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386491 (2009 BR2)
Classification: Main-belt Asteroid          SPK-ID: 2386491
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2006801920161065 5.2433e-08  
a 3.006574509571761 3.3556e-08 au
q 2.403214559680169 1.6191e-07 au
i 9.599733802636429 6.4228e-06 deg
node 155.6582786543689 5.5298e-05 deg
peri 3.722833376364652 6.0655e-05 deg
M 43.56653495638975 2.6299e-05 deg
tp 2458770.060511455976
(2019-Oct-13.56051146)
0.0001373 TDB
period 1904.172915263744
5.21
3.1878e-05
8.728e-08
d
yr
n .1890584605600994 3.165e-09 deg/d
Q 3.609934459463354 4.029e-08 au
  Orbit Determination Parameters
   # obs. used (total)      118  
   data-arc span      5881 days (16.10 yr)  
   first obs. used      2004-03-11  
   last obs. used      2020-04-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66803  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-22 00:59:54  

Additional Information
 Earth MOID = 1.4124 au 
 Jupiter MOID = 1.37593 au 
 T_jup = 3.199 
[ 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 16.5   n/a MPO418978  
diameter diameter 3.050 km 0.988 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.052   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

386491 (2009 BR2)          Discovered 2009-Jan-19 by Lowe, A. at Mayhill
Reference: Last Updated: 2014-02-19

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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