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297309 (1998 UJ18)
Classification: Main-belt Asteroid          SPK-ID: 2297309
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .185869314072736 7.4424e-08  
a 2.195061695324858 1.6031e-08 au
q 1.78706708366749 1.683e-07 au
i 4.86252397012097 8.1199e-06 deg
node 11.47834915445402 8.0999e-05 deg
peri 353.2331685673872 8.3802e-05 deg
M 181.6234289837738 1.9752e-05 deg
tp 2458189.077741299810
(2018-Mar-11.57774130)
6.8105e-05 JED
period 1187.868931781724
3.25
1.3013e-05
3.563e-08
d
yr
n .3030637390776977 3.32e-09 deg/d
Q 2.603056306982227 1.9011e-08 au
  Orbit Determination Parameters
   # obs. used (total)      155  
   data-arc span      6387 days (17.49 yr)  
   first obs. used      1998-09-18  
   last obs. used      2016-03-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52372  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Mar-25 04:40:24  

Additional Information
 Earth MOID = .784154 au 
 Jupiter MOID = 2.84549 au 
 T_jup = 3.642 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.2 mag n/a MPO260569  

297309 (1998 UJ18)          Discovered 1998-Oct-20 by Beijing Schmidt CCD Asteroid Program at Xinglong
Reference: 20111012/Numbers.arcLast Updated: 2011-10-13

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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