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219129 (1998 UK31)
Classification: Main-belt Asteroid          SPK-ID: 2219129
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .232468844159154 1.1099e-07  
a 2.384733028093625 3.2873e-08 AU
q 1.830356897424541 2.6241e-07 AU
i 2.559415847542741 9.865e-06 deg
node 219.2023003572756 0.0002258 deg
peri 157.9654248390249 0.00022682 deg
M 87.38445384768721 2.12e-05 deg
tp 2456473.995063161655
(2013-Jun-30.49506316)
7.7602e-05 JED
period 1345.110853089289
3.68
2.7813e-05
7.615e-08
d
yr
n .2676359343716506 5.534e-09 deg/d
Q 2.939109158762709 4.0515e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      148  
   data-arc span      5585 days (15.29 yr)  
   first obs. used      1998-10-11  
   last obs. used      2014-01-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5978  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-11 21:59:30  

Additional Information
 Earth MOID = .831037 AU 
 T_jup = 3.498 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.9 mag n/a MPO234183  

219129 (1998 UK31)          Discovered 1998-Oct-20 by Beijing Schmidt CCD Asteroid Program at Xinglong (327)
Reference: 20091004/Numbers.arcLast Updated: 2009-10-06

Alternate Designations
 1998 UK31 = 2009 QZ5 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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