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305654 (2009 BY61)
Classification: Main-belt Asteroid          SPK-ID: 2305654
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2157676526369288 6.2453e-08  
a 2.388990019437103 2.2706e-08 au
q 1.873523250770108 1.3676e-07 au
i 1.481752701010315 5.0944e-06 deg
node 293.3830189283311 0.00021558 deg
peri 108.3384758833815 0.00021896 deg
M 95.41354387407249 2.4509e-05 deg
tp 2458643.039995901900
(2019-Jun-08.53999590)
9.1679e-05 TDB
period 1348.714199790717
3.69
1.9228e-05
5.264e-08
d
yr
n .2669208940306716 3.8053e-09 deg/d
Q 2.904456788104097 2.7605e-08 au
  Orbit Determination Parameters
   # obs. used (total)      205  
   data-arc span      7067 days (19.35 yr)  
   first obs. used      2000-09-27  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49201  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 17:56:41  

Additional Information
 Earth MOID = .882641 au 
 Jupiter MOID = 2.50949 au 
 T_jup = 3.501 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456561.5 (2013-Sep-26.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2150133864494432 6.2628e-08  
q 1.875453986693767 1.3714e-07 au
tp 2455942.582723180418
(2012-Jan-16.08272318)
9.9966e-05 TDB
node 293.7285323130361 0.00021553 deg
peri 107.5764197949185 0.00021899 deg
i 1.481285731686787 5.0995e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      205  
   data-arc span      7067 days (19.35 yr)  
   first obs. used      2000-09-27  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49201  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 17:56:41  

Additional Information
 Jupiter MOID = 2.50949 au 
 T_jup = 3.501 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.922301048306009E-15 -8.555754565952069E-15 -2.218929159994597E-12 2.204236747738892E-14 -6.438017915917838E-13 -5.482141232972386E-15
q -8.555754565952069E-15 1.88066641614058E-14 4.682362975990489E-12 -4.563251697979401E-14 1.367292363604447E-12 1.195555663397354E-14
tp -2.218929159994597E-12 4.682362975990489E-12 9.993159265786984E-9 -3.166140307642683E-10 3.889214021206667E-9 6.207877708205657E-12
node 2.204236747738892E-14 -4.563251697979401E-14 -3.166140307642683E-10 4.645335615075498E-8 -4.655404402447152E-8 2.401143802495292E-10
peri -6.438017915917838E-13 1.367292363604447E-12 3.889214021206667E-9 -4.655404402447152E-8 4.795833315934275E-8 -2.379930048287675E-10
i -5.482141232972386E-15 1.195555663397354E-14 6.207877708205657E-12 2.401143802495292E-10 -2.379930048287675E-10 2.600457267368295E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 18.0   n/a MPO360529  

305654 (2009 BY61)          Discovered 2009-Jan-18 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

Alternate Designations
 2009 BY61 = 2000 SF312 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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