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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2825026832555709 7.4244e-08  
a 2.339886771409494 1.7354e-08 AU
q 1.678862479972097 1.691e-07 AU
i 23.43350242849145 9.9788e-06 deg
node 236.9169372599732 1.7257e-05 deg
peri 149.1943324906358 2.2449e-05 deg
M 138.8693173139414 1.8452e-05 deg
tp 2456496.193588255114
(2013-Jul-22.69358825)
6.3307e-05 JED
period 1307.346444410963
3.58
1.4544e-05
3.982e-08
d
yr
n .2753669477123191 3.0634e-09 deg/d
Q 3.000911062846891 2.2256e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      530  
   data-arc span      14238 days (38.98 yr)  
   first obs. used      1976-05-30  
   last obs. used      2015-05-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56183  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 16:39:04  

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 13.6 mag n/a MPO337437  

21242 (1995 WZ41)          Discovered 1995-Nov-25 by Ueda, S., Kaneda, H. at Kushiro
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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