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249395 (2009 BG118)
Classification: Main-belt Asteroid          SPK-ID: 2249395
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1219777663720655 7.2601e-08  
a 3.117306805874281 3.4697e-08 au
q 2.737064684597299 2.367e-07 au
i 2.572608039082278 6.3944e-06 deg
node 76.54438214514759 0.0001796 deg
peri 47.75299166985171 0.00018254 deg
M 21.09195542528857 3.0322e-05 deg
tp 2458882.717140844553
(2020-Feb-03.21714084)
0.00016919 TDB
period 2010.331827513851
5.50
3.3563e-05
9.189e-08
d
yr
n .1790749144359949 2.9897e-09 deg/d
Q 3.497548927151263 3.8929e-08 au
  Orbit Determination Parameters
   # obs. used (total)      228  
   data-arc span      5802 days (15.89 yr)  
   first obs. used      2004-03-15  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61646  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 10:22:50  

Additional Information
 Earth MOID = 1.75348 au 
 Jupiter MOID = 1.5674 au 
 T_jup = 3.204 
[ 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 16.3   n/a MPO418331  
diameter diameter 3.836 km 0.756 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.033   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249395 (2009 BG118)          Discovered 2009-Jan-30 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

[ show close-approach data ]
Alternate Designations
 2009 BG118 = 2004 EK29 = 2008 WK126 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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