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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2823344197868677 7.4412e-08  
a 2.340515697439585 1.7435e-08 AU
q 1.679707556000924 1.6963e-07 AU
i 23.43188199417545 1.0565e-05 deg
node 236.9345655637369 1.8248e-05 deg
peri 149.2310178715863 2.3713e-05 deg
M 83.75116528088442 1.8307e-05 deg
tp 2456496.233511926989
(2013-Jul-22.73351193)
6.4404e-05 JED
period 1307.873572133865
3.58
1.4614e-05
4.001e-08
d
yr
n .2752559633211649 3.0757e-09 deg/d
Q 3.001323838878247 2.2358e-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 = .713935 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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