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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2329404909646648 1.0917e-07  
a 2.383720987998547 3.0922e-08 AU
q 1.82845585073139 2.5942e-07 AU
i 2.560227102677068 9.8058e-06 deg
node 219.1542168438595 0.00021535 deg
peri 157.9343577762063 0.000216 deg
M 140.9840718134699 2.0848e-05 deg
tp 2456474.059726547445
(2013-Jun-30.55972655)
7.3771e-05 JED
period 1344.254680724953
3.68
2.6157e-05
7.161e-08
d
yr
n .2678063949949223 5.2111e-09 deg/d
Q 2.938986125265705 3.8126e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      153  
   data-arc span      6014 days (16.47 yr)  
   first obs. used      1998-10-11  
   last obs. used      2015-03-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .59816  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 23:32:12  

Additional Information
 Earth MOID = .830405 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
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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