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86285 (1999 UR39)
Classification: Main-belt Asteroid          SPK-ID: 2086285
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0382522797906622 4.2178e-08  
a 3.166705070017033 2.5065e-08 au
q 3.045571381664233 1.4158e-07 au
i 9.715258885326181 5.5681e-06 deg
node 30.92756588111476 2.8537e-05 deg
peri 227.1572490355038 8.0985e-05 deg
M 353.1234254391059 7.5138e-05 deg
tp 2459039.816921778874
(2020-Jul-09.31692178)
0.00042956 TDB
period 2058.305587332187
5.64
2.4438e-05
6.691e-08
d
yr
n .174901143064283 2.0765e-09 deg/d
Q 3.287838758369833 2.6024e-08 au
  Orbit Determination Parameters
   # obs. used (total)      828  
   data-arc span      7144 days (19.56 yr)  
   first obs. used      1999-10-02  
   last obs. used      2019-04-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54715  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 08:36:14  

Additional Information
 Earth MOID = 2.04135 au 
 Jupiter MOID = 1.72147 au 
 T_jup = 3.180 
[ 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 14.0   n/a MPO344897  
diameter diameter 9.147 km 0.153 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.053   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

86285 (1999 UR39)          Discovered 1999-Oct-31 by Spacewatch at Kitt Peak
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1999 UR39 = 2000 XA52 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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