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277485 (2005 WB57)
Classification: Main-belt Asteroid          SPK-ID: 2277485
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3540582785977164 6.1644e-08  
a 2.671066133466846 1.3445e-08 au
q 1.725353056230916 1.6911e-07 au
i 4.56498246417183 5.566e-06 deg
node 132.1376523235682 7.7965e-05 deg
peri 243.8292094831132 7.8367e-05 deg
M 132.1669713894813 6.1504e-06 deg
tp 2458415.109290349032
(2018-Oct-23.60929035)
2.6278e-05 TDB
period 1594.503174725246
4.37
1.2039e-05
3.296e-08
d
yr
n .2257756558321264 1.7046e-09 deg/d
Q 3.616779210702775 1.8205e-08 au
  Orbit Determination Parameters
   # obs. used (total)      514  
   data-arc span      8620 days (23.60 yr)  
   first obs. used      1996-08-15  
   last obs. used      2020-03-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40837  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 21:18:03  

Additional Information
 Earth MOID = .732531 au 
 Jupiter MOID = 1.85856 au 
 T_jup = 3.284 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.8   n/a MPO455059  

277485 (2005 WB57)          Discovered 2005-Nov-20 by LONEOS at Anderson Mesa
Reference: 20110517/Numbers.arcLast Updated: 2011-05-20

[ show close-approach data ]
Alternate Designations
 2005 WB57 = 2002 AF146 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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