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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2114717841000322 3.6389e-08  
a 3.213074649443239 2.185e-08 au
q 2.533600020878891 1.1571e-07 au
i 7.967333573153818 4.9817e-06 deg
node 182.1574689308202 3.049e-05 deg
peri 257.2079060210073 3.2712e-05 deg
M 217.3581695487272 1.2856e-05 deg
tp 2460034.035407564869
(2023-Mar-30.53540757)
8.0116e-05 TDB
period 2103.679865674882
5.76
2.1459e-05
5.875e-08
d
yr
n .1711286997009444 1.7456e-09 deg/d
Q 3.892549278007586 2.6471e-08 au
  Orbit Determination Parameters
   # obs. used (total)      636  
   data-arc span      9370 days (25.65 yr)  
   first obs. used      1993-09-14  
   last obs. used      2019-05-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54204  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:57:10  

Additional Information
 Earth MOID = 1.56336 au 
 Jupiter MOID = 1.50529 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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