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249157 (2008 BU9)
Classification: Main-belt Asteroid          SPK-ID: 2249157
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05671269273024208 1.1468e-07  
a 3.118163529293294 4.9207e-08 au
q 2.941324079173836 3.5693e-07 au
i 4.190658791361562 1.1694e-05 deg
node 15.331401673216 0.00013278 deg
peri 295.1695858567276 0.00016312 deg
M 204.7898048564875 0.00010004 deg
tp 2459467.590648662461
(2021-Sep-10.09064866)
0.00056525 TDB
period 2011.160627881817
5.51
4.7607e-05
1.303e-07
d
yr
n .179001117568196 4.2372e-09 deg/d
Q 3.295002979412752 5.1998e-08 au
  Orbit Determination Parameters
   # obs. used (total)      157  
   data-arc span      6699 days (18.34 yr)  
   first obs. used      2000-11-02  
   last obs. used      2019-03-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .67223  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 10:11:42  

Additional Information
 Earth MOID = 1.92951 au 
 Jupiter MOID = 1.87747 au 
 T_jup = 3.210 
[ 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 15.8   n/a MPO433632  
diameter diameter 4.091 km 2.157 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.046   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249157 (2008 BU9)          Discovered 2008-Jan-16 by Spacewatch at Kitt Peak
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

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