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312921 (2011 WF16)
Classification: Main-belt Asteroid          SPK-ID: 2312921
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .158392476753166 5.9453e-08  
a 2.181766600746773 1.4845e-08 au
q 1.836191185157156 1.33e-07 au
i 3.342066689114764 6.4313e-06 deg
node 161.6868505475686 9.5485e-05 deg
peri 96.28773824834616 9.877e-05 deg
M 38.75042511220663 3.0163e-05 deg
tp 2458873.797602995936
(2020-Jan-25.29760300)
9.7864e-05 TDB
period 1177.09322644553
3.22
1.2013e-05
3.289e-08
d
yr
n .3058381374660464 3.1214e-09 deg/d
Q 2.52734201633639 1.7196e-08 au
  Orbit Determination Parameters
   # obs. used (total)      234  
   data-arc span      8002 days (21.91 yr)  
   first obs. used      1997-05-31  
   last obs. used      2019-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62371  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 18:48:54  

Additional Information
 Earth MOID = .824821 au 
 Jupiter MOID = 2.52591 au 
 T_jup = 3.661 
[ 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 17.5   n/a MPO427651  

312921 (2011 WF16)          Discovered 2000-Mar-26 by LONEOS at Anderson Mesa
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11

Alternate Designations
 2011 WF16 = 2006 AQ18 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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