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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 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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456711.5 (2014-Feb-23.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1438733987713937 3.1877e-08  
q 1.990031731746975 7.3757e-08 au
tp 2456637.924657232132
(2013-Dec-11.42465723)
4.4357e-05 TDB
node 25.28526151893277 0.00015022 deg
peri 141.2318029756414 0.00015073 deg
i 1.122437760178184 4.0252e-06 deg
  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
 Jupiter MOID = 2.30998 au 
 T_jup = 3.561 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.016167871168591E-15 -2.344507270801411E-15 4.121837199921541E-13 -1.299478254535644E-15 1.293029686878419E-13 -3.213525825291867E-17
q -2.344507270801411E-15 5.440089690598803E-15 -9.073764665418256E-13 2.773102637635508E-15 -2.86398775324042E-13 8.273647899789454E-17
tp 4.121837199921541E-13 -9.073764665418256E-13 1.967544735199718E-9 -1.97658971481876E-12 5.542005301501854E-10 5.738905938986183E-14
node -1.299478254535644E-15 2.773102637635508E-15 -1.97658971481876E-12 2.256543902849579E-8 -2.256123092800482E-8 1.415041245592447E-11
peri 1.293029686878419E-13 -2.86398775324042E-13 5.542005301501854E-10 -2.256123092800482E-8 2.271823382745652E-8 -1.412881776221082E-11
i -3.213525825291867E-17 8.273647899789454E-17 5.738905938986183E-14 1.415041245592447E-11 -1.412881776221082E-11 1.620230643104608E-11

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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