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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09938360227702836 7.7844e-08  
a 2.549807058597212 2.3777e-08 AU
q 2.296398048002427 1.998e-07 AU
i 14.72457733855257 8.7544e-06 deg
node 228.29633213 2.4273e-05 deg
peri 209.9386361570419 5.1139e-05 deg
M 174.1309773028644 5.057e-05 deg
tp 2456081.162100953810
(2012-Jun-02.66210095)
0.00020275 JED
period 1487.165854506283
4.07
2.0802e-05
5.695e-08
d
yr
n .2420711845347704 3.386e-09 deg/d
Q 2.803216069191996 2.614e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      828  
   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      .45176  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 12:36:47  

Additional Information
 Earth MOID = 1.31906 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 12.9 mag n/a PDS3 (MPO 2868)  

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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