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305651 (2009 BL55)
Classification: Main-belt Asteroid          SPK-ID: 2305651
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1094734193768038 1.3266e-07  
a 2.384187178586649 3.988e-08 au
q 2.123182055712434 3.2696e-07 au
i 11.76987169255955 1.417e-05 deg
node 316.4216686892705 3.1977e-05 deg
peri 204.7231955613628 6.0714e-05 deg
M 258.5086966614619 6.8585e-05 deg
tp 2458979.583845918400
(2020-May-10.08384592)
0.00026445 TDB
period 1344.649049144726
3.68
3.3737e-05
9.237e-08
d
yr
n .2677278507942134 6.7173e-09 deg/d
Q 2.645192301460864 4.4245e-08 au
  Orbit Determination Parameters
   # obs. used (total)      190  
   data-arc span      7567 days (20.72 yr)  
   first obs. used      1998-01-29  
   last obs. used      2018-10-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50623  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-31 04:37:28  

Additional Information
 Earth MOID = 1.13882 au 
 Jupiter MOID = 2.37627 au 
 T_jup = 3.500 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456638.5 (2013-Dec-12.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .109200788747681 1.328e-07  
q 2.12389202467631 3.2706e-07 au
tp 2456291.234844041596
(2012-Dec-29.73484404)
0.00020907 TDB
node 316.4641517882662 3.1952e-05 deg
peri 204.8952917825365 6.0897e-05 deg
i 11.77405017581077 1.4175e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      190  
   data-arc span      7567 days (20.72 yr)  
   first obs. used      1998-01-29  
   last obs. used      2018-10-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50623  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-31 04:37:28  

Additional Information
 Jupiter MOID = 2.37627 au 
 T_jup = 3.500 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.763540090227986E-14 -4.319276873996377E-14 -1.373549264877135E-11 -7.002956045736013E-14 -3.293284703244383E-12 1.376346917978432E-14
q -4.319276873996377E-14 1.069704727033892E-13 3.854910274662866E-11 1.823045879154156E-13 9.298631368272576E-12 -2.064497713172918E-14
tp -1.373549264877135E-11 3.854910274662866E-11 4.370989231665974E-8 1.000326597058957E-10 1.086796886980901E-8 4.655610526533177E-11
node -7.002956045736013E-14 1.823045879154156E-13 1.000326597058957E-10 1.020898764854108E-9 -9.732884470937063E-10 1.887309777295939E-10
peri -3.293284703244383E-12 9.298631368272576E-12 1.086796886980901E-8 -9.732884470937063E-10 3.708405640161861E-9 -1.727047185919795E-10
i 1.376346917978432E-14 -2.064497713172918E-14 4.655610526533177E-11 1.887309777295939E-10 -1.727047185919795E-10 2.009289816980544E-10

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.8   n/a MPO260601  

305651 (2009 BL55)          Discovered 2009-Jan-16 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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