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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2333524361554399 1.0851e-07  
a 2.383301110534255 2.9634e-08 au
q 1.827151990299121 2.5857e-07 au
i 2.561155365046837 9.7795e-06 deg
node 219.1385250791623 0.00020756 deg
peri 157.8771147338551 0.00020809 deg
M 301.8206520406665 2.2247e-05 deg
tp 2457817.686661087255
(2017-Mar-05.18666109)
8.5627e-05 JED
period 1343.899523350856
3.68
2.5065e-05
6.862e-08
d
yr
n .2678771691966838 4.9963e-09 deg/d
Q 2.939450230769389 3.655e-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 = .827893 au 
 Jupiter MOID = 2.5215 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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