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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1441225050801391 3.1812e-08  
a 2.324801371344979 6.6958e-09 au
q 1.989745173892998 7.3682e-08 au
i 1.121131143182399 4.0283e-06 deg
node 25.25111938015909 0.00015163 deg
peri 141.1519099057078 0.00015214 deg
M 352.6709330864444 1.3561e-05 deg
tp 2459226.858663908576
(2021-Jan-12.35866391)
4.8821e-05 TDB
period 1294.724024082334
3.54
5.5936e-06
1.531e-08
d
yr
n .2780515332255138 1.2013e-09 deg/d
Q 2.65985756879696 7.6609e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2262  
   data-arc span      13699 days (37.51 yr)  
   first obs. used      1983-09-12  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5055  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:56:34  

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 14.13   n/a E2021B10  
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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