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118416 (1999 TD9)
Classification: Outer Main-belt Asteroid          SPK-ID: 2118416
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2131779816242142 3.6694e-08  
a 3.208522122275543 2.2298e-08 au
q 2.524535852252203 1.1633e-07 au
i 7.966731263741642 5.0336e-06 deg
node 182.3065327106553 3.1398e-05 deg
peri 257.1416405129909 3.3582e-05 deg
M 183.0402959003387 1.2664e-05 deg
tp 2460032.376843693205
(2023-Mar-28.87684369)
7.9628e-05 TDB
period 2099.210470652368
5.75
2.1883e-05
5.991e-08
d
yr
n .1714930470445507 1.7877e-09 deg/d
Q 3.892508392298884 2.7051e-08 au
  Orbit Determination Parameters
   # obs. used (total)      620  
   data-arc span      9370 days (25.65 yr)  
   first obs. used      1993-09-14  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54807  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 06:55:41  

Additional Information
 Earth MOID = 1.55474 au 
 Jupiter MOID = 1.50482 au 
 T_jup = 3.141 
[ 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 14.8   n/a MPO264147  
diameter diameter 6.601 km 0.425 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.059   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

118416 (1999 TD9)          Discovered 1999-Oct-07 by Korlevic, K., Juric, M. at Visnjan
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

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