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344589 (2003 BR81)
Classification: Main-belt Asteroid          SPK-ID: 2344589
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1392293416114413 5.7758e-08  
a 3.148131751289887 3.8487e-08 au
q 2.709819440251722 1.8732e-07 au
i 27.41316474646982 7.7323e-06 deg
node 144.9012658544716 1.3959e-05 deg
peri 288.5066796475612 3.2863e-05 deg
M 89.95893646230068 2.7304e-05 deg
tp 2458490.676807947741
(2019-Jan-07.17680795)
0.00015411 TDB
period 2040.223643770269
5.59
3.7414e-05
1.024e-07
d
yr
n .176451244009079 3.2358e-09 deg/d
Q 3.586444062328051 4.3846e-08 au
  Orbit Determination Parameters
   # obs. used (total)      294  
   data-arc span      7216 days (19.76 yr)  
   first obs. used      2000-07-24  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52393  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 22:26:43  

Additional Information
 Earth MOID = 1.84311 au 
 Jupiter MOID = 1.78902 au 
 T_jup = 3.020 
[ 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 MPO471580  
diameter diameter 4.920 km 1.238 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 8.245 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.067   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

344589 (2003 BR81)          Discovered 2003-Jan-31 by LINEAR at Socorro
Reference: 20121128/Numbers.arcLast Updated: 2012-12-03

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