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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2333246269818026 1.0848e-07  
a 2.383032430922279 2.9698e-08 au
q 1.8270122778918 2.5841e-07 au
i 2.561241419848283 9.7796e-06 deg
node 219.1412372048506 0.00020756 deg
peri 157.9016385334593 0.00020809 deg
M 248.2074102415887 2.1647e-05 deg
tp 2457817.757231548934
(2017-Mar-05.25723155)
8.5638e-05 JED
period 1343.67227454192
3.68
2.5118e-05
6.877e-08
d
yr
n .2679224739698747 5.0084e-09 deg/d
Q 2.939052583952758 3.6627e-08 au
  Orbit Determination Parameters
   # obs. used (total)      157  
   data-arc span      6028 days (16.50 yr)  
   first obs. used      1998-10-11  
   last obs. used      2015-04-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .59123  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 23:02:52  

Additional Information
 Earth MOID = .827345 au 
 Jupiter MOID = 2.52263 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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