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243419 (2009 BT169)
Classification: Main-belt Asteroid          SPK-ID: 2243419
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .21775567730922 5.9956e-08  
a 3.043816138479372 3.7278e-08 au
q 2.381007893640062 1.8533e-07 au
i 22.69730275184945 6.7733e-06 deg
node 118.9858276777062 1.61e-05 deg
peri 256.4226859481031 2.3802e-05 deg
M 140.2884542509818 1.7712e-05 deg
tp 2458244.632836299189
(2018-May-06.13283630)
9.5653e-05 TDB
period 1939.661965663063
5.31
3.5633e-05
9.756e-08
d
yr
n .1855993499758789 3.4096e-09 deg/d
Q 3.706624383318683 4.5395e-08 au
  Orbit Determination Parameters
   # obs. used (total)      291  
   data-arc span      6328 days (17.33 yr)  
   first obs. used      2002-10-30  
   last obs. used      2020-02-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61774  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 00:56:40  

Additional Information
 Earth MOID = 1.4906 au 
 Jupiter MOID = 2.10223 au 
 T_jup = 3.087 
[ 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 15.2   n/a MPO418301  
diameter diameter 5.202 km 1.232 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.054   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

243419 (2009 BT169)          Discovered 2009-Jan-17 by Spacewatch at Kitt Peak
Reference: 20100626/Numbers.arcLast Updated: 2010-06-28

[ show close-approach data ]
Alternate Designations
 2009 BT169 = 2008 UJ230 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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