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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09909734822113044 7.2801e-08  
a 2.549739260460071 1.8039e-08 au
q 2.297066861093172 1.9157e-07 au
i 14.72429480139077 7.0882e-06 deg
node 228.2782333390964 2.1489e-05 deg
peri 210.0431302242863 4.6156e-05 deg
M 319.2485821376176 4.6165e-05 deg
tp 2457568.838055645695
(2016-Jun-29.33805565)
0.00019176 JED
period 1487.106540368782
4.07
1.5782e-05
4.321e-08
d
yr
n .2420808396893506 2.569e-09 deg/d
Q 2.802411659826971 1.9827e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1018  
   data-arc span      22380 days (61.27 yr)  
   first obs. used      1954-08-31  
   last obs. used      2015-12-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .47343  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:34:15  

Additional Information
 Earth MOID = 1.31991 au 
 Jupiter MOID = 2.543 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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