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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1863991189903514 1.087e-07  
a 2.27493303878784 4.093e-08 AU
q 1.850887524595744 2.5201e-07 AU
i 6.253092444387995 1.5029e-05 deg
node 272.397893905148 0.00010226 deg
peri 55.28217972046713 0.00011378 deg
M 235.8042377304525 5.8957e-05 deg
tp 2457232.870077327207
(2015-Jul-29.37007733)
0.00021234 JED
period 1253.289363448438
3.43
3.3823e-05
9.26e-08
d
yr
n .2872441197533636 7.7521e-09 deg/d
Q 2.698978552979936 4.856e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      119  
   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      .66755  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 17:18:10  

Additional Information
 Earth MOID = .846416 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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