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19519 (1998 WB8)
Classification: Main-belt Asteroid          SPK-ID: 2019519
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1438736486396935 5.5743e-08  
a 2.32453323429342 1.3903e-08 AU
q 1.990094156491399 1.2961e-07 AU
i 1.12240977906707 6.0381e-06 deg
node 25.2849017032601 0.00026846 deg
peri 141.25308077 0.00026893 deg
M 45.1970959291708 2.1308e-05 deg
tp 2456637.978771498298
(2013-Dec-11.47877150)
7.6122e-05 JED
period 1294.500034964661
3.54
1.1613e-05
3.179e-08
d
yr
n .2780996448639166 2.4949e-09 deg/d
Q 2.658972312095443 1.5903e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1142  
   data-arc span      11163 days (30.56 yr)  
   first obs. used      1983-09-12  
   last obs. used      2014-04-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55392  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 14:13:59  

Additional Information
 Earth MOID = .997524 AU 
 T_jup = 3.561 
[ 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 14.0 mag n/a MPO257007  

19519 (1998 WB8)          Discovered 1998-Nov-18 by Ueda, S., Kaneda, H. at Kushiro (399)
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 WB8 = 1996 ED14 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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