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JPL Small-Body Database Browser
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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 ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1667693937184541 4.8498e-08  
a 2.576337317581547 1.3973e-08 au
q 2.146683105114244 1.226e-07 au
i 13.70957791749743 5.5388e-06 deg
node 123.0429625127934 2.3047e-05 deg
peri 267.2683011738661 2.9048e-05 deg
M 338.9833053013012 2.0175e-05 deg
tp 2459088.678849444212
(2020-Aug-27.17884944)
8.4936e-05 TDB
period 1510.436643583252
4.14
1.2288e-05
3.364e-08
d
yr
n .2383416752562104 1.939e-09 deg/d
Q 3.00599153004885 1.6303e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1329  
   data-arc span      15059 days (41.23 yr)  
   first obs. used      1978-07-09  
   last obs. used      2019-10-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52796  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 04:23:01  

Additional Information
 Earth MOID = 1.20295 au 
 Jupiter MOID = 2.55172 au 
 T_jup = 3.368 
[ 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 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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