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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07905289497899362 4.0346e-08  
a 3.088989049729531 3.0398e-08 au
q 2.844795522790001 1.3168e-07 au
i 10.45077103484185 5.7864e-06 deg
node 183.8761922457659 2.4464e-05 deg
peri 68.75179396188422 4.4815e-05 deg
M 96.4126043452912 3.6905e-05 deg
tp 2458865.426912698813
(2020-Jan-16.92691270)
0.0002027 TDB
period 1983.001213655782
5.43
2.9272e-05
8.014e-08
d
yr
n .1815430053803741 2.6798e-09 deg/d
Q 3.333182576669062 3.2801e-08 au
  Orbit Determination Parameters
   # obs. used (total)      462  
   data-arc span      7595 days (20.79 yr)  
   first obs. used      1999-10-03  
   last obs. used      2020-07-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57503  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:57:17  

Additional Information
 Earth MOID = 1.85299 au 
 Jupiter MOID = 1.7185 au 
 T_jup = 3.195 
[ 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 15.23   n/a E2021B55  
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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