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74811 (1999 TH5)
Classification: Main-belt Asteroid          SPK-ID: 2074811
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08711040797896942 5.9091e-08  
a 2.572360742863317 1.8881e-08 au
q 2.348281349083409 1.5724e-07 au
i 12.42768557285532 5.8647e-06 deg
node 178.2686328895492 2.585e-05 deg
peri 147.8564731571846 3.9333e-05 deg
M 46.20482295624299 3.1825e-05 deg
tp 2458807.089055262206
(2019-Nov-19.58905526)
0.0001322 TDB
period 1506.940956608474
4.13
1.6591e-05
4.542e-08
d
yr
n .2388945621401234 2.6302e-09 deg/d
Q 2.796440136643226 2.0526e-08 au
  Orbit Determination Parameters
   # obs. used (total)      338  
   data-arc span      6829 days (18.70 yr)  
   first obs. used      1999-10-01  
   last obs. used      2018-06-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57323  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 02:31:26  

Additional Information
 Earth MOID = 1.34715 au 
 Jupiter MOID = 2.52321 au 
 T_jup = 3.391 
[ 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 16.1   n/a MPO436306  
diameter diameter 3.687 km 0.179 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.043   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74811 (1999 TH5)          Discovered 1999-Oct-01 by Hug, G. at Farpoint
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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