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16506 (1990 UH1)
Classification: Main-belt Asteroid          SPK-ID: 2016506
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2437106305396518 8.0332e-08  
a 2.363588368678526 1.5214e-08 AU
q 1.787556757011696 1.8816e-07 AU
i 9.547855565376713 7.6417e-06 deg
node 91.1789506655127 4.0921e-05 deg
peri 306.6717526292737 4.3908e-05 deg
M 230.9899476161668 1.9598e-05 deg
tp 2457476.138766186496
(2016-Mar-28.63876619)
7.485e-05 JED
period 1327.260571274646
3.63
1.2815e-05
3.509e-08
d
yr
n .2712353608562868 2.6188e-09 deg/d
Q 2.939619980345356 1.8922e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      754  
   data-arc span      21952 days (60.10 yr)  
   first obs. used      1955-03-22  
   last obs. used      2015-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50829  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 16:26:34  

Additional Information
 Earth MOID = .814354 AU 
 T_jup = 3.491 
[ 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 14.0 mag n/a MPO302166  

16506 (1990 UH1)          Discovered 1990-Oct-20 by McNaught, R. H. at Siding Spring
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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