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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2075090418397808 5.6229e-08  
a 2.280621424572344 1.2684e-08 AU
q 1.807371857960061 1.2766e-07 AU
i 7.341121567907449 6.8536e-06 deg
node 71.73572053389861 5.1019e-05 deg
peri 297.6145162565361 5.4066e-05 deg
M 216.0865689672021 2.2706e-05 deg
tp 2457303.394693693049
(2015-Oct-07.89469369)
8.2058e-05 JED
period 1257.993006144355
3.44
1.0495e-05
2.873e-08
d
yr
n .2861701124264358 2.3874e-09 deg/d
Q 2.753870991184627 1.5316e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      968  
   data-arc span      23132 days (63.33 yr)  
   first obs. used      1950-12-09  
   last obs. used      2014-04-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54993  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 14:09:15  

Additional Information
 Earth MOID = .820162 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 (399)
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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