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227158 (2005 QW11)
Classification: Main-belt Asteroid          SPK-ID: 2227158
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2498031635234383 4.18e-08  
a 2.385233994718946 1.0216e-08 au
q 1.789394997094505 9.5831e-08 au
i 6.227344444821342 3.9975e-06 deg
node 117.578472435913 4.2656e-05 deg
peri 216.6534763476303 4.4326e-05 deg
M 51.27812763430587 9.7105e-06 deg
tp 2459008.843050855891
(2020-Jun-08.34305086)
3.5873e-05 TDB
period 1345.534731375788
3.68
8.6441e-06
2.367e-08
d
yr
n .2675516221211962 1.7188e-09 deg/d
Q 2.981072992343387 1.2768e-08 au
  Orbit Determination Parameters
   # obs. used (total)      486  
   data-arc span      7150 days (19.58 yr)  
   first obs. used      2001-06-15  
   last obs. used      2021-01-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50904  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 13:10:59  

Additional Information
 Earth MOID = .781645 au 
 Jupiter MOID = 2.40227 au 
 T_jup = 3.485 
[ 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 16.98   n/a E2021B55  
diameter diameter 2.774 km 0.239 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.048   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

227158 (2005 QW11)          Discovered 2005-Aug-22 by Siding Spring Survey at Siding Spring
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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