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16557 (1991 VE2)
Classification: Main-belt Asteroid          SPK-ID: 2016557
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09927482320055055 7.6095e-08  
a 2.550016896185666 2.2656e-08 AU
q 2.296864419658417 1.9668e-07 AU
i 14.72325251694554 8.1238e-06 deg
node 228.2907922736906 2.3704e-05 deg
peri 209.9682790637296 4.9894e-05 deg
M 222.5089920013951 4.997e-05 deg
tp 2457568.547704414773
(2016-Jun-29.04770441)
0.00021142 JED
period 1487.349438818525
4.07
1.9822e-05
5.427e-08
d
yr
n .242041305562979 3.2257e-09 deg/d
Q 2.803169372712914 2.4906e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      865  
   data-arc span      22212 days (60.81 yr)  
   first obs. used      1954-08-31  
   last obs. used      2015-06-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .45008  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 12:18:52  

Additional Information
 Earth MOID = 1.32012 AU 
 T_jup = 3.388 
[ 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 13.0 mag n/a MPO302167  

16557 (1991 VE2)          Discovered 1991-Nov-09 by Ueda, S., Kaneda, H. at Kushiro
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19

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