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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 ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1244147105298958 2.8506e-08  
a 3.033310482205858 1.3556e-08 au
q 2.655922036614917 8.5328e-08 au
i 10.59148972623807 4.4853e-06 deg
node 177.8674814412983 1.6865e-05 deg
peri 111.1642981783467 2.5996e-05 deg
M 28.33127305563369 1.8127e-05 deg
tp 2458848.642126248114
(2019-Dec-31.14212625)		 9.7247e-05 TDB
period 1929.628592521295
5.28		 1.2935e-05
3.541e-08		 d
yr
n .1865643996960141 1.2506e-09 deg/d
Q 3.410698927796798 1.5242e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1941  
   data-arc span      8597 days (23.54 yr)  
   first obs. used      1997-04-28  
   last obs. used      2020-11-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44788  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 03:13:38  

Additional Information
 Earth MOID = 1.66329 au 
 Jupiter MOID = 1.87307 au 
 T_jup = 3.205 
[ 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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