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JPL Small-Body Database Browser
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277477 (2005 WJ12)
Classification: Main-belt Asteroid          SPK-ID: 2277477
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09258199084044065 4.0992e-08  
a 2.347470465862994 1.547e-08 au
q 2.130136976694261 9.5556e-08 au
i 6.847600322888599 5.9294e-06 deg
node 66.52755593214749 4.9687e-05 deg
peri 209.2751599085399 6.6047e-05 deg
M 42.58992036534504 4.1742e-05 deg
tp 2458445.081411778450
(2018-Nov-22.58141178)
0.00015244 TDB
period 1313.707357980519
3.60
1.2986e-05
3.555e-08
d
yr
n .2740336329952553 2.7088e-09 deg/d
Q 2.564803955031727 1.6902e-08 au
  Orbit Determination Parameters
   # obs. used (total)      200  
   data-arc span      7176 days (19.65 yr)  
   first obs. used      2000-03-10  
   last obs. used      2019-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52842  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 20:10:53  

Additional Information
 Earth MOID = 1.11634 au 
 Jupiter MOID = 2.51001 au 
 T_jup = 3.545 
[ 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 16.9   n/a MPO288085  

277477 (2005 WJ12)          Discovered 2005-Nov-22 by Spacewatch at Kitt Peak
Reference: 20110517/Numbers.arcLast Updated: 2011-05-20

Alternate Designations
 2005 WJ12 = 2000 EG74 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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