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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1240896845457819 2.7947e-08  
a 3.031956337823035 1.3303e-08 au
q 2.65572183230599 8.3286e-08 au
i 10.59376524920396 4.4504e-06 deg
node 177.86418726 1.6325e-05 deg
peri 111.0505866396664 2.5625e-05 deg
M 65.78592229159905 1.8114e-05 deg
tp 2458848.118331065660
(2019-Dec-30.61833107)
9.7225e-05 TDB
period 1928.336586269344
5.28
1.2691e-05
3.475e-08
d
yr
n .1866893998502999 1.2287e-09 deg/d
Q 3.408190843340079 1.4954e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2069  
   data-arc span      8687 days (23.78 yr)  
   first obs. used      1997-04-28  
   last obs. used      2021-02-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44537  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:19:15  

Additional Information
 Earth MOID = 1.66124 au 
 Jupiter MOID = 1.8733 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 13.36   n/a E2021B10  
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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