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20382 (1998 KW49)
Classification: Main-belt Asteroid          SPK-ID: 2020382
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05716181486552997 3.8826e-08  
a 2.991818696446281 1.4742e-08 au
q 2.820800910008788 1.1135e-07 au
i 11.75484763016131 4.6705e-06 deg
node 137.913353810106 2.3262e-05 deg
peri 133.303138937293 6.0358e-05 deg
M 97.25067354083049 5.5834e-05 deg
tp 2458689.887488931287
(2019-Jul-25.38748893)
0.00029399 TDB
period 1890.172039863148
5.18
1.3971e-05
3.825e-08
d
yr
n .190458853695701 1.4077e-09 deg/d
Q 3.162836482883775 1.5585e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1367  
   data-arc span      10567 days (28.93 yr)  
   first obs. used      1992-03-04  
   last obs. used      2021-02-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49661  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:19:02  

Additional Information
 Earth MOID = 1.81647 au 
 Jupiter MOID = 2.01287 au 
 T_jup = 3.222 
[ 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 14.17   n/a E2021B10  
diameter diameter 5.563 km 0.283 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.109   0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20382 (1998 KW49)          Discovered 1998-May-23 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 KW49 = 1992 ER24 = 1999 RC77 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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