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20384 (1998 KW51)
Classification: Main-belt Asteroid          SPK-ID: 2020384
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1667694481935399 4.7666e-08  
a 2.576337322240588 1.0688e-08 au
q 2.146682968650103 1.2086e-07 au
i 13.70957744370473 4.2592e-06 deg
node 123.0429442359979 2.2574e-05 deg
peri 267.2683457175971 2.6944e-05 deg
M 338.9832815005167 1.328e-05 deg
tp 2459088.678949543343
(2020-Aug-27.17894954)
5.5635e-05 TDB
period 1510.436647680456
4.14
9.3995e-06
2.573e-08
d
yr
n .2383416746096859 1.4832e-09 deg/d
Q 3.005991675831073 1.2471e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1585  
   data-arc span      15454 days (42.31 yr)  
   first obs. used      1978-07-09  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49113  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:03:07  

Additional Information
 Earth MOID = 1.20295 au 
 Jupiter MOID = 2.55172 au 
 T_jup = 3.368 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456703.5 (2014-Feb-15.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1692551176653935 4.8009e-08  
q 2.139549969497957 1.2206e-07 au
tp 2456065.988438173285
(2012-May-18.48843817)
5.9426e-05 TDB
node 123.1811776341398 2.2625e-05 deg
peri 266.8142318446665 2.6771e-05 deg
i 13.69683678559336 4.2556e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1585  
   data-arc span      15454 days (42.31 yr)  
   first obs. used      1978-07-09  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49113  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:03:07  

Additional Information
 Jupiter MOID = 2.55172 au 
 T_jup = 3.368 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.304881165118686E-15 -5.846073393535146E-15 2.055429638700922E-13 -1.58434507073113E-14 2.55295104423726E-14 -7.131235063321274E-15
q -5.846073393535146E-15 1.489979941814754E-14 -7.519331048545955E-13 4.347322154960686E-14 -1.16021426993161E-13 1.801021727899268E-14
tp 2.055429638700922E-13 -7.519331048545955E-13 3.53150776030215E-9 -2.674677588865023E-11 8.871889844765045E-10 -6.666928415360611E-12
node -1.58434507073113E-14 4.347322154960686E-14 -2.674677588865023E-11 5.119074524257686E-10 -5.022990272950917E-10 -6.103393953051366E-12
peri 2.55295104423726E-14 -1.16021426993161E-13 8.871889844765045E-10 -5.022990272950917E-10 7.166636828497263E-10 4.466161158191789E-12
i -7.131235063321274E-15 1.801021727899268E-14 -6.666928415360611E-12 -6.103393953051366E-12 4.466161158191789E-12 1.811031708279865E-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 13.4   n/a MPO449101  
diameter diameter 5.185 km 0.171 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.345   0.089 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20384 (1998 KW51)          Discovered 1998-May-23 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 KW51 = 1978 NV7 = 1999 SE5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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