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16686 (1994 PL9)
Classification: Main-belt Asteroid          SPK-ID: 2016686
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09363935831335482 4.6629e-08  
a 3.163910418505675 1.9908e-08 au
q 2.867643877155866 1.4663e-07 au
i 10.18815020715009 5.0632e-06 deg
node 332.0898528251516 2.1038e-05 deg
peri 45.16831899168153 3.0453e-05 deg
M 203.0427475635675 2.3235e-05 deg
tp 2460096.717833832917
(2023-Jun-01.21783383)
0.00013626 TDB
period 2055.581473118092
5.63
1.9401e-05
5.312e-08
d
yr
n .1751329269639308 1.6529e-09 deg/d
Q 3.460176959855484 2.1772e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1818  
   data-arc span      9687 days (26.52 yr)  
   first obs. used      1994-08-10  
   last obs. used      2021-02-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47126  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:38:47  

Additional Information
 Earth MOID = 1.87691 au 
 Jupiter MOID = 2.03716 au 
 T_jup = 3.173 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.72   n/a E2021B10  

16686 (1994 PL9)          Discovered 1994-Aug-10 by Elst, E. W. at La Silla
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1994 PL9 = 1997 AW22 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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