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JPL Small-Body Database Browser
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20388 (1998 KZ54)
Classification: Main-belt Asteroid          SPK-ID: 2020388
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1249069029973209 3.6038e-08  
a 3.034257165350361 1.6297e-08 au
q 2.655257499929017 1.1398e-07 au
i 10.58959617639071 4.6624e-06 deg
node 177.9656340056121 2.2752e-05 deg
peri 111.5339836462086 3.0177e-05 deg
M 313.3682510762117 1.9392e-05 deg
tp 2458850.566899446909
(2020-Jan-02.06689945)		 0.00010422 TDB
period 1930.532006166364
5.29		 1.5553e-05
4.258e-08		 d
yr
n .1864770948371301 1.5024e-09 deg/d
Q 3.413256830771704 1.8333e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1546  
   data-arc span      8178 days (22.39 yr)  
   first obs. used      1997-04-28  
   last obs. used      2019-09-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48353  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 01:29:46  

Additional Information
 Earth MOID = 1.66183 au 
 Jupiter MOID = 1.87341 au 
 T_jup = 3.204 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.3   n/a MPO350964  
diameter diameter 7.762 km 0.224 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.169   0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

20388 (1998 KZ54)          Discovered 1998-May-23 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 KZ54 = 1997 HH5 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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