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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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1438736518444927 4.8224e-08  
a 2.324533224280399 1.2161e-08 AU
q 1.990094140469324 1.0953e-07 AU
i 1.122405973446031 5.8845e-06 deg
node 25.28512331971033 0.00023 deg
peri 141.2528840755241 0.00023057 deg
M 45.19707502545624 1.9368e-05 deg
tp 2456637.978847714673
(2013-Dec-11.47884771)
6.9352e-05 JED
period 1294.500026600494
3.54
1.0158e-05
2.781e-08
d
yr
n .278099646660805 2.1823e-09 deg/d
Q 2.658972308091473 1.391e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1197  
   data-arc span      11242 days (30.78 yr)  
   first obs. used      1983-09-12  
   last obs. used      2014-06-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52378  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 12:43:01  

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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