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JPL Small-Body Database Browser
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20374 (1998 KD38)
Classification: Main-belt Asteroid          SPK-ID: 2020374
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2257500802695345 6.6158e-08  
a 2.896653967362871 1.4416e-08 au
q 2.242734101717637 1.895e-07 au
i 14.78464082773592 4.7977e-06 deg
node 77.53353524291815 1.5864e-05 deg
peri 285.1783370487882 1.8891e-05 deg
M 354.7431023768929 1.192e-05 deg
tp 2458626.794830280451
(2019-May-23.29483028)
5.9668e-05 TDB
period 1800.708246505174
4.93
1.3442e-05
3.68e-08
d
yr
n .1999213368954633 1.4924e-09 deg/d
Q 3.550573833008104 1.767e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1695  
   data-arc span      23394 days (64.05 yr)  
   first obs. used      1955-11-19  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47431  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 00:43:42  

Additional Information
 Earth MOID = 1.29426 au 
 Jupiter MOID = 2.12942 au 
 T_jup = 3.202 
[ 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 13.1   n/a MPO416925  
diameter diameter 6.329 km 0.105 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.305   0.046 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20374 (1998 KD38)          Discovered 1998-May-22 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 KD38 = 1999 WF2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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