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JPL Small-Body Database Browser
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91885 (1999 UK49)
Classification: Main-belt Asteroid          SPK-ID: 2091885
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06158225186143033 5.5771e-08  
a 3.132022072308896 3.4931e-08 au
q 2.939145100216411 1.7212e-07 au
i 9.55841515118046 6.9474e-06 deg
node 240.7887948639239 3.5996e-05 deg
peri 257.0917922796108 6.9269e-05 deg
M 162.9702363742909 5.8117e-05 deg
tp 2458083.981063357896
(2017-Nov-26.48106336)
0.00032752 TDB
period 2024.583289143512
5.54
3.387e-05
9.273e-08
d
yr
n .1778143689767862 2.9747e-09 deg/d
Q 3.324899044401382 3.7082e-08 au
  Orbit Determination Parameters
   # obs. used (total)      515  
   data-arc span      21425 days (58.66 yr)  
   first obs. used      1960-09-24  
   last obs. used      2019-05-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5177  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 11:21:38  

Additional Information
 Earth MOID = 1.97234 au 
 Jupiter MOID = 1.81683 au 
 T_jup = 3.189 
[ 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 14.6   n/a MPO348078  
diameter diameter 5.036 km 1.152 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.133   0.059 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91885 (1999 UK49)          Discovered 1999-Oct-31 by CSS at Catalina
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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