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16721 (1995 WF3)
Classification: Main-belt Asteroid          SPK-ID: 2016721
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2284738455945715 5.1657e-08  
a 2.65631597151619 2.3319e-08 AU
q 2.049417246389606 1.3432e-07 AU
i 11.53831829508141 1.0957e-05 deg
node 57.45414871961825 3.5347e-05 deg
peri 68.46108364631375 4.4273e-05 deg
M 56.15112468398542 2.5115e-05 deg
tp 2456553.854051572337
(2013-Sep-18.35405157)
0.00010901 JED
period 1581.313676861805
4.33
2.0823e-05
5.701e-08
d
yr
n .2276588163800858 2.9979e-09 deg/d
Q 3.263214696642775 2.8647e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      574  
   data-arc span      22451 days (61.47 yr)  
   first obs. used      1953-01-10  
   last obs. used      2014-06-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51362  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 12:37:09  

Additional Information
 Earth MOID = 1.09675 AU 
 T_jup = 3.322 
[ 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 14.4 mag n/a MPO256986  

16721 (1995 WF3)          Discovered 1995-Nov-16 by Ueda, S., Kaneda, H. at Kushiro (399)
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1995 WF3 = 1992 AD4 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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