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JPL Small-Body Database Browser
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49346 (1998 WK4)
Classification: Main-belt Asteroid          SPK-ID: 2049346
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2394574146366958 5.4908e-08  
a 2.712686298388911 1.79e-08 au
q 2.063113450656314 1.5e-07 au
i 2.889207603656044 5.1016e-06 deg
node 73.34817184240153 0.00011544 deg
peri 308.1106439908407 0.00011584 deg
M 239.5427818901883 1.5051e-05 deg
tp 2459146.544599219100
(2020-Oct-24.04459922)
7.2221e-05 TDB
period 1631.915951600946
4.47
1.6152e-05
4.422e-08
d
yr
n .220599596227264 2.1835e-09 deg/d
Q 3.362259146121508 2.2186e-08 au
  Orbit Determination Parameters
   # obs. used (total)      574  
   data-arc span      7577 days (20.74 yr)  
   first obs. used      1998-11-21  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51939  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 02:16:25  

Additional Information
 Earth MOID = 1.06695 au 
 Jupiter MOID = 2.0944 au 
 T_jup = 3.318 
[ 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 15.1   n/a MPO432052  

49346 (1998 WK4)          Discovered 1998-Nov-21 by Comba, P. G. at Prescott
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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