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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 ]

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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 .2261545750363939 2.8151e-08  
a 2.897789252836616 1.2702e-08 au
q 2.242440955816321 8.0112e-08 au
i 14.78251756081307 4.918e-07 deg
node 77.52913351330636 1.7251e-06 deg
peri 285.2254229566039 3.089e-06 deg
M 114.5811468701252 4.1326e-06 deg
tp 2458627.031870350675
(2019-May-23.53187035)
1.7391e-05 TDB
period 1801.766977492042
4.93
1.1847e-05
3.244e-08
d
yr
n .1998038617075221 1.3137e-09 deg/d
Q 3.553137549856909 1.5575e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2136  
   data-arc span      23853 days (65.31 yr)  
   first obs. used      1955-11-19  
   last obs. used      2021-03-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45022  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:18:42  

Additional Information
 Earth MOID = 1.29331 au 
 Jupiter MOID = 2.13099 au 
 T_jup = 3.201 
[ 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 13.22   n/a E2021B10  
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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