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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 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2329404934749525 1.0836e-07  
a 2.383720989353785 3.0051e-08 AU
q 1.828455845787112 2.5811e-07 AU
i 2.560227168878168 9.7767e-06 deg
node 219.1542212308965 0.00020765 deg
peri 157.9343517562151 0.00020818 deg
M 140.9840724658995 2.0567e-05 deg
tp 2456474.059723662293
(2013-Jun-30.55972366)
7.2195e-05 JED
period 1344.254681871345
3.68
2.542e-05
6.96e-08
d
yr
n .2678063947665348 5.0643e-09 deg/d
Q 2.938986132920458 3.7051e-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 = .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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