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

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1441904375816225 3.2e-08  
a 2.324803047414694 7.3217e-09 au
q 1.989588678716879 7.4197e-08 au
i 1.121120964812838 4.1174e-06 deg
node 25.2550688711182 0.00015597 deg
peri 141.1798444309456 0.00015653 deg
M 297.0399775403965 1.4896e-05 deg
tp 2459226.933171635358
(2021-Jan-12.43317164)
5.4144e-05 TDB
period 1294.725424232994
3.54
6.1164e-06
1.675e-08
d
yr
n .278051232533158 1.3135e-09 deg/d
Q 2.660017416112508 8.3774e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2034  
   data-arc span      13295 days (36.40 yr)  
   first obs. used      1983-09-12  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51135  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:49:55  

Additional Information
 Earth MOID = .996685 au 
 Jupiter MOID = 2.31074 au 
 T_jup = 3.561 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.1   n/a MPO502315  
diameter diameter 3.846 km 0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.173   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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

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