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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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09927479270666181 7.7826e-08  
a 2.55001688266813 2.3813e-08 AU
q 2.296864485242764 1.9978e-07 AU
i 14.72324922177606 8.7512e-06 deg
node 228.2907956775403 2.4264e-05 deg
peri 209.9682681498096 5.1172e-05 deg
M 222.5090051471055 5.1046e-05 deg
tp 2457568.547645586130
(2016-Jun-29.04764559)
0.00021603 JED
period 1487.349426991957
4.07
2.0834e-05
5.704e-08
d
yr
n .2420413074875557 3.3904e-09 deg/d
Q 2.803169280093496 2.6177e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      836  
   data-arc span      21857 days (59.84 yr)  
   first obs. used      1954-08-31  
   last obs. used      2014-07-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .4497  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 14:27:45  

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 (399)
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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