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277490 (2005 WQ81)
Classification: Main-belt Asteroid          SPK-ID: 2277490
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .106575345427786 5.8117e-08  
a 2.390368128630151 1.8539e-08 au
q 2.135613819621822 1.4393e-07 au
i 7.740213243843069 6.9716e-06 deg
node 56.85909756222037 4.0511e-05 deg
peri 310.8593577744911 5.0545e-05 deg
M 26.96468191874585 3.0151e-05 deg
tp 2458899.391326622745
(2020-Feb-19.89132662)
0.00011291 TDB
period 1349.881393946918
3.70
1.5704e-05
4.3e-08
d
yr
n .2666900970813413 3.1026e-09 deg/d
Q 2.64512243763848 2.0515e-08 au
  Orbit Determination Parameters
   # obs. used (total)      227  
   data-arc span      6970 days (19.08 yr)  
   first obs. used      2000-06-05  
   last obs. used      2019-07-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58533  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 04:47:00  

Additional Information
 Earth MOID = 1.14477 au 
 Jupiter MOID = 2.80843 au 
 T_jup = 3.512 
[ 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 16.7   n/a MPO433795  

277490 (2005 WQ81)          Discovered 2005-Nov-28 by LINEAR at Socorro
Reference: 20110517/Numbers.arcLast Updated: 2011-05-20

[ show close-approach data ]
Alternate Designations
 2005 WQ81 = 2001 UM184 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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