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JPL Small-Body Database Browser
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442743 (2012 WF9)
Classification: Main-belt Asteroid          SPK-ID: 2442743
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .176228276211617 9.5408e-08  
a 2.256018060844513 2.1101e-08 au
q 1.85844388687961 2.2379e-07 au
i 6.608303932987117 6.88e-06 deg
node 79.88709121929273 0.00010141 deg
peri 307.7867419446318 0.00010804 deg
M 349.8216863860724 3.7412e-05 deg
tp 2458635.493357408579
(2019-May-31.99335741)
0.00012895 TDB
period 1237.691148546502
3.39
1.7365e-05
4.754e-08
d
yr
n .2908641630206135 4.0808e-09 deg/d
Q 2.653592234809417 2.482e-08 au
  Orbit Determination Parameters
   # obs. used (total)      74  
   data-arc span      7773 days (21.28 yr)  
   first obs. used      1995-12-16  
   last obs. used      2017-03-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61558  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-09 12:25:42  

Additional Information
 Earth MOID = .87171 au 
 Jupiter MOID = 2.79316 au 
 T_jup = 3.594 
[ 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 17.9   n/a MPO402749  

442743 (2012 WF9)          Discovered 1995-Dec-16 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02

Alternate Designations
 2012 WF9 = 1995 YU5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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