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69942 (1998 UC31)
Classification: Main-belt Asteroid          SPK-ID: 2069942
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2015302153289841 6.6244e-08  
a 2.764183355155195 2.6704e-08 AU
q 2.207116888381975 1.7908e-07 AU
i 9.121946560078424 9.2551e-06 deg
node 6.172311149828062 3.7486e-05 deg
peri 61.34711135524093 4.3888e-05 deg
M 120.9280092984412 2.0499e-05 deg
tp 2456236.637644862539
(2012-Nov-05.13764486)
9.4207e-05 JED
period 1678.605717791324
4.60
2.4325e-05
6.66e-08
d
yr
n .2144637041232534 3.1078e-09 deg/d
Q 3.321249821928415 3.2086e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      698  
   data-arc span      5777 days (15.82 yr)  
   first obs. used      1998-08-31  
   last obs. used      2014-06-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49139  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 14:06:01  

Additional Information
 Earth MOID = 1.23624 AU 
 T_jup = 3.292 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.8 mag n/a MPO263880  

69942 (1998 UC31)          Discovered 1998-Oct-25 by Ueda, S., Kaneda, H. at Kushiro (399)
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 UC31 = 2000 EZ63 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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