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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08908743055984397 5.0955e-08  
a 2.877205861163939 3.2437e-08 au
q 2.620882983801121 1.4488e-07 au
i 4.814762384258357 5.7655e-06 deg
node 146.0308608762996 6.6977e-05 deg
peri 185.5824007177429 7.4309e-05 deg
M 129.1999211064559 3.1855e-05 deg
tp 2458360.743688552631
(2018-Aug-30.24368855)
0.0001577 TDB
period 1782.603813908557
4.88
3.0145e-05
8.253e-08
d
yr
n .2019517725650211 3.4151e-09 deg/d
Q 3.133528738526757 3.5326e-08 au
  Orbit Determination Parameters
   # obs. used (total)      234  
   data-arc span      5523 days (15.12 yr)  
   first obs. used      2004-12-14  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60231  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 12:50:45  

Additional Information
 Earth MOID = 1.61015 au 
 Jupiter MOID = 2.17084 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 16.3   n/a MPO454984  
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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