-09 deg/d
Q 2.806516468378 1.1485e-08 au
  Orbit Determination Parameters
   # obs. used (total)      812  
   data-arc span      13788 days (37.75 yr)  
   first obs. used      1981-09-29  
   last obs. used      2019-06-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54657  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:22:33  

Additional Information
 Earth MOID = .859323 au 
 Jupiter MOID = 2.62101 au 
 T_jup = 3.543 
[ 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 MPO267935  

74814 (1999 TD8)          Discovered 1999-Oct-05 by Juels, C. W. at Fountain Hills
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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