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266912 (2009 WZ248)
Classification: Main-belt Asteroid          SPK-ID: 2266912
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08917077366898575 5.0426e-08  
a 2.87718311969906 2.8948e-08 au
q 2.620622474928148 1.4471e-07 au
i 4.815176254705856 5.727e-06 deg
node 146.0286215253459 6.035e-05 deg
peri 185.6573370626076 6.6923e-05 deg
M 169.500713088245 3.0301e-05 deg
tp 2458361.197124188103
(2018-Aug-30.69712419)
0.00014757 TDB
period 1782.582679371851
4.88
2.6903e-05
7.366e-08
d
yr
n .2019541669320255 3.0479e-09 deg/d
Q 3.133743764469971 3.153e-08 au
  Orbit Determination Parameters
   # obs. used (total)      256  
   data-arc span      5951 days (16.29 yr)  
   first obs. used      2004-12-14  
   last obs. used      2021-03-31  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .60407  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 11:22:41  

Additional Information
 Earth MOID = 1.60798 au 
 Jupiter MOID = 2.17044 au 
 T_jup = 3.285 
[ 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 16.48   n/a MPCxxxxx  
diameter diameter 3.974 km 0.331 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.034   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

266912 (2009 WZ248)          Discovered 2009-Nov-18 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20110218/Numbers.arcLast Updated: 2011-02-22

Alternate Designations
 2009 WZ248 = 2007 EZ168 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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