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21242 (1995 WZ41)
Classification: Main-belt Asteroid          SPK-ID: 2021242
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2825026833924446 7.4352e-08  
a 2.339886772020881 1.7415e-08 AU
q 1.678862480090497 1.6941e-07 AU
i 23.43350032408424 1.0565e-05 deg
node 236.9169338570175 1.8252e-05 deg
peri 149.1943334253945 2.3713e-05 deg
M 138.8693185016237 1.8707e-05 deg
tp 2456496.193583744369
(2013-Jul-22.69358374)
6.4369e-05 JED
period 1307.346444923357
3.58
1.4596e-05
3.996e-08
d
yr
n .2753669476043935 3.0743e-09 deg/d
Q 3.000911063951266 2.2335e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      511  
   data-arc span      13729 days (37.59 yr)  
   first obs. used      1976-05-30  
   last obs. used      2013-12-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56212  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 22:56:37  

Additional Information
 Earth MOID = .714022 AU 
 T_jup = 3.404 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.5 mag n/a MPO267787  

21242 (1995 WZ41)          Discovered 1995-Nov-25 by Ueda, S., Kaneda, H. at Kushiro (399)
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1995 WZ41 = 1998 MR5 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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