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31145 (1997 UK)
Classification: Main-belt Asteroid          SPK-ID: 2031145
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01914090836983628 5.8603e-08  
a 2.467287151874773 1.1574e-08 au
q 2.420061034578664 1.3713e-07 au
i .381455949669925 4.1837e-06 deg
node 218.1110412667623 0.00058012 deg
peri 351.1421842055963 0.00058899 deg
M 107.6352701362069 0.00010031 deg
tp 2458577.266459909115
(2019-Apr-03.76645991)
0.00039531 TDB
period 1415.558991396682
3.88
9.9603e-06
2.727e-08
d
yr
n .2543164941821327 1.7895e-09 deg/d
Q 2.514513269170882 1.1795e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1292  
   data-arc span      9918 days (27.15 yr)  
   first obs. used      1993-09-15  
   last obs. used      2020-11-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50923  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 03:33:51  

Additional Information
 Earth MOID = 1.41287 au 
 Jupiter MOID = 2.44347 au 
 T_jup = 3.486 
[ 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 15.3   n/a MPO474163  

31145 (1997 UK)          Discovered 1997-Oct-19 by Klet at Klet
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 UK = 1993 RL15 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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