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16556 (1991 VQ1)
Classification: Main-belt Asteroid          SPK-ID: 2016556
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2074220118137047 5.3022e-08  
a 2.280918828994695 1.2939e-08 AU
q 1.807806056700856 1.1984e-07 AU
i 7.340677482763325 6.3408e-06 deg
node 71.7365114572027 4.6705e-05 deg
peri 297.5817585766846 4.964e-05 deg
M 273.3469488876883 2.1929e-05 deg
tp 2457303.361821997705
(2015-Oct-07.86182200)
7.8354e-05 JED
period 1258.239087021398
3.44
1.0707e-05
2.931e-08
d
yr
n .2861141445321176 2.4347e-09 deg/d
Q 2.754031601288534 1.5623e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1049  
   data-arc span      23564 days (64.51 yr)  
   first obs. used      1950-12-09  
   last obs. used      2015-06-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51082  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 12:18:51  

Additional Information
 Earth MOID = .821906 AU 
 T_jup = 3.566 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.5 mag n/a MPO263495  

16556 (1991 VQ1)          Discovered 1991-Nov-04 by Ueda, S., Kaneda, H. at Kushiro
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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