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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1092512953572633 1.2901e-07  
a 2.383950652583188 1.4883e-08 au
q 2.123500955720682 3.1286e-07 au
i 11.77109896142168 1.0658e-05 deg
node 316.4167786006204 2.1427e-05 deg
peri 204.6984423019484 3.6374e-05 deg
M 5.61439894764611 3.2597e-05 deg
tp 2458979.532575514817
(2020-May-10.03257551)
0.00012168 TDB
period 1344.448957947784
3.68
1.259e-05
3.447e-08
d
yr
n .2677676961046681 2.5075e-09 deg/d
Q 2.644400349445694 1.6509e-08 au
  Orbit Determination Parameters
   # obs. used (total)      347  
   data-arc span      8118 days (22.23 yr)  
   first obs. used      1998-01-29  
   last obs. used      2020-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46111  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 20:00:46  

Additional Information
 Earth MOID = 1.13866 au 
 Jupiter MOID = 2.37551 au 
 T_jup = 3.500 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457630.5 (2016-Aug-30.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1097705407294448 1.2898e-07  
q 2.12251194565604 3.1286e-07 au
tp 2457636.265249585135
(2016-Sep-04.76524959)
0.00011914 TDB
node 316.4596844884218 2.1422e-05 deg
peri 205.0117562483588 3.6471e-05 deg
i 11.77323815850686 1.0659e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      347  
   data-arc span      8118 days (22.23 yr)  
   first obs. used      1998-01-29  
   last obs. used      2020-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46111  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 20:00:46  

Additional Information
 Jupiter MOID = 2.37551 au 
 T_jup = 3.500 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.663675634318332E-14 -4.0322712184465E-14 -1.12190657130996E-11 -1.651502629138257E-13 -2.427066596392673E-12 -5.291398915916183E-14
q -4.0322712184465E-14 9.788041198941149E-14 2.706323183943422E-11 4.001412744510281E-13 5.844529315967328E-12 1.283515003362558E-13
tp -1.12190657130996E-11 2.706323183943422E-11 1.419325298164904E-8 1.24079340287563E-10 3.498501020259326E-9 4.204072845434357E-11
node -1.651502629138257E-13 4.001412744510281E-13 1.24079340287563E-10 4.5888810312033E-10 -4.189116204857757E-10 -1.060944794355997E-11
peri -2.427066596392673E-12 5.844529315967328E-12 3.498501020259326E-9 -4.189116204857757E-10 1.330150536381461E-9 2.078164707896417E-11
i -5.291398915916183E-14 1.283515003362558E-13 4.204072845434357E-11 -1.060944794355997E-11 2.078164707896417E-11 1.136232683817634E-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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