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279754 (1998 UB18)
Classification: Main-belt Asteroid          SPK-ID: 2279754
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1864355589477474 1.009e-07  
a 2.275126975350754 3.8822e-08 AU
q 1.850962406024138 2.3633e-07 AU
i 6.253058327538894 1.3744e-05 deg
node 272.3975746057641 9.7729e-05 deg
peri 55.25400438972677 0.00010644 deg
M 293.2853585371169 5.0561e-05 deg
tp 2457232.787340718136
(2015-Jul-29.28734072)
0.00017942 JED
period 1253.449630019419
3.43
3.2083e-05
8.784e-08
d
yr
n .2872073926053357 7.3513e-09 deg/d
Q 2.699291544677369 4.606e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      122  
   data-arc span      5649 days (15.47 yr)  
   first obs. used      1998-10-19  
   last obs. used      2014-04-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .72752  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-12 09:14:42  

Additional Information
 Earth MOID = .848317 AU 
 T_jup = 3.579 
[ 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 16.7 mag n/a MPO254496  

279754 (1998 UB18)          Discovered 1998-Oct-19 by Beijing Schmidt CCD Asteroid Program at Xinglong (327)
Reference: 20110615/Numbers.arcLast Updated: 2011-06-23

[ show close-approach data ]
Alternate Designations
 1998 UB18 = 2005 UC7 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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