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91748 (1999 TA186)
Classification: Main-belt Asteroid          SPK-ID: 2091748
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .118793573601661 6.8693e-08  
a 3.081141908325896 2.9673e-08 au
q 2.715122050262022 2.0583e-07 au
i 12.43752040124254 6.1346e-06 deg
node 278.3464324655783 2.9088e-05 deg
peri 235.1025513840273 3.6124e-05 deg
M 168.6964492721564 2.3367e-05 deg
tp 2458074.801799690281
(2017-Nov-17.30179969)
0.00012468 TDB
period 1975.449711889713
5.41
2.8537e-05
7.813e-08
d
yr
n .1822369852460706 2.6325e-09 deg/d
Q 3.447161766389771 3.3198e-08 au
  Orbit Determination Parameters
   # obs. used (total)      761  
   data-arc span      7634 days (20.90 yr)  
   first obs. used      1999-09-08  
   last obs. used      2020-08-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53897  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 08:19:20  

Additional Information
 Earth MOID = 1.74926 au 
 Jupiter MOID = 1.74255 au 
 T_jup = 3.181 
[ 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 13.9   n/a MPO439645  
diameter diameter 9.336 km 0.196 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.074   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91748 (1999 TA186)          Discovered 1999-Oct-12 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

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