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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09896814086145152 7.2752e-08  
a 2.549364694727583 1.7617e-08 au
q 2.297058810512572 1.9126e-07 au
i 14.72521981774954 7.0863e-06 deg
node 228.2785966831704 2.1228e-05 deg
peri 210.0703719272362 4.5627e-05 deg
M 7.642807773153401 4.5659e-05 deg
tp 2457568.935652687363
(2016-Jun-29.43565269)
0.00018838 JED
period 1486.778860573227
4.07
1.5412e-05
4.22e-08
d
yr
n .2421341932862848 2.5099e-09 deg/d
Q 2.801670578942594 1.9361e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1040  
   data-arc span      22443 days (61.45 yr)  
   first obs. used      1954-08-31  
   last obs. used      2016-02-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48411  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Mar-24 16:27:12  

Additional Information
 Earth MOID = 1.31912 au 
 Jupiter MOID = 2.54211 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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