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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09381090412578733 4.4695e-08  
a 3.163594229648199 1.9521e-08 au
q 2.866814594677778 1.4144e-07 au
i 10.18820624362576 4.894e-06 deg
node 332.0909081387412 2.1019e-05 deg
peri 45.14514557429019 3.0198e-05 deg
M 237.4093406070502 2.3236e-05 deg
tp 2460096.381427947271
(2023-May-31.88142795)
0.00013561 TDB
period 2055.27334063355
5.63
1.9023e-05
5.208e-08
d
yr
n .1751591833955419 1.6212e-09 deg/d
Q 3.46037386461862 2.1352e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1896  
   data-arc span      9817 days (26.88 yr)  
   first obs. used      1994-08-10  
   last obs. used      2021-06-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46381  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 04:11:53  

Additional Information
 Earth MOID = 1.87675 au 
 Jupiter MOID = 2.03718 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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