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85995 (1999 JT56)
Classification: Main-belt Asteroid          SPK-ID: 2085995
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1194448522188949 4.3281e-08  
a 3.012664082286872 2.1738e-08 au
q 2.652816866192945 1.2768e-07 au
i 12.90002525214239 4.7149e-06 deg
node 59.38610999861316 2.1335e-05 deg
peri 91.15149534928527 2.9014e-05 deg
M 81.71264435182897 1.9413e-05 deg
tp 2458566.977885901679
(2019-Mar-24.47788590)
0.00010231 TDB
period 1909.960965201616
5.23
2.0672e-05
5.66e-08
d
yr
n .1884855274840647 2.0401e-09 deg/d
Q 3.3725112983808 2.4335e-08 au
  Orbit Determination Parameters
   # obs. used (total)      669  
   data-arc span      7709 days (21.11 yr)  
   first obs. used      1999-05-10  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60648  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 00:18:42  

Additional Information
 Earth MOID = 1.70288 au 
 Jupiter MOID = 1.78314 au 
 T_jup = 3.200 
[ 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 14.7   n/a MPO468830  
diameter diameter 4.478 km 0.926 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.106   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85995 (1999 JT56)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1999 JT56 = 2003 AJ64 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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