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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09244213326289592 4.0737e-08  
a 2.347945070495508 1.5349e-08 au
q 2.130896019394803 9.4823e-08 au
i 6.847167823869986 5.8921e-06 deg
node 66.52933162743238 4.877e-05 deg
peri 209.4140737007484 6.4674e-05 deg
M 152.0552651170034 4.0862e-05 deg
tp 2458445.453603283958
(2018-Nov-22.95360328)
0.00014942 TDB
period 1314.105780316258
3.60
1.2886e-05
3.528e-08
d
yr
n .273950549029136 2.6863e-09 deg/d
Q 2.564994121596213 1.6768e-08 au
  Orbit Determination Parameters
   # obs. used (total)      207  
   data-arc span      7228 days (19.79 yr)  
   first obs. used      2000-03-10  
   last obs. used      2019-12-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54167  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 14:12:10  

Additional Information
 Earth MOID = 1.1176 au 
 Jupiter MOID = 2.5102 au 
 T_jup = 3.544 
[ 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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