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118438 (1999 UK17)
Classification: Main-belt Asteroid          SPK-ID: 2118438
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07858907911751176 4.126e-08  
a 3.092845834194163 3.0673e-08 au
q 2.849781928232411 1.3322e-07 au
i 10.43277073646621 5.8193e-06 deg
node 183.9928332148039 2.5588e-05 deg
peri 69.92165673902595 4.573e-05 deg
M 23.43447512058493 3.7448e-05 deg
tp 2458871.173189813738
(2020-Jan-22.67318981)
0.00020653 TDB
period 1986.716213078643
5.44
2.9555e-05
8.092e-08
d
yr
n .1812035345713211 2.6956e-09 deg/d
Q 3.335909740155914 3.3084e-08 au
  Orbit Determination Parameters
   # obs. used (total)      442  
   data-arc span      7156 days (19.59 yr)  
   first obs. used      1999-10-03  
   last obs. used      2019-05-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56635  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 06:55:45  

Additional Information
 Earth MOID = 1.85786 au 
 Jupiter MOID = 1.72136 au 
 T_jup = 3.194 
[ 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 15.2   n/a MPO475040  
diameter diameter 3.680 km 0.401 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.119   0.054 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

118438 (1999 UK17)          Discovered 1999-Oct-29 by Spacewatch at Kitt Peak
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

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