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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05821335930018976 4.6686e-08  
a 2.995963792273913 2.2219e-08 au
q 2.821558675583913 1.4487e-07 au
i 11.7415544011959 5.4156e-06 deg
node 137.9572011469476 3.0014e-05 deg
peri 134.5347554329104 7.4271e-05 deg
M 341.8601854675987 7.1855e-05 deg
tp 2458695.940698484112
(2019-Jul-31.44069848)
0.00037831 TDB
period 1894.101584826509
5.19
2.1071e-05
5.769e-08
d
yr
n .1900637235531242 2.1144e-09 deg/d
Q 3.170368908963913 2.3512e-08 au
  Orbit Determination Parameters
   # obs. used (total)      949  
   data-arc span      9927 days (27.18 yr)  
   first obs. used      1992-03-04  
   last obs. used      2019-05-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52342  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:51:59  

Additional Information
 Earth MOID = 1.81788 au 
 Jupiter MOID = 2.01322 au 
 T_jup = 3.220 
[ 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 14.2   n/a MPO395198  
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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