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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1441225047592807 3.1781e-08  
a 2.324801371686635 6.5517e-09 au
q 1.989745174931345 7.3548e-08 au
i 1.12113116528865 4.0245e-06 deg
node 25.25112154752756 0.00015042 deg
peri 141.1519081644094 0.00015093 deg
M 352.670932437361 1.3275e-05 deg
tp 2459226.858666248786
(2021-Jan-12.35866625)
4.779e-05 TDB
period 1294.724024367746
3.54
5.4731e-06
1.498e-08
d
yr
n .2780515331642195 1.1754e-09 deg/d
Q 2.659857568441924 7.4959e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2281  
   data-arc span      13707 days (37.53 yr)  
   first obs. used      1983-09-12  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50354  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 02:55:09  

Additional Information
 Earth MOID = .996531 au 
 Jupiter MOID = 2.30998 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 14.15   n/a MPCxxxxx  
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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